Grizzly G0728 User Manual

Models G0728, G0729, G0730

& G0731

VERTICAL MILLING MACHINES

OWNER'S MANUAL

(For models manufactured since 11/11)

COPYRIGHT © DECEMBER, 2011 BY GRIZZLY INDUSTRIAL, INC., REVISED MAY, 2013 (TS)

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

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

#KN14570 PRINTED IN TAI WA N

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

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

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

Machine Description ...................................... 2

Identification ................................................... 3

Machine Data Sheet ...................................... 4

SECTION 1: SAFETY ....................................... 6

Safety Instructions for Machinery .................. 6

Additional Safety Instructions For Mills .......... 8

SECTION 2: POWER SUPPLY ........................ 9

Availability ........................................................... 9

Full-Load Current Rating .................................... 9

Circuit Information ............................................... 9

Circuit Requirements for 110V ............................9

Circuit Requirements for 220V ............................9

Grounding Requirements .................................. 10

Extension Cords ................................................ 10

Voltage Conversion ........................................... 11

Replacing the Plug ............................................ 11

SECTION 3: SETUP ....................................... 12

Setup Safety ................................................ 12

Needed for Setup ......................................... 12

Unpacking .................................................... 12

Inventory ...................................................... 13

Cleanup ........................................................ 13

Site Considerations ...................................... 14

Moving & Placing Base Unit ........................ 15

Mounting ...................................................... 16

Bolting to Concrete Floors ................................ 16

Using Machine Mounts .....................................16

Assembly ..................................................... 17

Initial Lubrication ......................................... 18

Power Connection........................................ 18

Connecting Power ............................................. 18

Disconnecting Power ........................................ 18

Test Run ...................................................... 19

Spindle Break-In .......................................... 20

SECTION 4: OPERATIONS ........................... 21

Operation Safety .......................................... 21

Basic Controls .............................................. 21

Table Movement .......................................... 22

Locks ................................................................. 22

Limit Stops ........................................................ 22

Longitudinal Power Feed System ..................... 23

Head Tilting .................................................. 24

Turret Rotation ............................................. 25

Tramming Spindle ........................................ 26

Adjusting Spindle Speed .............................. 27

Calculating Spindle Speed ................................ 27

Setting Spindle Speed ......................................27

Downfeed Controls ...................................... 28

Loading/Unloading Tooling .......................... 29

Loading Tooling ................................................29

Unloading Tooling ............................................. 29

SECTION 5: ACCESSORIES ......................... 30

SECTION 6: MAINTENANCE ......................... 31

Schedule ...................................................... 31

Cleaning & Protecting .................................. 31

Lubrication ................................................... 31

One-Shot Oiler .................................................. 32

Quill Gearing ..................................................... 32

Vertical Bevel Gears ......................................... 32

Leadscrews ....................................................... 33

V-Belt Tensioning......................................... 33

SECTION 7: SERVICE ................................... 34

Troubleshooting ........................................... 34

Motor & Electrical .............................................. 34

Operation .......................................................... 35

Adjusting Gibs .............................................. 36

Adjusting Backlash....................................... 37

SECTION 8: WIRING ...................................... 38

Wiring Safety Instructions ............................ 38

G0728 & G0729 Wiring Diagram ................. 39

G0730 & G0731 Wiring Diagram ................. 40

SECTION 9: PARTS ....................................... 41

G0728 & G0729 Head ................................. 41

G0728 & G0729 Drive System .................... 43

G0728 & G0729 Table & Saddle ................. 44

G0728 & G0729 Knee & Base..................... 45

G0728 & G0729 Machine Labels ................ 47

G0730 & G0731 Head ................................. 48

G0730 & G0731 Drive System .................... 50

G0730 & G0731 Table & Saddle ................. 51

G0730 & G0731 Knee & Base..................... 52

G0730 & G0731 Machine Labels ................ 54

WARRANTY AND RETURNS ........................ 57

INTRODUCTION

We are proud to offer this manual with your new
machine! We've made every effort to be exact
with the instructions, specifications, drawings,
and photographs of the machine we used when
writing this manual. However, sometimes we still
make

Also, owing to our policy of continuous improve­ment, your machine may not exactly match the

manual. If you find this to be the case, and the dif-

ference between the manual and machine leaves
you in doubt,
manual update or call technical support for help.

Before calling, find the manufacture date of your
machine by looking at the date stamped into the
machine ID label (see below). This will help us
determine if the manual version you received
matches the manufacture date of your machine.

