Grizzly G0757Z User Manual

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MODEL G0757Z

VARIABLE-SPEED HORIZONTAL/

VERTICAL MILL w/DRO

OWNER'S MANUAL

(For models manufactured since 02/15)

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#BB17431 PRINTED IN CHINA

V1.07.15

This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this machine/tool. Save this document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual may result in fire or serious personal injury—including amputation, electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use. This responsibility includes but is not limited to proper installation in a safe environment, personnel training and usage authorization, proper inspection and maintenance, manual availability and comprehension, application of safety devices, cutting/sanding/grinding tool integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints.

• Crystalline silica from bricks, cement and other masonry products.

• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: Work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

Table of Contents

INTRODUCTION ............................................... 2

Contact Info.................................................... 2

Manual Accuracy ........................................... 2

Left Front View Identification ......................... 3

Right Front View Identification ....................... 4

Controls & Components ................................. 5

Machine Data Sheet ...................................... 7

SECTION 1: SAFETY ..................................... 10

Safety Instructions for Machinery ................ 10

Additional Safety for Milling Machines ......... 12

SECTION 2: POWER SUPPLY ...................... 13

SECTION 3: SETUP ....................................... 15

Needed for Setup ......................................... 15

Unpacking .................................................... 15

Inventory ...................................................... 16

Cleanup ........................................................ 17

Site Considerations ...................................... 18

Lifting & Placing ........................................... 19

Leveling ........................................................ 20

Anchoring to Floor ....................................... 20

Arbor/Chuck Assembly ................................ 21

Verifying Lubrication .................................... 21

Assembly ..................................................... 22

Power Connection........................................ 23

Test Run ...................................................... 23

Spindle Break-In .......................................... 25

Inspections & Adjustments .......................... 26

SECTION 4: OPERATIONS ........................... 27

Operation Overview ..................................... 27

Table Movement .......................................... 28

Head Tilt....................................................... 29

Ram Movement............................................ 30

Installing/Removing Tooling ......................... 31

Spindle Speed.............................................. 35

Using Spindle Downfeed Controls ............... 37

SECTION 5: ACCESSORIES ......................... 39

SECTION 6: MAINTENANCE ......................... 44

Schedule ...................................................... 44

Cleaning & Protecting .................................. 44

Lubrication ................................................... 45

Adding/Changing Coolant ............................ 51

V-Belt Service .............................................. 52

Machine Storage .......................................... 54

SECTION 7: SERVICE ................................... 55

Troubleshooting ........................................... 55

Tramming Mill Head ..................................... 58

Adjusting Leadscrew Backlash .................... 60

Adjusting Gibs .............................................. 61

SECTION 8: WIRING ...................................... 62

Wiring Safety Instructions ............................ 62

Wiring Overview ........................................... 63

Component Location .................................... 63

Electrical Panel Wiring Diagram .................. 64

Electrical Cabinet Wiring .............................. 65

Control Panel Wiring .................................... 66

Vertical Spindle Motor Wiring ...................... 67

Horizontal Spindle Motor Wiring .................. 67

Coolant Pump Wiring ................................... 68

DRO Wiring .................................................. 68

SECTION 9: PARTS ....................................... 69

Column ......................................................... 69

Table ............................................................ 71

Horizontal Spindle ........................................ 73

Vertical Spindle ............................................ 75

Vertical Gearbox .......................................... 77

Electrical Components ................................. 79

Electrical Components Cont. ....................... 80

Accessories .................................................. 81

Labels & Cosmetics ..................................... 82

WARRANTY & RETURNS ............................. 85

We stand behind our machines! If you have questions or need help, contact us with the information below. Before contacting, make sure you get the

serial number

machine ID label. This will help us help you faster.

We want your feedback on this manual. What did you like about it? Where could it be improved? Please take a few minutes to give us feedback.

Email: manuals@grizzly.com

We are proud to provide a high-quality owner’s manual with your new machine!

instructions, specifications, drawings, and photographs in this manual. Sometimes we make mistakes, but our policy of continuous improvement also means that

you receive is

slightly different than shown in the manual

If you find this to be the case, and the difference between the manual and machine leaves you confused or unsure about something

check our

website for an updated version. W

current

manuals and

on our web-

site at

Alternatively, you can call our Technical Support for help. Before calling, make sure you write down the

from the machine ID label (see below). This information is required for us to provide proper tech support, and it helps us determine if updated documentation is available for your machine.

INTRODUCTION

Contact Info

and manufacture date from the

Grizzly Technical Support

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: (570) 546-9663

Email: techsupport@grizzly.com

Grizzly Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Manual Accuracy

made every effort to be exact with the

sometimes the machine

e post

manual updates for free

www.grizzly.com.

Manufacture Date and Serial Number

Manufacture Date

Serial Number

-2-

Model G0757Z (Mfd. Since 02/15)

Horizontal Arbor

Support

Left Front View Identification

Spindle

Motor

Master

Halogen

Work Light

Control Panel

DRO

X-Axis

Handwheel

Electrical

Cabinet

Vertical Spindle

Coolant

Nozzle

Splash

Pan

Base

Coolant

Pump

Model G0757Z (Mfd. Since 02/15)

-3-

Right Front View Identification

High/Low

Gear Selector

Coarse

Downfeed

Lever

Fine

Downfeed

Handwheel

Z-Axis

Crank

Handwheel

Ram

Controls

Horizontal

Spindle

X-Axis

Handwheel

X-Axis

Power Feed

Y-Axis

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Model G0757Z (Mfd. Since 02/15)

Controls &

To reduce your risk of serious injury, read this entire manual BEFORE

Control Panel

Components

using machine.

Refer to Figures 1–4 and the following descriptions to become familiar with the basic controls and components of this machine. Understanding these items and how they work will help you understand the rest of the manual and stay safe when operating this machine.

Master Power Switch

A. Vertical Spindle RPM Readout: Displays

current spindle RPM.

B. FORWARD Button (Vertical Spindle

Starts vertical spindle forward rotation (clockwise looking down on headstock).

Figure 2. Control panel.

Master

Power Switch

Figure 1. Location of master power switch.

Master Power Switch: Enables power to flow to

machine.

Spindle rotation direction can ONLY be changed when spindle is completely stopped.

C. REVERSE Button (Vertical Spindle

Starts vertical spindle reverse rotation (counterclockwise looking down on headstock).

D. STOP Button (Vertical Spindle

vertical spindle rotation.

E. FORWARD Button (Horizontal Spindle

Starts horizontal spindle forward rotation (counterclockwise as viewed from front of machine).

F. REVERSE Button (Horizontal Spindle

Starts horizontal spindle reverse rotation (clockwise as viewed from front of machine).

G. STOP Button (Horizontal Spindle

horizontal spindle rotation.

): Stops

Model G0757Z (Mfd. Since 02/15)

H. Variable-Speed Dial: Controls speed of ver-

tical spindle.

-5-

I. POWER Lamp Button: When pressed, illu-

minates and enables power to control panel. E-STOP button must be reset first.

J. E-STOP Button: Disables power to control

panel and stops all machine functions. To reset, twist button clockwise until it pops out.

K. Coolant Pump Switch: Starts/stops coolant

pump and flow of coolant.

X-Axis Power Feed

E. Directional Lever: Selects direction of table

movement. Center position is neutral.

F. Speed Dial: Controls speed of table move-

ment. Turning dial clockwise causes table to move faster.

Note: Feed rates for table travel are extreme-

ly difficult to precisely calculate. We recommend that you combine research and experimentation to find feed rates that best work for your operations.

Figure 3. Power feed components.

A. Limit Switch: Stops powered table move-

ment when either side plunger comes in contact with limit stops.

B. Limit Stop: Limits X-axis table travel (one on

either end of table).

C. Graduated Dial: Displays X-axis table move-

ment in 0.001" increments, with each revolution equaling 0.200" of travel.

D. Handwheel: Manually positions table.

G. Reset Button: Resets internal circuit breaker

if unit is overloaded and shuts down.

H. ON/OFF Switch: Enables/disables power to

unit.

I. Rapid Traverse Button: Once directional

lever has been activated, causes table to travel at full speed while pushed.

Headstock

High/Low

Gear Selector

Figure 4. Headstock controls.

High/Low Gear Selector: Selects between high

and low gears on the vertical spindle.

-6-

Model G0757Z (Mfd. Since 02/15)

Machine Data Sheet

MACHINE DATA

SHEET

Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901

MODEL G0757Z VARIABLE‐SPEED HORIZONTAL/VERTICAL

MILL WITH DRO

Product Dimensions:

Weight............................................................................................................................................................ 1874 lbs.

Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 53-1/2 x 55 x 82 in.

Footprint (Length x Width)..................................................................................................................... 35-1/2 x 20 in.

Space Required for Full Range of Movement (Width x Depth).................................................................... 76 x 58 in.

Shipping Dimensions:

Type.......................................................................................................................................................... Wood Crate

Content........................................................................................................................................................... Machine

Weight............................................................................................................................................................ 2050 lbs.

Length x Width x Height....................................................................................................................... 53 x 45 x 88 in.

Must Ship Upright................................................................................................................................................... Yes

Electrical:

Power Requirement........................................................................................................... 220V, Single-Phase, 60 Hz

Full-Load Current Rating....................................................................................................................................... 9.5A

Minimum Circuit Size.............................................................................................................................................. 15A

Power Cord Included.............................................................................................................................................. Yes

Power Cord Length.......................................................................................................................................... 6-1/2 ft.

Power Cord Gauge......................................................................................................................................... 14 AWG

Plug Included........................................................................................................................................................... No

Recommended Plug Type.......................................................................................................................... NEMA 6-15

Switch Type.............................................................................................................. Control Panel with E-Stop Button

Inverter Type............................................................................................................................................ Delta VFD-E

Motors:

Coolant Pump

Vertical Spindle

Type............................................................................................................... TEFC Permanent-Split Capacitor

Horsepower................................................................................................................................................. 40W

Phase............................................................................................................................................ Single-Phase

Amps........................................................................................................................................................... 0.2A

Speed................................................................................................................................................ 2800 RPM

Power Transfer ............................................................................................................................... Direct Drive

Bearings..................................................................................................... Shielded & Permanently Lubricated

Type................................................................................................................. TEFC Capacitor-Start Induction

Horsepower................................................................................................................................................ 3 HP

Phase.................................................................................................................................................... 3-Phase

Amps........................................................................................................................................................... 9.3A

Speed................................................................................................................................................ 1500 RPM

Power Transfer ................................................................................................................................. Gear Drive

Bearings..................................................................................................... Shielded & Permanently Lubricated

Model G0757Z (Mfd. Since 02/15)

-7-

Horizontal Spindle

Type.................................................................................................................

Horsepower................................................................................................................................................

Phase............................................................................................................................................ Single-Phase

Amps........................................................................................................................................................... 8.6A

Speed................................................................................................................................................ 1725 RPM

Power Transfer ............................................................................................................................... V-Belt Drive

Bearings..................................................................................................... Shielded & Permanently Lubricated

Main Specifications:

Operation Info

Spindle Travel.............................................................................................................................................. 5 in.

Max Distance Spindle to Column........................................................................................................ 26-3/4 in.

Max Distance Spindle to Table............................................................................................................ 14-1/2 in.

Maximum Distance Horizontal Spindle Center to Table...................................................................... 14-1/8 in.

Longitudinal Table Travel (X-Axis)...................................................................................................... 23-1/2 in.

Cross Table Travel (Y-Axis).................................................................................................................. 8-1/2 in.

Vertical Table Travel (Z-Axis).............................................................................................................. 12-1/2 in.

Table Swivel (Left/Right)........................................................................................................................ 45 deg.

Ram Travel................................................................................................................................................ 11 in.

Turret or Column Swivel (Left /Right)................................................................................................... 180 deg.

Head Tilt (Left/Right).............................................................................................................................. 90 deg.

Drilling Capacity for Cast Iron................................................................................................................ 1-1/8 in.

Drilling Capacity for Steel............................................................................................................................ 1 in.

End Milling Capacity.................................................................................................................................... 1 in.

Face Milling Capacity................................................................................................................................... 4 in.

TEFC Capacitor-Start Induction

2 HP

Table Info

Table Length........................................................................................................................................ 39-3/8 in.

Table Width........................................................................................................................................... 9-1/2 in.

Table Thickness.................................................................................................................................... 2-3/8 in.

Number of T-Slots............................................................................................................................................ 3

T-Slot Size................................................................................................................................................ 5/8 in.

T-Slots Centers............................................................................................................................................

Number of Longitudinal Feeds.............................................................................................................. Variable

X-Axis Table Power Feed Rate................................................................................................... 0 – 11.67 FPM

X/Y-Axis Travel per Handwheel Revolution.......................................................................................... 0.200 in.

Z-Axis Travel per Handwheel Revolution............................................................................................. 0.200 in.

Spindle Info

Spindle Taper...............................................................................................................................................

Range of Vertical Spindle Speeds......................................................................... 100 – 600, 350 – 2000 RPM

Quill Diameter........................................................................................................................................

Drawbar Thread Size............................................................................................................................. 7/16-20

Drawbar Length............................................................................................................................. 20, 13-3/4 in.

Spindle Bearings..................................................................................................

Horizontal Spindle Taper.............................................................................................................................. R-8

Number of Horizontal Spindle Speeds............................................................................................................. 8

Range of Horizontal Spindle Speeds.........................................................................................

Horizontal Spindle Bearing Type......................................................................... Tapered Roller Bearings (P5)

Construction

Spindle Housing/Quill........................................................................................................... Chromed Cast Iron

Table....................................................................................................................... Precision-Ground Cast Iron

Head.................................................................................................................................................... Cast Iron

Column/Base....................................................................................................................................... Cast Iron

Base..................................................................................................................................................... Cast Iron

Paint Type/Finish.................................................................................................................................... Enamel

Tapered Roller Bearings (P5)

72 – 1300 RPM

3 in.

R-8

3-1/2 in.

-8-

Model G0757Z (Mfd. Since 02/15)

Other Specifications:

Country of Origin ................................................................................................................................................

Warranty ...........................................................................................................................................................

Serial Number Location .....................................................................................................

ISO 9001 Factory ..................................................................................................................................................

Features:

Variable-speed spindle control with digital readout for spindle RPMs Recycling coolant system Longitudinal power feed High-precision P5 spindle bearings Halogen work light Independent high-CFM motor fan 3-Axis DRO

Accessories Included:

Arbor adapter, R-8 to MT#3 Horizontal arbors w/spacers, 1-1/4" & 1" 1 – 13mm drill chuck w/key & arbor MT#3 to MT#2 adapter sleeve T-bolts w/washers & nuts Service tools & toolbox

Machine ID Label on Head

China

1 Year

Yes

Model G0757Z (Mfd. Since 02/15)

-9-

SECTION 1: SAFETY

For Your Own Safety, Read Instruction

Manual Before Operating This Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures. Always use common sense and good judgment.

Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury. It may also be used to alert against unsafe practices.

This symbol is used to alert the user to useful information about

NOTICE

proper operation of the machine.

Safety Instructions for Machinery

OWNER’S MANUAL. Read and understand this

owner’s manual BEFORE using machine.

TRAINED OPERATORS ONLY. Untrained operators have a higher risk of being hurt or killed. Only allow trained/supervised people to use this machine. When machine is not being used, disconnect power, remove switch keys, or lock-out machine to prevent unauthorized use—especially around children. Make workshop kid proof!

DANGEROUS ENVIRONMENTS. Do not use machinery in areas that are wet, cluttered, or have poor lighting. Operating machinery in these areas greatly increases the risk of accidents and injury.

MENTAL ALERTNESS REQUIRED. Full mental alertness is required for safe operation of machinery. Never operate under the influence of drugs or alcohol, when tired, or when distracted.

ELECTRICAL EQUIPMENT INJURY RISKS. You can be shocked, burned, or killed by touching live electrical components or improperly grounded machinery. To reduce this risk, only allow qualified service personnel to do electrical installation or repair work, and always disconnect power before accessing or exposing electrical equipment.

DISCONNECT POWER FIRST. nect machine from power supply BEFORE making adjustments, changing tooling, or servicing machine. This prevents an injury risk from unintended startup or contact with live electrical components.

EYE PROTECTION. Always wear ANSI-approved safety glasses or a face shield when operating or observing machinery to reduce the risk of eye injury or blindness from flying particles. Everyday eyeglasses are NOT approved safety glasses.

Always discon-

-10 -

Model G0757Z (Mfd. Since 02/15)

WEARING PROPER APPAREL. Do not wear clothing, apparel or jewelry that can become entangled in moving parts. Always tie back or cover long hair. Wear non-slip footwear to reduce risk of slipping and losing control or accidentally contacting cutting tool or moving parts.

HAZARDOUS DUST. Dust created by machinery operations may cause cancer, birth defects, or long-term respiratory damage. Be aware of dust hazards associated with each workpiece material. Always wear a NIOSH-approved respirator to reduce your risk.

HEARING PROTECTION. Always wear hearing protection when operating or observing loud machinery. Extended exposure to this noise without hearing protection can cause permanent hearing loss.

REMOVE ADJUSTING TOOLS. Tools left on machinery can become dangerous projectiles upon startup. Never leave chuck keys, wrenches, or any other tools on machine. Always verify removal before starting!

USE CORRECT TOOL FOR THE JOB. Only use this tool for its intended purpose—do not force it or an attachment to do a job for which it was not designed. Never make unapproved modifications—modifying tool or using it differently than intended may result in malfunction or mechanical failure that can lead to personal injury or death!

AWKWARD POSITIONS. Keep proper footing and balance at all times when operating machine. Do not overreach! Avoid awkward hand positions that make workpiece control difficult or increase the risk of accidental injury.

CHILDREN & BYSTANDERS. Keep children and bystanders at a safe distance from the work area. Stop using machine if they become a distraction.

GUARDS & COVERS. Guards and covers reduce accidental contact with moving parts or flying debris. Make sure they are properly installed, undamaged, and working correctly BEFORE operating machine.

FORCING MACHINERY. Do not force machine. It will do the job safer and better at the rate for which it was designed.

NEVER STAND ON MACHINE. Serious injury may occur if machine is tipped or if the cutting tool is unintentionally contacted.

STABLE MACHINE. Unexpected movement during operation greatly increases risk of injury or loss of control. Before starting, verify machine is stable and mobile base (if used) is locked.

USE RECOMMENDED ACCESSORIES. Consult this owner’s manual or the manufacturer for recommended accessories. Using improper accessories will increase the risk of serious injury.

UNATTENDED OPERATION. To reduce the risk of accidental injury, turn machine OFF and ensure all moving parts completely stop before walking away. Never leave machine running while unattended.

MAINTAIN WITH CARE. Follow all maintenance instructions and lubrication schedules to keep machine in good working condition. A machine that is improperly maintained could malfunction, leading to serious personal injury or death.

DAMAGED PARTS. Regularly inspect machine for damaged, loose, or mis-adjusted parts—or any condition that could affect safe operation. Immediately repair/replace BEFORE operating machine. For your own safety, DO NOT operate machine with damaged parts!

