Grizzly T28523 Owner's Manual
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Grizzly T28523 Owner's Manual

8" slow-speed bench grinder
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MODEL T28523
8" SLOW-SPEED BENCH GRINDER
OWNER'S MANUAL
(For models manufactured since 05/19)
COPYRIGHT © MAY, 2019 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#RSAL20149 PRINTED IN CHINA
V1.05.19

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Summary of Contents for Grizzly T28523

  • Page 1 (For models manufactured since 05/19) COPYRIGHT © MAY, 2019 BY GRIZZLY INDUSTRIAL, INC. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #RSAL20149 PRINTED IN CHINA V1.05.19...
  • 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 Identification ..........................3 Controls & Components ......................4 Machine Data Sheet ........................5 SECTION 1: SAFETY ........................6 Safety Instructions for Machinery ....................6 Additional Safety for Grinders ....................8 SECTION 2: POWER SUPPLY ......................

  • Page 4: Introduction

    Always consider safety first, as it applies to your individual working conditions. Use this and other machinery with caution and respect. Failure to do so could result in serious personal injury, damage to equip- ment, or poor work results. Model T28523 (Mfd. Since 05/19)

  • Page 5: Identification

    (1 of 2) Spark Deflector (1 of 2) Safety Shield (1 of 2) Tool Rest (Left) ON/OFF Switch Tool Rest (Right) To reduce your risk of serious injury, read this entire manual BEFORE using machine. Model T28523 (Mfd. Since 05/19)

  • Page 6: Controls & Components

    Figure 2. Safety and electrical components. G. Tool Rest (Left): Provides flat surface to rest workpiece on during operations. Includes a V-groove for controlling angle of contact with grinding wheel. Figure 1. Safety components. Figure 3. Left tool rest. Model T28523 (Mfd. Since 05/19)

  • Page 7: Machine Data Sheet

    MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL T28523 8" SLOW‐SPEED BENCH GRINDER 1/3 HP Product Dimensions: Weight................................34 lbs. Width (side-to-side) x Depth (front-to-back) x Height............... 16 x 12-1/2 x 15-1/2 in.

  • Page 8: Section 1: Safety

    Never operate under the influence of drugs or injury or blindness from flying particles. Everyday alcohol, when tired, or when distracted. eyeglasses are NOT approved safety glasses. Model T28523 (Mfd. Since 05/19)
  • Page 9 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 T28523 (Mfd. Since 05/19)

  • Page 10: Additional Safety For Grinders

    Grinding on top of wheels greatly increases risk of work- SPINDLE NUT. Only tighten wheel spindle nut piece kickback. Always grind on downward part enough to drive wheel and prevent slippage. of wheel. Model T28523 (Mfd. Since 05/19)

  • Page 11: Section 2: Power Supply

    Model T28523 (Mfd. Since 05/19)
  • Page 12 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. -10- Model T28523 (Mfd. Since 05/19)

  • Page 13: 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 14: Inventory

    Clamping Brackets ........2 G. Tool Rest Bracket (Right) ......1 H. Tool Rest Bracket (Left) ......1 Tool Rest (Left) ........... 1 Tool Rest (Right) ......... 1 Figure 5. Tool rest and safety shield parts. -12- Model T28523 (Mfd. Since 05/19)

  • Page 15: Site Considerations

    Lock entrances to the shop or disable start switch or power connection to prevent Lag Screw unsupervised use. Flat Washer Machine Base Workbench Figure 9. "Direct Mount" setup. -13- Model T28523 (Mfd. Since 05/19)

  • Page 16: Assembly

    Flat bracket (see Figure 11). Re-tighten hex Washer bolts. Safety Shield Figure 13. Example tool rest assembly (left). Bracket Hex Bolt Figure 11. Left safety shield with hardware and bracket. -14- Model T28523 (Mfd. Since 05/19)
  • Page 17 " (see Figure 15). If the gap reaches ⁄ " and no additional adjustments can be made, replace the grinding wheel. ⁄ " – ⁄ " ⁄ " – ⁄ " Figure 16. Spark deflector gap. Figure 15. Tool rest gap. -15- Model T28523 (Mfd. Since 05/19)

  • Page 18: Test Run

    Operating an improperly set up machine properly and the switch must be replaced. may result in malfunction or unexpect- ed results that can lead to serious injury, death, or machine/property damage. -16- Model T28523 (Mfd. Since 05/19)

  • Page 19: Section 4: Operations

    Regardless of the content in this sec- tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. -17- Model T28523 (Mfd. Since 05/19)

  • Page 20: Workpiece Inspection

    Workpiece Wheel Selection Inspection The Model T28523 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 21: 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 18. Tapping locations when performing a ring test. -19- Model T28523 (Mfd. Since 05/19)

  • Page 22: Wheel Dressing

    Always adjust tool rest and spark deflector Guard after dressing or replacing grinding wheel. Failure to do so could lead to workpiece kickback and injury. Figure 19. Location of outer guard hardware that must be removed when removing wheel. -20- Model T28523 (Mfd. Since 05/19)
  • Page 23 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 25. -21- Model T28523 (Mfd. Since 05/19)

  • Page 24: 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 25: Section 6: Maintenance

    Protecting To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, Cleaning the Model T28523 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

    2. Select harder bond. 3. Wheel diameter too small. 3. Replace grinding wheel (Page 20). 4. Dress grinding wheel (Page 20). 4. Bad wheel dress. 5. Defective wheel bonding. 5. Consult manufacturer of grinding wheel. -24- Model T28523 (Mfd. Since 05/19)

  • Page 27: 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. -25- Model T28523 (Mfd. Since 05/19)

  • Page 28: Wiring Diagram

    5-15 Plug match your machine. Capacitor Always use the wiring diagram Ground inside the motor junction box. Figure 25. T28523 wiring components. READ ELECTRICAL SAFETY -26- Model T28523 (Mfd. Since 05/19) ON PAGE 25!

  • Page 29: Section 9: Parts

    SECTION 9: PARTS We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability. MODEL T28523 8" SLOW-SPEED BENCH GRINDER...
  • Page 30 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. BUY PARTS ONLINE AT GRIZZLY.COM! -28- Model T28523 (Mfd.

  • Page 31: 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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