Grizzly G2790 Owner's Manual
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Grizzly G2790 Owner's Manual

Universal knife grinder
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MODEL G2790
UNIVERSAL KNIFE GRINDER
OWNER'S MANUAL
(For models manufactured since 04/13)
177335
COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC., REVISED MAY, 2017 (BL)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#0346 PRINTED IN TAIWAN
V3.05.17

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  • Page 1 OWNER'S MANUAL (For models manufactured since 04/13) 177335 COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC., REVISED MAY, 2017 (BL) 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 Manual Accuracy ........................2 Contact Info ..........................2 Functional Overview ........................2 Identification ..........................3 Machine Data Sheet ........................4 SECTION 1: SAFETY ........................6 Safety Instructions for Machinery ....................6 Additional Safety for Universal Knife Grinders ................8 SECTION 2: POWER SUPPLY ......................

  • Page 4: Introduction

    Manual Accuracy Functional Overview We are proud to offer this document with your The Model G2790 is a dry grinder and is not new machine! We've made every effort to be designed to be used with cutting fluids. exact with the instructions, specifications, draw-...

  • Page 5: Identification

    Pivot Support Knife Clamp Table Lock Slide Pivot Support Table Adjustment Knob Mounting Hole ON/OFF Switch Figure 3. Model G2790 identification. To reduce your risk of serious injury, read this entire manual BEFORE using machine. Model G2790 (Mfd. Since 04/13)

  • Page 6: Machine Data Sheet

    Type ............................TEFC Capacitor Start Induction Horsepower ..................................⁄ Voltage ....................................110V Phase ....................................Single Amps ...................................... 3A Speed ..................................3500 RPM Cycle ....................................60 Hz Power Transfer ................................Direct Drive Bearings ..........................Shielded and Permanently Sealed Model G2790 Page 1 of 2 Model G2790 (Mfd. Since 04/13)
  • Page 7 Serial Number Location ........................ID Label on Front of Motor Approximate Assembly/Setup Time .......................... 15 Minutes Features: Knife Holder Adjusts From 20° – 70° 120 Grit Aluminum Oxide Grinding Stone Raises and Lowers Page 2 of 2 Model G2790 Model G2790 (Mfd. Since 04/13)

  • Page 8: 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 G2790 (Mfd. Since 04/13)
  • Page 9 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 G2790 (Mfd. Since 04/13)

  • Page 10: Additional Safety For Universal Knife Grinders

    DO NOT use cutting flu- intended operation, stop using the machine and ids, and keep all liquids away from the grinder to contact Tech Support at (570) 546-9663. reduce the risk of electrocution. Model G2790 (Mfd. Since 04/13)

  • Page 11: Section 2: Power Supply

    Model G2790 (Mfd. Since 04/13)

  • Page 12: 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. -10- Model G2790 (Mfd. Since 04/13)

  • 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 helpful if you need to return your machine later.

  • Page 14: Inventory

    "-20 x 2 ⁄ " ......5 H. Star Knobs ⁄ "-20 x ⁄ " ....... 5 O-Rings 6 x 2mm ........5 Hex Nuts ⁄ "-20 .......... 5 Figure 5. Box 1 inventory. -12- Model G2790 (Mfd. Since 04/13)

  • Page 15: Cleanup

    Repeat Steps 2–3 as necessary until clean, then coat all unpainted surfaces with a quality metal protectant to prevent rust. NOTICE Avoid chlorine-based solvents, such as acetone or brake parts cleaner, that may damage painted surfaces. -13- Model G2790 (Mfd. Since 04/13)

  • Page 16: Mounting

    Bolt Flat Washer Machine Base Workbench Flat Washer Lock Washer Hex Nut Figure 8. Example of a through mount setup. -14- Model G2790 (Mfd. Since 04/13)

  • Page 17: Assembly

    Figure 12). Star Knobs w/Flat Washers Adjustable Guard Wheel Guard Figure 10. Adjustable guard installed (slide bar, Figure 12. Adjustable guard alternate setup knife clamp installed for illustration purposes). (knife clamp removed for illustration purposes). -15- Model G2790 (Mfd. Since 04/13)

  • Page 18: Test Run

    DO NOT start machine until all preceding setup instructions have been performed. Operating an improperly set up machine may result in malfunction or unexpect- ed results that can lead to serious injury, death, or machine/property damage. -16- Model G2790 (Mfd. Since 04/13)

  • Page 19: Section 4: Operations

    Regardless of the content in this sec- • To avoid overheating the tool, grind the cut- tion, Grizzly Industrial will not be held liable ting tool with multiple light passes instead of for accidents caused by lack of training.

