Grizzly T32251 Owner's Manual
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Grizzly T32251 Owner's Manual

6"/8" variable-speed bench grinder
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MODEL T32251/T32252
6"/8" VARIABLE-SPEED
BENCH GRINDER
OWNER'S MANUAL
(For models manufactured since 08/20)
COPYRIGHT © NOVEMBER, 2020 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.
#CS21279 PRINTED IN TAIWAN
V1.11.20

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Summary of Contents for Grizzly T32251

  • Page 1 (For models manufactured since 08/20) COPYRIGHT © NOVEMBER, 2020 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. #CS21279 PRINTED IN TAIWAN V1.11.20...
  • 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

    Identification ........... 3 Grinding Wheels .......... 27 Controls & Components ......... 4 Cleaning & Protecting ........27 T32251 Machine Data Sheet ......5 Wheel Dressing..........27 T32252 Machine Data Sheet ......7 Lubrication ........... 27 SECTION 1: SAFETY ........9 SECTION 7: SERVICE ........

  • 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 T32251/T32252 (Mfd. Since 08/20)

  • Page 5: Identification

    Work Rest Lock Knob Digital Readout ON/OFF Switch w/Disabling Key Variable-Speed Dial For Your Own Safety Read Instruction Manual Before Operating Grinder 1) Wear eye protection. 2) Use grinding wheel suitable for speed of grinder. Model T32251/T32252 (Mfd. Since 08/20)

  • Page 6: Controls & Components

    D. Work Rest Lock Knob: Loosens to adjust serious injury, read this work rest position and tightens to secure. entire manual BEFORE using machine. E. Work Rest: Provides flat surface to rest workpiece on during operations. Model T32251/T32252 (Mfd. Since 08/20)

  • Page 7: T32251 Machine Data Sheet

    MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL T32251 6" VARIABLE‐SPEED BENCH GRINDER Product Dimensions: Weight................................37 lbs. Width (side-to-side) x Depth (front-to-back) x Height..............19 x 12 x 14-1/2 in.
  • Page 8 The information contained herein is deemed accurate as of 9/15/2020 and represents our most recent product specifications. Model T32251 PAGE 2 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model T32251/T32252 (Mfd. Since 08/20)

  • Page 9: T32252 Machine Data Sheet

    The information contained herein is deemed accurate as of 9/15/2020 and represents our most recent product specifications. Model T32252 PAGE 1 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model T32251/T32252 (Mfd. Since 08/20)
  • Page 10 The information contained herein is deemed accurate as of 9/15/2020 and represents our most recent product specifications. Model T32252 PAGE 2 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model T32251/T32252 (Mfd. Since 08/20)

  • Page 11: 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 T32251/T32252 (Mfd. Since 08/20)
  • Page 12 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. -10- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 13: Additional Safety For Grinders

    FIRMLY secured in a location free of explosive or flammable materials. Frequently clean grinding EYE SHIELDS. Place eye shields close to grind- dust from beneath grinder and inside wheel cover. ing wheel and re-adjust as wheel wears down. -11- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 14: Section 2: Power Supply

    For your own safety and protection of Full-Load Current Rating (T32251) ..3 Amps property, consult an electrician if you are Full-Load Current Rating (T32252) ..6 Amps unsure about wiring practices or electrical codes in your area.
  • Page 15 Additionally, it must meet the following size requirements: Minimum Gauge Size (T32251) ...16 AWG Minimum Gauge Size (T32252) ...14 AWG Maximum Length (Shorter is Better)..50 ft. SHOCK HAZARD! Two-prong outlets do not meet the grounding requirements for this machine.

  • Page 16: Section 3: Setup

    IMPORTANT: Save all packaging materials until weight of this machine. 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.

  • Page 17: Inventory

    T32251 Box Contents (Figure 5) A. Grinder ............1 B. Left Work Rest ..........1 C. Right Work Rest ......... 1 D.

  • Page 18: Cleanup

    Plastic paint scraper (optional) Basic steps for removing rust preventative: = Electrical Connection Put on safety glasses. Figure 9. T32251 minimum working clearances. Coat the rust preventative with a liberal 22" amount of cleaner/degreaser, then let it soak for 5–10 minutes.

