MODEL G9743 7"x 12" GEAR HEAD METAL-CUTTING BANDSAW OWNER'S MANUAL COPYRIGHT © MARCH, 2006 BY GRIZZLY INDUSTRIAL, INC. REVISED MAY 2009 CR. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
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. The owner of this machine/tool is solely responsible for its safe use.
Table of Contents INTRODUCTION................................................................................................................................ 3 Foreword..................................................................................................................................... 3 Contact Info................................................................................................................................. 3 Identification................................................
SECTION 8: WIRING....................................................................................................................... 32 Wiring Safety Instructions......................................................................................................... 32 Electrical Components.............................................................................................................. 33 Electrical Components.................................................................................
INTRODUCTION Foreword Contact Info We are proud to offer the Model G9743 7" x 12" Gear Head Metal-Cutting Bandsaw. This machine is part of a growing Grizzly family of fine metalworking machinery. When used according to the guidelines set forth in this manual, you can expect years of trouble-free, enjoyable operation and proof of Grizzly’s commitment to customer satisfaction. We stand behind our machines! If you have questions or need help, contact us with the information below.
MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G9743 7" X 12" GEARED HEAD METAL‐CUTTING BANDSAW Product Dimensions: Weight.............................................................................................................................................................. 383 lbs. Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 56 x 17-1/4 x 59 in.
Main Specifications: Operation Info Blade Speeds....................................................................................................................... 158, 213, 308 FPM Std. Blade Length.............................................................................................................................. 104-1/2 in. Blade Size Range........................................................................................................................................ 1 in.
Identification B A F C E R D P G Q O H N I M J K L Figure 1. Main view of machine features. A. B. C. D. E. F. G. H. I. -6- Blade Tension Handle Guide Post Adjustment Knob Coolant Control Valve Blade ON/OFF Switch 11⁄2 HP Motor Speed Control Knob Feed Rate ON/OFF Valve Workstop J. K. L. M. N. O. P. Q. R. Wheels Bandsaw Stand Pump Toggle Switch Limit Switch Handwheel Positive Locking Handle Vise Blade Guides Blade Tracking Controls Model G9743 (Mfg.
SECTION 1: SAFETY For Your Own Safety, Read Instruction Manual Before Operating this Machine The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
Safety Instructions for Machinery 7. ONLY ALLOW TRAINED AND PROPERLY SUPERVISED PERSONNEL TO OPERATE MACHINERY. Make sure operation instructions are safe and clearly understood. 8. KEEP CHILDREN AND VISITORS AWAY. Keep all children and visitors a safe distance from the work area. 9. MAKE WORKSHOP CHILD PROOF. Use padlocks, master switches, and remove start switch keys. 10. NEVER LEAVE WHEN MACHINE IS RUNNING.
Safety Instructions for Metal Cutting Bandsaws 1. BLADE CONDITION. Do not operate with dull, cracked or badly worn blade. Inspect blades for cracks and missing teeth before each use. 8. FIRE HAZARD. Use EXTREME CAUTION if cutting magnesium. Using the wrong cutting fluid will lead to a chip fire and possible explosion. 2. HAND PLACEMENT. Never position fingers or thumbs in line with the cut. Hands could be crushed in vise or from falling machine components. 9. 3. ENTANGLEMENT HAZARDS.
SECTION 2: CIRCUIT REQUIREMENTS 110/220V Operation Power Connection Device The Model G9743 comes prewired with a NEMA 5-15 plug for connection to power. If you rewire the motor to 220V, we recommend using the plug and receptacle shown in Figure 2 for 220V. Serious personal injury could occur if you connect the machine to power before completing the setup process. DO NOT connect the machine to the power until instructed later in this manual.
SECTION 3: SET UP Set Up Safety This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine! Wear safety glasses during the entire set up process! The Model G9743 is a heavy machine. DO NOT over-exert yourself while unpacking or moving your machine—get assistance.
Inventory B After all the parts have been removed from the box, you should have the following items: Box Contents (Figure 3) Qty Metal-Cutting Bandsaw (not shown).................. 1 A. Handle......................................................... 1 B. Feet............................................................. 2 C. Wheel.......................................................... 2 D. Work Stop.................................................... 1 E. Work Stop Leaf Bolt...............................
Hardware Recognition Chart 5mm Model G9743 (Mfg.
Clean Up The unpainted surfaces are coated with a waxy oil to protect them from corrosion during shipment. Remove this protective coating with a solvent cleaner or citrus-based degreaser such as Grizzly’s G7895 Degreaser. To clean thoroughly, some parts may need to be removed. For optimum performance from your machine, make sure you clean all moving parts or sliding contact surfaces that are coated.