MAINTAIN POWER CORDS. When disconnecting cord-connected machines from power, grab and pull the plug—NOT the cord. Pulling the cord may damage the wires inside. Do not handle cord/plug with wet hands. Avoid cord damage by keeping it away from heated surfaces, high traffic areas, harsh chemicals, and wet/damp locations.

EXPERIENCING DIFFICULTIES. If at any time you experience difficulties performing the intended operation, stop using the machine! Contact our Technical Support at (570) 546-9663.

Model G0757Z (Mfd. Since 02/15)

-11-

Additional Safety for Milling Machines

The primary risks of operating a mill are as follows: You can be seriously injured or killed by getting clothing, jewelry, or long hair entangled with rotating cutter. You can be severely cut or have fingers amputated from contact with the rotating cutter. You can be blinded or struck by broken cutting tools, metal chips, workpieces, or adjustment tools thrown from the rotating spindle with great force. To reduce your risk of serious injury when operating this machine, completely heed and understand the following:

UNDERSTAND ALL CONTROLS. Make sure

you understand the function and proper use of all controls before starting. This will help you avoid making mistakes that result in serious injury.

WEAR FACE SHIELD. Always wear a face shield in addition to safety glasses. This provides more complete protection for your face than safety glasses alone.

REMOVE CHUCK KEY & SPINDLE TOOLS. Always remove chuck key, drawbar wrench, and other tools used on the spindle immediately after use. This will prevent them from being thrown by the spindle upon startup.

PROPERLY SECURE CUTTER. Firmly secure cutting tool or drill bit so it does not fly out of spindle during operation.

USE CORRECT SPINDLE SPEED. Follow recommended speeds and feeds for each size and type of cutting tool. This helps avoid tool breakage during operation and ensures best cutting results.

INSPECT CUTTING TOOL. Inspect cutting tools for sharpness, chips, or cracks before each use. Replace dull, chipped, or cracked cutting tools immediately.

ALLOW SPINDLE TO STOP. To minimize your risk of entanglement, always allow spindle to stop on its own. DO NOT stop spindle using your hand or any other object.

SECURE WORKPIECE TO TABLE. Clamp workpiece to table or secure in a vise mounted to table, so workpiece cannot unexpectedly shift or spin during operation. NEVER hold workpiece by hand during operation.

CLEAN MACHINE SAFELY. Metal chips or shavings can be razor sharp. DO NOT clear chips by hand or compressed air that can force chips farther into machine—use a brush or vacuum instead. Never clear chips while spindle is turning.

PROPERLY MAINTAIN MACHINE. Keep machine in proper working condition to help ensure that it functions safely and all guards and other components work as intended. Perform routine inspections and all necessary maintenance. Never operate machine with damaged or worn parts that can break or result in unexpected movement during operation.

DISCONNECT POWER FIRST. To reduce risk of electrocution or injury from unexpected startup, make sure mill/drill is turned OFF, disconnected from power, and all moving parts have come to a complete stop before changing cutting tools or starting any inspection, adjustment, or maintenance procedure.

POWER DISRUPTION. In the event of a local power outage during operation, turn spindle switch OFF to avoid a possible sudden startup once power is restored.

-12-

Model G0757Z (Mfd. Since 02/15)

Before installing the machine, consider the availability and proximity of the required power supply circuit. If an existing circuit does not meet the requirements for this machine, a new circuit must be installed. To minimize the risk of electrocution, fire, or equipment damage, installation work and electrical wiring must be done by an electrican or qualified service personnel in accordance with all applicable codes and standards.

Electrocution, fire, or equipment damage may occur if machine is not correctly grounded and connected to the power

The full-load current rating is the amperage a machine draws at 100% of the rated output power. On machines with multiple motors, this is the amperage drawn by the largest motor or sum of all motors and electrical devices that might operate at one time during normal operations.

The full-load current is not the maximum amount of amps that the machine will draw. If the machine is overloaded, it will draw additional amps beyond the full-load rating.

If the machine is overloaded for a sufficient length of time, damage, overheating, or fire may result— especially if connected to an undersized circuit. To reduce the risk of these hazards, avoid overloading the machine during operation and make sure it is connected to a power supply circuit that meets the requirements in the following section.

This machine is prewired to operate on a 220V power supply circuit that has a verified ground and meets the following requirements:

For your own safety and protection of

Note: The circuit requirements listed in this manual apply to a dedicated circuit—where only one machine will be running at a time. If this machine will be connected to a shared circuit where multiple machines will be running at the same time, consult a qualified electrician to ensure that the circuit is properly sized for safe operation.

A power supply circuit includes all electrical equipment between the breaker box or fuse panel in the building and the machine. The power supply circuit used for this machine must be sized to safely handle the full-load current drawn from the machine for an extended period of time. (If this machine is connected to a circuit protected by fuses, use a time delay fuse marked D.)

SECTION 2: POWER SUPPLY

Availability

supply.

Full-Load Current Rating

Circuit Requirements for 220V

Nominal Voltage .............................. 220V/240V

Cycle ..........................................................60 Hz

Phase .................................................... 1-Phase

Power Supply Circuit ......................... 15 Amps

Plug/Receptacle ............................. NEMA 6-15

Full-Load Current Rating at 220V .... 9.5 Amps

Model G0757Z (Mfg. Since 02/15)

property, consult an electrician if you are unsure about wiring practices or electrical codes in your area.

-13-

We do not recommend using an extension cord with this machine. cord, only use it if absolutely necessary and only on a temporary basis.

Extension cords cause voltage drop, which may damage electrical components and shorten motor life. Voltage drop increases as the extension cord size gets longer and the gauge size gets smaller (higher gauge numbers indicate smaller sizes).

Any extension cord used with this machine must contain a ground wire, match the required plug and receptacle, and meet the following requirements:

Grounding Instructions

This machine MUST be grounded. In the event of certain malfunctions or breakdowns, grounding reduces the risk of electric shock by providing a path of least resistance for electric current.

Improper connection of the equipment-grounding wire can result in a risk of electric shock. The wire with green insulation (with or without yellow stripes) is the equipment-grounding wire. If repair or replacement of the power cord or plug is necessary, do not connect the equipment-grounding wire to a live (current carrying) terminal.

Check with a qualified electrician or service personnel if you do not understand these grounding requirements, or if you are in doubt about whether the tool is properly grounded. If you ever notice that a cord or plug is damaged or worn, disconnect it from power, and immediately replace it with a new one.

The power cord and plug specified under “Circuit Requirements for 220V” has an equipment-grounding wire and a grounding prong. The plug must only be inserted into a matching receptacle (outlet) that is properly installed and grounded in accordance with all local codes and ordinances (see figure below).

No adapter should be used with the required plug. If the plug does not fit the available receptacle, or the machine must

on the previous page

GROUNDED

6-15 RECEPTACLE

Current Carrying Prongs

6-15 PLUG

Serious injury could occur if you connect the machine to power before completing the setup process. DO NOT connect to power until instructed later in this manual.

Grounding Prong

Figure 5. Typical 6-15 plug and receptacle.

be reconnected for use on a different type of circuit, the reconnection must be made by a qualified electrician and comply with all local codes and ordinances.

-14-

Extension Cords

If you must use an extension

Minimum Gauge Size ...........................14 AWG

Maximum Length (Shorter is Better).......50 ft.

Model G0757Z (Mfg. Since 02/15)

SECTION 3: SETUP

Your machine was carefully packaged for safe transportation. Remove the packaging materials from around your machine and inspect it. If you discover any damage, please call us immediately

at (570) 546-9663

Save the containers and all packing materials for possible inspection by the carrier or its agent.

Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condition of your shipment, inventory the contents.

Keep children and pets away from plastic bags or packing materials shipped with this

get help from other people

The following items are needed, but not included, for the setup/assembly of this machine.

Needed for Setup

This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine!

Wear safety glasses during the entire setup process!

Description Qty

• Precision Level ........................................... 1

• Safety Glasses (for each person) ............... 1

• Solvent/Cleaner (Page 17) ......................... 1

• Mineral Spirits ............................. As Needed

• Wood Block ................................................ 1

• Disposable Shop Rags ............................... 1

• Brass Hammer ........................................... 1

• Lifting Sling (Rated for at least 2800 lbs.) . . 2

• Lifting Equipment

(Rated for at least 2800 lbs.) ...................... 1

• Mounting Hardware (Page 20) ... As Needed

HEAV Y LIFT! Straining or crushing injury may occur from improperly lifting machine or some of its parts. To reduce this risk,

and use a forklift (or other lifting equipment) rated for weight of this machine.

Unpacking

for advice.

SUFFOCATION HAZARD!

machine. Discard immediately.

Model G0757Z (Mfd. Since 02/15)

-15-

Inventory

The following is a list of items shipped with your machine. Before beginning setup, lay these items out and inventory them.

If any non-proprietary parts are missing (e.g. a nut or a washer), we will gladly replace them; or for the sake of expediency, replacements can be obtained at your local hardware store.

NOTICE

If you cannot find an item on this list, carefully check around/inside the machine and packaging materials. Often, these items get lost in packaging materials while unpacking or they are pre-installed at the factory.

Wood Crate (Figure 7) Qty

I. Bottle for Oil ............................................... 1

J. Drift Key ...................................................... 1

K. End Mill Arbor R-8–1" ................................. 1

L. Knee Crank Handle .................................... 1

M. Knee Crank ................................................ 1

N. Hardware Bag ............................................ 1

— T-Bolts M14-2 x 60 .................................. 2

— Flat Washers 14mm ................................ 2

—Hex Nuts M14-2 ...................................... 2

—Hex Wrenches 3, 4, 5, 6, 8mm .........1 Ea.

O. Vertical Spindle Drawbar P. Horizontal Spindle Drawbar

⁄16"–20 x 13 3⁄4" ............................................ 1

Q. Horizontal Arbor 1

R. Horizontal Arbor 1" Dia. w/Spacers ............ 1

⁄4" Dia. w/Spacers ......... 1

⁄16"–20 x 20" ...... 1

Toolbox (Figure 6) Qty

A. Handwheel Handles ................................... 3

B. Coarse Downfeed Handle (2 Installed) ...... 1

C. Open-End Wrench 22/24mm...................... 1

D. Open-End Wrench 17/19mm ...................... 1

E. Drill Chuck B16, 1–13mm ........................... 1

—Chuck Key .............................................. 1

F. Spindle Sleeve R-8–MT#3 ......................... 1

G. Drill Chuck Arbor R-8–B16 ......................... 1

H. Spindle Sleeve MT#3–MT#2 ...................... 1

Figure 7. Wood crate inventory.

Figure 6. Toolbox inventory.

-16 -

Model G0757Z (Mfd. Since 02/15)

The unpainted surfaces of your machine are coated with a heavy-duty rust preventative that prevents corrosion during shipment and storage. This rust preventative works extremely well, but it will take a little time to clean.

Be patient and do a thorough job cleaning your machine. The time you spend doing this now will give you a better appreciation for the proper care of your machine's unpainted surfaces.

There are many ways to remove this rust preventative, but the following steps work well in a wide variety of situations. Always follow the manufacturer’s instructions with any cleaning product you use and make sure you work in a well-ventilated area to minimize exposure to toxic fumes.

Before cleaning, gather the following:

• Disposable rags

• Cleaner/degreaser (WD•40 works well)

• Safety glasses & disposable gloves

• Plastic paint scraper (optional)

Basic steps for removing rust preventative:

Many cleaning solvents

work in a well-ventilated

Avoid chlorine-based solvents, such as

Cleanup

Gasoline and petroleum products have low flash points and can explode or cause fire if used to clean machinery. Avoid using these products to clean machinery.

Put on safety glasses.

Coat the rust preventative with a liberal

amount of cleaner/degreaser, then let it soak for 5–10 minutes.

Wipe off the surfaces. If your cleaner/degreas-

er is effective, the rust preventative will wipe off easily. If you have a plastic paint scraper, scrape off as much as you can first, then wipe off the rest with the rag.

Repeat Steps 2–3 as necessary until clean,

then coat all unpainted surfaces with a quality metal protectant to prevent rust.

are toxic if inhaled. Only

area.

NOTICE

acetone or brake parts cleaner, that may damage painted surfaces.

T23692—Orange Power Degreaser

A great product for removing the waxy shipping grease from the non-painted parts of the machine during clean up.

Figure 8. T23692 Orange Power Degreaser.

Model G0757Z (Mfd. Since 02/15)

-17-

Site Considerations

Weight Load

Physical Environment

Place this machine near an existing power source.

Shadows, glare, or strobe effects that may distract or impede the operator must be eliminated.

Refer to the Machine Data Sheet for the weight of your machine. Make sure that the surface upon which the machine is placed will bear the weight of the machine, additional equipment that may be installed on the machine, and the heaviest workpiece that will be used. Additionally, consider the weight of the operator and any dynamic loading that may occur when operating the machine.

Space Allocation

Consider the largest size of workpiece that will be processed through this machine and provide enough space around the machine for adequate operator material handling or the installation of auxiliary equipment. With permanent installations, leave enough space around the machine to open or remove doors/covers as required by the maintenance and service described in this manual.

See below for required space allocation.

Children or untrained people may be seriously injured by this machine. Only install in an access restricted location.

The physical environment where the machine is operated is important for safe operation and longevity of machine components. For best results, operate this machine in a dry environment that is free from excessive moisture, hazardous chemicals, airborne abrasives, or extreme conditions. Extreme conditions for this type of machinery are generally those where the ambient temperature range exceeds 41°–104°F; the relative humidity range exceeds 20–95% (non-condensing); or the environment is subject to vibration, shocks, or bumps.

Electrical Installation

Make sure all power cords are protected from traffic, material handling, moisture, chemicals, or other hazards. Make sure to leave access to a means of disconnecting the power source or engaging a lockout/tagout device, if required.

Lighting

Lighting around the machine must be adequate enough that operations can be performed safely.

-18-

Wall

30"

Minimum

Clearance

30"

Minimum

Clearance

Figure 9. Minimum working clearances.

58"

76"

Model G0757Z (Mfd. Since 02/15)

Lifting & Placing

get help from other people

HEAV Y LIFT! Straining or crushing injury may occur from improperly lifting machine or some of its parts. To reduce this risk,

and use a forklift (or other lifting equipment) rated for weight of this machine.

Power lifting equipment rated for at least 50% more than the weight of the machine and at least two other people are required to lift and place the mill.

To lift and move mill:

Note: After repositioning ram and headstock,

make sure they are locked in place to prevent unexpected movement while lifting.

4. Torque four turret lock bolts (two on each side of ram, as shown in Figure 11) to 47 ft/ lbs. This will help keep ram from unexpectedly moving from force of lifting slings.

Turret Locking Bolts

(2 of 4)

1. Remove crate from shipping pallet, then while still on pallet, move machine to installation location.

2. Remove horizontal arbor support, and extend ram so it will clear DRO.

3. Rotate ram 180° clockwise so headstock faces backwards (see Figure 10).

Refer to Head Tilt on Page 29 and Ram

Movement on Page 30 for detailed instructions to help with this step.

Figure 11. Locations of turret locking bolts.

5. Place lifting slings under ram and connect to

a safety hook, as illustrated in Figure 10.

Note: Place protective material between

slings and mill to protect ram and ways, and to prevent cutting lifting slings.

6. Unbolt mill from shipping pallet.

7. With other people steadying load to keep it

from swaying, lift machine a couple of inches.

— If mill tips to one side, lower it to the pallet

and adjust ram or table to balance load. Make sure to retighten lock levers and bolts before lifting mill again.

— If mill lifts evenly, remove shipping pallet

and lower mill into final position.

8. Rotate ram 180° counterclockwise so headstock faces forwards, then re-install horizontal arbor support.

Figure 10. Using lifting slings to lift and move

Model G0757Z (Mfd. Since 02/15)

mill.

-19 -

Anchoring machinery to the floor prevents tipping or shifting and reduces vibration that may occur during operation, resulting in a machine that runs slightly quieter and feels more solid.

If the machine will be installed in a commercial or workplace setting, or if it is permanently connected (hardwired) to the power supply, local codes may require that it be anchored to the floor.

If not required by any local codes, fastening the machine to the floor is an optional step. If you choose not to do this with your machine, we recommend placing it on machine mounts, as these provide an easy method for leveling and they have vibration-absorbing pads.

Lag shield anchors with lag screws (see below) are a popular way to anchor machinery to a concrete floor, because the anchors sit flush with the floor surface, making it easy to unbolt and move the machine later, if needed. However, anytime local codes apply, you MUST follow the anchoring methodology specified by the code.

Leveling

Leveling machinery helps precision components, such as dovetail ways, remain straight and flat during the lifespan of the machine. Components on an unleveled machine may slowly twist due to the dynamic loads placed on the machine during operation.

For best results, use a precision level that is at least 12" long and sensitive enough to show a distinct movement when a 0.003" shim (approximately the thickness of one sheet of standard newspaper) is placed under one end of the level.

See Figure 12 for an example of a high precision level available from Grizzly.

Anchoring to Floor

Number of Mounting Holes ............................ 4

Diameter of Mounting Hardware .................

⁄2"

Figure 12. Example of a precision level

(Model H2683 shown).

Anchoring to Concrete Floors

Lag Screw

Flat Washer

Machine Base

Concrete

Figure 13. Popular method for anchoring

machinery to a concrete floor.

Lag Shield Anchor

Drilled Hole

-20-

Model G0757Z (Mfd. Since 02/15)

Arbor/Chuck

An arbor is included for the drill chuck that comes with this machine. The following procedure describes how to install the arbor in the chuck.

After the arbor is installed in the drill chuck, it is very difficult to separate the assembly. If you would like to use a different chuck in the future, we recommend obtaining a new arbor.

Important: DO NOT install the drill chuck and arbor assembly into the spindle until AFTER the test run.

To join drill chuck and arbor:

clean drill

5. Attempt to separate drill chuck and arbor by hand —if they separate, repeat Steps 3–4.

Assembly

Use acetone or lacquer thinner to chuck and arbor mating surfaces, especially the bore.

Retract chuck jaws completely into chuck.

Verifying Lubrication

GEARBOX MUST

BE FILLED WITH OIL!

OIL MAY NOT BE

SHIPPED WITH MACHINE!

Refer to Lubrication Section

for Correct Oil Type.

This machine was shipped from the factory with oil in it, but the headstock oil reservoir level must be verified before the mill can be operated for the first time. Refer to the Lubrication section, begin- ning on Page 45, for details on how to check oil.

Insert small end of arbor into chuck.

Hold assembly by the arbor and tap chuck onto a block of wood with medium force, as illustrated below.

Figure 14. Arbor/chuck assembly.

Damage caused by running the mill without oil in the reservoir will not be covered under warranty.

Model G0757Z (Mfd. Since 02/15)

-21-

Assembly

3. Thread coarse downfeed handle into coarse

downfeed hub (see Figure 17).

Your mill comes from the factory mostly assembled. To complete assembly you must install:

• X-Axis handwheel handles

• Y-Axis handwheel handle

• Z-Axis crank

• Coarse downfeed handle

• Fine downfeed handwheel handle

Tools Needed Qty

Open-End Wrench 14, 19mm ...................... 1 Ea.

