Grizzly T27305 User guide

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Page 1

MODEL T27305

8" VARIABLE-SPEED GRINDER

OWNER'S MANUAL

(For models manufactured since 02/16)

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

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

#BBBL17320 PRINTED IN CHINA

V3.03.16

Page 2

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.

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Table of Contents

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

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

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

Controls & Components ............................................................................................................. 3

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

SECTION 1: SAFETY ....................................................................................................................... 5

Safety Instructions for Machinery ............................................................................................... 5

Additional Safety for Grinders .................................................................................................... 7

SECTION 2: POWER SUPPLY ........................................................................................................ 8

SECTION 3: SETUP ....................................................................................................................... 10

Needed for Setup ..................................................................................................................... 10

Unpacking ................................................................................................................................ 10

Inventory ................................................................................................................................... 11

Site Considerations .................................................................................................................. 12

Bench Mounting ....................................................................................................................... 12

Assembly .................................................................................................................................. 13

Test Run ................................................................................................................................... 15

SECTION 4: OPERATIONS ........................................................................................................... 16

Operation Overview.................................................................................................................. 16

Workpiece Inspection ............................................................................................................... 17

Wheel Selection ....................................................................................................................... 17

Wheel Care .............................................................................................................................. 18

Wheel Inspection ...................................................................................................................... 18

Wheel Dressing ........................................................................................................................ 19

Wheel Removal & Installation .................................................................................................. 19

SECTION 5: ACCESSORIES ......................................................................................................... 21

SECTION 6: MAINTENANCE......................................................................................................... 23

Schedule .................................................................................................................................. 23

Grinding Wheels ....................................................................................................................... 23

Cleaning & Protecting .............................................................................................................. 23

Wheel Dressing ........................................................................................................................ 23

Wheel Storage.......................................................................................................................... 23

SECTION 7: SERVICE ................................................................................................................... 24

Troubleshooting ........................................................................................................................ 24

SECTION 8: WIRING ...................................................................................................................... 26

Wiring Safety Instructions ........................................................................................................ 26

Wiring Diagram......................................................................................................................... 27

Wiring Components .................................................................................................................. 28

SECTION 9: PARTS ....................................................................................................................... 29

WARRANTY & RETURNS ............................................................................................................. 33

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INTRODUCTION

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.

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

Contact Info

and manufacture date from the

Grizzly Technical Support

1815 W. Battlefield Springfield, MO 65807 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

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Model T27305 (Mfd. Since 02/16)

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Controls & Components

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

Refer to Figure 1 and the following descriptions to become familiar with the basic controls of this machine.

Figure 1. T27305 controls and components.

using machine.

A. Wheel Guard: Prevents accidental contact

with grinding wheel, and contains sparks during grinding.

B. Spark Deflector: Reduces amount of sparks

spraying back towards the operator.

C. Work Lamp ON/OFF Switch: Turns work

lamp ON or OFF.

D. Safety Shield: Acts as a protective barrier

against sparks during grinding operations. This shield is not a substitute for personal protective equipment.

F. ON/OFF Switch: Turns motor ON when

flipped up; turns motor OFF when pressed down.

G. ON/OFF Switch Disabling Key: Disables

switch when orange key is removed so motor cannot start.

H. Coolant Tray: Allows you to cool workpieces.

Fill tray halfway with appropriate coolant, such as water.

I. Variable-Speed Dial: Controls grinding

wheel speed. Turn clockwise to increase speed; turn counterclockwise to decrease speed.

J. Tool Rest (Left): Provides flat surface to

rest workpiece during operation. Includes a V-groove for controlling angle of contact with grinding wheel.

E. Tool Rest (Right): Provides flat surface to

rest workpiece during operations.

Model T27305 (Mfd. Since 02/16)

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Machine Data Sheet

MACHINE DATA

SHEET

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

MODEL T27305 8" VARIABLE‐SPEED GRINDER WITH LIGHT

Product Dimensions:

Weight................................................................................................................................................................ 41 lbs.

Width (side-to-side) x Depth (front-to-back) x Height............................................................... 17 x 12-3/4 x 14-1/4 in.

Footprint (Length x Width)................................................................................................................... 7-3/4 x 5-1/4 in.

Shipping Dimensions:

Type............................................................................................................................................................. Cardboard

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

Weight................................................................................................................................................................ 44 lbs.

Length x Width x Height....................................................................................................................... 22 x 15 x 12 in.

Electrical:

Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz

Full-Load Current Rating.......................................................................................................................................... 5A

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

Connection Type...................................................................................................................................... Cord & Plug

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

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

Plug Included.......................................................................................................................................................... Yes

Included Plug Type................................................................................................................................... NEMA 5-15

Switch Type.............................................................................................................. Toggle ON/OFF w/Disabling Key

Motors:

Main

Type..................................................................................................................................................... Induction

Horsepower............................................................................................................................................. 3/4 HP

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

Amps.............................................................................................................................................................. 5A

Speed...................................................................................................................................... 2000–3400 RPM

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

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

Main Specifications:

Operation Info

Grinder Type......................................................................................................................................... Abrasive

Wheel Type.............................................................................................................................. Aluminum Oxide

Right Wheel Grinding Face Width............................................................................................................... 1 in.

Left Wheel Grinding Face Width.................................................................................................................. 1 in.

Wheel Bore............................................................................................................................................... 5/8 in.