Shipping Bracket Work Stop A shipping bracket has been installed on the bandsaw to protect the alignment of the headstock during shipment. After removal, store the bracket in a safe place until you need to move or ship the bandsaw in the future. Components and Hardware Needed: Qty Work Stop............................................................1 Work Stop Rod....................................................1 Thumb Screw......................................................
Handle Components and Hardware Needed: Wheels and Feet Qty Handle................................................................ 1 Hex Nut 5⁄16"-18.................................................. 4 Flat Washer 5⁄16".................................................. 8 Hex Bolt 5⁄16"-18 x 11⁄2"........................................
Test Run Note: If the EMERGENCY STOP button is pressed, it needs to be twisted until it pops out or the bandsaw will not start. Projectiles thrown from the machine could cause serious eye injury. Wear safety glasses during assembly and operation. —If you suspect any problems, immediately stop the bandsaw and correct before continuing. —If you need any help with your bandsaw call our Tech Support at (570) 546-9663. Starting the machine: 1. Read the entire instruction manual. 2.
SECTION 4: OPERATIONS Operation Safety Damage to your eyes, lungs, and ears could result from using this machine without proper protective gear. Always wear safety glasses, a respirator, and hearing protection when operating this machine. Loose hair and clothing could get caught in machinery and cause serious personal injury. Keep loose clothing and long hair away from moving machinery.
Blade Speed To adjust the angle on the vise: 1. Loosen the lock nut with a ⁄4" hex wrench. 2. Use the scale as a guide to set your angle or use a machinist square to square the vise to the blade as shown in Figure 13. 3. Tighten the lock nut. 3 The Model G9743 has these three blade speeds: 148, 216, and 282 FPM. NOTICE DO NOT change speeds when the motor is running. Wait for the bandsaw to come to a complete stop or you will damage the gears and you will void your warranty.
3. With the saw turned OFF, rotate the speed control knob to the desired position (see Figure 16). Cutting Fluid System This bandsaw has a built-in cutting fluid system that extends the life of your bandsaw blades by lowering the temperature of the blade and workpiece and washing away chips. See Cutting Fluid on Page 22 for more information. To use the cutting fluid system: Figure 16. Speed control knob. Blade Selection 1.
4. Adjust the valve on the coolant hose to control the flow of coolant (see Figure 18). Make sure that the pressure is not so high that coolant spills on the floor and creates a slipping hazard. Coolant Control Valve Cutting Fluid While simple in concept and function, many issues must be taken into account to find and use the correct cutting fluid. Always follow all product warnings and contact the fluid manufacturer for unanswered questions.
Feed Rate Feed Rate Dial The speed at which the saw blade will cut through a workpiece is controlled by blade type, feed rate, and feed pressure. ON/OFF Valve Note: If a lubricant is used on the cut, the feed rate can be increased by approximately 15%. To set the feed rate: 1. 2. Raise the headstock to the maximum height to remove spring tension. Close the ON/OFF valve to lock the headstock in place. Using a 14mm wrench, adjust the feed pressure tension spring.
Operation Tips The following tips will help you safely and effectively operate your bandsaw, and help you get the maximum life out of your saw blades. Tips for horizontal cutting: • Use the work stop to quickly and accurately cut multiple pieces of stock to the same length. • Clamp the material firmly in the vise jaws to ensure a straight cut through the material and use the positive lock to speed production. • Let the blade reach full speed before engaging the workpiece.
SECTION 5: ACCESSORIES H2307—104-1/2 H2308—104-1/2 H2315—104-1/2 H2316—104-1/2 H2317—104-1/2 H2318—104-1/2 H2319—104-1/2 H2320—104-1/2 x 1 x .032 10 TPI Raker x 1 x .032 14 TPI Raker x 1 x .032 3-4 Variable Pitch x 1 x .032 4-6 Variable Pitch x 1 x .032 5-8 Variable Pitch x 1 x .032 6-10 Variable Pitch x 1 x .032 8-12 Variable Pitch x1 x .
SECTION 6: MAINTENANCE Lubrication Always disconnect power to the machine before performing maintenance. Failure to do this may result in serious personal injury. Before applying lubricant to any area, wipe the area clean to avoid contamination. Lubricate the vise screw shown in Figure 26 with general purpose grease. Schedule For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section. Daily Check: • Loose mounting bolts.
SECTION 7: SERVICE Review the troubleshooting and procedures in this section to fix your machine if a problem develops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570) 546-9663. Troubleshooting Motor & Electrical Symptom Possible Cause Machine does not start 1. E-Stop button pressed. or a breaker trips. 2. Plug/receptacle is at fault or wired incorrectly. 3. Start capacitor is at fault. 4.
