Grizzly G9743 Owner's Manual
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Grizzly G9743 Owner's Manual

7"x12" gearhead metal-cutting bandsaw
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MODEL G9743
7" X 12" GEARHEAD
METAL-CUTTING BANDSAW
OWNER'S MANUAL
(For models manufactured since 10/23)
COPYRIGHT © MARCH, 2006 BY GRIZZLY INDUSTRIAL, INC., REVISED JUNE, 2023 (CS)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#PCBL7711 PRINTED IN TAIWAN
V3.06.23
***Keep for Future Reference***

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Summary of Contents for Grizzly G9743

  • Page 1 OWNER'S MANUAL (For models manufactured since 10/23) COPYRIGHT © MARCH, 2006 BY GRIZZLY INDUSTRIAL, INC., REVISED JUNE, 2023 (CS) 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 SECTION 5: ACCESSORIES ......39 Contact Info............ 2 SECTION 6: MAINTENANCE ......41 Manual Accuracy ........... 2 Schedule ............41 Identification ........... 3 Cleaning & Protecting ........41 Controls & Components ......... 4 Lubrication ........... 41 Machine Data Sheet ........

  • 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 documentation is available for your machine. Manufacture Date Serial Number Model G9743 (Mfd. Since 10/23)

  • Page 5: Identification

    Maintain proper adjustment of blade tension, blade guides, and support bearings. d) Adjust upper guide to just clear workpiece. e) Properly support and secure workpiece with table, vise, or some type of support fixture. Never hold workpiece with hands during cut. Model G9743 (Mfd. Since 10/23)

  • Page 6: Controls & Components

    K. Work Stop: Supports repetitive cutting operations. E. Guide Post Adjustment Knob: Adjusts upper blade guide that supports blade. Model G9743 (Mfd. Since 10/23)
  • Page 7 OFF when headstock is fully lowered and press reset button. If button does not stay switch is engaged. depressed, allow motor to cool longer, then try again. Model G9743 (Mfd. Since 10/23)

  • Page 8: Machine Data Sheet

    Machine Data Sheet MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G9743 7" X 12" 1‐1/2 HP GEARHEAD METAL‐ MODEL G9743 CUTTING BANDSAW 7" X 12" GEARHEAD METAL-CUTTING BANDSAW Product Dimensions: Weight................................
  • Page 9 The information contained herein is deemed accurate as of 6/9/2023 and represents our most recent product specifications. Model G9743 PAGE 2 OF 3 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G9743 (Mfd. Since 10/23)

  • Page 10: 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 G9743 (Mfd. Since 10/23)
  • Page 11 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 G9743 (Mfd. Since 10/23)

  • Page 12: Additional Safety For Horizontal Metal Bandsaws

    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. -10- Model G9743 (Mfd. Since 10/23)

  • Page 13: Section 2: Power Supply

    Nominal Voltage ..208V, 220V, 230V, 240V meets the specified circuit requirements. Cycle ............60 Hz Phase ........... Single-Phase Power Supply Circuit ......15 Amps Plug/Receptacle ......NEMA 6-15 -11- Model G9743 (Mfd. Since 10/23)
  • Page 14 Maximum Length (Shorter is Better)..50 ft. power cord. The plug must only be inserted into a matching receptacle (see following figure) that is properly installed and grounded in accordance with all local codes and ordinances. -12- Model G9743 (Mfd. Since 10/23)

  • Page 15: Converting Voltage To 220V

    Wire Stripper ............. 1 Ground Transformer Plug 6-15 ............1 Ground TBSM RF-017 (Prewired) (Rewired) To convert Model G9743 to 220V: (Rewired for 220V) 0V 110V 220V DISCONNECT MACHINE FROM POWER! Open main motor junction box. Ground Figure 11. Main motor rewired for 220V Remove wire nuts on main motor, as indi- operation.
  • Page 16 — If plug manufacturer did not include instruc- Main Electrical Box terminal to 220V terminal (see Figure 14). tions, wiring of generic NEMA 6-15 plug is illustrated on Page 56. F Switch Neutral Switch Neutral -14- Model G9743 (Mfd. Since 10/23)