Wheel Speed at Maximum Wheel Diameter............................................................................ 2000-3400 RPM

Construction

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

Work Rest.................................................................................................................................. Cast Aluminum

Eye Shields.................................................................................................................................. Polycarbonate

Lamp........................................................................................................................................... Plastic & Steel

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Model T27305 (Mfd. Since 02/16)

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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-

Model T27305 (Mfd. Since 02/16)

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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.

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Model T27305 (Mfd. Since 02/16)

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Additional Safety for Grinders

Serious injury or death can occur from impact injuries. Rotating grinding wheels can easily remove skin, or entanglement/amputation injuries can occur from being caught in moving parts or in-running pinch points. Flying sparks can ignite explosive or flammable materials. To minimize risk of getting hurt or killed, anyone operating machine MUST completely heed hazards and warnings below.

SAFE MOUNTING & WORK AREA. An unse-

cured grinder may become dangerously out of control during operation. Before use, verify grinder is FIRMLY secured in a location free of explosive or flammable materials.

STARTING GRINDER. If a wheel is damaged,

it will usually fly apart shortly after start-up. To protect yourself, always stand to side of grinder when turning it ON and allow it to run for at least one minute before standing in front of it.

VISUAL INSPECTION. Verify that grinding wheels are free of cracks, chips, or dents in wheel surface before installing. Do not use wheel if it has any of these problems or it could break apart during operation.

RING TEST. Perform a “ring test” on grinding

wheels before installation to ensure they are safe to use. A wheel that does NOT pass ring test may break or fly apart during operation.

WHEEL SPEED RATING. Wheels oper-

ated at a faster speed than rated for may break apart during operation. Before mounting a new wheel, be sure wheel RPM rating is equal or higher than speed of grinder. Never use unmarked wheels.

VIBRATING WHEEL. Never use a wheel that vibrates. Replace wheel or shaft bearings immediately.

SPARK DEFLECTOR GAP. Keep gap between end of spark deflector and grinding wheel

between

⁄8 ” and 1⁄4”. If the gap is larger, excessive sparks and abrasives can be expelled toward the operator.

SPINDLE NUT. Only tighten wheel spindle nut enough to drive wheel and prevent slippage.

EYE SHIELDS. Place eye shields close to grinding wheel and re-adjust as wheel wears down.

TOOL REST POSITION. If tool rest is too far away from wheel, workpiece may be pulled down, causing loss of control and pulling your hand into

grinding wheel. Keep tool rest within

⁄8” from

wheel when operating. Replace grinding wheel

when tool rest gap is wider than

⁄8 ” and no addi-

tional adjustment can be made.

HAND & WHEEL CONTACT. Keep a firm grip on workpiece and position your hands a safe distance away when grinding. Anticipate when workpiece will heat up, and cool it before it becomes too hot to hold, or use an appropriate clamp. Avoid wearing gloves as they may get caught in grinding wheel and cause even more serious entanglement injuries.

WHEEL FLANGES. Only use flanges included with grinder when mounting wheels. Other flanges may not properly secure wheel and cause an accident. Do not use warped or damaged flanges, and always use paper discs (blotters) between wheels and flanges to reduce risk of flanges cracking wheel when tightened.

EYE, FACE, & LUNG PROTECTION. Grinding ejects small particles at a high rate of speed. These particles can cause blindness, skin injuries or respiratory damage. ALWAYS wear approved clothing, safety goggles, face shield, and a respirator for type of grinding to be done.

SIDE & TOP GRINDING. Grinding on side of wheels can cause them to crack and burst— unless wheel is rated for side grinding. Grinding on top of wheels greatly increases risk of workpiece kickback. Always grind on downward part of wheel.

Model T27305 (Mfd. Since 02/16)

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Page 10

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 electrician 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 specified circuit requirements.

For your own safety and protection of

Note: Circuit requirements in this manual apply to

a dedicated circuit—where only one machine will be running on the circuit at a time. If machine will be connected to a shared circuit where multiple machines may be running at the same time, consult an electrician or qualified service personnel to ensure 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 is prewired to operate on a power supply circuit that has a verified ground and meets the following requirements:

Availability

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

120V Circuit Requirements

Nominal Voltage ........................................120V

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

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

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

supply.

Full-Load Current Rating

Full-Load Current Rating at 120V ....... 5 Amps

-8-

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

Model T27305 (Mfd. Since 02/16)

Page 11

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 can 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 be in good condition and contain a ground wire and matching plug/receptacle. Additionally, it must meet the following size requirements:

Grounding & Plug Requirements

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

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.

This machine is equipped with a power cord that has an equipment-grounding wire and a grounding plug. Only insert plug into a matching receptacle (outlet) that is properly installed and grounded in accordance with all local codes and ordinances. DO NOT modify the provided plug!

GROUNDED

5-15 RECEPTACLE

Grounding Prong

5-15 PLUG

Extension Cords

If you must use an extension

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.

Model T27305 (Mfd. Since 02/16)

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

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

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Page 12

SECTION 3: SETUP

This machine was carefully packaged for safe transport. When unpacking, separate all enclosed items from packaging materials and inspect them for shipping damage.

please

IMPORTANT:

you are completely satisfied with the machine and have resolved any issues between Grizzly or the shipping agent. You MUST have the original pack-

aging to file a freight claim. It is also extremely helpful if you need to return your machine later.

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

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!

call us immediately at (570) 546-9663.

