Grizzly G7944 Owner's Manual
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Grizzly G7944 Owner's Manual

12-speed drill presses
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MODEL G7943 G7944
12-SPEED DRILL PRESSES
OWNER'S MANUAL
(For models manufactured since 09/17)
G7943
G7944
184841
COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC. REVISED MAY, 2018 (ABKB)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#BL3698 PRINTED IN CHINA
V3.05.18

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  • Page 1 G7943 G7944 184841 COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC. REVISED MAY, 2018 (ABKB) WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #BL3698 PRINTED IN CHINA...
  • 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

    Site Considerations ........17 Mounting G7943 to Bench ......18 WARRANTY AND RETURNS ......49 Anchoring to Floor ........18 Mounting G7944 to Mobile Base ....19 Assembly ............. 20 Joining Drill Chuck & Arbor ......24 Test Run ............25 SECTION 4: OPERATIONS ......

  • Page 4: Introduction

    Machine Description and it helps us determine if updated documenta- tion is available for your machine. The G7943 and G7944 function and operate the same but have the following differences: G7943 •...

  • Page 5: Identification

    C. Belt Tension Lever Chuck Guard D. Belt Tension Lock Scale E. Table Height Crank K. Column Lock Lever Table Rotation Lock Lever To reduce your risk of serious injury, read this entire manual BEFORE using machine. Model G7943/G7944 (Mfd. Since 09/17)

  • Page 6: Controls & Components

    C. Headstock: The cast-iron upper portion of the drill press, which houses the quill and work light, and supports the motor and belt housing. D. Belt Tension Lever: Adjusts motor location to increase/decrease belt tension. Model G7943/G7944 (Mfd. Since 09/17)

  • Page 7: G7943 Machine Data Sheet

    The information contained herein is deemed accurate as of 6/13/2018 and represents our most recent product specifications. Model G7943 PAGE 1 OF 3 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G7943/G7944 (Mfd. Since 09/17)
  • Page 8 The information contained herein is deemed accurate as of 6/12/2018 and represents our most recent product specifications. Model G7943 PAGE 2 OF 3 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G7943/G7944 (Mfd. Since 09/17)

  • Page 9: G7944 Machine Data Sheet

    G7944 Machine Data Sheet MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G7944 12 SPEED HEAVY‐DUTY 14" FLOOR DRILL PRESS Product Dimensions: Weight................................146 lbs. Width (side-to-side) x Depth (front-to-back) x Height..............14-1/2 x 24 x 64 in.
  • Page 10 The information contained herein is deemed accurate as of 6/12/2018 and represents our most recent product specifications. Model G7944 PAGE 2 OF 3 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G7943/G7944 (Mfd. Since 09/17)

  • Page 11: 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 G7943/G7944 (Mfd. Since 09/17)
  • 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 G7943/G7944 (Mfd. Since 09/17)

  • Page 13: Additional Safety For Drill Presses

    If normal safety pre- respect. Failure to do so could result in cautions are overlooked or ignored, seri- serious personal injury, damage to equip- ous personal injury may occur. ment, or poor work results. -11- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 14: Section 2: Power Supply

    -12- Model G7943/G7944 (Mfd. Since 09/17)
  • Page 15 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. -13- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 16: Section 3: Setup

    (570) 546-9663. IMPORTANT: Save all packaging materials until you are completely satisfied with the machine and have resolved any issues between Grizzly or the SUFFOCATION HAZARD! shipping agent. You MUST have the original pack- Keep children and pets away aging to file a freight claim.

  • Page 17: Inventory

    Hardware Bag (Not Shown) ......1 —Belt Cover Knob ........1 —Hex Wrench 3mm ........1 —Hex Wrench 5mm ........1 —Hex Bolt M10-1.5 x 25mm....... 4 G7943 G7944 Figure 4. G7943/G7944 box inventory. -15- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 18: Cleanup

    Figure 5. T23692 Orange Power Degreaser. Repeat Steps 2–3 as necessary until clean, then coat all unpainted surfaces with a quality metal protectant to prevent rust. -16- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 19: Site Considerations

    Only install in an Shadows, glare, or strobe effects that may distract access restricted location. or impede the operator must be eliminated. 24" 14" Figure 6. G7943/G7944 working clearances. -17- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 20: Mounting G7943 To Bench

    Lag Screw Figure 7. Using holes as a drilling guide. Flat Washer Machine Base Lag Shield Anchor Concrete Drilled Hole Figure 8. Popular method for anchoring machinery to a concrete floor. -18- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 21: Mounting G7944 To Mobile Base

    Failure Figure 10. Mounting base plate to mobile base. to use a base plate greatly increases pos- sibility of tipping and personal injury. -19- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 22: Assembly

    Secure column to base with (4) hex bolts, as shown in Figure 12. Figure 11. Drill press bolted to mobile base, Figure 12. Column secured to base. using lag bolts and flat washers. -20- Model G7943/G7944 (Mfd. Since 09/17)
  • Page 23 Thread handle into crank lever. 10. Thread large lock lever into back of table sup- port assembly approximately three turns, for now. -21- Model G7943/G7944 (Mfd. Since 09/17)
  • Page 24 13. With an assistant, lift the headstock assembly above the column, and gently slide it down the column as far as it will go. 14. (Model G7944): Set top piece of headstock Figure 18. Tilting G7944 drill press upright. Styrofoam packing approximately 6 feet away from column/base assembly.
  • Page 25 24. Remove screw that fastens belt cover in place and replace with belt cover knob (see Figure 22 for location). Spindle Belt Cover Figure 20. Securing headstock to column. Knob Figure 22. Downfeed handles and belt cover knob installed. -23- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 26: Joining Drill Chuck & Arbor

    Impacts with a bulb Attempt to separate drill chuck and arbor by not “safety coated” may shatter, expos- hand —if they separate, repeat Steps 3–4. ing the electrical filaments and creating an electrical shock hazard. -24- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 27: Test Run

    — If the machine does start, immediately stop the machine. The switch disabling feature is not working correctly. This safety fea- ture must work properly before proceeding with regular operations. Call Tech Support for help. -25- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 28: Section 4: Operations

    V-belt configuration chart located inside ects. Regardless of the content in this sec- belt cover. tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. Connects machine to power, and turns machine ON.