  • Page 17: 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 18: Inventory

    "-12 (Feet) ........ 2 K. Hex Bolts ⁄ "-18 x 1 ⁄ " (Handle) ....4 L. Flat Washers ⁄ " (Handle) ......8 Figure 16. Box contents. M. Hex Nuts ⁄ "-18 (Handle) ......4 -16- Model G9743 (Mfd. Since 10/23)

  • Page 19: Hardware Recognition Chart

    Hardware Recognition Chart USE THIS CHART TO MATCH UP HARDWARE DURING THE INVENTORY AND ASSEMBLY PROCESS. Flat Head Screw -17- Model G9743 (Mfd. Since 10/23)

  • Page 20: Cleanup

    Figure 17. 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. -18- Model G9743 (Mfd. Since 10/23)

  • Page 21: Site Considerations

    Only install in an Shadows, glare, or strobe effects that may distract access restricted location. or impede the operator must be eliminated. 56" 17½" Electrical Connection Figure 18. Minimum working clearances. -19- Model G9743 (Mfd. Since 10/23)

  • Page 22: Assembly

    With assistant helping to stabilize load, lift machine just high enough to clear pallet. Remove pallet, then place wooden blocks under machine so it will be supported 4" off the ground, then lower machine. -20- Model G9743 (Mfd. Since 10/23)
  • Page 23 Figure 25. Drain tube placed in tank. 12. With help of an assistant, remove bandsaw from blocks. 13. Adjust feet to level bandsaw as needed, then tighten hex nuts against machine base to secure. -21- Model G9743 (Mfd. Since 10/23)

  • Page 24: Power Connection

    NOTICE DO NOT operate, or allow others to operate, machine until the information is understood. Model G9743 is prewired for 110V. If you plan to operate machine at 220V, motors and transformer must be rewired, cir- cuit breaker and overload relay must be...
  • Page 25 Twist Emergency Stop button clockwise until it springs out (see Figure 28). This resets the Pump ON/OFF switch so the machine can start. Switch Figure 30. Location of pump ON/OFF switch. -23- Model G9743 (Mfd. Since 10/23)

  • Page 26: Recommended Adjustments

    Adjusting Downfeed Stop Bolt on Page 52 before restarting Test Run. If bolt has been adjusted and downfeed limit switch still does not turn power OFF when headstock is in lowest position, call Tech Support for help. -24- Model G9743 (Mfd. Since 10/23)

  • Page 27: Section 4: Operations

    Read books/magazines or get 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. -25- Model G9743 (Mfd. Since 10/23)

  • Page 28: Operation Tips

    Cutting magnesium with a dull blade can cre- ate enough friction to ignite the small mag- nesium chips. Avoid cutting magnesium, if possible. Loosen blade tension at the end of each day to prolong blade life. -26- Model G9743 (Mfd. Since 10/23)

  • Page 29: Using Vise

    Using Vise Fixed Vise Jaw Movable Vise Jaw Angle Bolt The vise on the Model G9743 adjusts from Angle Nut 45°–90° in relation to the blade and has a posi- tive locking feature that improves productivity by opening the vise jaws just enough to slide material through.

  • Page 30: Adjusting Work Stop

    Adjusting Work Stop Selecting Blades The Model G9743 is equipped with a work stop Selecting the right blade for the cut requires a for repetitive cutting operations. The work stop knowledge of various blade characteristics. will need to be adjusted any time it is removed or repositioned.
  • Page 31 Material Width/Diameter Teeth Per Inch (TPI) for Bandsaw Blades Material Shapes TOOTH SELECTION 1.5/.8 1.4/2.5 1.4/2.5 1.5/.8 inch 2½ 3½ 14 15 Figure 37. General guidelines for blade selection and speed chart. -29- Model G9743 (Mfd. Since 10/23)

  • Page 32: Changing Blade

    Move upper blade guide as far right as pos- sible (see Adjusting Blade Guide Positions on Page 37), then clean out all chips and Figure 41. Location of blade tension handle. shavings with brush and shop vacuum. -30- Model G9743 (Mfd. Since 10/23)
  • Page 33 17. Move speed control knob to 148, 216, or 282 FPM speed setting to put gearbox back in gear. Figure 43. Example of blade cutting direction. -31- Model G9743 (Mfd. Since 10/23)

  • Page 34: Tensioning Blade

    The Model Adjust upper and lower blade guides as close G9743 features a blade tension indicator to assist to workpiece as possible before performing you with blade tensioning.