Unpacking

If items are damaged

Save all packaging materials until

Needed for Setup

The following are needed to complete the setup process:

Description Qty

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

• Mounting Hardware (Page 12) ... As Needed

• Fine Ruler ................................................... 1

• Phillips Screwdriver #2 ............................... 1

SUFFOCATION HAZARD!

machine. Discard immediately.

-10 -

Model T27305 (Mfd. Since 02/16)

Page 13

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.

Fasteners (Figure 4) Qty

K. Fender Washers 5mm ................................ 2

L. Lock Washers 5mm.................................... 2

M. Lock Washers 6mm.................................... 2

N. Flat Washers 6mm ..................................... 4

O. Knobs M6-1 ................................................ 2

P. Knob Bolts M6-1 x 18 ................................. 2

Q. Carriage Bolts M5-.8 x 50 .......................... 2

R. Carriage Bolts M6-1 x 12 ............................ 2

S. Phillips Head Screws M4-.7 x 12 ................ 4

T. Flange Nuts M4-.7 ...................................... 4

U. Phillips Head Screws M5-.8 x 10

w/Washers .................................................. 4

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.

Box 1 (Figure 3) Qty

A. Grinder (Not Shown) ................................... 1

B. Safety Shields ............................................ 2

C. Tool Rest (Left) ........................................... 1

D. Tool Rest (Right) ......................................... 1

E. Tool Rest Bracket (Left) .............................. 1

F. Tool Rest Bracket (Right) ........................... 1

G. Safety Shield Mounting Brackets ............... 2

H. Safety Shield Clamping Plates ................... 2

I. Spark Deflector (Left) ................................. 1

J. Spark Deflector (Right) ............................... 1

Figure 4. Fastener inventory.

O P

Figure 3. Tool rest and safety shield parts.

Model T27305 (Mfd. Since 02/16)

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Page 14

Site Considerations

or disable start switch or

Refer to the Machine Data Sheet for the weight and footprint specifications of your machine. Some workbenches may require additional reinforcement to support the weight of the machine and workpiece materials.

Consider anticipated workpiece sizes and additional space needed for auxiliary stands, work tables, or other machinery when establishing a location for this machine in the shop. Below is the minimum amount of space needed for the machine.

Another option is a "Direct Mount" (see example below) where the machine is secured directly to the workbench with lag screws and washers.

The base of this machine has mounting slots that allow it to be fastened to a workbench or other mounting surface to prevent it from moving during operation and causing accidental injury or damage.

The strongest mounting option is a "Through Mount" (see example below) where holes are drilled all the way through the workbench—and hex bolts, washers, and hex nuts are used to secure the machine in place.

Bench Mounting

Workbench Load

Placement Location

⁄4"

Number of Mounting Slots ............................. 2

Diameter of Mounting Hardware Needed ..

Hex Bolt

Flat Washer

Machine Base

⁄2"

17"

Figure 5. Minimum working clearances.

Children and visitors may be seriously injured if unsupervised around this machine. Lock entrances to the shop

power connection to prevent unsupervised use.

Workbench

Flat Washer

Lock Washer

Hex Nut

Figure 6. "Through Mount" setup.

Lag Screw

Flat Washer

Machine Base

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Workbench

Figure 7. "Direct Mount" setup.

Model T27305 (Mfd. Since 02/16)

Page 15

Assembly

The Model T27305 comes mostly assembled from the factory. Using the hardware from the Inventory list on Page 11, complete the assembly by attaching the tool rest and safety shield.

To assemble grinder:

3. Then attach spark deflector/safety shield

assemblies to grinder with (4) M5-.8 x 10 Phillips head screws with washers (see Figure 10).

1. Assemble safety shields using (4) M4-.7 x 12 Phillips head screws, (4) M4-.7 flange nuts, (2) safety shield clamping plates, (2) safety shields, and (2) safety shield mounting brackets (see Figure 8).

Safety Shield

Mounting Bracket

Figure 8. Safety shield assembly (1 of 2).

2. Attach safety shield assemblies to spark

deflectors using (2) M6-1 x 12 carriage bolts, (2) 6mm flat washers, (2) 6mm lock washers, and (2) M6-1 knobs (see Figure 9).

Safety Shield

Assembly

Safety Shield Clamping Plate

Phillips

Head Screws

Flange Nuts

Lock

Washer

Phillips Head

Screws

Figure 10. Spark deflector and safety shield

attached to grinder.

4. Assemble left tool rest using (1) left tool rest bracket, (1) left tool rest, (1) 6mm flat washer, and (1) M6-1 x 18 knob bolt (see Figure 11).

5. Assemble right tool rest using (1) right tool rest bracket, (1) right tool rest, (1) 6mm flat washer, and (1) M6-1 x 18 knob bolt (see Figure 11).

Tool Rest

Bracket

Flat

Washer

Knob

Bolt

Carriage

Bolt

Spark

Deflector

Figure 9. Safety shield attached to spark

deflectors (1 of 2).

Model T27305 (Mfd. Since 02/16)

Knob

Flat

Washer

Figure 11. Example tool rest assembly (left).

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Page 16

6. Attach tool rest assemblies to grinder using (2) M5-.8 x 50 carriage bolts, (2) 5mm fender washers, (2) 5mm lock washers, and (2) M5-.8 knobs (see Figure 12).

x 2

Figure 12. Model T27305 fully assembled.

