Grizzly T27305 Owner's Manual
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Grizzly T27305 Owner's Manual

8" variable-speed grinder
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MODEL T27305
8" VARIABLE-SPEED GRINDER
OWNER'S MANUAL
(For models manufactured since 02/16)
COPYRIGHT © APRIL, 2015 BY GRIZZLY INDUSTRIAL, INC. REVISED MARCH, 2016 (MN)
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

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Summary of Contents for Grizzly T27305

  • Page 1 OWNER'S MANUAL (For models manufactured since 02/16) COPYRIGHT © APRIL, 2015 BY GRIZZLY INDUSTRIAL, INC. REVISED MARCH, 2016 (MN) WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
  • 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.

  • Page 3: Table Of Contents

    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 ......................

  • Page 4: Introduction

    ID label (see below). This information is required for us to provide proper tech support, and it helps us determine if updated documenta- tion is available for your machine. Manufacture Date Serial Number Model T27305 (Mfd. Since 02/16)

  • Page 5: Controls & Components

    Controls & Components Refer to Figure 1 and the following descriptions to become familiar with the basic controls of this machine. Figure 1. T27305 controls and components. ON/OFF Switch: Turns motor ON when flipped up; turns motor OFF when pressed down.

  • Page 6: 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.

  • Page 7: Section 1: Safety

    Everyday ery. Never operate under the influence of drugs or eyeglasses are NOT approved safety glasses. alcohol, when tired, or when distracted. Model T27305 (Mfd. Since 02/16)
  • Page 8 EXPERIENCING DIFFICULTIES. If at any time debris. Make sure they are properly installed, you experience difficulties performing the intend- undamaged, and working correctly BEFORE ed operation, stop using the machine! Contact our operating machine. Technical Support at (570) 546-9663. Model T27305 (Mfd. Since 02/16)

  • Page 9: Additional Safety For Grinders

    Grinding operator. on top of wheels greatly increases risk of work- piece kickback. Always grind on downward part SPINDLE NUT. Only tighten wheel spindle nut of wheel. enough to drive wheel and prevent slippage. Model T27305 (Mfd. Since 02/16)

  • Page 10: Section 2: Power Supply

    Model T27305 (Mfd. Since 02/16)

  • Page 11: Extension Cords

    Two-prong outlets do not meet the grounding requirements for this machine. Do not modify or use an adapter on the plug provided—if it will not fit the outlet, have a qualified electrician install the proper outlet with a verified ground. Model T27305 (Mfd. Since 02/16)

  • Page 12: Section 3: Setup

    IMPORTANT: Save all packaging materials until 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 Wear safety glasses during helpful if you need to return your machine later.

  • Page 13: Inventory

    Figure 4. Fastener inventory. G. Safety Shield Mounting Brackets ....2 H. Safety Shield Clamping Plates ....2 Spark Deflector (Left) ......... 1 Spark Deflector (Right) ....... 1 Figure 3. Tool rest and safety shield parts. -11- Model T27305 (Mfd. Since 02/16)

  • Page 14: Site Considerations

    Lock entrances to the shop or disable start switch or power connection to prevent unsupervised use. Lag Screw Flat Washer Machine Base Workbench Figure 7. "Direct Mount" setup. -12- Model T27305 (Mfd. Since 02/16)

  • Page 15: Assembly

    Then attach spark deflector/safety shield assemblies to grinder with (4) M5-.8 x 10 Phillips head screws with washers (see Figure 10). 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.
  • Page 16 Grinding under these condi- tions can lead to faster abrasive loss and poor grinding results. Always follow wheel manufacturer's directions. Figure 12. Model T27305 fully assembled. Tool Rest Adjustment Spark Deflector Adjustment The tool rest stabilizes the workpiece when grind- The spark deflector prevents sparks from shower- ing.