  • Page 35: Blade Care & Break-In

    Blade Care & Changing Blade Break-In Speed Blade Care The Model G9743 has these three blade speeds: 148, 216, and 282 FPM. To prolong blade life, always use a blade with the proper width, set, type, and pitch for each applica- NOTICE tion.

  • Page 36: Blade Speed Chart

    Tool Steel (62) Steel (26) Cast Iron (98) Oil- Copper 229~482 203~213 85~203 Plastics & Hardened Stainless Alloy (70) (147) (62) (65) (26) (62) Lumber (67) Tool Steel Steel Figure 47. Blade speed chart. -34- Model G9743 (Mfd. Since 10/23)

  • Page 37: Chip Inspection Chart

    Hard, Coiled & Check Blade Silver Increase Decrease Thin Pitch Straight & Thin Silver Good Increase Powdery Silver Decrease Increase Coiled, Tight & Check Blade Silver Good Decrease Thin Pitch Figure 48. Chip inspection chart. -35- Model G9743 (Mfd. Since 10/23)

  • Page 38: Setting Blade Feed Rate

    Observe chips that exit cut and adjust feed rate dial according to chip characteristics (see Chip Inspection Chart on Page 35). Spring Adjustment Feed Pressure Tension Spring Figure 49. Spring adjustment components. -36- Model G9743 (Mfd. Since 10/23)

  • Page 39: Adjusting Blade Guide Positions

    Use proper personal protective equipment when Wire handling cutting fluid and Brush follow federal, state, and cutting fluid manufacturer requirements to properly dispose of cutting fluid. Figure 52. Lower blade guide adjustment components and blade brush. -37- Model G9743 (Mfd. Since 10/23)

  • Page 40: Cutting Fluid System

    Safety Wear ....See Hazards on Page 44 Cutting Fluid ....9 ⁄ Liters (2 ⁄ Gallons) Clean Jug or Bucket .......... 1 To use cutting fluid system: Figure 54. Location of cutting fluid control valve. DISCONNECT MACHINE FROM POWER! -38- Model G9743 (Mfd. Since 10/23)

  • Page 41: Section 5: Accessories

    " x 1" x .035" 4–6 Variable Pitch To reduce this risk, only install accessories H2317—104 ⁄ " x 1" x .035" 5–8 Variable Pitch recommended for this machine by Grizzly. H2318—104 ⁄ " x 1" x .035" 6–10 Variable Pitch H2319—104 ⁄...
  • Page 42 " and all steel construction make them convenient tall (without handle). Approximate shipping weight: and rugged. 192 lbs. Figure 61. Roller stands. Figure 59. T21321 Hand Punch. www.grizzly.com 1-800-523-4777 order online at or call -40- Model G9743 (Mfd. Since 10/23)

  • Page 43: Section 6: Maintenance

    To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, Cleaning the Model G9743 is relatively easy. Use maintenance, or service. a brush and shop vacuum to remove chips and other debris from the working surfaces. Remove any excess cutting fluid with a dry towel.
  • Page 44 The 514M 6EP equals a ISO 320 viscos- ity grade. Sight Glass Figure 65. Location of gearbox fill components. Figure 64. T28042 Moly-D Gear Oil. -42- Model G9743 (Mfd. Since 10/23)
  • Page 45 Step 12. 12. Remove fill plug, add oil until it fills half of sight glass, then install fill plug (see Figure 66). Drain Sight Glass Plug Figure 66. Location of gearbox components. -43- Model G9743 (Mfd. Since 10/23)