Flathead Screwdriver ..........................................1

To assemble mill:

1. Install handwheel handles onto X-axis and

Y-axis handwheels (see Figure 15).

X-Axis

Handwheel

4. Remove fine downfeed handle from rear of fine downfeed handwheel and thread into front of handwheel (see Figure 17).

Fine

Downfeed

Handwheel

Coarse

Downfeed Hub

Figure 17. Downfeed components assembeled.

Y-Axis

Handwheel

Figure 15. Locations of X-axis and Y-axis

handwheels.

2. Slide Z-axis crank onto square spindle (see Figure 16).

Square Spindle

Figure 16. Location of square spindle.

-22-

Model G0757Z (Mfd. Since 02/15)

Power Connection

DO NOT start machine until all preceding setup instructions have been performed. Operating an improperly set up machine

Serious injury or death can result from

Electrocution or fire can occur if machine is ungrounded, incorrectly connected to power, or connected to an undersized circuit. Use an electrician or a qualified service personnel to ensure a safe power connection.

Before the machine can be connected to the power supply, there must be an electrical circuit that meets the Circuit Requirements on Page 13, and the correct plug must be installed according to the instructions and wiring diagrams provided by the plug manufacturer.

Test Run

Once assembly is complete, test run the machine to ensure it is properly connected to power and safety components function properly.

The test run consists of the following: 1) The vertical and horizontal spindle motors run correctly,

2) the E-STOP button and column interlock safety features work correctly, and 3) the power feed unit works correctly.

If you find an unusual problem during the test run, immediately stop the machine, disconnect it from power, and fix the problem BEFORE operating the machine again. The Troubleshooting table in the SERVICE section of this manual can help.

If the plug manufacturer did not include instructions, the wiring of a generic NEMA 6-15 plug is illustrated in the Wiring section on Page 63.

To minimize the risk of electrocution, fire, or equipment damage, installation work and electrical wiring MUST be done by an electrician or qualified service personnel.

Note About Extension Cords: Using an incor- rectly sized extension cord may decrease the life of electrical components on your machine. Refer to Extension Cords on Page 14 for more information.

using this machine BEFORE understanding its controls and related safety information. DO NOT operate, or allow others to operate, machine until the information is understood.

may result in malfunction or unexpected results that can lead to serious injury, death, or machine/property damage.

Mill Test Run

1. Clear all setup tools away from machine.

2. Set horizontal spindle to 72 RPM (see Page 35 for details on how to change speeds).

Note: Make sure to close and tighten column

rear cover so interlock switch is set. Mill will not run if this is not done.

Model G0757Z (Mfd. Since 02/15)

-23-

3. Push E-STOP button to avoid unexpected start up when machine is connected to power.

4. Connect mill to power source specified in SECTION 2: POWER SUPPLY on Page 13.

5. Turn master power switch ON.

6. Twist E-STOP button clockwise until it pops out—this resets it for operation (see Figure

18).

To Reset Switch...

Twist Button

Clockwise

OFF

10. Stop spindle rotation and wait for spindle to completely stop.

11. Repeat Steps 8–10 with vertical spindle reverse rotation.

12. Repeat Steps 8–11 with horizontal spindle.

13. Press E-STOP button on control panel.

14. WITHOUT resetting E-STOP button, attempt

to start vertical spindle rotation. Machine should not start.

— If machine does start (with the E-STOP

button pushed in), immediately disconnect power to the machine. The E-STOP button safety feature is not working correctly. This safety feature must work properly before proceeding with regular operations. Call Tech Support for help.

Figure 18. Resetting the E-STOP button.

7. Press POWER button on control panel to

enable power to machine—power button and spindle RPM readout should light.

8. Turn variable-speed dial fully counterclockwise, then press FORWARD button (vertical spindle). Rotate variable-speed dial clockwise until 100 RPM is reached.

9. Listen for abnormal noises and watch for anything unexpected from mill. It should run smoothly and without excessive vibration or rubbing noises.

— Vertical spindle motor is equipped with an

independent high CFM fan that is always on, and a variable frequency drive which causes the motor to emit a humming noise during normal operation.

— Strange or unusual noises or actions

must be investigated immediately. Turn machine OFF and disconnect it from the power source before investigating or correcting potential problems.

15. Open column rear cover.

16. Reset E-STOP button.

17. WITHOUT closing column rear cover, press

POWER button. Machine should not start.

— If machine does start (with the column

rear cover open), immediately disconnect power to the machine. The column rear cover interlock switch safety feature is not working correctly. This safety feature must work properly before proceeding with regular operations. Call Tech Support for help.

18. Close column rear cover, and fully tighten bolt.

-24-

Model G0757Z (Mfd. Since 02/15)

Power Feed Test Run

The spindle break-in procedure distributes lubrication

reduce the risk

of early

if there are any "dry" spots or areas where lubrication has settled in the bearings. You placing first time when the machine is new or if it has been sitting idle for longer than 6 months.

Always start the spindle break-in at the lowest speed to minimize wear if there Allow the spindle to run long enough to warm up and distribute the bearing grease, then incrementally increase spindle speeds and repeat this process at each speed until reaching the maximum spindle speed. Following the break-in procedure in this progressive manner helps minimize any potential wear that could occur before lubrication is fully distributed.

The mill comes with a power feed unit for X-axis table travel. Proper operation of the limit switch attached to the front middle of the table is critical for the safe use of this power feed unit. If the power feed does not operate as expected during the following steps, disconnect it from power and contact our Tech Support at (570) 546-9663 for assistance.

To test power feed:

1. Make sure all tools, cables, and other items

are well clear of table movement as you follow these steps.

2. Refer to X-axis Power Feed identification on Page 6 to understand how power feed, table

locks, and limit switch function.

3. Loosen X-axis table locks on front of table.

4. Make sure power feed directional lever is

in neutral (middle) position, turn speed dial counterclockwise to lowest setting, then turn power feed ON.

5. Move direction knob to left, slowly rotate speed dial clockwise to increase speed, then confirm table is moving left.

Spindle Break-In

throughout the bearings to

bearing failure

must complete this procedure before

operational loads on the spindle for the

are dry spots.

Complete spindle bearing break-in procedure to prevent rapid wear and tear of spindle components once mill is placed into operation.

6. Watch for table limit stop to hit limit switch

and turn power feed OFF, stopping table movement.

7. Move direction knob through neutral (middle) position and all the way right. Table should begin moving right.

8. Confirm table stops moving when limit stop presses against limit switch plunger.

9. Move direction knob to neutral (middle) position, turn speed dial counterclockwise to lowest setting, and turn power feed OFF.

Congratulations! The Test Run of the mill is complete. Continue to the next page to perform the Spindle Break-In and Inspections & Adjustments procedures.

Model G0757Z (Mfd. Since 02/15)

DO NOT perform this procedure independently of Test Run section. Mill could be seriously damaged if controls are set differently than instructed in that section.

Vertical Spindle Break-In

1. Run vertical spindle at 100 RPM for 10

minutes (see Page 35 for details on how to change speeds).

2. Reverse spindle rotation direction and run spindle for an additional 10 minutes.

3. Run spindle for 5 minutes in each direction of spindle rotation at the following speeds: 250, 500, 1000, 1500, and 2000 RPM. Make sure to only increase speeds in the order shown.

-25-

Horizontal Spindle Break-In

1. Run horizontal spindle at 72 RPM for 10

minutes (see Page 35 for details on how to change speeds).

Inspections &

Adjustments

2. Reverse spindle rotation direction and run

spindle for an additional 10 minutes.

3. Run spindle for 5 minutes in each direction of spindle rotation. Run following speeds: 210, 550 and 1300 RPM. Make sure to only increase speeds in the order shown.

Congratulations! Spindle Break-In is complete. We recommend changing the headstock oil before operating the machine further (refer to Lubrication on Page 46.

The following list of adjustments were performed at the factory before the machine was shipped:

• X-Axis Leadscrew Backlash ........... Page 60

• Gib Adjustments ..............................Page 61

Be aware that machine components can shift during the shipping process. Pay careful attention to these adjustments during operation of the machine. If you find that the adjustments are not set according to the procedures in this manual or your personal preferences, re-adjust them.

Since the head has been moved around for shipping purposes, you will need to tram it so that the spindle is perpendicular to the table. Refer to the Tramming Spindle section on Page 58 for detailed instructions.

During the first 16 hours of use, the V-belts will stretch and seat into the pulley grooves. The V-belts must be properly tensioned after this period to ensure proper power transmission and avoid reducing the life of the belts. Refer to V-Belt Service on Page 52 for detailed instructions.

-26-

Model G0757Z (Mfd. Since 02/15)

SECTION 4: OPERATIONS

The purpose of this overview is to provide the novice machine operator with a basic understanding of how the machine is used during operation, so the

discussed later

in this manual

Due to the generic nature of this overview, it is not intended to be an instructional guide. To learn more about specific operations, read this entire manual and

rienced research outside of this manual by reading "howto" books, trade magazines, or websites.

To reduce your risk of serious injury, read this entire manual BEFORE

Operation Overview

To complete a typical operation, the operator does the following:

1. Examines workpiece to make sure it is suit-

able for operation.

machine controls/components

are easier to understand.

seek additional training from expe

machine operators, and do additional

using machine.

To reduce risk of eye or face injury from flying chips, always wear approved safety glasses and a face shield when operating this machine.

2. Firmly clamps workpiece to table or a mill

vise.

3. Installs correct cutting tool for operation.

4. Uses downfeed and table controls to cor-

rectly position cutting tool and workpiece for operation. If X-axis power feed will be used during operation, operator confirms speed and length of table movement required.

5. Configures machine for correct spindle speed of operation.

6. Puts on personal protective gear, and makes sure workpiece and table are clear of all tools, cords, and other items.

7. Turns machine ON, then starts spindle rota- tion and performs operation.

8. Turns machine OFF.

If you are not experienced with this type of machine, WE STRONGLY RECOMMEND that you seek additional training outside of this manual. Read books/magazines or get formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training.

Model G0757Z (Mfd. Since 02/15)

-27-

Table Movement

The table travels in three directions, as illustrated in Figure 19.

These movements are controlled by table handwheels and the Z-axis crank. Additionally, the table can be moved along the X-axis with the power feed and manually rotated 45° left and right.

X-Axis or Longitudinal Travel

(Left & Right)

Y-Axis or Cross Travel (In & Out)

Table Locks

Use table locks to increase the rigidity of the table when movement in that axis is not required for the operation.

Refer to Figure 21 to identify the locks for each table axis.

Limit Stops

Use limit stops in conjunction with the powerfeed to set the total amount of travel. The limit stops come into contact with the limit switch and stop powerfeed motion.

Refer to Figure 21 to identify the limit stops.

X-Axis Locks

Z-Axis or

Vertical Elevation

(Up & Down)

Figure 19. The directions of table movement.

Graduated Index Rings

The table handwheels and Z-axis crank have graduated rings (see Figure 20) that are used to determine table movement in 0.001" increments with one full revolution equaling 0.200" of travel.

Additionally, each dial has a thumbscrew that is used to adjust the dial to zero.

Graduated

Rings

Limit Stop

Y-Axis

Locks

Figure 21. Locations of table locks.

Always keep table locked in place unless table movement is required for your operation. Unexpected table and workpiece movement could cause tooling to bind with workpiece, which may damage tooling or workpiece.

Z-Axis

Locks

Figure 20. Locations of graduated rings.

-28-

Model G0757Z (Mfd. Since 02/15)

Table Rotation

The table rotates 45° left or right (see Figure 22).

Head Tilt

Hex Nuts

(2 of 4)

Table

Knee

Figure 22. Table rotated 45° to the right.

Tool Needed Qty

Open-End Wrench 19mm .................................. 1

To rotate table:

1. DISCONNECT MACHINE FROM POWER!

2. Remove as many items from table as pos-

sible. This makes rotating table easier.

The head tilts 90° left or right at the end of the ram.

When positioning head back to 0° after tilting it, you will need to tram it to ensure spindle is precisely perpendicular to table to ensure proper milling accuracy. Refer to Tramming Spindle section on Page 58 for detailed instructions.

Tools Needed Qty

Open-End Wrench 19mm .................................. 1

Open-End Wrench 24mm .................................. 1

To tilt head:

1. DISCONNECT MACHINE FROM POWER!

2. Loosen three hex nuts (one on each side of

head and one underneath) that secure head to ram (see Figure 23).

3. Loosen four hex nuts that secure table to knee (see Figure 22).

Note: There are two additional hex nuts

behind table.

4. Using angle scale on table knee as a guide, rotate table to desired position.

5. Retighten four hex nuts that secure table to knee before resuming operation.

Scale

Hex Nut

(1 of 3)

Figure 23. Head tilting controls.

3. With assistance from another person to sup-

port head, turn tilting bolt until head is in desired position.

Note: Use angle scale shown in Figure 23 as

a guide for setting tilt angle.

4. Retighten hex nuts that secure head to ram before resuming operation.

Tilting

Bolt

Model G0757Z (Mfd. Since 02/15)

-29-

Ram Movement

Rotating Ram On Turret

1. DISCONNECT MACHINE FROM POWER!

The ram travels forward/backward 11" and rotates 180° on the turret.

Tools Needed Qty

Open-End Wrench 15mm .................................. 1

Open-End Wrench 24mm .................................. 1

Moving Ram Forward/Backward

1. DISCONNECT MACHINE FROM POWER!

2. Loosen two lock handles shown in Figure 24.

Lock Handles

2. Loosen four hex nuts (two on each side of ram) that secure ram to turret (see Figure 25).

Horizontal

Arbor Support

Figure 25. Ram rotation hex nuts.

3. Make sure that cables and hoses are not

entangled or stretched, and that work lamp and DRO are clear of rotation path as you move ram on turret.

Hex Nuts

(2 of 4)

Pinion Gear Bolt

Figure 24. Ram back-and-forth controls.

3. Rotate pinion gear bolt to move ram until

spindle is in desired position.

4. Retighten lock handles to secure ram movement before resuming operation.

— If rotating ram 180 degrees, horizontal

arbor support must be removed to provide clearance for control panel and DRO (see

Figure 25).

4. Retighten four hex nuts that secure ram on

turret before resuming operation.

-30-

Model G0757Z (Mfd. Since 02/15)

Installing/Removing

Tooling

Vertical Spindle

Tooling is held in the vertical spindle by a combination of the R-8 taper, a pin inside the spindle, and a

⁄16"-20 drawbar.

Tools Needed Qty

Open-End Wrench 19mm .................................. 1

Brass Hammer .................................................. 1

Installing Vertical Spindle Tooling

1. DISCONNECT MACHINE FROM POWER!

2. Clean any debris or surface substances from

inside spindle taper and mating surface of tooling.

The Model G0757Z includes the following vertical spindle tools (see Figure 28):

A. B16 Drill Chuck w/R-8–B16 Arbor. Refer to

Arbor/Chuck Assembly on Page 21.

B. R-8–MT#3 Spindle Sleeve. Used for MT#3

tools and will accommodate tools with a tang. It also has a drift key slot for tool removal.

C. MT#3–MT#2 Spindle Sleeve. Used for MT#2

tools and will accommodate tools with a tang. It also has a drift key slot for tool removal.

D. R-8–1" End Mill Arbor. Arbor accepts 1"

bore mill cutters.

E. Drift Key: Use for tool removal.

Tang

Note: Debris or oily substances can prevent

tooling and spindle from properly mating. This condition can cause excessive vibration, poor cutting results, or tool/workpiece damage.

3. Align tooling keyway with pin inside spindle taper, then firmly push tooling into spindle to seat it.

Cutting tools are sharp and can easily cause laceration injuries. Use heavy leather gloves or shop rags to protect your hands when handling cutting tools.

Drift Key Slot

Figure 26. Vertical spindle tools included with

model G0757Z.

Model G0757Z (Mfd. Since 02/15)

-31-

4. With one hand holding tooling in place, insert vertical drawbar (longer of two drawbars) into spindle from top of head, then thread it into tooling (see Figure 27).

Note: Drawbar has an adjustment hex nut

(see Figure 27) that is used to raise/lower drawbar to compensate for different tooling lengths.

Vertical

Drawbar

Adjustment

Hex Nut

Installing Horizontal Spindle & Tooling

Single or multiple cutters (gang milling) can be arranged anywhere along the length of the arbor for simple to very complex cutting operations.

The Model G0757Z includes the following horizontal spindle tools (see Figure 28):

A. 1

B. 1" Dia. Horizontal Arbor w/Spacers. Used

⁄4" Dia. Horizontal Arbor w/Spacers. Used

for horizontal milling operations with 1

⁄4" bore

cutters.

for horizontal milling operations with 1" bore cutters.

Figure 27. Vertical drawbar inserted in spindle.

5. Tighten drawbar until it is snug. Avoid over-

tightening, as this could make removing tooling difficult later.

Removing Vertical Spindle Tooling

1. DISCONNECT MACHINE FROM POWER!

Note: Make sure drawbar has at least three

threads engaged with tooling in next step to avoid damaging drawbar threads or tool.

2. Loosen drawbar a couple of turns, then tap top of it with a brass hammer to knock taper between spindle and tooling loose.

3. Support tooling with one hand, then completely unthread drawbar from tooling.

Figure 28. Horizontal arbors included with

G0757Z.

-32-

Model G0757Z (Mfd. Since 02/15)

Tools Needed Qty

Open-End Wrench 19mm .................................. 1

Open-End Wrench 24mm .................................. 2

Open-End Wrench 32mm .................................. 1

Brass Hammer .................................................. 1

To install horizontal tooling:

1. DISCONNECT MACHINE FROM POWER!

2. Loosen locking bolt on side of arbor support,

and slide support off ram dovetail way (see

Figure 29).

4. Extend ram all the way forward.

5. Open column rear cover to gain access to

rear of horizontal spindle.

Note: Opening the column rear cover acti-

vates interlock safety switch.

6. Clean any debris or surface substances from inside spindle taper and mating surface of arbor.

7. Align keyway of arbor with protruding pin inside spindle taper, then firmly push arbor into spindle to seat it (see Figure 30).

Ram Rotation

Hex Nuts (2 of 4)

Locking Bolt

Horizontal

Arbor Support

Figure 29. Horizontal arbor support, locking bolt,

and ram rotation hex nut locations.

3. Loosen ram rotation hex nuts (Figure 29), then rotate ram 180°, as shown in Figure 30.

Note: Make sure "0" marks on ram base and

angle scale are aligned and four ram rotation hex nuts are retightened.

8. With one hand holding arbor in place, insert horizontal drawbar (shorter of two drawbars) into spindle from rear of column, then thread it into arbor.

9. Tighten drawbar until it is snug. Avoid overtightening, as this could make removing arbor difficult later.

Cutting tools are sharp and can easily cause laceration injuries. Use heavy leather gloves or shop rags to protect your hands when handling cutting tools.

Arbor

Horizontal

Spindle

Figure 30. Horizontal arbor seated in spindle

with ram fully extended and rotated 180 degrees.