NEVER grind without tool rest in place and properly positioned. "Free hand" grinding or too large of a gap between wheel and tool rest increases risk of kickback, which may lead to serious injury.

Some grinding wheels must be replaced before spark deflector or tool rest reach their final adjustment. As diameter of a grinding wheel is reduced, so is available surface speed. Grinding under these conditions can lead to faster abrasive loss and poor grinding results. Always follow wheel manufacturer's directions.

Tool Rest Adjustment

The tool rest stabilizes the workpiece when grinding. It must always be positioned correctly when using the grinder, to avoid workpiece and possibly operator's hands from being pulled into grinding wheel.

As the grinding wheel wears, adjust the tool rest closer to the grinding wheel to maintain a gap

⁄16" –1⁄8" (see Figure 13). If the gap reaches

⁄8" and no additional adjustments can be made,

replace the grinding wheel.

1⁄16" –1⁄8"

Spark Deflector Adjustment

The spark deflector prevents sparks from showering the top of the workpiece and the operator's hands. As the wheel wears, adjust the spark deflector closer to the grinding wheel to maintain a gap of reaches made, replace the grinding wheel.

⁄8" –1⁄4" (see Figure 14). If the gap

⁄4" and no additional adjustments can be

⁄8" –1⁄4"

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Figure 13. Tool rest gap.

Figure 14. Spark deflector gap.

Model T27305 (Mfd. Since 02/16)

Page 17

Test Run

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

table in the

SERVICE section of this manual can help.

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

ed results that can lead to serious injury,

Serious injury or death can result from

Troubleshooting

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.

To test run machine:

1. Clear all setup tools away from machine.

2. Connect machine to power supply.

3. Turn machine ON, verify motor operation,

and then turn machine OFF.

The motor should run smoothly and without

unusual problems or noises.

Note: A small amount of vibration during

operation is normal.

4. Remove key from toggle switch, as shown below.

may result in malfunction or unexpect-

death, or machine/property damage.

Model T27305 (Mfd. Since 02/16)

Figure 15. Removing key from toggle switch.

5. Try to start machine with switch. Machine

should NOT start.

— If it does start, the switch disabling feature

is not functioning properly and the switch must be replaced.

-15-

Page 18

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.

Wear personal protective equipment to

Keep hair, clothing, and

ing parts at all times. Entanglement can result in death, amputation, or

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

Operation Overview

machine controls/components

are easier to understand.

seek additional training from expe-

machine operators, and do additional

using machine.

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

1. Examines workpiece to make sure it is suit-

able for grinding.

2. Selects correct grinding wheel for type of workpiece grinding, inspects wheel, performs a "ring test," and installs wheel.

3. Verifies/adjusts tool rest position so it is perpendicular to grinding wheel and gap is

⁄8", and verifies/adjusts spark deflector and

to wheel gap is between

4. Positions safety shield for safe grinding.

5. Ensures that ON/OFF switch is in OFF posi-

tion, and connects grinder to power.

6. Puts on personal protective equipment.

7. Stands aside, starts grinder and allows it to

reach full speed and operate for at least one minute to ensure grinding wheel does not fly apart from the centrifugal force of rotation.

⁄8" to 1⁄4".

⁄16"

Eye and face injuries and respiratory problems can occur while operating this tool.

reduce your risk from these hazards.

-16 -

jewelry away from mov-

severe crushing injuries!

8. Places workpiece on tool rest and positions it

for grinding.

9. Operator gradually feeds workpiece into grinding wheel and moves workpiece left and right to prevent grooves in wheel.

10. Quenches workpiece as required to prevent surface hardening or temper loss.

11. Stops bench grinder.

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 T27305 (Mfd. Since 02/16)

Page 19

Workpiece Inspection

Some workpieces are not suitable for grinding on a bench grinder. Before grinding, inspect all

workpieces for the following:

• Hard Workpiece: Workpieces that are made of stone, carbide, stainless steel, ceramics, glass, or have hardened welds will wear out most general-grade grinding wheels quickly. If hard materials are to be ground, you must install the correct type of grinding wheel.

Wheel Selection

The Model T27305 only accepts Type 1 wheels with a

Aluminum oxide and silicon carbide wheels are marked in a somewhat uniform manner by all the major manufacturers. Understanding these markings will help you understand the capabilities of various wheels. Always refer to the manufacturer’s grinding recommendations when selecting a wheel for your project.

The basic format for wheel numbering is:

⁄8" bore.

• Soft Workpiece: Workpieces that are made of aluminum, brass, lead, and other nonferrous metals will load up in the grinding wheel and render the abrasive useless. Grinding wood, plastics, rubber, fiberglass, or other soft materials can also cause the same problem and lead to the wheel overheating and possibly bursting during use if ignored. To restore a loaded grinding wheel surface, redress with a dressing tool.

• Flexible/Unstable Workpiece: Grinding on the side or the ends of cable, chain, or round workpieces creates the hazard of workpiece twist or grab, leading to entanglement with the wheel or shaft. This hazard must be avoided.

• Loose Parts: Make sure that the workpiece is free of any parts like springs, pins, balls, or other components that may loosen or dislodge during grinding, and hit the operator.

• Strength: Make sure that the workpiece is strong enough to be ground. Should it break, the broken piece may dig into the wheel and cause kickback or severe injury.

Prefix

The Prefix is the manufacturer’s designation for a particular wheel type (e.g. Type 1 wheels).