  • Page 20: Wheel Selection

    Wheel Selection Wheel Care r Model G2790 uses only Type 5 grind Your safety when grinding depends, in a large wheels that have a 1⁄2" bore and are 6" in diameter part, on the condition of the wheel during opera- and 1 1⁄2"...

  • Page 21: Wheel Inspection & Ring Test

    Figure 14. Pivot support installed. Use the knurled wheel of the pivot gear to set the correct angle for your operation, then tighten all four lock knobs. Figure 13. Tapping locations for a ring test. -19- Model G2790 (Mfd. Since 04/13)

  • Page 22: Sharpening Narrow Tools

    Figure 15, then make DISCONNECT MACHINE FROM POWER! sure the stationary clamps and four pivot sup- port lock knobs are tight. Remove the adjustable guard. -20- Model G2790 (Mfd. Since 04/13)
  • Page 23 Figure 17. Pivot support attached to the slide table. O-Ring Hex Nut ⁄ "-20 x 2 ⁄ " Knife Adjustment Knob Figure 19. Wide knife placed on the slide bar even with the front edge. -21- Model G2790 (Mfd. Since 04/13)
  • Page 24 If necessary, repeat this process until the distance is correct Figure 20. Extending the knife beyond the front and the knife is securely clamped. edge of the slide bar. -22- Model G2790 (Mfd. Since 04/13)
  • Page 25 Note: Keep in mind that with a dry grinding operation, the knife can heat up quickly and lose its temper. Sharpening should be done in light passes and for short durations to avoid damaging the knife or wheel. -23- Model G2790 (Mfd. Since 04/13)

  • Page 26: Section 5: Accessories

    If you work around To reduce this risk, only install accessories dust everyday, a half-mask respirator can be a recommended for this machine by Grizzly. lifesaver. Also compatible with safety glasses! NOTICE Refer to our website or latest catalog for additional recommended accessories.
  • Page 27 G3092—Diamond Dresser Tool Industrial diamond dresser tool made especially T23248—Fundamentals of Sharpening Book for dressing the wheels of the G2790 Universal This book contains techniques for keeping hand Knife Grinder. Comes with plastic case and pro- tools like saws, chisels, gouges, and planes razor tective rubber end cap.

  • Page 28: Section 6: Maintenance

    Cleaning the Model G2790 is relatively easy. Use a vacuum to clean debris and dust from the grind- er, then protect the unpainted cast iron surfaces with regular applications of a rust protectant.

  • Page 29: Wheel Dressing

    Lower the table slightly and repeat Step 6. Note: Several light passes with the dress- ing tool will produce the best results with the least amount of wear or damage to the wheel or the dressing tool. -27- Model G2790 (Mfd. Since 04/13)

  • Page 30: Wheel Replacement

    Fully loosen the cap screw in the center of the wheel, then lift the wheel, flange, and cap screw up and off the motor spindle (see Figure 34). Figure 34. Grinding wheel removed from grinder. -28- Model G2790 (Mfd. Since 04/13)

  • Page 31: Section 7: Service

    3. Adjust feet, shim, or tighten mounting hardware. 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. -29- Model G2790 (Mfd. Since 04/13)
  • Page 32 2. Push down or pull up grinding table to make it level side to other. other. with the wheel. 3. Wheel dressed incorrectly 3. Correctly dress the wheel (Page 27). impurities. 4. Wheel is damaged. 4. Replace wheel (Page 28). -30- Model G2790 (Mfd. Since 04/13)

  • Page 33: 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. -31- Model G2790 (Mfd. Since 04/13)

  • Page 34: Wiring Diagram

    Wiring Diagram Motor ON/OFF Switch Ground 110 VAC NEMA 5-15 Plug (As Recommended) Figure 35. G2790 wiring. READ ELECTRICAL SAFETY -32- Model G2790 (Mfd. Since 04/13) ON PAGE 31!

  • Page 35: Section 9: Parts

    SECTION 9: PARTS Parts Breakdown 38V2 20V2 40V3 42V2 32V2 31V2 29V2 28-1 21V2 28V2 49V2 22V2 20V2 26V2 -33- Model G2790 (Mfd. Since 04/13)

  • Page 36: Parts List

    ALUM BOTTOM WHL FLANGE V2.09.12 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. -34- Model G2790 (Mfd. Since 04/13)
  • Page 37 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 38 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 39: Warranty And Returns

    WARRANTY AND 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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