Model G0757Z (Mfd. Since 02/15)

-33-

10. Add ISO 68 oil or equivalent to horizontal spindle and arbor support ball oilers (refer to

Ball Oilers, beginning on Page 47).

Removing Horizontal Spindle Tooling

1. DISCONNECT MACHINE FROM POWER!

11. Install cutter(s) and spacers on arbor in such

a way that last spacer is inside brass bushing and arbor threads are fully exposed as you slide arbor support back onto ram dovetail ways (see Figure 31).

12. Secure arbor support by retightening support locking bolt.

13. Secure arbor assembly with right-hand arbor nut (see Figure 31).

Brass

Bushing

Tooling

Right-Hand

Arbor Nut

2. Open column rear cover to gain access to rear of horizontal spindle.

Note: Opening the column rear cover acti-

vates interlock safety switch.

3. Remove arbor nut from arbor, then remove arbor support from ram dovetail ways.

Note: Make sure drawbar has at least three

threads engaged with arbor in next step to avoid damaging drawbar threads or arbor.

4. Loosen drawbar a couple of turns. Then tap end of drawbar with a brass hammer to knock taper loose between spindle and arbor.

5. Support arbor with one hand, then completely unthread drawbar from arbor.

6. Remove arbor.

7. Re-install arbor support and properly position

and secure ram for next operation.

Figure 31. Horizontal arbor and cutter installed.

14. Close and secure column rear cover.

Note: Failure to secure the column rear cover

will leave interlock active, and mill will not run.

8. Close and secure column rear cover.

Note: Failure to secure the column rear cover

will leave interlock active, and mill will not run.

-34-

Model G0757Z (Mfd. Since 02/15)

Spindle Speed

Using the correct spindle speed is important for safe and satisfactory results, as well as maximizing tool life.

To set the spindle speed for your operation, you will need to: (1) Determine the best spindle speed for the cutting task, and (2) configure the mill controls to match the closest spindle speed.

Determining Spindle Speed

Many variables affect the optimum spindle speed to use for any given operation, but the two most important are the recommended cutting speed for the workpiece material and the diameter of the cutting tool, as noted in Figure 32:

Recommended

Cutting Speed (FPM) x 12

Tool Diameter (in inches) x 3.14

= RPM

Cutting Speeds for High Speed Steel (HSS)

Cutting Tools

Workpiece Material Cutting Speed (sfm)

Aluminum & Aluminum Alloys 300

Brass & Bronze 150

Copper 100

Cast Iron, soft 80

Cast Iron, hard 50

Mild Steel 90

Cast Steel 80

Alloy Steel, hard 40

Tool Steel 50

Stainless Steel 60

Titanium 50

Plastics 300-800

Wood 300-500

Note: For carbide cutting tools, double the cut-

ting speed. These values are a guideline only. Refer to the MACHINERY'S HANDBOOK for more detailed information.

Figure 33. Cutting speed table.

Double if using carbide cutting tool

Figure 32. Spindle speed formula for milling.

Cutting speed, typically defined in feet per minute (FPM), is the speed at which the edge of a tool moves across the material surface.

A recommended cutting speed is an ideal speed for cutting a type of material in order to produce the desired finish and optimize tool life.

The books Machinery’s Handbook or Machine Shop Practice, and some internet sites, provide excellent recommendations for which cutting speeds to use when calculating the spindle speed. These sources also provide a wealth of additional information about the variables that affect cutting speed and are a good educational resource.

Also, there are a large number of easy-to-use spindle speed calculators that can be found on the internet. These sources will help you take into account all applicable variables to determine the best spindle speed for the operation.

To avoid damaging the spindle, gears, or cutting tools when setting the spindle speed range:

• Spindle rotation must be turned OFF and the spindle must be at a complete stop BEFORE you change the spindle speed range.

• To avoid damaging the moving parts inside the headstock, never start spindle rotation without the range selector detent pin firmly seated in either the high or low position.

• When the spindle speed range is changed, the spindle rotation direction reverses. You will need to either change the cutting tool to match the direction of spindle rotation or use the spindle direction switch to compensate for the reversal.

Model G0757Z (Mfd. Since 02/15)

-35-

Setting Vertical Spindle Speed

1. Select appropriate speed range using high/

low gear selector (see Figure 34).

"L" represents low speed range, which is

capable of spindle speeds from 100–600 RPM. "H" represents high range, which maximizes spindle torque and is capable of spindle speeds from 350–2000 RPM.

Figure 34. High/Low gear selector in "L"

position.

Setting Horizontal Spindle Speed

Tools Needed Qty

Open-End Wrench 24mm .................................. 1

Dead Blow Hammer .......................................... 1

Hex Wrench 8mm .............................................. 1

To set horizontal spindle speed:

1. DISCONNECT MACHINE FROM POWER!

2. Open column rear cover to gain access to

horizontal spindle V-belts and pulleys, as shown in Figure 36.

Lower

Hex Nut

Behind Bracket

Idler

Pulley

Note: It may be necessary to rotate vertical

spindle by hand to enable gears to mesh properly.

2. Rotate variable-speed dial fully counterclockwise (slowest), then press power button and use vertical spindle direction buttons to choose direction of spindle travel and start spindle rotation (see Figure 35).

RPM Readout

Vertical Spindle

Direction Buttons

Power

Button

Variable-Speed Dial

Tension

Thumbwheel

Figure 36. Horizontal spindle V-belts and pulleys

(cover removed for photo clarity).

3. Loosen tension thumb wheel and hex nut behind lower idler pulley bracket.

4. Move lower idler pulley to right to release V-belt tension.

Note: You may have to bump lower idler pul-

ley with dead blow hammer to get it to move.

Figure 35. Controls to adjust spindle speed.

3. Watching vertical spindle RPM readout,

rotate variable-speed dial until desired RPM is reached.

-36-

Model G0757Z (Mfd. Since 02/15)

5. Arrange V-belts for desired horizontal spindle

Vertical Spindle Speeds

285 860

1320 1720 2300

D – E D – G

A – F

A – G

B – G

C – E D – F B – E C – F

390 490 585 665

RPM RPM

Spindle Motor

Upper

Motor

Horizontal Spindle Speeds

72 A – G

B – G C – G

A – F

170 210 240

RPM

A – E290

B – F550 C – E830 B – D1300

speed (see Figure 37).

Using Spindle

Note: Horizontal spindle speed chart shown

below is also on side of column.

Figure 37. Horizontal spindle speed chart.

6. Apply pressure on lower idler pulley to left as

you tighten tension thumbwheel.

Note: There is proper V-belt tension when

approximately by applying moderate pressure midway between pulleys as shown in Figure 38.

⁄4" –1⁄2" deflection is achieved

⁄4"–1⁄2"

Deflection

Figure 38. Checking V-belt tension.

Pulley

Downfeed Controls

Use Figure 39 and the descriptions below to understand the downfeed components that control the 5" spindle downfeed travel.

Fine

Downfeed

Handwheel

Quill

Lock

Downfeed Lever

Figure 39. Spindle downfeed controls.

Coarse Downfeed Levers: Manually control

downfeed travel in a rapid manner. Generally used for drilling operations. Spindle automatically returns to top position when pressure is released from the handle.

Fine Downfeed Handwheel: Manually controls downfeed travel in a slow, precise manner. Unlike coarse downfeed, spindle does not automatically retract. The attached graduated dial has incre ments of 0.001" with one full revolution representing 0.100" of travel. Generally used for milling

perations.

Selection Lever: When tightened, enables the fine downfeed handwheel; conversely, when loos ened enables the coarse downfeed levers.

Selection

Lever

Coarse

7. Retighten hex nut behind lower idler pulley bracket.

8. Close and latch V-belt cover.

Model G0757Z (Mfd. Since 02/15)

uill Lock: Secures the quill in place for increased

stability during milling operations.

-37-

Coarse Downfeed

When coarse downfeed is engaged, pull coarse downfeed levers to lower the spindle. An internal coil spring helps raise the spindle up when you stop applying downward pressure on the lever.

Note: To maintain control of the upward spindle travel and the rotating bit in your workpiece, always continue holding the lever until the spindle returns to the top position. Letting go of the coarse downfeed levers when the spindle is in the lowered position will cause the spindle to retract too quickly and slam up into the headstock or lift the workpiece and cause it to spin out of control.

The coarse downfeed hub features a graduated dial that measures spindle movement in 1" increments, with one full revolution equaling 5.00" of spindle travel.

Fine Downfeed

When fine downfeed is engaged the spindle only moves up or down when the handwheel is rotated (there is no automatic spindle return to the top position, as with the coarse downfeed controls). This level of control allows the spindle height to be locked in place with quill lock when milling a flat surface across the face of a workpiece. In order to ensure the milled surface remains flat, the spindle height cannot move until the entire milling operation is complete.

The graduated dial on the fine downfeed handle measures spindle movement in 0.010" increments, with one full revolution equaling 0.100" of spindle travel.

Using Fine Downfeed Controls

In the following example, the fine downfeed controls are used to mill 0.010" off a workpiece:

1. Use Z-axis crank to adjust workpiece surface

just below cutting tool, then secure the headstock with Z-axis lock levers.

2. Tighten selection lever to engage fine downfeed handwheel.

3. Loosen quill lock.

4. Rotate fine downfeed handwheel clockwise

and lower cutting tool so it just touches workpiece.

5. Move workpiece out of the way.

6. Using graduated dial to gauge spindle move-

ment, rotate fine downfeed handwheel clockwise 0.010".

7. Tighten quill lock.

8. Turn mill ON and perform cutting pass.

-38-

Model G0757Z (Mfd. Since 02/15)

ACCESSORIES

Installing unapproved accessories may

order online at www.grizzly.com or call 1-800-523-4777

SECTION 5: ACCESSORIES

cause machine to malfunction, resulting in serious personal injury or machine damage. To reduce this risk, only install accessories recommended for this machine by Grizzly.

NOTICE

Refer to our website or latest catalog for additional recommended accessories.

T23964—Armor Plate with Moly-D MultiPurpose Grease, 14.5 oz. (NLGI#2 Equivalent)

Armor Plate with Moly-D is a rich green moly grease that provides excellent stability and unsurpassed performance under a wide range of temperatures and operating conditions. Armor Plate grease is entirely unique due to the fact that the moly in it is solubilized, which provides superior performance to other greases containing the black solid form of molybdenum disulfide.

T23962—ISO 68 Moly-D Way Oil, 5 Gal. T23963—ISO 32 Moly-D Machine Oil, 5 Gal. T26685—ISO 32 Moly-D Machine Oil, 1 Gal.

Moly-D oils are some of the best we've found for maintaining the critical components of machinery because they tend to resist run-off and maintain their lubricity under a variety of conditions—as well as reduce chatter or slip. Buy in bulk and save with 1- or 5-gallon quantities.

T23962 T23963 T26685

Figure 41. ISO 68 and ISO 32 machine oil.

H7615—High Pressure Oil Can, 5 Oz.

Whether you're lubricating cutting tools or maintaining machinery in top operating condition, you'll appreciate this High Pressure Oil Can. Holds 5 ounces of oil and has a trigger activated, high pressure pump. Colors may vary.

Figure 40. T23964 Armor Plate with Moly-D

Multi-Purpose Grease.

Model G0757Z (Mfd. Since 02/15)

Figure 42. H7615 High Pressure Oil Can.

-39-

G1075—52-Pc. Clamping Kit

This clamping kit includes 24 studs, 6 step block pairs, 6 T-nuts, 6 flange nuts, 4 coupling nuts, and 6 end hold-downs. The rack is slotted so it can be mounted close to the machine for easy access. Made for

⁄2 " T-slots.

Figure 43. G1075 Clamping Kit.

T10168 —3" Boring Head Set

This all-inclusive set features a precision 3" boring

head, R-8 shank, five-piece set of tipped boring bars, five-piece set of

ing bars,

⁄2 " to 3⁄4" adapter, wrenches, and fitted

⁄4" carbide-

⁄2 " HSS bor-

case.

T25702— 5-Pc. R-8 End Mill Holder Set

Hold various sized end mills in your R-8 spindle with this End Mill Holder Set. Includes holders for

⁄16", 3⁄8", 1⁄2 ", 5⁄8", and 3⁄4" end mills.

Figure 45. T25702 5-Pc. R-8 End Mill Holder

Set.

T26688—8-Pc. R-8 Quick Change Collet Set

These collets are hardened and ground for maximum holding power and ultra precision. Threaded for 7/16"-20 draw bars, this set has a maximum

runout of 0.001". Set includes collect chuck,

⁄16", 3⁄8", 1⁄2 ", 5⁄8", 3⁄4", and 1" collets, spanner

⁄4",

wrench, and moulded plastic case.

Figure 44. T10168 3" Boring Head Set.

-40-

Figure 46. T26688 Quick Change Collet Set.

Model G0757Z (Mfd. Since 02/15)

G9756—20-Pc. HSS End Mill Set

This High Speed Steel set features 2 flute and 4 flute end cutting end mills in the following sizes:

⁄16", 1⁄4", 5⁄16", 3⁄8", 7⁄16", 1⁄2 ", 9⁄16", 5⁄8", 11⁄16" and 3⁄4".

Sizes are marked in a durable molded case.

H5935—3-Pc. Fly Cutter Set w/Tool Bits 1/2"

Here is a 3-pc. Fly Cutter Set that's hard to beat! Each is supplied with black oxide finish, a setscrew flat and a blank high speed steel tool.

Figure 47. G9756 20-Pc. HSS End Mill Set.

G9760—20-Pc. 2 & 4 Flute TiN End Mill Set

Includes these sizes and styles in two and four

flute styles:

/16", and 3/4".

/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/8",

Figure 48. G9760 20-Pc End Mill Set.

Figure 49. H5935 3-Pc. Fly Cutter Set.

T10390—R-8 Holder for T10388 T10388—4" Milling Cutter H8323— 4" Face Mill Cutter

T10390

H8323

T10388

Figure 50. Assortment of cutting tools and

holder.

Model G0757Z (Mfd. Since 02/15)

-41-

G7066— 5" Tilting /Swiveling Milling Vise

Tilting and swiveling milling vise offers the ultimate in work set-up. Precision aligned jaws and easily accessible tilt and swivel clamps secure for positively worry-free operation. Worth its weight in gold!

Figure 51. G7066 5" Tilting/Swiveling Milling

Vise.

Tilt Tables G5758—5" x 7" x 3

⁄4"

G5759—7" x 10" x 5"

Set your work at any angle from -45° to +45° with these sturdy Tilt Tables. Heavy-duty construction

includes cision base.

⁄16" T-slots, two locking screws, and pre-

⁄2 " mounting slots.

G7156—4" (3 5⁄8") Precision Milling Vise

G7154—5" (4 G7155—6" (5

⁄2") Precision Milling Vise

⁄8") Precision Milling Vise

Swiveling Milling Vises feature perfectly aligned,

precision ground jaws, large Acme

screws and

easy to read 0°–360° scales.

Figure 53. Precision Milling Vise.

H7527— 6" Rotary Table w/ Div. Plates

Use this 6" rotary table in either the horizontal or vertical position for a variety of milling applications and with the set of dividing plates and adjustable tailstock, your milling applications are nearly unlimited. With 4 degree table movement per handle rotation and 20 second vernier scale, control is very accurate and precise. Also includes

⁄8" clamping set for the 4-slot table. Everything

a you need in one great set!

-42-

Figure 54. H7527 6" Rotary Table w/Div. Plates.

Figure 52. Tilt Table.

Model G0757Z (Mfd. Since 02/15)

Digital Indicators G9806—Dial Indicator 0.05" Range x 0.0001" H3326— Digital Indicator

If your measuring requirements call for supreme accuracy within a short range, this is the Dial Indicator for you. Graduations are 0.0001" (one ten thousandth of an inch) and range is 0.05" (five hundredths of an inch). Fits all dial indicator magnetic bases.

Basic Eye Protection T20501—Face Shield Crown Protector 4" T20502—Face Shield Crown Protector 7" T20503—Face Shield Window T20451—“Kirova” Clear Safety Glasses T20452—“Kirova” Anti-Reflective S. Glasses H7194—Bifocal Safety Glasses 1.5 H7195—Bifocal Safety Glasses 2.0 H7196—Bifocal Safety Glasses 2.5

G9806

Figure 55. Assortment of digital indicators.

H3326

T20502

T20452

T20503

H7194

Figure 56. Assortment of basic eye protection.

T20451

Model G0757Z (Mfd. Since 02/15)

-43-

SECTION 6: MAINTENANCE

accidental startup, always disconnect machine from

Daily, After Operations

• Push the E-STOP button, turn the mas-

To reduce risk of shock or

power before adjustments, maintenance, or service.

ter power switch OFF, and disconnect the machine from power.

• Vacuum/clean all chips and swarf from table, slides, and base.

• Wipe down all unpainted or machined surfaces with a high-quality rust preventative.

Schedule

Regular maintenance will help ensure proper care of the equipment. We strongly recommend that all operators make a habit of following the maintenance procedures found in this section. For optimum performance from this machine, this maintenance schedule must be strictly followed.

Ongoing

To maintain a low risk of injury and proper machine operation, if you ever observe any of the items below, shut the machine down immediately, disconnect it from power, and fix the problem before continuing operations.

• Loose mounting bolts or fasteners.

• Worn, frayed, cracked, or damaged wires.

• E-STOP button not working correctly.

• Worn or loose V-belts (see Page 52).

• Missing or open belt guards/door.

• Coolant not flowing correctly.

• Any other unsafe condition.

Cleaning &

Protecting

Metal chips and other debris left on the machine will invite oxidation and a gummy residue build-up around the moving parts. Use a brush and shop vacuum to remove chips and debris from the working surfaces of the mill. Never blow off the mill with compressed air, as this will force metal chips deep into the mechanisms and may cause injury to yourself or bystanders.

Remove any rust build-up from unpainted cast iron surfaces of your mill and treat them with a non-staining lubricant after cleaning.

Keep unpainted cast iron surfaces rust-free with regular applications of products like G96 Gun Treatment, SLIPIT Figure 57 and the Grizzly catalog or website).

, or Boeshield® T-9 (see

Before Beginning Operations

• Press the E-STOP button on the control panel to prevent high-speed spindle startup when connected to power.

• Make sure the X-axis power feed is turned OFF to prevent unintentional table movement when connected to power.

• Check the coolant reservoir in the base. Fill it or clean it out if necessary (see Page 51).

• Perform all required lubrication tasks (see Page 45).

• Check table movement in all three axes for loose/tight gibs. Adjust the gibs if necessary.

-44-

H3788

Gun

G96 Treatment

Figure 57. Products to clean and protect

unpainted cast iron surfaces.

Model G0757Z (Mfd. Since 02/15)

G2870

Boeshield

T-9

G5563

SLIPIT

Lubrication

The mill has numerous moving metal-to-metal contacts that require regular and proper lubrication to ensure efficient and long-lasting operation.

Other than the lubrication points covered in this section, all other bearings are internally lubricated and sealed at the factory. Simply leave them alone unless they need to be replaced.

DISCONNECT MACHINE FROM POWER before performing any lubrication task!

Important: Before adding lubricant, clean the debris and grime from the device and the immediate area to prevent contamination of the new lubricant.