The most common Abrasive Types used are A for Aluminum Oxide, C for Silicon Carbide, and occasionally SG for Seeded Gel.

The Grit Size is a number that refers to the size of the abrasive grain in the wheel. The lower the number, the coarser the wheel. Ten is a very coarse wheel for roughing and 220 is usually the upper range for fine finish work.

Grade is an indication of the hardness of the wheel—“A” being the softest and “Z” being the hardest.

Bond Type refers to the type of bonding material used to hold the abrasive material. Most general purpose wheels will have a “V” indicating Vitrified Clay is used. Vitrified Clay provides high strength and good porosity. The other common bond type is “B” for resin where synthetic resins are used. These are used to grind cemented carbide and ceramic materials.

Abrasive

Type

1 A 60 L V

Grit Size Grade

Bond

Type

Electrical system is not waterproof. DO NOT use grinder with liquid cooling system for wet grinding. Ignoring warning can lead to electrocution or machine damage.

Model T27305 (Mfd. Since 02/16)

Note: There may be other numbers inserted that have meaning for a particular type of wheel. Refer to the manufacturer’s technical data for a complete explanation.

-17-

Page 20

Wheel Care

Wheel Inspection

When grinding, your safety depends, to a large degree, on the condition of the wheel. A wheel in poor condition presents the possibility of breaking apart during rotation and injuring the operator and others in the area.

Here are some tips to help you avoid breaking the wheel:

• Always transport, store and handle wheels with care. Wheels may be damaged if they are dropped or if heavy objects are stacked on them.

• Select the right grinding wheel for the job. DO NOT grind material inappropriate for the wheel type.

• Only use wheels that are rated for the RPM of the tool grinder.

• Mount the wheel properly (see Wheel Removal & Installation on Page 20).

• Do not push the tooling into the grinding wheel with such force that it causes the grinder to bog down. And do not apply pressure to stop the wheel after turning the grinder OFF.

• Dress the wheel when necessary. Do not allow it to become glazed (see Wheel Dressing on Page 19).

• Do not store wheels in damp or wet locations.

Before mounting a new grinding wheel, it must be inspected. Do not assume that a wheel is in sound condition just because it is new—often damage can occur in shipping, with age, or with exposure to moisture.

First, do a Visual Inspection. Look for any cracks, chips, nicks or dents in the surface of the wheel. If you see any of these, DO NOT use the wheel.

Second, do a Ring Test. This test will give you an indication of any internal damage that may not be obvious during a visual inspection.

To perform ring test:

1. Make sure grinding wheel is clean and dry;

otherwise, you may get false results.

2. If size permits, balance grinding wheel with a screw driver through mounting hole. If this is not possible, hang wheel in air with a piece of cord or string looped through mounting hole in center.

3. At spots shown in Figure 16, gently tap grind- ing wheel with a light non-metallic device such as handle of a screwdriver or a wooden mallet.

Note: Finding exact spot to tap may take sev-

eral attempts.

• Do not overtighten the nut when mounting the wheel.

• Do not leave the wheel mounted when machine is not in use.

-18-

STOP

Rated 3500 RPM

Make sure your grinder is not

faster than the rated RPM of this wheel

Type-1

Aluminum

Oxide

Grinding can be dangerous Visually inspect this wheel

for cracks, nicks,chips

WARNING

60 Grit

Grade L

Vitrified Bond

Figure 16. Tapping locations when performing a

ring test.

Model T27305 (Mfd. Since 02/16)

Page 21

4. An undamaged grinding wheel will emit a clear metallic ring or “ping” sound in each of these spots. A damaged grinding wheel will respond with a dull thud that has no clear tone.

— If you determine from ring test that grind-

ing wheel is damaged, DO NOT use it!

Wheel Dressing

Depending on the type of grinding you do, the grinding wheel may require periodic dressing.

Wheel Removal &

Installation

ALWAYS visually inspect and perform a “ring test” on a wheel before assembly. DO NOT use damaged wheels!

To remove and install grinding wheel:

1. DISCONNECT MACHINE FROM POWER!

There are several different types of wheel dressing devices available on the market (see Page 21 for examples). Dressing restores the abrasive quality of the wheel surface and brings the wheel edge back to a square form.

Refer to the instructions that accompany your dressing accessory for complete details on how to properly dress the wheel.

Always adjust tool rest and spark deflector after dressing or replacing grinding wheel. Failure to do so could lead to workpiece kickback and injury.

2. Remove outer guard by removing (2) M5-.8 x

50 Phillips head screws and (2) M5-.8 flange nuts, and (1) M5-.8 knob, (1) 5mm exterior tooth washer, (1) 5mm fender washer, and (1) M5-.8 x 50 carriage bolt that secure outer guard (see Figure 17).

Outer

Guard

Figure 17. Location of outer guard hardware that

must be removed when removing wheel.

Model T27305 (Mfd. Since 02/16)

-19 -

Page 22

3. Remove M16-2 hex nut (see Figure 18).

Tip: Hold grinding wheel with free hand to

stop it from turning while loosening the hex nut.

Note: Spindle on left side of grinder has left-

hand threads. Turn it clockwise to loosen.

Outer Grinding

Wheel Flange

Paper

Disc

M16-2 Hex Nut

Figure 18. Outer wheel guard removed.

4. Remove outer grinding wheel flange and

paper disc.