  • Page 17: Test Run

    Figure 15. Removing key from toggle switch. death, or machine/property damage. 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- Model T27305 (Mfd. Since 02/16)

  • Page 18: Section 4: Operations

    Read books/magazines or get severe crushing injuries! formal training before beginning any proj- ects. Regardless of the content in this sec- tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. -16- Model T27305 (Mfd. Since 02/16)

  • Page 19: Workpiece Inspection

    Workpiece Wheel Selection Inspection The Model T27305 only accepts Type 1 wheels with a ⁄ " bore. Some workpieces are not suitable for grinding on a bench grinder. Before grinding, inspect all Aluminum oxide and silicon carbide wheels are workpieces for the following: marked in a somewhat uniform manner by all the major manufacturers.

  • Page 20: Wheel Care

    RPM of this wheel Type-1 60 Grit Aluminum Grade L Oxide Vitrified Bond WARNING Grinding can be dangerous Visually inspect this wheel for cracks, nicks,chips Figure 16. Tapping locations when performing a ring test. -18- Model T27305 (Mfd. Since 02/16)

  • Page 21: Wheel Dressing

    Always adjust tool rest and spark deflector Outer after dressing or replacing grinding wheel. Guard Failure to do so could lead to workpiece kickback and injury. Figure 17. Location of outer guard hardware that must be removed when removing wheel. -19- Model T27305 (Mfd. Since 02/16)
  • Page 22 Never use warped wheel flanges. Always — If wheel appears to wobble, grinder check flanges before re-installing grinding vibrates excessively, or any other unsafe wheel. condition appears with new wheel, stop grinder and refer to Troubleshooting on Page 24. -20- Model T27305 (Mfd. Since 02/16)

  • Page 23: Section 5: Accessories

    Cast iron handle provides To reduce this risk, only install accessories stabilizing mass for better control. recommended for this machine by Grizzly. NOTICE Refer to our website or latest catalog for additional recommended accessories.
  • Page 24 ⁄ ", ⁄ ", ⁄ " and 1". Figure 26. T23248 Fundamentals of Sharpening Book. Figure 24. 8" x 1" aluminum oxide grinding wheels. www.grizzly.com 1-800-523-4777 order online at or call -22- Model T27305 (Mfd. Since 02/16)

  • Page 25: Section 6: Maintenance

    Protecting To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, Cleaning the Model T27305 is relatively easy. maintenance, or service. Vacuum excess debris, and wipe off the remaining dust with a dry cloth. Schedule...

  • Page 26: Section 7: Service

    3. Grinding wheel at fault/arbor hole not 3. Dress/replace grinding wheel. round. 4. Motor bearings at fault. 4. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement. 5. Motor shaft bent. 5. Test with dial indicator and replace motor. -24- Model T27305 (Mfd. Since 02/16)
  • Page 27 2. Wheel too soft for the material being ground, select harder bond. 3. Wheel diameter too small. 3. Replace the wheel. 4. Bad wheel dress. 4. Dress the wheel. 5. Defective wheel bonding. 5. Consult manufacturer of grinding wheel. -25- Model T27305 (Mfd. Since 02/16)

  • Page 28: Section 8: Wiring

    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: Wiring Diagram

    The motor wiring shown here is 5-15 Plug current at the time of printing, but it (Pre-Wired) match your machine. Always use the wiring diagram inside the motor junction box. READ ELECTRICAL SAFETY -27- Model T27305 (Mfd. Since 02/16) ON PAGE 26!

  • Page 30: Wiring Components

    Wiring Components Speed Control Dial Safety Switch Run Capacitor Motor Circuit Board Figure 27. T27305 wiring components. READ ELECTRICAL SAFETY -28- Model T27305 (Mfd. Since 02/16) ON PAGE 26!

  • 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.
  • Page 32 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. -30-...
  • Page 33 Would you recommend Grizzly Industrial to a friend? _____ Yes _____No 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.
  • Page 34 FOLD ALONG DOTTED LINE Place Stamp Here GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069 FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend: Name_______________________________ Street_______________________________ City______________State______Zip______ TAPE ALONG EDGES--PLEASE DO NOT STAPLE...

  • Page 35: Warranty & Returns

    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.

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