For your convenience, we

-

uals and

on our website

at

model
of
as soon as they are complete.

Manual Accuracy

an occasional mistake.

check our website for the latest

manual updates for free

www.grizzly.com. Any updates to your

machine will be reflected in these documents

Manufacture Date

of Your Machine

post all available man

Contact Info

We stand behind our machines. If you have any
service questions, parts requests or general ques­tions about the machine, please call or write us at
the location listed below.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: [phone]

Fax: [phone]

E-Mail: [e-mail]

If you have any comments regarding this manual,
please write to us at the address below:

C

/O Technical Documentation Manager

Grizzly Industrial, Inc.

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [e-mail]

Machine Description

The G0728/G0729/G0730/G0731 Vertical Milling
machines are knee mills with 3-axis table move­ment and 9 speeds designed for milling solid
materials. The turret and head pivot, increasing
versatility for cutting operations. These are great
mills for basic machine operations, such as slot
and keyway cutting, planing, and drilling.

-2-

Models G0728–31 (Mfg. Since 11/11)

Identification

V-Belt Cover

Fine Downfeed Handwheel

Longitudinal Limit Stop Track

Cross Feed Handwheel

Front View

Coarse Downfeed

Handle

V-Belt Tension Adjustment Bolt

Spindle Bearing Oil Cup

ON/OFF Spindle Direction Switch

X-Axis Crank Handwheel

Y-Axis Feed Limit Stop

Track

Knee

Motor 1 1⁄2 H P

110V/220V, Single

Phase

Column

Splash

Pan

Base

Downfeed Selector

Turret

Z-Axis Crank Handle

One-Shot Oiler

Rear View

Figure 1. Vertical mill identification (Model G0728 shown).

Model G0728–31 (Mfg. Since 11/11)

-3-

Machine Data Sheet

MODEL G0728/G0729/G0730/G0731

VERTICAL MILLING MACHINES

Model Number

Product Dimensions

Weight

Width x Depth x Height

Footprint Size (Length x Width)

Shipping Dimensions

Type

Content

Weight

Length x Width x Height

Electrical

Power Requirement

Prewired Voltage

Full Load Current Rating

Minimum Circuit Size

Switch

Switch Voltage

Cord Length

Cord Gauge

Plug Included

Included Plug Type

Recommended Plug/Outlet Type

Motor

Type

Horsepower

Voltage

Prewired

Phase

Amps

Speed

Cycle

Number of Speeds

Power Transfer

Bearing

G0728 G0729 G0730 G0731

660 lbs. 671 lbs. 924 lbs. 935 lbs.

3

45

⁄4" x 49 3⁄4" x 68" 40 1⁄2" x 42 3⁄4" x 67"

1

⁄2" x 21" 19" x 36"

27

Wood Crate

Machine

770 lbs. 781 lbs. 1078 lbs. 1089 lbs.

42" x 42" x 71" 44" x 44" x 76"

110V/220V, Single-Phase, 60 Hz

110V

18A at 110V; 9A at 220V

20A at 110V; 15A at 220V

Forward/Reverse Rotary Switch

110V/220V

72"

14 AWG

Yes

NEMA 5-15

NEMA 6-15 for 220V

TEFC Capacitor Start Induction

1

1

⁄2

110V/220V

110V

Single-Phase

18A/9A

1725 RPM

60 Hz

1

V-Belt Drive

Shielded and Permanently Lubricated

Operation Info

Spindle Travel

data sheet

-4-

3" 3

Models G0728–31 (Mfg. Since 11/11)

1

⁄2"

Model Number

Model Number

Operation Info (cont'd)

Swing

Longitudinal Table Travel

Cross Table Travel

Knee Travel

Head Swivel (Left-to-right)

Turret/Column Swivel (Left and Right)

Max. Distance Spindle to Column

Max. Distance Spindle to Table

Drilling Capacity for Cast Iron

Drilling Capacity for Steel

Number of Vertical Spindle Speeds

Range of Vertical Spindle Speeds
(RPM)

Quill Diameter

Table Info

Table Length

Table Width

Table Thickness

Number of T-Slots

T-Slots Width

T-Slots Height

T-Slots Centers

Stud Size

Spindle Info

Spindle Taper

End Milling Capacity

Face Milling Capacity

Drawbar Diameter

Drawbar TPI

Drawbar Length

Spindle Bearings

G0728 G0729 G0730 G0731

G0728 G0729 G0730 G0731

13" 14"