NEVER assemble grinding wheel on spindle without paper or fiber discs between wheel and flange. Not using discs can put stress on wheel, causing it to crack and possibly fly apart.

7. Mount new grinding wheel in order shown

in Figure 19. Tighten M16-2 hex nut snugly but do not over-tighten. Over-tightening can stress and crack wheel.

Paper Discs

5. Remove grinding wheel from spindle. Take note of paper or fiber disc between wheel flanges and wheel. These cushion the pressure of the wheel flanges and help distribute pressure more evenly. They also help reduce damage to the flanges.

6. Verify flatness of inner and outer flanges by placing them on a level surface. If either flange is warped or damaged, replace it.

Warped wheel flanges can contribute to grinding wheel breaking and flying apart. Never use warped wheel flanges. Always check flanges before re-installing grinding wheel.

Figure 19. Assembly order for wheel installation.

8. Re-assemble outer wheel guard using hard- ware removed in Step 2.

9. While standing away from line of rotation,

turn grinder ON and run new grinding wheel for at least 1–2 minutes before standing in front of it. This helps protect you if the wheel has internal damage that will cause it to fly apart from the centrifugal force of rotation.

— If grinder runs smoothly, grinding wheel

may now be used.

— If wheel appears to wobble, grinder

vibrates excessively, or any other unsafe condition appears with new wheel, stop grinder and refer to Troubleshooting on Page 24.

-20-

Model T27305 (Mfd. Since 02/16)

Page 23

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.

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

T20502

Model H5944—#0 Wheel Dresser Model H5945—#1 Wheel Dresser Model H5946—#2 Wheel Dresser

Exposes new grains for aggressive cutting on all types of grinding wheels. Star wheels and discs are hardened steel. Cast iron handle provides stabilizing mass for better control.

Figure 21. Rotary-type dressing tools.

H5891— H5892—

Industrial diamond for dressing grinding wheels.

⁄4" long round body with knurled grip for maxi-

8 mum control. Includes protective rubber end cap.

⁄2 Carat Diamond Dresser

⁄4 Carat Diamond Dresser

T20452

T20503

H7194

Figure 20. Assortment of basic eye protection.

Model T27305 (Mfd. Since 02/16)

T20451

H5892

Figure 22. Diamond dressing tools.

H5891

-21-

Page 24

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

D3744—Diamond Dresser with Handle

This 0.25 carat Diamond Dresser makes trueing abrasive grinding wheels fast and easy while exposing a fresh surface for efficient grinding operations. Simply guide the Diamond Dresser against the grinder's tool rest to restore the wheel back to its original condition. Overall length is

⁄2 " long with a 33⁄4" long handle. The industrial

8 diamond measures 0.25 carat.

Figure 23. Diamond dresser with handle.

Grinding Wheels

G7424—8" x 1", 24 Grit G7425—8" x 1", 36 Grit G7426—8" x 1", 46 Grit G7427—8" x 1", 60 Grit

These Aluminum Oxide bench grinding wheels measure 8" x 1" and include a nested bushings adjust to

⁄2 "-11⁄4" bore. The

⁄2 ", 5⁄8", 3⁄4" and 1".

D2056—Tool Table

Get that bench-top tool off your bench and put it on this sturdy stand instead! Flared legs and adjustable rubber feet ensure stability and reduce machine vibration. Butcher block finish table top

measures 1" x 13" x 23" and is 30

⁄2 " from the floor. Bottom measures 21" x 32". 700 lb. capacity!

Figure 25. Tool table.

T23248—Fundamentals of Sharpening Book

This book contains techniques for keeping hand tools like saws, chisels, gouges, and planes razor sharp. It also shows how to extend the life of power tools with well maintained blades and bits. 120 pages.

Figure 26. T23248 Fundamentals of Sharpening

Book.

Figure 24. 8" x 1" aluminum oxide grinding

wheels.

-22-

Model T27305 (Mfd. Since 02/16)

Page 25

SECTION 6: MAINTENANCE

accidental startup, always disconnect machine from

Cleaning &

To reduce risk of shock or

power before adjustments, maintenance, or service.

Schedule

For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section.

Daily Check

• Loose mounting bolts.

• Cracked or loose grinding wheel.

• Worn or damaged wires.

• Any other unsafe condition.

Grinding Wheels

Protecting

Cleaning the Model T27305 is relatively easy. Vacuum excess debris, and wipe off the remaining dust with a dry cloth.

Wheel Dressing

Depending on the type of grinding you do, the grinding wheel may require periodic dressing.

Several different kinds of wheel dressing devices are available. Dressing restores the abrasive quality of the wheel surface and squares up the wheel edge.

Refer to the instructions that accompany your dressing accessory for complete details on how to properly dress a wheel.

The grinding wheels should be inspected before every use. Use the ring test method noted in Wheel Inspection on Page 18 to verify the structural integrity. Take care in storing grinding wheels to keep them free from potential damage by being dropped or having other items drop on them.

Replace the wheel when the spark deflector or tool rest has no more adjustment and the gap has exceeded the safe limit.

Model T27305 (Mfd. Since 02/16)

Wheel Storage

Grinding wheels can be easily damaged, so it is important to store them properly. Follow all wheel manufacturer storage instructions. Always store grinding wheels in a location that is dry and protected from potential damage due to them being dropped or having other items dropped on them. Also, avoid storing grinding wheels where there is high humidity, extreme heat or cold, or solvents.