Bandsaw Operations SYMPTOM POSSIBLE CAUSE Machine is loud when cutting or bogs down in the cut. 1. Excessive feed rate. Blades break often. 1. Blade is not tensioned correctly. 2. The blade TPI is too great, or the material is too coarse. 2. 3. 4. 5. 6. 7. 8. Blade dulls prematurely. 1. Check to see that blade is not excessively tight or too loose. The workpiece is loose in the vise. 2. Clamp the workpiece tighter, or use a jig to hold the workpiece. 3.
Blade Change 5. Install the new blade through both blade guide bearings, as shown in Figure 29, and around the bottom wheel. Blades should be changed when they become dull, damaged, or when you are using materials that require a blade of a certain type or tooth count. To change the blade on the bandsaw: 1. UNPLUG THE BANDSAW! 2. Raise the headstock of the bandsaw to the highest position, close the Feed ON/OFF valve, and remove the wheel access cover. 3. Remove the blade guards. 4.
8. 9. Tighten the tension handle as tight as necessary so the blade will not slip on the wheels during start up. Tracking Set Screw Put the gearbox in neutral by moving the gear change knob between two of the speed positions. 10. Spin the wheel by hand until the blade resumes the previous tracking. 11. Put the gearbox back in gear. Lower Cap Screw —If the tracking needs to be adjusted, refer to the Tracking procedure in the next section. —If the tracking is fine, proceed to Blade Tension on Page 31.
Blade Tension Squaring the Blade Proper blade tension is essential to long blade life, straight cuts, and efficient cutting. The Model G9743 features a blade tension indicator to assist you with blade tensioning. It is always a good idea during the life of your saw to check and adjust this setting. This adjustment will improve your cutting results and extend the life of your blade.
Blade Guide Bearings The blade guide bearings come adjusted from the factory and the need for adjustment should rarely occur. Uneven blade wear and crooked cuts may be the result of improper adjustment. Each bearing assembly has an eccentric bushing that allows the distance between the blade and bearings to be adjusted. The bearings are secured in place by a hex nut and a lock washer as shown in Figure 33. Eccentric Bushing Hex Nut 6. Adjust the other eccentric blade guide bearing in the same manner.
SECTION 8: WIRING These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Study this section carefully. If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. Wiring Safety Instructions SHOCK HAZARD.
Electrical Components Figure 35. Circuit breaker. Figure 38. Coolant pump ON/OFF Switch. Figure 36. Bandsaw ON and E-Stop Switches. Figure 39. Pump junction box. Capacitor Motor Circuit Breaker Figure 37. Auto-shutoff switch. Figure 40. Motor wiring inside junction box. Model G9743 (Mfg.
Electrical Components To ON/OFF Switch To Jct. Box To Auto-Shutoff Switch To Pump To Power Source Figure 41. Main electrical box wiring. -34- READ ELECTRICAL SAFETY ON PAGE 33! Model G9743 (Mfg.
Wiring Diagram Optional 220V Connection (Prewired) 110V Connection 3 Start Capacitor 150MFD 250VAC MOTOR MOTOR Start Capacitor 150MFD 250VAC 4 1 2 1 U1 220V CONVERSION U1 V1 1. 2. 3. 4. Disconnect power. Rewire main motor. Rewire pump. Rewire transformer (move L wire from 110V terminal to 220V terminal). 5. Install 220V 6-15 plug.
SECTION 9: PARTS Base/Stand 25 40 26 27 18 16 15 16 28 337 38 39 37 19 338 22 20 20 41 24 29 32 17 36 21 31 30 33 83 50 374 34 377 373 376 375 2 366 46 51 48 56 57 369 61 47 750-4 750-3 750-2 59 370 750-1 58 750 60 62 63 100 99 500 75 79 98 102 78 77 68 261 74 501 502 503 72V2 611 610 73 101 610-1 97 607 76 608 84V2 96 -36- 338 337 45 9 367 364 49 44 43 372 368 365 35 42 1 95 93 95 94 87V2 88V2 86V2 85V2 751-8 751-7 751-6 751-5 75
Headstock 300-8 300-6 300-7 263-1 341 351 345 300-9 300-10 P 190 191 230 229 226 223 227 224 300 300-2 300-3 S TO 195 198 193 228 300-1 D C BR K ER T 300-5 300-4 263-2 263 228 198 800-1 194 A 196 198 197 192 197 227 D 224 A B 200 206 C 225 205 204 203 201 69 202 210 211 212 219 217 67 66 G 215 216 66 64 264 213 71 214 218 65 70 265 264-1 66 291 290 235 319 292 308 317 318 315 240 320 308-5 321 C 316 327 294 293 B 310 308-2 308-4 308-3 329
Misc. Assemblies 292-13 292-12 292-1 292 292-2 292-3 292-4 292-5 292-8 292-9 292-10 292-11 317-11 317-10 317-3 317-2 293-1 317-7 317-6 317-5 294-1 317 293-2 293 294-2 317-4 317-1 293-3 317-8 317-9 294 294-3 235-11 235-10 315-1 316-1 315-2 315 235-9 235-4 316-2 235-2 315-3 316 235 235-12 235-3 316-3 235-1 235-6 235-7 -38- Model G9743 (Mfg.