Use the schedule and information in the chart below as a daily guide for lubrication tasks.

Frequency

Lubrication Task

Ball Oilers 4–8

Vertical Spindle Bearings 4–8

Quill Exterior 4–8

Quill Rack & Pinion 40

Table Leadscrews 40

Ram Ways 40

Z-Axis Bevel Gears 80

X-Axis Power Feed Gears 80

The recommended lubrication schedule is based on light-to-medium usage. Keeping in mind that lubrication helps to protect the value and operation of the mill, these lubrication tasks may need to be performed more frequently depending on usage.

(Hours of Operation)

Page Ref.

Model G0757Z (Mfd. Since 02/15)

-45-

Headstock

Oil Ty p e ......Model T23963 or ISO 32 Equivalent

Oil Amount ...........................................2 .1 Quarts

Lubrication Frequency ........................... Annually

4. Fill headstock with oil to red mark on sight glass (see Figure 59).

The headstock uses ISO 32 machine oil to lubricate the gears, and is equipped with an oil-level sight glass to gauge when the proper amount of oil is in the headstock.

The amount of oil in the headstock must be regularly monitored before each operation to ensure it doesn't drop below sight glass visibility. Headstock oil must be changed on an annual basis to ensure proper lubricity of oil.

Tools Needed Qty

Open-End Wrench 12mm .................................. 1

Hex Wrench 8mm .............................................. 1

Drain Pan (2-Gallon or Larger) .......................... 1

Pump-Type Oil Can with Plastic or Rubber Tip . 1

To change oil in headstock:

1. Remove oil fill plug from top of headstock

(see Figure 58).

Oil-Level

Sight Glass

Red Mark

Figure 59. Red mark on sight glass indicates

headstock oil level is full.

5. Re-install oil fill plug.

6. Discard used oil following federal, state,

and fluid manufacturer guidelines for proper disposal.

Oil Fill Plug

Oil Drain Plug

Figure 58. Headstock oil fill and drain locations.

2. Hold drain pan under drain plug and remove

drain plug. Allow old oil to drain into drain pan.

3. Replace and tighten drain plug.

Do not fill headstock with oil above red mark. This could damage machine and create an overflow of oil.

-46-

Model G0757Z (Mfd. Since 02/15)

Ball Oilers

Oil Ty p e ......Model T23963 or ISO 32 Equivalent

Oil Amount ......................................... 1–2 Pumps

Lubrication Frequency ...... 4–8 Hrs. of Operation

Proper lubrication of ball oilers is done with a pump-type oil can that has a cone tip (see Page 39 for offerings from Grizzly). We do not recommend using metal needle or lance tips, as they can push the ball too far into the oiler, break the spring seat, and lodge the ball in the oil galley.

Push the tip of the oil can nozzle against the ball oiler to create a hydraulic seal, then pump the oil can once or twice. If you see sludge and contaminants coming out of the lubrication area, continue pumping the oil can until the oil runs clear. Move the components through the entire path of travel a few times to distribute the oil. When finished, wipe away the excess oil.

Use Figures 60–64 to locate the 13 ball oilers on the Model G0757Z.

Figure 61. Front saddle and Y-axis handwheel

ball oilers.

Figure 62. Rear saddle ball oilers.

Figure 60. Ball oilers on the side of the knee

and Z-axis crank ball oiler.

Note: There is a single ball oiler duplicated on the opposite side of the knee.

Model G0757Z (Mfd. Since 02/15)

Figure 63. Horizontal spindle ball oiler.

Figure 64. Horizontal spindle arbor support ball

oiler.

-47-

Vertical Spindle Bearings

Oil Ty p e ......Model T23963 or ISO 32 Equivalent

Oil Amount ......................................... 1–2 Pumps

Lubrication Frequency ...... 4–8 Hrs. of Operation

To lubricate vertical spindle bearings:

1. Remove circular cover on right side of head to expose vertical spindle spline (see Figure

65).

Spindle

Spline

Exposed

Quill Exterior

Oil Ty p e ......Model T23962 or ISO 68 Equivalent

Oil Amount ............................................Thin Coat

Lubrication Frequency ...... 4–8 Hrs. of Operation

Fully extend the spindle to expose the quill (see Figure 66), then use an oily shop rag to apply a thin coat of lubricant to the smooth surface of the quill.

Note: If you remove any of the grease from the teeth of the quill rack, replace it as instructed below.

Pinion

Figure 65. Vertical spindle spline exposed for

lubrication.

2. Raise spindle until you can see top of quill.

3. Add 1–2 pumps from an oil can between

spindle spline and top of quill.

4. Replace circular cover and run vertical spindle for a few minutes to distribute oil in bearings.

Rack

Quill Smooth Surface

Figure 66. Quill lubrication points.

Quill Rack & Pinion

Grease Ty p e ......... NLGI#2 Grease or Equivalent

Oil Amount ............................................Thin Coat

Lubrication Frequency .........40 Hrs. of Operation

Fully extend the spindle to expose the quill rack (see Figure 66), then use mineral spirits, shop rags, and a brush to clean the old grease from the teeth of the rack and pinion.

When dry, use a brush to apply a thin coat of grease to the teeth, then move the quill up and down several times to evenly distribute the grease.

-48-

Model G0757Z (Mfd. Since 02/15)

Table Leadscrews

Oil Ty p e ......Model T23962 or ISO 68 Equivalent

Oil Amount ............................................Thin Coat

Lubrication Frequency .........40 Hrs. of Operation

Move the table as necessary to access the entire length of the X-, Y-, and Z-axis leadscrews (see Figures 67–68), then use mineral spirits, shop rags, and a brush to clean them.

X-Axis

Leadscrew

Ram Ways

Oil Ty p e ......Model T23962 or ISO 68 Equivalent

Oil Amount ............................................Thin Coat

Lubrication Frequency .........40 Hrs. of Operation

Move the ram as necessary to gain access to the entire length of the ram dovetail ways (see Figure

69), use mineral spirits and shop rags to clean the ways, then apply a thin coat of lubricant.

Ram Dovetail Ways

Figure 67. X-axis leadscrew

(as viewed underneath the table).

Z-Axis

Y-Axis

Leadscrew

Figure 68. Y- and Z-axis leadscrews

(as viewed underneath the knee).

When dry, use a clean brush to apply a thin coat of oil to the leadscrew threads, then move the table through the X-, Y-, and Z-axis paths to distribute the oil.

Leadscrew

Figure 69. Ram dovetail ways.

Z-Axis Bevel Gears

Grease Ty p e ......... NLGI#2 Grease or Equivalent

Oil Amount ............................................Thin Coat

Lubrication Frequency .........80 Hrs. of Operation

Use mineral spirits, shop rags, and a brush to clean the old grease from the teeth of the bevel gears shown in Figure 70.

Figure 70. Location of Z-axis bevel gears.

Model G0757Z (Mfd. Since 02/15)

When dry, use a brush to apply a thin coat of grease to the teeth, then move the table up and down to evenly distribute the grease.

-49-

X-Axis Power Feed Gears

Grease Ty p e .........T23964 or NLGI#2 Equivalent

Amount .................................................Thin Coat

Add Frequency ....................40 Hrs. of Operation

Tool Needed Qty

Open-End Wrench 19mm .................................. 1

5. Brush a light coat of grease on bevel gear teeth and smaller drive gear.

6. Replace leadscrew alignment key, then align bevel gear keyway with key as you slide gear onto leadscrew and mesh its teeth with drive gear.

To lubricate power feed gears:

1. DISCONNECT MACHINE FROM POWER!

2. Remove hex nut and ball handle from power unit end of the X-axis leadscrew.

3. Unthread and remove knurled retaining ring

and graduated dial ring from end of leadscrew.

4. Remove brass bevel gear from leadscrew, then remove leadscrew alignment key (see Figure 71).

Key

7. Replace graduated dial ring and secure it with knurled retaining ring—do not overtighten.

8. Slide ball handle onto leadscrew, align keyway with leadscrew alignment key, then secure it with hex nut removed in Step 2.

9. Move table with ball handle to check gear movement and distribute grease on gears. If movement is not smooth, repeat Steps 2–8 until it is.

Brass

Bevel Gear

Figure 71. Power feed gears and key.

-50-

Drive

Gear

Model G0757Z (Mfd. Since 02/15)

Adding/Changing

Coolant

Hazards

As some coolant ages, dangerous microbes can proliferate and create a biological hazard. The risk of exposure to this hazard can be greatly reduced by replacing the old coolant on a regular basis, as indicated in the maintenance schedule.

Checking/Adding Coolant

Tools Needed Qty

Hex Wrench 5mm .............................................. 1

Goggles .......................................... 1 Per Person

Gloves ............................................ 1 Per Person

Respirator ....................................... 1 Per Person

New Coolant ............Approx. 2 Gallon (7.5 Liters)

Disposable Shop Rags ...................... As Needed

To check or add coolant:

1. DISCONNECT MACHINE FROM POWER!

The important thing to keep in mind when working with the coolant is to minimize exposure to your skin, eyes, and respiratory system by wearing the proper PPE (personal protective equipment), such as splash-resistant safety glasses, longsleeve gloves, protective clothing, and a NIOSH approved respirator.

BIOLOGICAL & POISON

HAZARD! Use the correct personal protection equipment when handling coolant. Follow federal, state, and fluid manufacturer requirements for proper disposal.

A small amount of coolant is lost during normal operation. Check the coolant reservoir regularly and fill it if necessary. We recommend changing the coolant every three months or sooner if it develops an unpleasant odor. However, be sure to follow the coolant manufacturer's instructions when checking, adding, or changing coolant.

The coolant reservoir holds approximately 2 gallons (7.5 liters) of fluid.

Running coolant pump without adequate coolant in reservoir may permanently damage coolant pump, which will not covered by warranty.

2. Clean away debris and grime from coolant

return screen and surrounding area, then remove screen from base, as shown in Figure 72.

Coolant

Return Screen

Figure 72. Coolant return screen removed.

3. Use a clean metal tool as a dip stick to mea-

sure the level of coolant in reservoir. If lower than 1 screen hole.

4. Re-install return screen before resuming milling operations.

Tip: As an alternate method, leave return

screen in place and use a clean, small instrument through holes in return screen, such as a dip stick. If more coolant is necessary, make sure screen and surrounding area are clean from any containments, then add coolant through screen.

⁄2", add coolant by pouring it into return

Model G0757Z (Mfd. Since 02/15)

-51-

Changing Coolant

Tools Needed Qty

Hex Wrench 5mm .............................................. 1

Catch Pan .......................................................... 1

Empty Bucket 5-Gal. ......................................... 1

Rubber Hose (optional) ..................................... 1

Goggles .......................................... 1 Per Person

Gloves ............................................ 1 Per Person

Respirator ....................................... 1 Per Person

New Coolant ..........Approx. 2 Gallons (7.5 Liters)

Disposable Shop Rags ...................... As Needed

To change coolant:

V-Belt Service

During the first 16 hours of use, the V-belts may stretch slightly and seat into the pulleys. It is im portant to check and adjust them to compensate for this initial wear. Check the tension thereafter on a regular basis. If belts become excessively worn or damaged, replace them.

All V-belts can be replaced by releasing the tension and rolling them off the pulleys, then rolling the new belts back onto the pulleys.

1. Put on personal protective equipment.

2. Place catch pan on table, position coolant

nozzle into pan, then use coolant pump to drain reservoir.

Note: When catch pan is near full, empty it

into a 5 gallon bucket, then repeat process until reservoir is empty.

Tip: Alternately, slide a rubber hose onto

coolant nozzle and point it 5 gallon bucket.

3. DISCONNECT MACHINE FROM POWER!

4. Clean away debris from coolant return screen

and surrounding area, then remove screen from base.

5. Thoroughly clean out reservoir. Make sure interior is dry before adding new coolant.

Note: Use a shop vacuum and a cleaning

solution that is compatible with type of coolant. For instance, if you are using a waterbase coolant, then use a water-base cleaning solvent. Also, use magnets to remove any metal chips left behind.

Tensioning Lower Horizontal Spindle V-Belts

Tools Needed Qty

Open-End Wrench 24mm .................................. 1

Dead Blow Hammer .......................................... 1

Hex Wrench 8mm .............................................. 1

To tension lower horizontal spindle V-belts:

1. DISCONNECT MACHINE FROM POWER!

2. Open column rear cover to gain access to

horizontal spindle V-belts and pulleys, as shown in Figure 73.

Upper

V-Belts

Lower

V-Belts

Hex Nut

Behind Bracket

6. When reservoir is clean and dry, fill reservoir with new coolant through hole in the base left by return screen.

Tip: Place a couple of magnets inside res-

ervoir under return screen to collect metal particles and keep them out of coolant pump.

7. Re-install return screen before resuming milling operations.

-52-

Tension

Thumbwheel

Lower Idler Pulley

Figure 73. Horizontal spindle V-belts and pulleys

(cover removed for photo clarity).

Model G0757Z (Mfd. Since 02/15)

3. Loosen tension thumbwheel and hex nut behind lower idler pulley bracket.

Note: In next step, you may have to bump

lower idler pulley with dead blow hammer to get it to move.

Tensioning Upper Horizontal Spindle V-Belts

Tools Needed Qty

Hex Wrench 6mm .............................................. 1

Open-End Wrench 14mm .................................. 1

4. Apply pressure on lower idler pulley to the left as you tighten tension thumbwheel.

Note: There is proper V-belt tension when

approximately

⁄4" –1⁄2" deflection is achieved (see Figure 74) by applying moderate pressure midway between pulleys.

⁄4"–1⁄2"

Pulley

Deflection

Pulley

Figure 74. Checking V-belt tension.

5. Retighten hex nut behind center pul-

ley bracket.

6. Close and rear column cover.

To tension upper horizontal spindle V-belts:

1. DISCONNECT MACHINE FROM POWER!

2. Open horizontal column rear cover to gain

access to horizontal spindle V-belts and pulleys.

3. Loosen hex nut on center cap screw shown in Figure 75, then rotate cap screw clockwise to

increase tension in upper V-belts.

Note: There is proper V-belt tension when

approximately

⁄4" –1⁄2" deflection is achieved (see Figure 74 on previous page) by applying moderate pressure midway between pulleys.

Upper V-Belts

Center

Cap Screw

& Hex Nut

Model G0757Z (Mfd. Since 02/15)

Figure 75. Upper horizontal V-belt tensioning

cap screw.

4. Retighten hex nut and secure column rear cover.

-53-

Machine Storage

Bringing Mill Out of Storage

1. Re-tension V-Belts (refer to Page 52) if you

loosened them for storage purposes.

The machine must be properly prepared if it will be stored for any period of time. Doing this will help prevent the development of rust and corrosion and ensure the mill remains in good condition for later use.

Note: When taking the machine out of storage, repeat the Test Run and the Spindle Break-In.

Preparing Mill for Storage

1. DISCONNECT MACHINE FROM POWER!

2. Lubricate machine as directed in Lubrication on Page 46.

3. Clean out coolant reservoir as directed in Changing Coolant on Page 51.

4. Thoroughly clean all unpainted, bare metal

surfaces, then coat them with quality rust preventative. Take care to ensure these surfaces are completely covered but rust preventative is kept off painted surfaces.

2. Remove moisture-absorbing desiccant packs from the electrical box.

3. Repeat Test Run and Spindle Break-In procedures, beginning on Page 23.

4. Add coolant, as described in Adding/ Changing Coolant on Page 51.

Note: If the machine will be out of service

for only a short period of time, use way oil in place of rust preventative.

5. Loosen belts to prevent them from stretching during storage. Post a reminder on machine that belts need to be re-installed or tensioned before resuming operations.

6. Place a few moisture-absorbing desiccant packs inside electrical cabinet.

7. Cover and place machine in a dry area that is out of direct sunlight and away from hazardous fumes, paint, solvents, or gas. Fumes and sunlight can bleach or discolor paint and plastic parts.

-54-

Model G0757Z (Mfd. Since 02/15)

Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support.

the serial number and manufacture date of your machine before calling.

SECTION 7: SERVICE

Troubleshooting

Motor & Electrical

Symptom Possible Cause Possible Solution

Machine does not start or a breaker trips.

Machine stalls or is underpowered.

1. Emergency stop button depressed/at fault.

2. Plug/receptacle at fault/wired wrong.

3. Incorrect power supply voltage or circuit size.

4. Column cover interlock safety switch is engaged.

5. Blown machine fuse.

6. Power supply circuit breaker tripped or fuse blown.

7. Motor wires connected incorrectly.

8. Wiring open/has high resistance.

9. Start capacitor at fault (horizontal motor only).

10. Potentiometer/variable-speed dial controller at fault.

11. Contactor not energized/has poor contacts.

12. Inverter/control box at fault.

13. Motor at fault.

1. Machine undersized for task.

2. Feed rate/cutting speed too fast.

3. Wrong workpiece material.

4. Belt(s) slipping.

5. Oil/grease on belt(s).

6. Motor wired incorrectly.

7. Gearbox at fault.

8. Motor overheated.

9. Run capacitor at fault (horizontal motor only).

10. Pulley/sprocket slipping on shaft.

11. Contactor not energized/has poor contacts.

1. Rotate button head to reset. Replace.

2. Test for good contacts; correct the wiring.

3. Ensure correct power supply voltage and circuit size.

4. Re-adjust component to disengage column cover interlock safety switch.

5. Replace fuse/ensure no shorts.

6. Ensure circuit is sized correctly and free of shorts. Reset circuit breaker or replace fuse.

7. Correct motor wiring connections.

8. Check/ﬁx broken, disconnected, or corroded wires.

9. Test/replace.

10. Test/replace.

11. Test all legs for power/replace.

12. Inspect inverter/controller box; replace.

13. Test/repair/replace.

1. Use correct cutter/bit; reduce feed rate; reduce spindle RPM; use coolant if possible.

2. Decrease feed rate/cutting speed.

3. Use correct type/size of metal.

4. Tension/replace belt(s); ensure pulleys are aligned.

5. Clean belt(s).

6. Wire motor correctly.

7. Select appropriate gear ratio; replace broken or slipping gears.

8. Clean motor, let cool, and reduce workload.

9. Test/repair/replace.

10. Replace loose pulley/shaft.

11. Test all legs for power/replace.

Note: Please gather

Model G0757Z (Mfd. Since 02/15)

-55-

Symptom Possible Cause Possible Solution

Machine has vibration or noisy operation.

1. Workpiece loose.

2. Chuck or cutter at fault.

3. Motor or component loose.

4. V-belt(s) worn or loose.

5. Motor fan rubbing on fan cover.

6. Motor mount loose/broken.

7. Pulley loose.

8. Machine incorrectly mounted.

9. Belts slapping cover.

10. Centrifugal switch is at fault (horizontal motor only).

11. Motor bearings at fault.

1. Use the correct holding ﬁxture and reclamp workpiece.

2. Replace unbalanced chuck; replace/resharpen cutter; use correct feed rate.

3. Inspect/replace damaged bolts/nuts, and retighten with thread locking ﬂuid.

4. Inspect/replace belts with a new matched set.

5. Fix/replace fan cover; replace loose/damaged fan.

6. Tighten/replace.

7. Re-align/replace shaft, pulley set screw, and key.

8. Tighten mounting bolts; relocate/shim machine.

9. Replace/realign belts with a matched set.

10. Replace.

11. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement.