-23-

Page 26

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.

gather 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.

Machine has vibration or noisy operation.

1. Switch disabling key removed.

2. Incorrect power supply voltage or circuit size.

3. Blown fuse.

4. Power supply circuit breaker tripped or fuse blown.

5. Motor wires connected incorrectly.

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

7. Circuit board at fault.

8. Motor at fault.

1. Machine undersized for task.

2. Motor wired incorrectly.

3. Motor overheated.

4. Run capacitor at fault.

5. Motor bearings at fault.

1. Machine incorrectly mounted to workbench or ﬂoor.

2. Motor or component loose.

3. Grinding wheel at fault/arbor hole not round.

4. Motor bearings at fault.

5. Motor shaft bent.

1. Install switch disabling key.

2. Ensure correct power supply voltage and circuit size.

3. Replace fuse/ensure no shorts.

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

5. Correct motor wiring connections.

6. Test/replace.

7. Inspect/replace.

8. Test/repair/replace.

1. Use new grinding/bufﬁng wheel; reduce the feed rate.

2. Wire motor correctly.

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

4. Test/repair/replace.

5. Test/repair/replace.

1. Adjust feet, shim, or tighten mounting hardware.

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

3. Dress/replace grinding wheel.

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

5. Test with dial indicator and replace motor.

Note: Please

-24-

Model T27305 (Mfd. Since 02/16)

Page 27

Operation

Symptom Possible Cause Possible Solution

Machine slows when

operating.

Wavy condition on surface of workpiece.

Lines on surface of workpiece.

Burning spots or cracks in the workpiece.

Wheel dulls quickly, grit falls off.

1. Operator is using too much pressure.

2. RPM too low.

1. Machine vibrating.

2. Workpiece not being held ﬁrmly.

3. Wheel face uneven.

4. Wheel is too hard.

1. Impurity on wheel surface.

2. Workpiece not being held tightly.

1. Improper type of grinding wheel.

2. Improper feed rate.

3. Workpiece requires quenching.

1. Depth of cut too great.

2. Wheel is too soft.

3. Wheel diameter too small.

4. Bad wheel dress.

5. Defective wheel bonding.

1. Use less pressure when grinding.

2. Adjust RPM.

1. Make sure machine is securely mounted on a solid surface.

2. Use a holding device to ﬁrmly retain the workpiece.

3. Dress the grinding wheel.

4. Use softer wheel, or reduce the feed rate.

1. Dress the grinding wheel.

2. Use a holding device to ﬁrmly retain the workpiece.

1. Try a wheel which is softer style or a coarser grit.

2. Slow down the rate of movement of the workpiece into wheel.

3. Quench workpiece in water to cool.

1. Slow down the rate of movement of the workpiece

into wheel.

2. Wheel too soft for the material being ground, select harder bond.

3. Replace the wheel.

4. Dress the wheel.

5. Consult manufacturer of grinding wheel.

Model T27305 (Mfd. Since 02/16)

-25-

Page 28

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.

-26-

Model T27305 (Mfd. Since 02/16)

Page 29

120 Volt Motor

Wiring Diagram

Run

Capacitor

45MFD

250VAC

Ground

Rotation Sensor

Speed Control Potentiometer

B103

Safety Switch

KEDU HY7

Switch Panel

(Viewed from Back)

R27

E123995

T2/M

T1/M

T10AL/250V

T4/L

T2/N

Grinder Base

(Viewed from Bottom)

The motor wiring shown here is current at the time of printing, but it may not match your machine. Always use the wiring diagram inside the motor junction box.

Model T27305 (Mfd. Since 02/16)

Circuit Board Box

(Viewed from Top)

Hot

Neutral

Ground

120 VAC

5-15 Plug

(Pre-Wired)

READ ELECTRICAL SAFETY

ON PAGE 26!

-27-

Page 30

Speed Control

Dial

Run Capacitor

Wiring Components

Safety Switch

Motor

Circuit Board

Figure 27. T27305 wiring components.

-28-

READ ELECTRICAL SAFETY

ON PAGE 26!

Model T27305 (Mfd. Since 02/16)

Page 31

SECTION 9: PARTS

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here

are available for purchase. Call (800) 523 - 4777 or visit our online parts store at www.grizzly.com to check for availability.

Specifications

Motor: 3/4 HP, 120V, 1-Ph, 60 Hz

Full-Load Current Rating: 5A

Motor Speed: 2000–3400 RPM

Grinding Wheel Size: 8" x 1"

Arbor Size: 5/8"

Weight: 41 lbs.

To reduce the risk of serious personal injury while using this machine:

1. Read and understand owner’s manual before operating.

2. Always wear approved eye protection and respirator.

3. Tie back long hair, roll up sleeves, and DO NOT wear loose clothing, gloves or jewelry.

4. Only use grinding wheels suitable for speed of grinder.

5. Always use tool rest & hold workpiece firmly with both hands when grinding.

6. Stand to side of grinder during start-up.

7. Securely mount machine to stable workbench or stand before starting.

8. Disconnect power before changing grinding wheels, adjusting, or servicing.

9. Always operate with guards and eye shields installed.

10. DO NOT expose to rain or use in wet locations.

11. DO NOT operate under influence of drugs or alcohol or when tired.

12. Prevent unauthorized use by children or untrained users; restrict access or disable machine when unattended.

MODEL T27305

8" VARIABLE-SPEED

BENCH GRINDER

WARNING!