5

⁄8" 18"

15

3

6" 7

1

⁄2" 17 3⁄4"

13

⁄4"

45° Left/Right

360°

1

⁄2" 7"

6

1

⁄4" 20"

12

1"

3

⁄4"

9

230, 320, 570, 670, 1200, 1420, 1650,

2170, 2520

270, 420, 490, 950, 1110, 1410, 1720,

2050, 3200

2.950"

26" 30"

1

⁄8" 8"

6

3

⁄4" 2"

1

3

9

⁄16"

13

⁄16"

11

⁄16" 2 3⁄16"

1

3

⁄8"

1

⁄2"

7

⁄8"

R8

3

⁄4" 1"

3"

7

⁄16"

20 TPI

3

12" 12

⁄8"

Angular Contact Bearing

Leadscrew Info

Leadscrew Diameter

Leadscrew TPI

Leadscrew Length

Construction

Spindle Housing/Quill

Table

Head/Column/Base

Stand

Paint

Other Specifications

Warranty

Country of Origin

Model G0728–31 (Mfg. Since 11/11)

7

⁄8"

8 TPI

35" 41"

Chrome-Plated Cast Iron Chrome-Plated Steel

Precision-Ground Cast Iron

Cast Iron

Stamped Steel Cast Iron

Epoxy

1 Year

Taiwan

-5-

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-

-6-

Models G0728–31 (Mfg. Since 11/11)



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 avoid
accidentalslips,whichcouldcause lossofwork­piececontrol.

hAzARdOus dusT. Dust created while using
machinery may cause cancer, birth defects, or
long-term respiratory damage.Be aware ofdust
hazardsassociatedwitheachworkpiecematerial,
and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!

INTENdEd usAGE. Only use machine for its
intendedpurposeandnevermakemodifications
not approved by Grizzly. Modifying machine or
using it differently than intended may result in
malfunctionormechanicalfailurethatcanleadto
serious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.

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.

ChECK dAMAGEd PARTs. Regularly inspect
machine for any condition that may affect safe
operation.Immediatelyrepairorreplacedamaged
ormis-adjustedpartsbeforeoperatingmachine.

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.

GuARds & COVERs.Guardsandcoversreduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged,andworkingcorrectly.

Model G0728–31 (Mfg. Since 11/11)

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

-7-

Additional Safety Instructions For Mills

UNDERSTANDING CONTROLS: The mill is a

complex machine that presents severe cutting or
entanglement hazards if used incorrectly. Make
sure you understand the use and operation of all
controls before you begin milling.

SAFETY ACCESSORIES: Flying chips or debris
from the cutting operation can cause eye injury
or blindness. Always use a chip guard in addition
to your safety glasses, or use a face shield when
milling.

WORK HOLDING: Milling a workpiece that is not
properly clamped to the table could cause the
workpiece to be thrown at the operator with deadly
force! Before starting the machine, be certain
the workpiece has been properly clamped to the
table. NEVER hold the workpiece by hand during
operation.

SPINDLE SPEED: To avoid tool or workpiece
breakage that could send flying debris at the
operator and bystanders, use the correct spindle
speed and feed rate for the operation. Allow the
mill to gain full speed before beginning the cut.

SPINDLE DIRECTION CHANGE: Changing
spindle rotation direction while it is spinning could
lead to gear damage or impact injury from broken
tool or workpiece debris. ALWAYS make sure the
spindle has completely stopped before changing
spindle direction.

STOPPING SPINDLE: To reduce the risk of
hand injuries or entanglement hazards, DO NOT
attempt to stop the spindle with your hand or a
tool. Allow the spindle to stop on its own or use
the spindle brake.

CHIP CLEANUP: Chips from the operation are
sharp and hot and can cause cuts or burns. Using
compressed air to clear chips could cause them
to fly into your eyes and may drive them deep into
the working parts of the machine. Use a brush or
vacuum to clear away chips and debris from the
machine or workpiece and NEVER clear chips
while the spindle is turning.

MACHINE CARE AND MAINTENANCE:

Operating the mill with excessively worn or dam­aged machine parts increases the risk of machine
or workpiece breakage, which could eject hazard­ous debris at the operator. Operating a mill that
is in poor condition will also reduce the quality of
the results. To reduce this risk, maintain the mill
in proper working condition by ALWAYS promptly
performing routine inspections and maintenance.