Mill Operations

Symptom Possible Cause Possible Solution

Tool loose in spindle.

Breaking tools or cutters.

Workpiece or tool vibrates or chatters during operation.

Table is hard to move.

Headstock is hard to raise.

1. Tool is not fully drawn up into spindle taper.

2. Taking too big of a cut.

3. Debris on tool or in spindle taper.

1. Spindle speed/feed rate is too fast.

2. Cutting tool is too small.

3. Cutting tool getting too hot.

4. Taking too big of a cut.

5. Spindle extended too far down.

1. Table locks not tight.

2. Workpiece not secure.

3. Spindle speed/feed rate is too fast.

4. Spindle extended too far down.

5. Quill lock not tight.

6. Gibs too loose in table.

1. Table locks are tightened down.

2. Chips have loaded up on ways.

3. Ways are dry and need lubrication.

4. Table limit stops are interfering.

5. Gibs are too tight.

1. Headstock lock(s) or gib is at fault.

2. Headstock leadscrew is binding.

3. Gib is too tight.

1. Tighten drawbar.

2. Lessen depth of cut and allow chips to clear.

3. Clean tool and spindle taper.

1. Set spindle speed correctly or use slower feed rate.

2. Use larger cutting tool and slower feed rate.

3. Use coolant or oil for appropriate application.

4. Lessen depth of cut and allow chips to clear.

5. Fully retract spindle and lower headstock. This increases rigidity.

1. Tighten table locks (Page 28).

2. Properly clamp workpiece on table or in vise.

3. Set spindle speed correctly or use slower feed rate (Page 35).

4. Fully retract spindle and lower headstock. This increases rigidity.

5. Tighten quill lock (Page 37).

6. Tighten gibs.

1. Make sure table locks are fully released.

2. Frequently clean away chips that load up during operations.

3. Lubricate ways.

4. Check to make sure that all table limit stops are not in the way.

5. Adjust gibs (Page 61).

1. Loosen/replace lock lever and adjust gib.

2. Clean and relubricate headstock leadscrew and gears.

3. Adjust gib (Page 61).

-56-

Model G0757Z (Mfd. Since 02/15)

Symptom Possible Cause Possible Solution

Bad surface ﬁnish. 1. Spindle speed/feed rate is too fast.

2. Workpiece not secure.

3. Spindle extended too far down.

4. Dull or incorrect cutting tool.

5. Wrong rotation direction of cutting tool.

Cutting results not square.

Spindle overheats. 1. Poor spindle bearing lubrication.

Lack of power at spindle.

Spindle does not return to highest position.

Control Panel FORWARD and REVERSE buttons do not work.

Power feed does not move table or is slipping.

Operates at high speed only or is inconsistent.

Lamp will not light. 2. Power not turned on.

DRO doesn't give reading.

DRO reading is incorrect.

1. Table and spindle are not at 90° to each other.

2. Table travel is inconsistent.

2. Spindle bearings too tight.

3. Mill operated at high speeds for extended period.

1. V-belts are loose.

2. Wrong voltage.

1. Poorly adjusted return spring.

2. Worn return spring.

1. Shorted/disconnected wiring. 1. Inspect circuit boards, wiring connections. Replace/

1. Table locked.

2. Drive selector not engaged.

3. Sheared pin.

4. Gears not meshing or teeth missing.

5. Motor shaft and gear shaft not engaged.

1. Rapid micro switch is stuck.

2. Variable-speed dial doesn't work properly.

3. Wiring harness disconnected.

3. Bulb is burned out.

1. Short in wiring or wired incorrectly.

1. DRO is not turned on.

2. Batteries are dead.

3. Shorted/disconnected wiring/plugs.

1. Initial reading is incorrect.

2. Sensor has gone bad.

3. Spacing between sensor and scale is incorrect.

1. Set spindle speed correctly or use slower feed rate (Page 35).

2. Properly clamp workpiece on table or in vise.

3. Fully retract spindle and lower headstock. This increases rigidity.

4. Sharpen cutting tool or select one that better suits the operation.

5. Check for proper cutting tool rotation direction.

1. Tram the spindle (Page 58).

2. Adjust gibs (Page 61).

1. Lubricate spindle bearings.

2. Properly adjust spindle bearing preload.

3. Allow mill to cool.

1. Properly tension V-belts (Page 52).

2. Correct voltage.

1. Increase return spring tension.

2. Replace return spring.

repair as necessary.

1. Unlock table locks (Page 28).

2. Select speed, engage drive selector.

3. Replace pin.

4. Check gears and adjust/replace.

5. Replace clutch.

1. Lightly tap on it to lower it.

2. Test/Repair/Replace.

3. Reconnect wiring harness.

2. Press switch/button on lamp or control panel.

3. Replace bulb.

1. Trace and test wiring. Fix any errors.

1. Switch DRO ON/Power button.

2. Change batteries.

3. Inspect circuit boards, sensors, plugs, and wiring connections. Replace/repair as necessary.

1. Tare/Zero/Reset DRO at beginning point.

2. Test/replace sensor as necessary.

3. Adjust spacing between sensor and scale.

Model G0757Z (Mfd. Since 02/15)

-57-

Tramming Mill Head

After positioning the head at an angle and when your operation requires that the spindle axis be precisely perpendicular to the table, you must tram or align the spindle with the table to ensure the spindle is exactly 90° to the table.

Note: A precision-ground plate can be substituted for the parallel blocks. Keep in mind that the farther the indicator point can be placed from the spindle axis, the more accurate the alignment measurements will be.

To tram spindle to mill head:

1. DISCONNECT MACHINE FROM POWER!

This procedure involves mounting a dial test indicator to the quill or spindle, rotating it around the table, and adjusting the spindle axis (Z-axis) 90° to the table X- and Y-axes, as illustrated in Figure 76.

Spindle

Z-Axis

Y-Axis

Figure 76. Spindle Z-axis perpendicular to the

table X- and Y-axis.

90º

X-Axis

Table

2. Prepare the mill for tramming by performing following tasks:

• Verify the table is clean by running your

hand over the top of it. If necessary, stone the table to remove all nicks and burrs, then clean off all debris.

• Position the table for the milling operation

you intend to perform after tramming— preferably centered with the saddle.

• Tighten any table, knee, quill, or ram locks

that should be tight during the intended milling operation.

3. Place parallel block underneath spindle.

4. Install indicator holder in spindle or on quill,

then mount indicator so that point is as parallel to the block as possible (see illustration in Figure 77).

We encourage you to research the many variations of spindle tramming to find the one that works best for you. If you do not already have a preference for performing this operation, use the following widely-used procedure for accurately tramming the spindle to the table.

Keep in mind that all workpiece top surfaces are not exactly parallel with the table top. You may choose to tram the spindle to the top surface of the workpiece after it is mounted instead of that of the table.

Tools Needed Qty

Dial Test Indicator

(with at least 0.0005" resolution) ................ 1

Indicator Holder

(mounted on the quill/spindle) .................... 1

Precision Parallel Block

(at least 9" in length) ................................... 1

-58-

Indicator Holder

Dial Test Indicator

Parallel Block

Table

Figure 77. Dial test indicator mounted.

Model G0757Z (Mfd. Since 02/15)

Spindle

5. To measure spindle alignment along X-axis, place parallel block directly under spindle and indicator across length of table, as illustrated in Figure 78.

Note: If you must re-position quill or knee to

accommodate above step, then review the tasks in Step 2 to make sure the mill is properly prepared for tramming.

Table (Top View)

Parallel Block

Indicator

Figure 78. Parallel block and indicator positioned

for the X-axis measurement

(top view).

Spindle

7. Rotate spindle so that indicator point rests in same manner on other end of block, then read dial.

— If indicator dial still reads zero or is within

the acceptable variance, continue on with Step 8.

— If indicator dial has moved from zero

beyond acceptable variance, you will need to compensate for that amount by rotating head left or right. Repeat Steps 6–7 until you are satisfied with the spindle axis alignment along table X-axis.

Note: Keep one of the rotation lock bolts

just snug so the head does not move loosely while you adjust it. Remember to tighten all the rotation lock bolts after adjusting the head.

8. Place parallel block directly under spindle and across width of table, as illustrated in Figure 79.

Table (Top View)

Note: Your general goal in the next steps

should be to get the difference of the indicator readings between the ends of the parallel bar down to 0.0005". However, the acceptable variance will depend on the requirements for your operation.

6. Rotate spindle by hand so that indicator point rests on one end of parallel block, as illustrated in Figures 77–78, then zero dial.

Indicator

Spindle

Parallel Block

Figure 79. Parallel block and indicator positioned

for the Y-axis measurement

(top view).

Model G0757Z (Mfd. Since 02/15)

-59-

9. Rotate spindle so indicator point rests on parallel block, as illustrated in Figure 79, then zero dial.

10. Rotate spindle so that indicator point rests on other end of block in same manner, then read dial.

— If indicator dial still reads zero or is within

the acceptable variance, the spindle is precisely perpendicular to table in both X- and Y-axes, and tramming procedure is complete.

— If indicator dial has moved from zero

beyond acceptable variance, you will need to compensate for that amount by tilting head forward or backward. Repeat Steps 9–10 until you are satisfied with spindle axis alignment along table Y-axis.

Note: Keep one of the tilt lock bolts just snug

so the head does not move loosely while you adjust it. Remember to tighten all the tilt lock bolts after adjusting the head.

Adjusting Leadscrew

Backlash

Leadscrew backlash is the amount of free play movement in the leadscrew (when the leadscrew moves but the table does not) after changing the direction of rotation.

A leadscrew must have a certain amount of backlash to rotate easily, but over time, it increases with wear. Generally, 0.005"–0.010" leadscrew backlash is acceptable to ensure smooth movement and reduce the risk of premature thread wear.

The X-axis leadscrew backlash is adjusted using a long 4mm hex wrench to tighten/loosen the cap screws on the leadscrew nut. This adjusts the force the leadscrew nut exerts on the leadscrew threads.

The X-axis leadscrew nut shown in Figure 80 is accessed from underneath the right side of the table.

X-Axis Leadscrew Nut

Cap Screws

Figure 80. Location of X-axis leadscrew nut cap

screws for adjusting backlash.

-60-

Model G0757Z (Mfd. Since 02/15)

Adjusting Gibs

Gibs are tapered lengths of metal that are sandwiched between two moving surfaces. Gibs control the gap between these surfaces and how they slide past one another. Correctly adjusting the gibs is critical to producing good results.

Correctly positioning gibs is a matter of trial and error and patience. Tight gibs make table movement more accurate but stiff. Loose gibs make table movement sloppy but easier to do. The goal of gib adjustment is to remove unnecessary sloppiness without causing the ways to bind.

The Z-axis gib has only one adjustment screw on the top of the gib (see Figure 82). The screw moves the gib up and down. Other than this difference, use the same method of adjustment as with the other gibs.

Note: Remove the way cover behind the table to gain access to the Z-axis gib adjustment screw.

Many experienced machinists adjust the gibs just to the point where they can feel a slight drag in table movement.

Screws on each end of the gib allow gib adjustment to increase or decrease the friction between the sliding surfaces.

DISCONNECT MACHINE FROM POWER BEFORE ADJUSTING THE GIBS!

Make sure all table locks are loose. For the X- and Y-axis gibs, loosen one gib adjustment screw (see Figure 81) and tighten the opposite screw the same amount to move the gib, while at the same time rotating the handwheel to move the table until you feel a slight drag in that path of movement.

Note: Remove the way cover behind the table to gain access to the rear Y-axis gib adjustment screw.

Z-Axis

Gib Screw

Figure 82. Location of Z-axis gib adjustment

screw.

X-Axis Gib Screw

(1 of 2)

Y-Axis Gib Screw

(1 of 2)

Figure 81. Locations of X- and Y-axis gib

adjustment screws.

Model G0757Z (Mfd. Since 02/15)

-61-

These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one

number and manufacture date of your

machine before calling. This information can be found on the main machine label.

machine

SECTION 8: WIRING

stated in this manual, and study this section carefully.

If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated wiring diagram may be available. Note: Please gather the serial

Wiring Safety Instructions

SHOCK HAZARD. Working on wiring that is con-

nected to a power source is extremely dangerous. Touching electrified parts will result in personal injury including but not limited to severe burns, electrocution, or death. Disconnect the power from the machine before servicing electrical components!

MODIFICATIONS. Modifying the wiring beyond what is shown in the diagram may lead to unpredictable results, including serious injury or fire. This includes the installation of unapproved aftermarket parts.

WIRE CONNECTIONS. All connections must be tight to prevent wires from loosening during machine operation. Double-check all wires disconnected or connected during any wiring task to ensure tight connections.

CIRCUIT REQUIREMENTS. You MUST follow the requirements at the beginning of this manual when connecting your machine to a power source.

WIRE/COMPONENT DAMAGE. Damaged wires or components increase the risk of serious personal injury, fire, or machine damage. If you notice that any wires or components are damaged while performing a wiring task, replace those wires or components.

MOTOR WIRING. The motor wiring shown in these diagrams is current at the time of printing but may not match your machine. If you find this to be the case, use the wiring diagram inside the motor junction box.

CAPACITORS/INVERTERS. Some capacitors and power inverters store an electrical charge for up to 10 minutes after being disconnected from the power source. To reduce the risk of being shocked, wait at least this long before working on capacitors.

EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information included in this section, contact our Technical Support at (570) 546-9663.

The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com.

-62-

Model G0757Z (Mfd. Since 02/15)

Ground

Wiring Overview

Rear Column

Limit Switch

LongJing LXW511Q1

RPM Sensor

Control Panel

Page 66

DRO

Page 68

X-Axis Power Feed

ASONG AS-235

COM

Electrical Panel

Page 64

Hot

220

VAC

Hot

Vertical Spindle Motor

Page 67

Horizontal Spindle

Motor Page 67

Coolant Pump

Page 68

6-15 Plug

(As Recommended)

Work

Lamp

DRO

Electrical

Panel

Coolant

Pump

Component Location

RPM Sensor

Vertical Spindle

Motor

Control

Rear Column Cover

Horizontal

Spindle Motor

(Inside)

Panel

Limit Switch

X-Axis

Power Feed

Model G0757Z (Mfd. Since 02/15)

READ ELECTRICAL SAFETY

ON PAGE 62!

-63-

Electrical Panel Wiring Diagram

To RPM sensor

Page 63

PE 0 220 230 380 400

Transformer

JBK5-160VA

Variable Frequency Drive

DELTA VFD-E

0 27

MI5

DCM

MI6

DCM

VT2W

MI4

MI2

MI1

MI3

GND

1L1

13NO 21NC 31NC 43NO

14NO 22NC 32NC 44NO

2T1 4T2 6T3

3L2 5L3

KM1 Contactor

Siemens 3TB41 24V

22E 22E 22E 22E

DCM

11 9

1L1

3L2 5L3

13NO 21NC 31NC 43NO

KM2 Contactor

Siemens 3TB41 24V

14NO 22NC 32NC 44NO

2T1 4T2 6T3

DCM

1L1

13NO 21NC 31NC 43NO

14NO 22NC 32NC 44NO

2T1 4T2 6T3

KM3 Contactor

Siemens 3TB41 24V

3L2 5L3

1L1

13NO 21NC 31NC 43NO

14NO 22NC 32NC 44NO

2T1 4T2 6T3

AFM

MCM

ACM

AVI

24V

ACM

B1+B2

3L2 5L3

KM4 Contactor

Siemens 3TB41 24V

22E

ACI

MO1

10V

AVI

L N

1/L1

21 22 13 14

20-25A

NS2-25

CHINT

RCRA

2/T1 4/T2 6/T3

10V

GND

1L1

3L2 5L3

13NO 21NC 31NC 43NO

KM5 Contactor

Siemens 3TB41 24V

14NO 22NC 32NC 44NO

2T1 4T2 6T3

3/L2

5/L3

OFF

Test

OL Relay

L2 L2

QF1

1L1

3L2 5L3

13NO 21NC 31NC 43NO

KA Contactor

Siemens 3TB41 24V

22E

14NO 22NC 32NC 44NO

2T1 4T2 6T3

Circuit Breaker DZ47-60 C2

OFF

QF2

Master Power Switch

LW26-25

CanSen

To Vertical

Spindle Motor

Page 67

-64-

5 7

PEPEPE

62 84

To Power

Connection

Page 63

To Column

Limit Switch

Page 63

To X-Axis

Power Feed

Page 63

READ ELECTRICAL SAFETY

ON PAGE 62!

4 5 778

9 11 13 14 16

9 11 13 14

7 8

Horizontal

Spindle Motor

Page 67

To Master

Control Panel

Page 66

N3N3 N2

L3L3

Work Lamp

Page 63

DRO

Page 63

Coolant Pump

Page 68

Model G0757Z (Mfd. Since 02/15)

Electrical Panel Wiring

Model G0757Z (Mfd. Since 02/15)

Figure 83. Electrical panel wiring.

READ ELECTRICAL SAFETY

ON PAGE 62!

-65-

Control Panel Wiring

Electrical Panel

Page 64

STOP (Vertical) REVERSE (Vertical)

Minger

LA125H-BE102C

STOP (Horizontal)

Minger

LA125H-BE102C

Pump Switch

Minger

LA125H-BE101C

Master Control Panel

(Viewed from Behind)

REVERSE (Horizontal)

3 4

EMERGENCY OFF

Minger

LA125H-BE101C

Minger

LA125H-BE101C

3 4

Minger

LA125H-BE102C

Switch

GND

FORWARD (Vertical)

Minger

LA125H-BE101C

3 4

FORWARD (Horizontal)

Minger

LA125H-BE101C

POWER Light

3 4

Minger

LA125J-11

D206A

Ground

RPM READOUT DISPLAY

Variable-Speed Dial

(Viewed from Above)

(Potentiometer)

XINGHUO WXD3 4K7

Electrical Panel

Page 64

+5V

RPM Readout Power Supply (Viewed from Above)

-66-

Figure 84. Control panel wiring.

READ ELECTRICAL SAFETY

ON PAGE 62!

Model G0757Z (Mfd. Since 02/15)

220V Motor

Ground

Start Capacitor 150 MFD

250 VAC

Run

Capacitor

20 MFD

450 VAC

Vertical Spindle Motor Wiring

220V Motor Fan

220V Motor

Ground

Figure 85. Vertical spindle motor wiring.

Electrical Panel

Page 64

Horizontal Spindle Motor Wiring

Electrical Panel

Page 64

Model G0757Z (Mfd. Since 02/15)

Figure 86. Horizontal spindle motor wiring.

READ ELECTRICAL SAFETY

ON PAGE 62!

-67-

Electrical Panel

Page 64

Coolant Pump Wiring

Coolant Pump

CBB61

Run Capacitor

5MFD

450VAC

Gnd

Figure 87. Coolant pump wiring.