  • Page 46: Cutting Fluid System

    Use personal protec- tion equipment when Install tank and fill with cutting fluid past "8L" handling cutting fluid. mark on tank. Follow federal, state, and cutting fluid manu- Install coolant pump. facturer requirements for proper disposal. -44- Model G9743 (Mfd. Since 10/23)

  • Page 47: Section 7: Service

    10. Test all legs for power; repair/replace if at fault. 11. Centrifugal switch/contact points at fault. 11. Adjust centrifugal switch/clean contact points. Replace either if at fault. 12. Motor or motor bearings at fault. 12. Replace motor. -45- Model G9743 (Mfd. Since 10/23)
  • Page 48 2. Move blade guides closer to workpiece (Page 37). 2. Blade not supported. or shows 3. Replace blade (Page 30). 3. Dull/incorrect blade. overheating. 4. Incorrect cutting fluid for workpiece/cut. 4. Use correct cutting fluid mixture. -46- Model G9743 (Mfd. Since 10/23)
  • Page 49 2. Clean and change cutting fluid (Page 44). pulling sludge dirty. from tank. 1. Adjust downfeed stop bolt (Page 52). Blade cuts 1. Downfeed stop bolt requires adjustment. into table or does not fully cut through workpiece. -47- Model G9743 (Mfd. Since 10/23)

  • Page 50: Adjusting Blade Tracking

    Remove (2) knobs and flat washers shown in Figure 69 to remove blade cover. Lower Blade Guide Assembly Blade Brush Assembly Blade Cover Figure 71. Location of blade brush assembly and screws. Figure 69. Location of blade cover and fasteners. -48- Model G9743 (Mfd. Since 10/23)
  • Page 51 — Loosening set screw will move blade away 19. Refer to Adjusting Blade Guides & Bearings from shoulder of wheel (see Figure 73). on Page 51 to adjust blade guides to blade. Wheel Shoulder Blade Figure 73. Location of wheel shoulder. -49- Model G9743 (Mfd. Since 10/23)

  • Page 52: Squaring Blade To Table

    Figure 76. Location of adjustment cap screw (upper blade guide assembly shown). — If blade is not square to table, proceed to Step 4. Tighten cap screw(s). Press hose bibs into blade guide assemblies to install cutting fluid hoses. -50- Model G9743 (Mfd. Since 10/23)

  • Page 53: Adjusting Blade Guides & Bearings

    Adjust carbide blade guide until guide makes Figure 78. Location of support bearing (upper light contact with blade or has clearance of blade guide shown). 0.001"–0.002", then tighten cap screw to secure. -51- Model G9743 (Mfd. Since 10/23)

  • Page 54: Adjusting Blade Brush

    Adjusting Blade Brush Downfeed Stop Bolt The Model G9743 has a blade brush to help keep If the blade does not turn OFF at the end of a metal chips off the blade wheels. Use this section cut, the headstock does not travel far enough to...
  • Page 55 Shut-Off Switch Raise headstock a few inches above vise, Figure 82. Location of shut-off switch tab and close feed on/off valve to keep it from lower- hex bolt. ing, then connect machine to power. -53- Model G9743 (Mfd. Since 10/23)

  • Page 56: 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. -54- Model G9743 (Mfd. Since 10/23)

  • Page 57: Wiring Diagram (110V)

    Prewired for 110V 24.5 Overload Relay Pump ON/OFF Switch 97NO 98NO 95NC 96NC TECO SCI R13-25A RHU-10/30K2 Ground Neutral 110 VAC Ground Ground L5-30 Plug (As Recommended) Main Electrical Box READ ELECTRICAL SAFETY -55- Model G9743 (Mfd. Since 10/23) ON PAGE 54!

  • Page 58: Wiring Diagram (220V)

    Rewired for 220V Overload Relay Pump ON/OFF Switch 97NO 98NO 95NC 96NC TECO SCI R13-25A RHU-10/12.5K1 (Rewired for 220V) Ground Ground 6-15 Plug Ground (As Recommended) Main Electrical Box READ ELECTRICAL SAFETY -56- Model G9743 (Mfd. Since 10/23) ON PAGE 54!