Gearbox 800-48 800-8 800-7 800-4 800-5 800-6 800-47 800-50 800-57 800-49 800-56 800-2 800-13 800-3 800-53 800-46 800-45 800-21 800-19 800-9 800-11 800-12 800-13 800-10 800-17 800-14 800-17 800-15 800-17 800-1 800-44 800-16 800-44 800-17 800-20 800-55 800-39 800-43 800-21 800-54 800-38 800-22 800-19 800-18 800-40 800-37 800-27 800-40 800-33 800-31 800-30 800-26 800-41 800-24 800-42 800-23 800-41 800-39 800-28 800-51 800-52 Model G9743 (Mfg.
Electrical Box 261-17 261-11 261-4 261-12 261V2-9 261-18 261V2-3 261-13 261V2-5 261-16 261V2-6 261V2-1 261V2-10 261-15 261-8 261-18 261V4-2 261-14 -40- Model G9743 (Mfg.
Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 P9743001 BASE 67 P9743067 CYLINDER UPPER SUPPORT 2 P9743002 ACME SCREW 68 P9743068 SHUT-OFF SWITCH TAB 9 P9743009 ACME NUT 69 PN08 HEX NUT 3/8-16 15 P9743015 FIXED BOLT 70 PB03 HEX BOLT 5/16-18 X 1 16 PW01M FLAT WASHER 3/8 71 PW07 FLAT WASHER 5/16 17 P9743017 VISE JAW BRACKET (FRONT) 72V2 P9743072V2 STAND ASSY. V2.12.
Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 213 P9743213 HANDLE 263-2 P9473263-2 EMERGENCY STOP SWITCH 214 PSB03 CAP SCREW 5/16-18 X 1 264 P9743264 DRIVE BLADE WHEEL 215 PLW04 LOCK WASHER 3/8 264-1 PSS03 SET SCREW 1/4-20 X 3/8 216 P9743216 BLADE TENSION BAR 265 PR11M EXT RETAINING RING 25MM 217 PRP42M ROLL PIN 3 X 20 290 PW02 FLAT WASHER 3/8 218 P9743218 HANDLE BODY 291 PB24 HEX BOLT 3/8-16 X 1-1/4 219 P9743219 HANDLE 292 P9743292 ADJUSTABLE BRACKE
Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 316-1 P9743316-1 GUIDE PIVOT (LEFT) 610 P9743610 MACHINE ID LABEL 316-2 P608 BEARING 608 610-1 P9743610-1 MACHINE WARNINGS LABEL 316-3 PR40M INT RETAINING RING 26MM 611 P9743611 ELECTRICITY LABEL 317 P9743317 ADJ BRACKET (FRONT) ASSY 750 P9743750 SAFETY SWITCH ASSY 317-1 P9743317-1 ADJUSTABLE BRACKET (FRONT) 750-1 PS06 PHLP HD SCR 10-24 X 3/8 317-2 P608 BEARING 608 750-2 P9743750-2 SWITCH BRACKET 317-3 P97433
Parts List REF DESCRIPTION REF 800-38 P9743800-38 WORM GEAR 800-48 P9743800-48 VENT PLUG 800-39 PR11M EXT RETAINING RING 25MM 800-49 P9743800-49 SCALE 800-40 PK07M KEY 6 X 6 X 20 800-50 P9743800-50 RIVET 800-41 P9743800-41 BEARING 60205 800-51 P9743800-51 BEARING COVER 800-42 P9743800-42 BEARING SPACER 800-52 PS09M PHLP HD SCR M5-.8 X 10 800-43 P9743800-43 COVER 800-53 P9743800-53 GASKET 800-44 P9743800-44 O-RING 800-54 P9743800-54 PLUG 800-45 PSBS06M BUTTON HD CAP SCR M5-.
Notes Model G9743 (Mfg.
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.
WARRANTY CARD Name______________________________________________________________________________ Street______________________________________________________________________________ City_ _______________________ State__________________________ Zip_ _____________________ Phone #_____________________ Email_ ________________________ Invoice #__________________ Model #_____________________ Order #________________________ Serial #___________________ The following information is given on a voluntary basis.
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