Electrical Panel

Page 64

(Viewed from Behind)

X-Axis Scale 650mm

Y-Axis Scale 300mm

Z-Axis Scale 500mm

DRO Wiring

DRO

Figure 88. DRO wiring.

-68-

READ ELECTRICAL SAFETY

ON PAGE 62!

Model G0757Z (Mfd. Since 02/15)

SECTION 9: PARTS

We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability.

Column

94-5

30 31

94-1

94-4

94-3

94-2

Model G0757Z (Mfd. Since 02/15)

-69-

Column Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

1 P0757Z001 BASE 51 P0757Z051 KNEE 2 P0757Z002 COLUMN 52 P0757Z052 SPLASH PAN 3 P0757Z003 Z-AXIS LEADSCREW HOUSING 53 P0757Z053 CAP SCREW M6-1 X 12 4 P0757Z004 LOCK WASHER 10MM 54 P0757Z054 Z-AXIS LEADSCREW 5 P0757Z005 HEX BOLT M10-1.5 X 45 55 P0757Z055 SPANNER NUT M16-1.5 6 P0757Z006 COOLANT DRAIN SCREEN 56 P0757Z056 BEVEL GEAR 25T 7 P0757Z007 PHLP HD SCR M6-1 X 12 57 P0757Z057 KEY 6 X 6 X 12 8 P0757Z008 HEX BOLT M16-2 X 65 58 P0757Z058 SPACER 9 P0757Z009 LOCK WASHER 16MM 59 P0757Z059 BEARING SEAT 10 P0757Z010 Z-AXIS LEADSCREW COLLAR 60 P0757Z060 THRUST BEARING 51105 11 P0757Z011 CAP SCREW M8-1.25 X 25 61 P0757Z061 Z-AXIS LEADSCREW NUT 42 X 60MM 12 P0757Z012 TURRET BASE 62 P0757Z062 SET SCREW M8-1.25 X 20 13 P0757Z013 CAP SCREW M12-1.75 X 30 63 P0757Z063 BEVEL GEAR 25T 14 P0757Z014 TURRET 64 P0757Z064 SET SCREW M6-1 X 10 15 P0757Z015 GEAR SHAFT 15T 65 P0757Z065 THRUST BEARING 51103 16 P0757Z016 SHAFT COLLAR 66 P0757Z066 BEARING SEAT 17 P0757Z017 ADJUSTABLE HANDLE M10-1.5 X 25 67 P0757Z067 KEY 5 X 5 X 20 18 P0757Z018 LOCK PLUNGER 68 P0757Z068 Z-AXIS CRANK SHAFT 19 P0757Z019 RAM GIB 69 P0757Z069 SHAFT BRACKET 20 P0757Z020 FLAT HD SCR M8-1.25 X 40 71 P0757Z071 Z-AXIS GRADUATED DIAL 21 P0757Z021 RAM 72 P0757Z072 THUMB SCREW M6-1 X 10 22 P0757Z022 RAM END COVER 73 P0757Z073 CRANK BRACKET 23 P0757Z023 PHLP HD SCR M6-1 X 10 74 P0757Z074 SET SCREW M8-1.25 X 16 24 P0757Z024 RAM TOP COVER 75 P0757Z075 Z-AXIS CRANK 26 P0757Z026 HEADSTOCK MOUNT 76 P0757Z076 CRANK HANDLE 27 P0757Z027 CAP SCREW M16-2 X 50 77 P0757Z077 HANDLE STEP SCREW M10-1.5 X 15 28 P0757Z028 SET SCREW M8-1.25 X 20 78 P0757Z078 FLANGE BOLT M10-1.5 X 16 29 P0757Z029 THRUST BEARING 51101 79 P0757Z079 COLUMN REAR COVER 30 P0757Z030 WORM GEAR 80 P0757Z080 FLAT HD SCR M5-.8 X 12 31 P0757Z031 THRUST BEARING 51102 81 P0757Z081 HORIZONTAL ARBOR SUPPORT 32 P0757Z032 KEY 4 X 4 X 20 83 P0757Z083 BUSHING (BRASS) 33 P0757Z033 WORM SHAFT 85 P0757Z085 CLAMP BOLT M16-2 X 218 34 P0757Z034 T-BOLT M16-2 X 60 88 P0757Z088 HALOGEN WORK LIGHT ASSEMBLY 35 P0757Z035 LOCK WASHER 16MM 89 P0757Z089 HALOGEN BULB 24W BI-PIN 36 P0757Z036 HEX NUT M16-2 90 P0757Z090 COOLANT NOZZLE ASSEMBLY 37 P0757Z037 T-BOLT M16-2 X 50 91 P0757Z091 COOLANT HOSE 1/2" X 36" 38 P0757Z038 FLAT WASHER 16MM 92 P0757Z092 COOLANT HOSE CLAMP 3/4" 39 P0757Z039 HEX NUT M16-2 93 P0757Z093 LIMIT SWITCH CHINT XBLXW-W11Q1 40 P0757Z040 COOLANT PUMP 40W 220V 1-PH 94 P0757Z094 X/Y/Z-AXIS DRO SET 41 P0757Z041 CAP SCREW M5-.8 X 12 94-1 P0757Z094-1 DRO DISPLAY ASSEMBLY 42 P0757Z042 COOLANT PUMP COVER 94-2 P0757Z094-2 X-AXIS DRO SCALE 44 P0757Z044 SLEEVE 94-3 P0757Z094-3 Y-AXIS DRO SCALE 45 P0757Z045 CAP SCREW M6-1 X 18 94-4 P0757Z094-4 Z-AXIS DRO SCALE 46 P0757Z046 Z-AXIS GIB 94-5 P0757Z094-5 DRO POWER CORD 3W 18G 47 P0757Z047 BALL OILER 8MM PRESS-IN 95 P0757Z095 CONTROL PANEL BOX W/SWING ARM 48 P0757Z048 LOWER WAY COVER 96 P0757Z096 BUTTON HD CAP SCR M4-.7 X 6 49 P0757Z049 UPPER WAY COVER 97 P0757Z097 CAP SCREW M8-1.25 X 20 50 P0757Z050 CAP SCREW M6-1 X 25 98 P0757Z098 LIMIT SWITCH CORD 2W 18G

99 P0757Z099 LAMP CORD 2W 18G

-70 -

Model G0757Z (Mfd. Since 02/15)

Table

104

105

101

102

105

103

106

139

104

103

141

108

110

138

107

111

126

137

136

112

135

109

113

127

115

147

166

114

146

111

167

116

169

168

113

151

165

162 161

164

117

163

150

159160

118

149

162

167

109

124

163

165

168

126

120

164

169

116

157

166

125

156

122

121

123

107

154

171

158

106

108

102

155

153

105

104

103

101

102

103

145

144

143

110

142

112

111

113

133

134

128

113

132

126

131

137

170

139

138

129

130

Model G0757Z (Mfd. Since 02/15)

-71-

Table Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

101 P0757Z101 HANDLE STEP SCREW M8-1.25 X 12 136 P0757Z136 PHLP HD SCR M5-.8 X 10 102 P0757Z102 HANDWHEEL HANDLE 137 P0757Z137 BALL OILER 8MM PRESS-IN 103 P0757Z103 HEX NUT M12-1.75 138 P0757Z138 LOCK PLUNGER 104 P0757Z104 LOCK WASHER 12MM 139 P0757Z139 ADJUSTABLE HANDLE M10-1.5 X 25 105 P0757Z105 HANDWHEEL 141 P0757Z141 FLAT WASHER 12MM 106 P0757Z106 BUSHING 142 P0757Z142 T-BOLT M12-1.75 X 42 107 P0757Z107 SPRING PLATE 143 P0757Z143 SADDLE WAY WIPER 108 P0757Z108 CLUTCH 144 P0757Z144 WAY WIPER PLATE 109 P0757Z109 KEY 5 X 5 X 20 145 P0757Z145 PHLP HD SCR M5-.8 X 12 110 P0757Z110 GRADUATED DIAL (LH) 146 P0757Z146 T-NUT M6-1 111 P0757Z111 CAP SCREW M6-1 X 16 147 P0757Z147 SLEEVE 112 P0757Z112 BUSHING 149 P0757Z149 TABLE PIVOT PIN 113 P0757Z113 THRUST BEARING 51103 150 P0757Z150 FLAT WASHER 6MM 114 P0757Z114 X-AXIS LEADSCREW BRACKET 151 P0757Z151 CAP SCREW M6-1 X 30 115 P0757Z115 CAP SCREW M8-1.25 X 25 153 P0757Z153 COOLANT HOSE CONNECTOR 1/2" NPT 116 P0757Z116 DOWEL PIN 6 X 25 154 P0757Z154 COOLANT HOSE CLAMP 3/4" 117 P0757Z117 X-AXIS LEADSCREW NUT 155 P0757Z155 COOLANT HOSE 1/2" X 36" 118 P0757Z118 X-AXIS LEADSCREW 156 P0757Z156 POWER FEED BEARING BRACKET 120 P0757Z120 TABLE 157 P0757Z157 POWER FEED BEVEL GEAR 121 P0757Z121 POWER FEED ASONG AS-235 158 P0757Z158 BEVEL GEAR NUT 122 P0757Z122 CAP SCREW M10-1.5 X 25 159 P0757Z159 LONGITUDINAL LIMIT SWITCH ASSEMBLY 123 P0757Z123 X-AXIS GRADUATED DIAL (RH) 160 P0757Z160 FLAT WASHER 8MM 124 P0757Z124 ROTARY TABLE BASE 161 P0757Z161 CAP SCREW M8-1.25 X 20 125 P0757Z125 X-AXIS GIB 162 P0757Z162 TRAVEL STOP SHAFT 126 P0757Z126 GIB SCREW M8-1.25 163 P0757Z163 COMPRESSION SPRING 127 P0757Z127 SADDLE 164 P0757Z164 TRAVEL STOP T-NUT 128 P0757Z128 Y-AXIS GIB 165 P0757Z165 TRAVEL STOP 129 P0757Z129 Y-AXIS LEADSCREW NUT 166 P0757Z166 EXT RETAINING RING 7MM 130 P0757Z130 CAP SCREW M5-.8 X 25 167 P0757Z167 CAP SCREW M6-1 X 16 131 P0757Z131 Y-AXIS LEADSCREW 168 P0757Z168 FLAT WASHER 6MM 132 P0757Z132 KEY 5 X 5 X 30 169 P0757Z169 FENDER WASHER 8MM 133 P0757Z133 Y-AXIS LEADSCREW BRACKET 170 P0757Z170 LIMIT SWITCH CORD 3W 18G 134 P0757Z134 ANGLE SCALE 171 P0757Z171 POWER FEED POWER CORD 3W 18G

135 P0757Z135 ANGLE INDICATOR PLATE

-72-

Model G0757Z (Mfd. Since 02/15)

264

267

265

Horizontal Spindle

266

201

258

202

203

261

218

259

257

219

260

256

204

221

220

215

255

223

263

205

222

234

222

231

224

233

221

206

262

232

225

209

207

238

208

226

243

210

217

244

211

227

245

228

212

235

246

213 214

229

247

230

248

216

249

236

250-1

250-2

250-3

250-4 250-5

250-6250-7

250-8

250-10

250-9

Model G0757Z (Mfd. Since 02/15)

250

237

251

253

254

239

244

242

241

232

252

-73 -

Horizontal Spindle Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

201 P0757Z201 CAP SCREW M8-1.25 X 25 239 P0757Z239 TENSION ROD END BRACKET 202 P0757Z202 BALL OILER 8MM PRESS-IN 241 P0757Z241 THUMB WHEEL M8-1.25 203 P0757Z203 INBOARD END COVER 242 P0757Z242 LOWER IDLER PULLEY SHAFT 204 P0757Z204 HORIZONTAL SPINDLE R-8 243 P0757Z243 TENSION PIVOT ARM 205 P0757Z205 TAPERED ROLLER BEARING 32011 P5 244 P0757Z244 BALL BEARING 6003ZZ 206 P0757Z206 HORIZONTAL QUILL 245 P0757Z245 SPACER 207 P0757Z207 TAPERED ROLLER BEARING 30308 P5 246 P0757Z246 INT RETAINING RING 35MM 208 P0757Z208 SPANNER LOCK WASHER 39MM 247 P0757Z247 EXT RETAINING RING 17MM 209 P0757Z209 SPANNER NUT M39-1.5 248 P0757Z248 LOWER IDLER PULLEY 210 P0757Z210 SPACER 4 X 90MM 249 P0757Z249 V-BELT A31.5 211 P0757Z211 OUTBOARD END COVER 250 P0757Z250 HORIZONTAL SPINDLE MOTOR 2HP 220V 1-PH 212 P0757Z212 CAP SCREW M8-1.25 X 25 250-1 P0757Z250-1 MOTOR FAN COVER 213 P0757Z213 HORIZONTAL SPINDLE PULLEY 250-2 P0757Z250-2 MOTOR FAN 214 P0757Z214 EXT RETAINING RING 35MM 250-3 P0757Z250-3 MOTOR JUNCTION BOX 215 P0757Z215 KEY 10 X 8 X 30 250-4 P0757Z250-4 R CAPACITOR 20M 450V 1-5/8 X 3-1/8 216 P0757Z216 V-BELT GATES A33 250-5 P0757Z250-5 S CAPACITOR 150M 250V 1-5/8 X 3-1/8 217 P0757Z217 KEY 6 X 6 X 30 250-6 P0757Z250-6 CENTRIFUGAL SWITCH 218 P0757Z218 EXT RETAINING RING 20MM 250-7 P0757Z250-7 CONTACT PLATE 219 P0757Z219 TRANSFER PULLEY 250-8 P0757Z250-8 BALL BEARING 6205ZZ (FRONT) 220 P0757Z220 EXT RETAINING RING 28MM 250-9 P0757Z250-9 BALL BEARING 6205ZZ (REAR) 221 P0757Z221 INT RETAINING RING 47MM 250-10 P0757Z250-10 MOTOR CORD 5W 14G 222 P0757Z222 BALL BEARING 6005ZZ 251 P0757Z251 KEY 8 X 8 X 45 223 P0757Z223 SPACER 252 P0757Z252 HORIZONTAL MOTOR PULLEY 224 P0757Z224 BEARING SEAT 253 P0757Z253 LOCK WASHER 8MM 225 P0757Z225 SPANNER NUT M64-2 254 P0757Z254 HEX BOLT M8-1.25 X 30 226 P0757Z226 UPPER IDLER PULLEY SHAFT 255 P0757Z255 HORIZONTAL ARBOR 1-1/4" 227 P0757Z227 KEY 8 X 8 X 40 256 P0757Z256 SET SCREW M5-.8 X 8 DOG-PT 228 P0757Z228 UPPER IDLER PULLEY 257 P0757Z257 SET SCREW M5-.8 X 6 229 P0757Z229 EXT RETAINING RING 25MM 258 P0757Z258 HORIZONTAL ARBOR NUT 1-1/4 X 7TPI 230 P0757Z230 V-BELT GATES A34 259 P0757Z259 ARBOR SPACER 1-1/4" X 1" 231 P0757Z231 SPANNER NUT LOCKDOWN BAR 260 P0757Z260 ARBOR SPACER 1-1/4" X 2" 232 P0757Z232 CAP SCREW M6-1 X 25 261 P0757Z261 ARBOR SPACER 1-1/4" X 3-1/8" 233 P0757Z233 CAP SCREW M8-1.25 X 60 262 P0757Z262 HORIZONTAL DRAWBAR 7/16-20 X 13-3/4 234 P0757Z234 HORIZONTAL MOTOR/PULLEY BRACKET 263 P0757Z263 HORIZONTAL ARBOR 1" 235 P0757Z235 CAP SCREW M12-1.75 X 80 264 P0757Z264 HORIZONTAL ARBOR NUT 1-8 236 P0757Z236 HEX NUT M16-2 265 P0757Z265 ARBOR SPACER 1" X 1" 237 P0757Z237 FLAT WASHER 16MM 266 P0757Z266 ARBOR SPACER 1" X 2" 238 P0757Z238 TENSION ROD END M8-1.25 X 90 267 P0757Z267 ARBOR SPACER 1" X 3-1/8"

-74 -

Model G0757Z (Mfd. Since 02/15)

301

302

303

355

317

316

315

314

313

351

312

311

306

305

304

307

347

346

345

344

327

342

341

338

339

325

326

327

328

329

330

331

332

324

323

322

321

338

336

337

353

352

334

333

335

319

320

348

349

350

310

308

309

354

356

Vertical Spindle

Model G0757Z (Mfd. Since 02/15)

-75 -

Vertical Spindle Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

301 P0757Z301 HEADSTOCK CASTING 329 P0757Z329 COARSE DOWNFEED LEVER HUB 302 P0757Z302 GEAR 50T 330 P0757Z330 COARSE DOWNFEED LEVER M12-1.75 X 15 303 P0757Z303 CAP SCREW M6-1 X 70 331 P0757Z331 COMPRESSION SPRING 304 P0757Z304 SET SCREW M5-.8 X 6 DOG-PT 332 P0757Z332 LEVER HUB END CAP 305 P0757Z305 SET SCREW M5-.8 X 6 333 P0757Z333 CAP SCREW M6-1 X 12 306 P0757Z306 VERTICAL SPINDLE R-8 334 P0757Z334 DOWNFEED SELECTION SHAFT 307 P0757Z307 TAPERED ROLLER BEARING 32010 P5 335 P0757Z335 SHAFT HANDLE M8-1.25 X 10 308 P0757Z308 VERTICAL SPINDLE LOWER OIL CUP 336 P0757Z336 BEARING CAP 309 P0757Z309 QUILL 337 P0757Z337 CAP SCREW M6-1 X 12 310 P0757Z310 RUBBER GASKET 90MM 338 P0757Z338 BALL BEARING 6002ZZ 311 P0757Z311 BALL BEARING 6009ZZ P5 339 P0757Z339 FINE DOWNFEED WORM SHAFT 312 P0757Z312 SPANNER NUT TOOTHED WASHER 40MM 341 P0757Z341 WORM SHAFT BRACKET 313 P0757Z313 SPANNER NUT M40-1.5 342 P0757Z342 CAP SCREW M6-1 X 20 314 P0757Z314 CAP SCREW M4-.7 X 8 344 P0757Z344 FINE DOWNFEED GRADUATED DIAL 315 P0757Z315 SPRING CAP 345 P0757Z345 SET SCREW M6-1 X 12 316 P0757Z316 RETURN COIL SPRING 346 P0757Z346 FINE DOWNFEED HANDWHEEL 317 P0757Z317 SPRING BASE 347 P0757Z347 HANDWHEEL HANDLE M8-1.25 X 10 319 P0757Z319 SET SCREW M8-1.25 X 16 348 P0757Z348 INNER QUILL LOCK SLEEVE 320 P0757Z320 DOWNFEED GEAR HOUSING 349 P0757Z349 OUTER QUILL LOCK SLEEVE 321 P0757Z321 CAP SCREW M8-1.25 X 25 350 P0757Z350 ADJUSTABLE HANDLE M10-1.5 X 90 322 P0757Z322 DOWEL PIN 6 X 25 351 P0757Z351 SET SCREW M10-1.5 X 10 323 P0757Z323 COARSE DOWNFEED GEAR SHAFT 16T 352 P0757Z352 COVER PLATE 324 P0757Z324 KEY 8 X 8 X 38 353 P0757Z353 CAP SCREW M5-.8 X 10 325 P0757Z325 WORM GEAR 354 P0757Z354 GEARBOX MOUNTING PLATE 326 P0757Z326 EXT RETAINING RING 30MM 355 P0757Z355 CAP SCREW M10-1.5 X 30 327 P0757Z327 THUMB SCREW M6-1 X 16 356 P0757Z356 DOWEL PIN 8 X 25 328 P0757Z328 COARSE DOWNFEED GRADUATED DIAL