  • Page 59: Electrical Component Photos

    Figure 86. Main motor junction box wiring (110V). Figure 84. Pump motor junction box wiring Figure 87. Start capacitor wiring. (110V). Figure 85. Pump ON/OFF switch wiring. Figure 88. Downfeed limit switch wiring. READ ELECTRICAL SAFETY -57- Model G9743 (Mfd. Since 10/23) ON PAGE 54!
  • Page 60 Electrical Component Photos (Cont.) Figure 89. Main electrical box wiring (110V). READ ELECTRICAL SAFETY -58- Model G9743 (Mfd. Since 10/23) ON PAGE 54!

  • Page 61: 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. Base/Stand 18V2 337V3 37V3 338V3...
  • Page 62 PHLP HD SCR M4-.7 X 6 P9743076 HEX BOLT 3/8-16 X 1-1/4 751-8 P9743751-8 STRAIN RELIEF TYPE-3 PG11V3.04.06 P9743077 HEX NUT 3/8-16 BUY PARTS ONLINE AT GRIZZLY.COM! -60- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 63: Headstock

    300V4-3 300V4-6 300V4-4 300V4-5 300V4-8 300V4-7 300V4-9 300V4-10 (For 220V Conversion) 300V4-10X 206V3 66V2 66V2 219V3 64V4 66V2 264-1 308V3 332V2 BUY PARTS ONLINE AT GRIZZLY.COM! -61- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.
  • Page 64 COMPRESSION SPRING 14 X 140 P9743345 BRACKET P9743226 SET SCREW 5/16-18 X 3/4 P9743351 PHLP HD SCR 10-24 X 3/8 P9743227 LOCK WASHER 5/16 BUY PARTS ONLINE AT GRIZZLY.COM! -62- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 65: Miscellaneous Assemblies

    GUIDE PIVOT RIGHT V2.01.02 317V4-10 P9743317V4-10 LOCK WASHER 3/8 293-2 P9743293-2 BEARING 22MM X 8MM 608ZZ 317V4-11 P9743317V4-11 HEX NUT 3/8-24 BUY PARTS ONLINE AT GRIZZLY.COM! -63- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 66: Gearbox

    800-19 800-18 800-40 800-37 800-27 800-40 800-33 800-26 800-31 800-41 800-24 800-30 800-42 800-23 800-41 800-39 800-25 800-28 800-51 800-29 800-52 BUY PARTS ONLINE AT GRIZZLY.COM! -64- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.
  • Page 67 SIGHT GLASS 800-25 P9743800-25 GEAR 800-56 P9743800-56 O-RING 15.8 X 2.4 P16 800-26 P9743800-26 GEAR 800-57 P9743800-57 INT RETAINING RING 25MM BUY PARTS ONLINE AT GRIZZLY.COM! -65- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 68: Electrical Box

    ELECTRICAL BOX 261V5-19 P9743261V5-19 PUMP SWITCH CORD 18G 3W 30" 261V5-10 P9743261V5-10 OL RELAY TECO RHU-10/30K2 24.5-30A 110V 261V5-20 P9743261V5-20 DIN RAIL BUY PARTS ONLINE AT GRIZZLY.COM! -66- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 69: Labels & Cosmetics (Front)

    MACHINE ID LABEL V3.05.23 P9743615 FLUID CAPACITY LABEL 610-1V3 P9743610-1V3 MACHINE WARNINGS LABEL V3.05.23 P9743616 SHIPPING BRACKET LABEL P9743612 CUTTING HAZARD LABEL BUY PARTS ONLINE AT GRIZZLY.COM! -67- Model G9743 (Mfd. Since 10/23) Scan QR code to visit our Parts Store.

  • Page 70: Labels & Cosmetics (Rear)

    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! -68- Model G9743 (Mfd.

  • Page 71: 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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