CUTTING TOOL USAGE: Cutting tools have
very sharp leading edges—handle them with
care! Using cutting tools that are in good condition
helps to ensure quality milling results and reduces
the risk of personal injury from broken tool debris.
Inspect cutting tools for sharpness, chips, or
cracks before each use, and ALWAYS make sure
the cutting tools are firmly held in place before
starting the machine.

Like all machinery there is potential danger when operating this mill. Accidents are frequently
caused by lack of familiarity or failure to pay attention. Use this mill with respect and caution to
reduce the risk of operator injury. If normal safety precautions are overlooked or ignored, serious
personal injury may occur.

-8-

Models G0728–31 (Mfg. Since 11/11)

SECTION 2: POWER SUPPLY

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.

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.)

This machine can be converted to operate on a
220V power supply (refer to Voltage Conversion
instructions). This power supply must have a veri­fied ground and meet the following requirements:

This machine is prewired to operate on a 110V
power supply circuit that has a verified ground and
meets the following requirements:

Availability

supply.

Full-Load Current Rating

Circuit Information

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

Full-Load Current Rating at 110V ...... 18 Amps

Full-Load Current Rating at 220V ....... 9 Amps

Model G0728–31 (Mfg. Since 11/11)

Circuit Requirements for 110V

Nominal Voltage ...............................110V/120V

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

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

Power Supply Circuit ......................... 20 Amps

Plug/Receptacle ............................. NEMA 5-15

Circuit Requirements for 220V

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

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

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

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

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

-9-

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.

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 Requirements

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.

For 110V operation: This machine is equipped
with a power cord that has an equipment-ground­ing wire and a grounding plug (see following fig­ure). 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.

For 220V operation: The plug specified under
“
page has a grounding prong that must be attached
to the equipment-grounding wire on the included
power cord. The plug must only be inserted into
a matching receptacle (see following figure) that
is properly installed and grounded in accordance
with all local codes and ordinances.

it will not fit the outlet, have a qualified
electrician install the proper outlet with a

GROUNDED

5-15 RECEPTACLE

Grounding Prong

GROUNDED

6-15 RECEPTACLE

Current Carrying Prongs

6-15 PLUG

Grounding Prong

Figure 3. Typical 6-15 plug and receptacle.

5-15 PLUG

Neutral Hot

Figure 2. Typical 5-15 plug and receptacle.

SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if

verified ground.

Circuit Requirements for 220V” on the previous

-10 -

Extension Cords

If you must use an extension

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

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

Models G0728–31 (Mfg. Since 11/11)

Voltage Conversion

To convert this mill for 220V power, you must re­wire the motor and install a NEMA 6-15 plug and
receptacle.

Motor prewired
for 110V

3

Refer to Page 39 for the full Wiring Diagram.

You MUST disconnect the
mill from the power source
before beginning any of
the following 220V conver­sion procedures to avoid
serious personal injury or
death by electrocution.

Tools/Items Needed Qty

Phillips Head Screwdriver #2 ............................ 1

Wire Nut ............................................................ 1

To rewire the motor:

1. Remove the cover of the motor wiring junc-

tion box.

1

4

2

5

6

Ground

Figure 4. Motor configured for 110V operation.

Motor Rewired for 220V

4

2. Re-configure the motor wiring by removing
wires 1, 3, 4, 2, 5, and 6 from the terminal
block (see Figure 4).

3. Replace wires 4, 1, and 6 on the terminal
block, as shown in Figure 5.

4. Use the wire nut to secure wires 2, 3, and 5
together, as shown in Figure 5.

5. Replace the cover of the motor wiring junc­tion box.

Replacing the Plug

Replace the molded NEMA 5-15 plug with a
NEMA 6-15 by removing the original and install­ing the new plug according to the manufacturer's
instructions.

1

6

3

2

5

Ground

Figure 5. Motor configured for 220V operation.

Covers, guards, and safety devices on
this machine are provided for your safety.
Always keep them secured in place before
connecting the machine to power to avoid
serious personal injury.

Model G0728–31 (Mfg. Since 11/11)

-11-

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 [phone]

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

Setup Safety

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!