Serial Number

Mfd. for Grizzly in China

Date

49 46

21 20

76 50

Model T27305 (Mfd. Since 02/16)

-29-

Page 32

REF PART # DESCRIPTION REF PART # DESCRIPTION

1 PT27305001 PHLP HD SCR M4-.7 X 6 W/WASHER 46 PT27305046 BALL BEARING 6203ZZ 2 PT27305002 DRAWER 47 PT27305047 STATOR 3 PT27305003 CIRCUIT BOARD BOX 48 PT27305048 ROTOR 4 PT27305004 CIRCUIT BOARD E123995 49 PT27305049 MOTOR CLAMPING PLATE 5 PT27305005 TAP SCREW M3 X 6 50 PT27305050 ROTATION SENSOR 6 PT27305006 CIRCUIT BOARD BOX COVER 51 PT27305051 ROTATION SENSOR FEEDBACK WHEEL 7 PT27305007 HEX BOLT M8-1.25 X 22 W/LOCK WASHER 52 PT27305052 MOTOR END CAP (RIGHT) 8 PT27305008 HEX NUT M5-.8 53 PT27305053 KNOB M5-.8 9 PT27305009 PHLP HD SCR M5-.8 X 16 W/WASHER 54 PT27305054 PHLP HD SCR M5-.8 X 10 W/WASHERS 10 PT27305010 LOCK WASHER 5MM 55 PT27305055 SAFETY SHIELD MOUNTING BRACKET 11 PT27305011 FOOT (RUBBER) 56 PT27305056 SAFETY SHIELD 12 PT27305012 HEX NUT M8-1.25 57 PT27305057 SAFETY SHIELD CLAMPING PLATE 13 PT27305013 R CAPACITOR 45M 250V 1-1/2 X 3 58 PT27305058 PHLP HD SCR M4-.7 X 12 14 PT27305014 GRINDER BASE 59 PT27305059 SPARK DEFLECTOR (RIGHT) 15 PT27305015 STRAIN RELIEF PLATE 60 PT27305060 CARRIAGE BOLT M6-1 X 12 16 PT27305016 PHLP HD SCR M5-.8 X 8 61 PT27305061 PHLP HD SCR M5-.8 X 10 W/WASHER 17 PT27305017 STRAIN RELIEF 14MM TYPE-1 62 PT27305062 WHEEL GUARD (INNER, RIGHT) 18 PT27305018 POWER CORD 18G 3W 78" 5-15P 63 PT27305063 TOOL REST BRACKET (RIGHT) 19 PT27305019 FLANGE NUT M4-.7 64 PT27305064 TOOL REST (RIGHT) 20 PT27305020 CORD HOLDER 65 PT27305065 HEX NUT M16-2 LH 21 PT27305021 PHLP HD SCR M4-.7 X 16 66 PT27305066 KNOB BOLT M6-1 X 18 22 PT27305022 PHLP HD SCR M4-.7 X 8 W/WASHERS 67 PT27305067 KNOB M6-1 23 PT27305023 EXT TOOTH WASHER 4MM 68 PT27305068 WHEEL GUARD (OUTER, LEFT) 24 PT27305024 GROMMET 10MM (RUBBER) 69 PT27305069 WHEEL GUARD (INNER, LEFT) 25 PT27305025 POTENTIOMETER B103K 70 PT27305070 GRINDING WHEEL 8" X 1" X 5/8" 60G 26 PT27305026 SWITCH PLATE 71 PT27305071 TOOL REST BRACKET (LEFT) 27 PT27305027 SPACER 72 PT27305072 TOOL REST (LEFT) 28 PT27305028 SET SCREW M5-.8 X 10 73 PT27305073 WORK LAMP 29 PT27305029 SPEED CONTROL DIAL 74 PT27305074 FLAT WASHER 12MM 30 PT27305030 SWITCH BRACKET 75 PT27305075 HEX NUT M12-1.5 31 PT27305031 PHLP HD SCR M3-.5 X 10 76 PT27305076 TAP SCREW M3 X 6 32 PT27305032 SAFETY SWITCH KEDU HY7 ON/OFF 77 PT27305077 SET SCREW M5-.8 X 6 36 PT27305036 GRINDING WHEEL FLANGE 78 PT27305078 FLAT WASHER 6MM 37 PT27305037 GRINDING WHEEL 8" X 1" X 5/8" 36G 79 PT27305079 SPARK DEFLECTOR (LEFT) 39 PT27305039 HEX NUT M16-2 80 PT27305080 FENDER WASHER 5MM 40 PT27305040 WHEEL GUARD (OUTER, RIGHT) 81 PT27305081 FLANGE NUT M5-.8 41 PT27305041 CARRIAGE BOLT M5-.8 X 50 83 PT27305083 LOCK WASHER 6MM 42 PT27305042 PHLP HD SCR M5-.8 X 50 84 PT27305084 BULB INC 120V 40W SCREW-IN 43 PT27305043 PHLP HD SCR M5-.8 X 160 85 PT27305085 MACHINE ID LABEL 44 PT27305044 MOTOR END CAP (LEFT) 86 PT27305086 GRIZZLY GREEN TOUCH-UP PAINT 45 PT27305045 WAVY WASHER 40MM

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.

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Model T27305 (Mfd. Since 02/16)

Page 33

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: _____________________________________________________________________

_________________________________________________________________________________

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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

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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.

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