  • Page 29: Choosing Speeds

    Aluminum Mild Steel Carbide Insert Type One-Piece Type 1800 Tenon/Plug Cutters Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel 3/8" – 1/2" 1200 1000 5/8" – 1" Figure 27. Drill bit speed chart. -27- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 30: Changing Speeds

    V-belts to the desired V-grooves on the motor, idler, and spindle pulleys. The Model G7943/G7944 are capable of 12 dif- ferent spindle speed RPMs. Spindle speed is For Example: As indicated in the speed...

  • Page 31: Drilling

    SOFT MATERIAL: Soft materials require a faster drilling speed. (NOTE: Plastics can melt at too high of a spindle speed!) The Model G7943/G7944 is designed for drilling LUBRICANT: Use some form of lubricant on holes in wood or metal. The basic operation of a all materials except wood.

  • Page 32: Installing/Removing Drill Bits

    Installing/Removing Depth Stop Drill Bits The Model G7943/G7944 has a depth stop that allows you to drill repeated non-through holes to Any drill bit you install in the chuck must be the same depth every time. tight enough that it will not come loose during operation.

  • Page 33: Positioning Table

    Figure 32. Table adjustment controls. Loosen the lock bolt and tilt the table to the desired angle (make sure the small lock lever is locked, so the table won't fall out). Tighten the lock bolt. -31- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 34: Removing Arbor

    Figure 35. Using drift key to remove arbor. under the chuck. Hold a downfeed handle with one hand, and loosen the depth stop lock with the other hand. 10. Carefully retract the quill into the headstock. -32- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 35: Section 5: Accessories

    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.
  • Page 36 ⁄ ", and ⁄ ". Patented in the US! Figure 42. Model G8581 ⁄ " Keyless Drill Chuck JT#33. Figure 40. H8203 Professional Drill Bit Sharpening Machine. www.grizzly.com 1-800-523-4777 order online at or call -34- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 37: Section 6: Maintenance

    Inspect regularly for tension and wear. Check pulleys to ensure that they are properly aligned. See Changing Speeds on Page 28 for more information about removing/installing belts if you need help replacing the belts. -35- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 38: Section 7: Service

    5. Motor mount loose/broken. 5. Tighten/replace. 6. Motor or spindle bearings at fault. 6. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement. 7. Chuck unbalanced or cutter dull. 7. Replace chuck; replace/resharpen cutter. -36- Model G7943/G7944 (Mfd. Since 09/17)
  • Page 39 1. Poorly adjusted return spring. return to highest 2. Worn return spring. 2. Replace return spring. position. Depth stop pro- 1. Depth stop not calibrated. 1. Calibrate depth stop (Page 38). ducing inaccurate results. -37- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 40: Calibrating Depth Stop

    4. Test the depth stop by measuring how far the spindle actually moves with respect to where you set the depth stop. Jam Nut and Cover Nut Spring Lock Cover Figure 44. Spindle return spring assembly. -38- Model G7943/G7944 (Mfd. Since 09/17)
  • Page 41 Put on heavy leather gloves to protect yours hands from possible Hold the cover nut and tighten the jam nut lacerations when removing the cover. against the cover nut. -39- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 42: 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. -40- Model G7943/G7944 (Mfd. Since 09/17)

  • Page 43: Electrical Components

    Figure 46. Power and light switch assembly. Figure 48. Motor wiring inside junction box. Light Socket Capacitor Figure 47. Light socket with dust plug removed. Figure 49. Start capacitor. READ ELECTRICAL SAFETY -41- Model G7943/G7944 (Mfd. Since 09/17) ON PAGE 40!

  • Page 44: G7943/G7944 Wiring Diagram

    Light Socket Start Capacitor 200uF 125V Neutral 120 VAC Ground 5-15 Plug Ground (Preinstalled) Light WARNING! Switch SHOCK HAZARD! Disconnect power before working on Ground wiring. Power Switch READ ELECTRICAL SAFETY -42- Model G7943/G7944 (Mfd. Since 09/17) ON PAGE 40!

  • Page 45: Section 9: Parts

    58-5 58-7V2 56A 57 48 49 G7944 ONLY 23A-4 23A-2 23A-3 23A-1V2 100B 100C 121-1 121-1 121-2 121-2 121-4 121-5 121-3 BUY PARTS ONLINE AT GRIZZLY.COM! -43- Model G7943/G7944 (Mfd. Since 09/17) Scan QR code to visit our Parts Store.
  • Page 46 PHLP HD SCR M5-.8 X 12 P7943090 ARBOR P7943047 TAP SCREW M4.2 X 9 P7943091 CHUCK P7943048 PHLP HD SCR M5-.8 X 10 P7943092 CHUCK KEY BUY PARTS ONLINE AT GRIZZLY.COM! -44- Model G7943/G7944 (Mfd. Since 09/17) Scan QR code to visit our Parts Store.
  • Page 47 WING NUT M5-.8 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. BUY PARTS ONLINE AT GRIZZLY.COM! -45- Model G7943/G7944 (Mfd.

  • Page 48: G7943/G7944 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! -46- Model G7943/G7944 (Mfd.
  • Page 49 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 50 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 51: 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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G7943

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