Needed for Setup

The following items are needed to complete the
setup process, but are not included with your
machine:

Description Qty

• Assistants ................................................... 2

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

• External Retaining Ring Pliers ................... 1

• Safety Glasses ........................ 1 Per Person

• Lifting Straps

(rated for at least 1500 lbs.) ........................ 2

• Power Lifting Equipment

(rated for at least 1500 lbs.) ........................ 1

• Machine Mounting Hardware ..... As Needed

• Cleaning Solvent & Rags ........... As Needed

• Wrench

1

⁄2 " ................................................. 1

Unpacking

This vertical mill is a
heavy machine. Serious
personal injury may
occur if safe moving
methods are not used.
To be safe, get assis­tance and use power
equipment rated for at
least 1500 lbs. to move
the shipping crate and
remove the machine
from the crate.

for advice.

SUFFOCATION HAZARD!

machine. Discard immediately.

-12-

Models G0728–31 (Mfg. Since 11/11)

Inventory

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:

•

•

•

•

Basic steps for removing rust preventative:

1.

2.

amount of cleaner/degreaser, then let it soak

3. Wipe off the surfaces. If your cleaner/degreas-

off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe

4.

then coat all unpainted surfaces with a quality

Avoid chlorine-based solvents, such as

The following is a description of the main compo­nents shipped with your machine. Lay the compo­nents out to inventory them.

Note: If you can't find an item on this list, check
the mounting location on the machine or examine
the packaging materials carefully. Occasionally
we pre-install certain components for shipping
purposes.

Inventory: (Figure 6) Qty

A. Hex Wrench 4mm ....................................... 1

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

C. Double End Wrench 12mm & 14mm .......... 1

D. Handwheel Handles ................................... 3

E. Crank Arm (not shown) ............................... 1

Cleanup

Disposable Rags
Cleaner/degreaser (WD•40 works well)
Safety glasses & disposable gloves
Plastic paint scraper (optional)

A

B

Figure 6. Model G0728 inventory.

If any nonproprietary 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.

C

D

Put on safety glasses.

Coat the rust preventative with a liberal

for 5–10 minutes.

er is effective, the rust preventative will wipe

off the rest with the rag.

Repeat Steps 2–3 as necessary until clean,

metal protectant to prevent rust.

NOTICE

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

Model G0728–31 (Mfg. Since 11/11)

-13-

Site Considerations

Weight Load

Physical Environment

Place this machine near an existing power source.

Shadows, glare, or strobe effects that may distract

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.

or impede the operator must be eliminated.

-14-

68"

Figure 7. Minimum working clearances.

Models G0728–31 (Mfg. Since 11/11)

48"

Moving & Placing

2. Use a 1⁄2" wrench to unbolt the mill from the

pallet.

Base Unit

The vertical mill is a
heavy machine. Serious
personal injury may
occur if safe moving
methods are not used.
To be safe, get assis­tance and use power
equipment rated for at
least 1500 lbs. to move
the shipping crate and
remove the machine
from the crate.

To move and place this mill:

1. After removing the crate from the shipping

pallet, wrap lifting straps around the turret, as
shown in Figure 8, and securely attach them
to your power lifting equipment.

3. With assistance to steady the machine, move
it as close to the prepared location as pos­sible.

4. Lift it just enough to clear the pallet and any
floor obstacles, then situate it in its final posi­tion.

5. When mounting the machine to the floor, use
a precision level to make sure the table is
level from side to side and front to back.

Note: If necessary, use shims to make sure

there are no gaps between the base and the
floor to avoid cracking or warping the cast
iron.

Lifting Straps

Turret

Figure 8. Positioning the lifting straps.

Model G0728–31 (Mfg. Since 11/11)

-15-

Anchoring the machine to the floor prevents it
from tipping or shifting and reduces any vibration
that may occur during operation, resulting in a
machine 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.

Anchoring to Floor

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.

Anchoring to Concrete Floors

NOTICE

Anchor studs are stronger and more per­manent alternatives to lag shield anchors;
however, they will stick out of the floor,
which may cause a tripping hazard if you
decide to move your machine.

Using Machine Mounts

Using machine mounts, shown in Figure 10, gives
the advantage of fast leveling and vibration reduc­tion. The large size of the foot pads distributes
the weight of the machine to reduce strain on the
floor.

Lag Screw

Machine Base

Concrete

Figure 5. Popular method for anchoring

machinery to a concrete floor.

-16 -

Flat Washer

Lag Shield Anchor

Drilled Hole

Figure 10. Machine mount example.

Models G0728–31 (Mfg. Since 11/11)