-76 -

Model G0757Z (Mfd. Since 02/15)

Vertical Gearbox

458

459

456

411

410

409

411

459

404

408

407

406

411

404

453-1

453-4

453-5

414

415

453-7

453-6

457

453-2

453-8

454

460

413

412

417

418

419

420

421 420

417

455

416

453-3

428

423

424

425

426 427

417

453

417

429

452

451

420

423

450

417

430

431

420

432

417

433

437

434

403

402

Model G0757Z (Mfd. Since 02/15)

401

422

445

447

448

446

449

441

444

435

436

438

439

440

442

443

-77-

Vertical Gearbox Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

401 P0757Z401 GEARBOX CASTING 435 P0757Z435 ROCKER ARM 402 P0757Z402 COLLAR 436 P0757Z436 EXT RETAINING RING 10MM 403 P0757Z403 OIL SEAL FB 45 X 62 X 8MM 437 P0757Z437 DOWEL PIN 5 X 30MM 404 P0757Z404 BALL BEARING 6009-OPEN 438 P0757Z438 SMALL SPINDLE 406 P0757Z405 GEAR 38T 439 P0757Z439 O-RING 12 X 2 P12 407 P0757Z407 SPACER 440 P0757Z440 O-RING 20 X 2 P20 408 P0757Z408 KEY 8 X 8 X 50 441 P0757Z441 HIGH/LOW GEAR PLATE 409 P0757Z409 SPINDLE SHAFT 442 P0757Z442 FLAT HD SCR M5-.8 X 12 410 P0757Z410 RPM SENSOR ROTOR 443 P0757Z443 DOWEL PIN 5 X 50MM 411 P0757Z411 EXT RETAINING RING 45MM 444 P0757Z444 HIGH/LOW GEAR HUB 412 P0757Z412 ROTOR GUARD 445 P0757Z445 HIGH/LOW GEAR HANDLE M8-1.25 X 10 413 P0757Z413 CAP SCREW M5-.8 X 16 446 P0757Z446 STEEL BALL 6MM 414 P0757Z414 HEX BOLT M16-2 X 10 447 P0757Z447 COMPRESSION SPRING 415 P0757Z415 GEARBOX COVER 448 P0757Z448 SET SCREW M8-1.25 X 12 416 P0757Z416 DRIVE SHAFT END CAP 449 P0757Z449 SIGHTGLASS M27-1.5 X 12 417 P0757Z417 BALL BEARING 6204ZZ 450 P0757Z450 CAP SCREW M10-1.5 X 25 418 P0757Z418 REAR DRIVE SHAFT 451 P0757Z451 KEY 8 X 8 X 40 419 P0757Z419 GEAR 44T 452 P0757Z452 GEAR 20T 420 P0757Z420 EXT RETAINING RING 25MM 453 P0757Z453 VERTICAL MOTOR 3HP 220V 3-PH 421 P0757Z421 GEAR 36T 453-1 P0757Z453-1 FAN JUNCTION BOX 422 P0757Z422 DRIVE SHAFT END CAP 453-2 P0757Z453-2 MOTOR JUNCTION BOX 423 P0757Z423 REAR SHAFT END CAP 453-3 P0757Z453-3 FAN COVER 424 P0757Z424 CENTER DRIVE SHAFT 453-4 P0757Z453-4 INDEPENDENT MOTOR FAN 425 P0757Z425 GEAR 33T 453-5 P0757Z453-5 FRONT MOTOR BEARING 426 P0757Z426 SPACER 453-6 P0757Z453-6 REAR MOTOR BEARING 427 P0757Z427 GEAR 28T 453-7 P0757Z453-7 MOTOR CORD 5W 14G 428 P0757Z428 GEAR 48T 453-8 P0757Z453-8 FAN CORD 2W 18G 429 P0757Z429 SPACER 454 P0757Z454 HEX BOLT M12-1.75 X 40 430 P0757Z430 FRONT DRIVE SHAFT 455 P0757Z455 FLAT WASHER 12MM 431 P0757Z431 GEAR 24T 456 P0757Z456 SPEED SENSOR BRACKET 432 P0757Z432 GEAR 42T/22T 457 P0757Z457 SPEED SENSOR 433 P0757Z433 HEX BOLT M10-1.5 X 12 458 P0757Z458 SPEED SENSOR COVER 434 P0757Z434 LIFT FORK 459 P0757Z459 CAP SCREW M4-.7 X 16

460 P0757Z460 LOCK WASHER 12MM

-78 -

Model G0757Z (Mfd. Since 02/15)

Electrical Components

506

505

503

502

504

501

523

519

1L1

13NO 21NC

22E

14NO 22NC 32NC 44NO

2T1 4T2 6T3

PE 0 220 230 380 400

Transformer

JBK5-150VA

523

520

5L3

3L2

31NC 43NO

KM1 Contactor

Siemens 3TB41 24V

525

0 24

514

520

1L1

13NO 21NC

14NO 22NC 32NC 44NO

2T1 4T2 6T3

3L2

31NC 43NO

KM2 Contactor

Siemens 3TB41 24V

22E

5L3

524

523

MOTOR MICRO DRIVER

DELTA VFD-E

AFM

MCM

DCM

MI2

MI4

MI1

MI3

GND

ACM

MI6

DCM

AVI

24V

MI5

ACM

DCM

VT2W

B1+B2

520 520

1L1

3L2

13NO 21NC

KM3 Contactor

Siemens 3TB41 24V

22E 22E

14NO 22NC 32NC 44NO

2T1 4T2 6T3

5L3

31NC 43NO

1L1

3L2

13NO 21NC

KM4 Contactor

Siemens 3TB41 24V

22E

14NO 22NC 32NC 44NO

2T1 4T2 6T3

MO1

ACI

AVI

10V

5L3

31NC 43NO

RCRA

GND

1L1

13NO 21NC

Siemens 3TB41 24V

14NO 22NC 32NC 44NO

2T1 4T2 6T3

523

3/L2

1/L1

21 2213 14

OFF

20-25A NS2-25

Test

CHINT

2/T1 4/T2 6/T3

516

515

512

520 520

1L1

5L3

3L2

31NC 43NO

KM5 Contactor

13NO 21NC

14NO 22NC 32NC 44NO

2T1 4T2 6T3

5/L3

DZ47-60 C2

OFF

QF1 QF2

517

5L3

3L2

31NC 43NO

KA Contactor

Siemens 3TB41 24V

22E

513

523

518

523

509

508

507

506

507

509

508

512

522

1 3

LW26-25

523

5 7

521

523

504

510 511 511

505

525

504

505

526

536

523

511

Model G0757Z (Mfd. Since 02/15)

-79 -

Electrical Components Cont.

527

530

533

Minger

LA125H-BE102C

Minger

LA125H-BE102C

Minger

LA125H-BE101C

Minger

LA125H-BE101C

3 4

531

Minger

LA125H-BE101C

531

532

Minger

LA125H-BE101C

3 4

531

3 4

Minger

LA125H-BE102C

531

534

Minger

LA125H-BE101C

535

3 4

Minger

LA125J-11

D206A

529

GND

+5V

528

Electrical Components Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

501 P0757Z501 ELECTRICAL BOX W/DOOR 519 P0757Z519 DIN RAIL 10" 502 P0757Z502 STRAIN RELIEF PG8 TYPE-5 520 P0757Z520 CONTACTOR SIEMENS 3TB41 24V 503 P0757Z503 CONDUIT 10MM 521 P0757Z521 ROTARY SWITCH CANSEN LW26-25 504 P0757Z504 STRAIN RELIEF PG10 TYPE-5 522 P0757Z522 TERMINAL BAR 32P 505 P0757Z505 CONDUIT 12MM 523 P0757Z523 PHLP HD SCR M4-.7 X 6 506 P0757Z506 VENT COVER 524 P0757Z524 MOUNTING PLATE 507 P0757Z507 VENT FOAM FILTER 525 P0757Z525 WIRE LOOM 10" 508 P0757Z508 VENT BODY 526 P0757Z526 ELECTRICAL BOX LOCK W/KEY 509 P0757Z509 FLAT HD SCR M4-.7 X 6 527 P0757Z527 CONTROL PANEL FACEPLATE 510 P0757Z510 STRAIN RELIEF PG10 TYPE-3 528 P0757Z528 RPM READOUT POWER SUPPLY 511 P0757Z511 STRAIN RELIEF PG12 TYPE-3 529 P0757Z529 POTENTIOMETER XINGHUO WXD3 B4K 512 P0757Z512 WIRE LOOM 12" 530 P0757Z530 BUTTON SWITCH MINGER LA125HBE102C RED 513 P0757Z513 WIRE LOOM 18" 531 P0757Z531 BUTTON SWITCH MINGER LA125HBE101C GREEN 514 P0757Z514 TRANSFORMER JBK5-150V 532 P0757Z532 RPM READOUT DISPLAY 515 P0757Z515 VARIABLE FREQUENCY DRIVE DELTA VFD-E 533 P0757Z533 PUMP SWITCH MINGER LA125HBE101C 516 P0757Z516 OL RELAY CHINT NS2-25 20-25A 534 P0757Z534 E-STOP BUTTON LA125HBE102C 517 P0757Z517 CIRCUIT BREAKER CHINT DZ4760 C2 2P 535 P0757Z535 POWER BUTTON MINGER LA125J11D206A 518 P0757Z518 DIN RAIL 3" 536 P0757Z536 POWER CORD 4W 14G 6 78"

-80-

Model G0757Z (Mfd. Since 02/15)

609

610

611

612

608

613

601

Accessories

606

607

614

602

605

604

603

617

615

616

REF PART # DESCRIPTION REF PART # DESCRIPTION

601 P0757Z601 BOTTLE FOR OIL 610 P0757Z610 HEX WRENCH 6MM 602 P0757Z602 TOOLBOX 611 P0757Z611 HEX WRENCH 5MM 603 P0757Z603 SPINDLE SLEEVE MT#3 X MT#2 612 P0757Z612 HEX WRENCH 4MM 604 P0757Z604 DRILL CHUCK ARBOR R8 X B16 613 P0757Z613 HEX WRENCH 3MM 605 P0757Z605 END MILL ARBOR R8 X 1" 614 P0757Z614 T-BOLT M14-2 X 60 606 P0757Z606 SPINDLE SLEEVE R8 X MT#3 615 P0757Z615 FLAT WASHER 14MM 607 P0757Z607 WRENCH 17 X 19MM OPEN-ENDS 616 P0757Z616 HEX NUT M14-2 608 P0757Z608 WRENCH 22 X 24MM OPEN-ENDS 617 P0757Z617 DRILL CHUCK B16 W/CHUCK KEY 609 P0757Z609 HEX WRENCH 8MM 618 P0757Z618 DRIFT KEY

618

Model G0757Z (Mfd. Since 02/15)

-81-

Labels & Cosmetics

702

703

WARNING!

BIOLOGICAL AND POISON HAZARD!

Use personal protection

when handling coolant.

Immediately clean up

spills.

INJURY/SHOCK

HAZARD! Disconnect power before adjustments, maintenance, or service.

704

705

Specifications

Power Requirement: 220V, 1-Ph, 15A, 70 Hz Vertical Spindle Motor: 3 HP, 220V, 3-Ph, 9.3A Horiz. Spindle Motor: 2 HP, 220V, 1-Ph, 8.7A Table Travel: Cross 8-1/2", Long. 23-1/2" Knee Travel: 12-1/2" Vertical Spindle to Column Distance: 27-3/4" Max. Dist. Vertical Spindle to Table: 14-1/2" Horizontal Spindle to Table Distance: 14-1/8" Vertical Spindle Travel: 5" Headstock Tilt: 90° Left/Right Headstock Rotation Around Column: 180° Spindle Tapers: R-8 Weight: 1874 lbs.

To reduce the risk of serious personal injury when using this machine:

1. Read and understand owner’s manual before operating.

2. Always wear approved safety glasses AND a face shield.

3. Only plug power cord into a grounded outlet.

4. Disconnect power before setting up, adjusting, or servicing.

5. Avoid getting entangled in moving parts—tie back long hair, roll up long sleeves, and DO NOT wear loose clothing, gloves, or jewelry.

7. Properly set up machine before starting.

7. Always remove adjustment tools before starting.

8. Keep all guards and covers in place during operation.

9. Never use hands to secure workpiece to table during operation—use clamps or a vise.

10. Avoid positioning hands where they could slip into rotating bits or tooling if workpiece unexpectedly shifts or you get distracted.

11. Always use a brush or vacuum to remove metal chips; DO NOT use your hands, rags, or compressed air.

12. Never attempt to slow or stop spindle with hands or tools.

13. Always use proper feeds and speeds for operation and workpiece.

14. Never leave machine running unattended.

15. DO NOT operate when tired or under influence of drugs or alcohol.

17. DO NOT expose to rain or use in wet locations.

17. Prevent unauthorized use by children or untrained users; restrict access or disable machine when unattended.

READ and UNDERSTAND instruction manual to avoid serious injury. If a manual is not available, DO NOT use machine. Go to www.grizzly.com or call (800) 523-4777.

ENTANGLEMENT

HAZARD!

Tie back long hair, roll up long sleeves, and remove loose clothing, jewelry, or gloves to prevent getting caught in moving parts.

707

701

WARNING!

MODEL G0757Z

V.S. HORIZONTAL/

VERTICAL MILL

Manufactured for Grizzly in China

EYE/FACE INJURY

Always wear ANSI-approved safety glasses and face shield when using this machine.

INJURY/SHOCK

Disconnect power before adjustments, maintenance, or service.

Date

S/N

706

G0757Z

HAZARD!

703

INJURY/SHOCK

HAZARD! Disconnect power before adjustments, maintenance, or service.

701

709

grizzly.com

708

REF PART # DESCRIPTION REF PART # DESCRIPTION

701 P0757Z701 ELECTRICITY LABEL 706 P0757Z706 MODEL NUMBER LABEL 702 P0757Z702 BIOHAZARD WARNING LABEL 707 P0757Z707 GRIZZLY GREEN TOUCH-UP PAINT 703 P0757Z703 DISCONNECT WARNING LABEL 708 P0757Z708 GRIZZLY PUTTY TOUCH-UP PAINT 704 P0757Z704 GRIZZLY OBLONG NAMEPLATE-SMALL 709 P0757Z709 GRIZZLY.COM LABEL 705 P0757Z705 MACHINE ID LABEL

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes off or becomes unreadable, the owner of this machine MUST replace it in the original location before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.

-82-

Model G0757Z (Mfd. Since 02/15)

WARRANTY CARD

Name _____________________________________________________________________________

Street _____________________________________________________________________________

City _______________________ State _________________________ Zip _____________________

Phone # ____________________ Email _________________________________________________

Model # ____________________ Order # _______________________ Serial # __________________

The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop better products and services. Of course, all information is strictly confidential.

1. How did you learn about us? ____ Advertisement ____ Friend ____ Catalog ____ Card Deck ____ Website ____ Other:

2. Which of the following magazines do you subscribe to?

____ Cabinetmaker & FDM ____ Family Handyman ____ Hand Loader ____ Handy ____ Home Shop Machinist ____ Journal of Light Cont. ____ Live Steam ____ Model Airplane News ____ Old House Journal ____ Popular Mechanics

3. What is your annual household income? ____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000 ____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+

CUT ALONG DOTTED LINE

4. What is your age group? ____ 20-29 ____ 30-39 ____ 40-49 ____ 50-59 ____ 60-69 ____ 70+

5. How long have you been a woodworker/metalworker? ____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____20+ Years

6. How many of your machines or tools are Grizzly? ____ 0-2 ____ 3-5 ____ 6-9 ____10+

____ Popular Science ____ Popular Woodworking ____ Precision Shooter ____ Projects in Metal ____ RC Modeler ____ Rie ____ Shop Notes ____ Shotgun News ____ Today’s Homeowner ____ Wood

____ Wooden Boat ____ Woodshop News ____ Woodsmith ____ Woodwork ____ Woodworker West ____ Woodworker’s Journal ____ Other:

7. Do you think your machine represents a good value? _____ Yes _____No

8. Would you recommend Grizzly Industrial to a friend? _____Yes _____No

9. Would you allow us to use your name as a reference for Grizzly customers in your area? Note: We never use names more than 3 times. _____Yes _____No

10. Comments: _____________________________________________________________________

_________________________________________________________________________________

FOLD ALONG DOTTED LINE

Place

Stamp

Here

GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069

Send a Grizzly Catalog to a friend:

Name_______________________________

Street_______________________________

City______________State______Zip______

TAPE ALONG EDGES--PLEASE DO NOT STAPLE

WARRANTY & RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We will not accept any item back without this number. Proof of purchase must accompany the merchandise.

The manufacturers reserve the right to change specifications at any time because they constantly strive to achieve better quality equipment. We make every effort to ensure that our products meet high quality and durability standards and we hope you never need to use this warranty.

Please feel free to write or call us if you have any questions about the machine or the manual.

Thank you again for your business and continued support. We hope to serve you again soon.

Grizzly G0757Z User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

INTRODUCTION

Contact Info

Manual Accuracy

Left Front View Identification

Right Front View Identification

Machine Data Sheet

SECTION 1: SAFETY

Safety Instructions for Machinery

Additional Safety for Milling Machines

SECTION 2: POWER SUPPLY

SECTION 3: SETUP

Needed for Setup

Unpacking

Inventory

Cleanup

Site Considerations

Lifting & Placing

Leveling

Anchoring to Floor

Verifying Lubrication

Assembly

Power Connection

Test Run

Spindle Break-In

SECTION 4: OPERATIONS

Operation Overview

Table Movement

Head Tilt

Ram Movement

Spindle Speed

SECTION 5: ACCESSORIES

SECTION 6: MAINTENANCE

Schedule

Lubrication

V-Belt Service

Machine Storage

SECTION 7: SERVICE

Troubleshooting

Tramming Mill Head

Adjusting Gibs

SECTION 8: WIRING

Wiring Safety Instructions

Wiring Overview

Component Location

Electrical Panel Wiring Diagram

Control Panel Wiring

Vertical Spindle Motor Wiring

Horizontal Spindle Motor Wiring

Coolant Pump Wiring

DRO Wiring

SECTION 9: PARTS

Column

Table

Horizontal Spindle

Vertical Spindle

Vertical Gearbox

Electrical Components

Electrical Components Cont.

Accessories

Labels & Cosmetics

WARRANTY & RETURNS