  • Page 19: Bench Mounting

    The Model T32251 and T32252 come mostly The strongest mounting option is a "Through assembled from the factory. Using the hardware Mount" (see example below) where holes are from the Inventory list on Page 15, complete the drilled all the way through the workbench—and...
  • Page 20 (Behind Eye Shield) left wheel guard. Bracket Repeat Step 4 with right eye shield bracket to attach bracket to right wheel guard. Eye Shield Figure 17. Eye shield attached to eye shield bracket and plate. -18- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 21: Test Run

    Left Wheel Guard Figure 19. Left eye shield support attached to left wheel guard. Repeat Step 5 with right eye shield support to attach support to right wheel guard. -19- Model T32251/T32252 (Mfd. Since 08/20)
  • Page 22 Rotate dial back and forth to test variable-speed function. Motor should run smoothly and without unusual vibrations or noises. Turn variable-speed dial all the way counter- clockwise, then move ON/OFF switch down to turn motor OFF. -20- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 23: Section 4: Operations

    Regardless of the content in this sec- in this manual are easier to understand. tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. Due to the generic nature of this overview, it is not intended to be an instructional guide.

  • Page 24: Workpiece Inspection

    Grinding Wheel Some workpieces are not suitable for grinding on The Model T32251/T32252 grinders only accept a bench grinder. Before grinding, inspect all Type 1 wheels. The T32251 requires a ⁄ " bore workpieces for the following: while the T32252 requires a ⁄...

  • Page 25: Caring For Grinding 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 22. Tapping locations when performing a ring test. -23- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 26: Dressing Grinding Wheel

    (3). dropped or having other items dropped on them. Also, avoid storing grinding wheels where there is high humidity, extreme heat or cold, or solvents. -24- Model T32251/T32252 (Mfd. Since 08/20)
  • Page 27 Never use warped wheel flanges. Always grinder and refer to Troubleshooting on check flanges before installing grinding Page 28. wheel. 10. Adjust work rest so there is no more than ⁄ " between work rest and grinding wheel. -25- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 28: Section 5: Accessories

    G7415—6" x 1", 60 Grit To reduce this risk, only install accessories These Aluminum Oxide bench grinding wheels recommended for this machine by Grizzly. measure 6" x 1" and feature a ⁄ "–1" bore. The nested bushings adjust to ⁄...

  • Page 29: Section 6: Maintenance

    Lubrication The grinding wheels should be inspected before every use. Use the ring test method noted in The bearings on the Model T32251/T32252 are Inspecting Grinding Wheel on Page 23 to verify permanently sealed and require no lubrication. structural integrity. Take care in storing grinding...

  • Page 30: Section 7: Service

    3. Adjust feet, shim, or tighten mounting hardware (Page 17). 4. Motor shaft bent. 4. Test with dial indicator and replace motor. 5. Motor bearings at fault. 5. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement. -28- Model T32251/T32252 (Mfd. Since 08/20)
  • Page 31 2. Wheel is too soft for material being ground. 3. Replace wheel (Page 24). 3. Wheel diameter too small. 4. Re-dress wheel (Page 27). 4. Wheel dressed incorrectly. 5. Defective wheel bonding. 5. Consult manufacturer of grinding wheel/replace wheel. -29- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 32: 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. -30- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 33: T32251 Wiring Diagram

    R Cap 0.47uF K 310V Fuse Ground WARNING! 110 VAC SHOCK HAZARD! 5-15 Plug Disconnect power CON2 BUSSMAN BUSSMAN before working on CON1 10A 250V 10A 250V wiring. READ ELECTRICAL SAFETY -31- Model T32251/T32252 (Mfd. Since 08/20) ON PAGE 30!

  • Page 34: T32252 Wiring Diagram

    Film Cap 0.47uF K 310V WARNING! Fuse Ground 110 VAC SHOCK HAZARD! 5-15 Plug Disconnect power CON2 before working on BUSSMAN BUSSMAN CON1 10A 250V 10A 250V wiring. READ ELECTRICAL SAFETY -32- Model T32251/T32252 (Mfd. Since 08/20) ON PAGE 30!

  • Page 35: Electrical Component Photos

    Electrical Component Photos Figure 31. T32252 start capacitors. Figure 28. Control unit wiring. Figure 32. T32251 switch wiring. Figure 29. LED light junction box. Figure 30. T32251 start capacitors. Figure 33. T32252 switch wiring. READ ELECTRICAL SAFETY -33- Model T32251/T32252 (Mfd. Since 08/20)

  • Page 36: 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. T32251 Parts 13 14 REF PART #...

  • Page 37: T32252 Parts

    PHLP HD SCR M6-1 X 16 PT32252042 ON/OFF SWITCH JI-HONG J9301-1YT PT32252021 PHLP HD SCR M4-.7 X 6 PT32252043 VARIABLE-SPEED DIAL BUY PARTS ONLINE AT GRIZZLY.COM! -35- Model T32251/T32252 (Mfd. Since 08/20) Scan QR code to visit our Parts Store.

  • Page 38: Labels & Cosmetics

    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! -36- Model T32251/T32252 (Mfd.

  • Page 39: 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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T32252

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