Grizzly G9743 Owner's Manual

7" x 12" gear head metal-cutting bandsaw

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MODEL G9743

7"x 12" GEAR HEAD

METAL-CUTTING BANDSAW

OWNER'S MANUAL

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

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Summary of Contents for Grizzly G9743

Page 1 7"x 12" GEAR HEAD METAL-CUTTING BANDSAW OWNER'S MANUAL COPYRIGHT © MARCH, 2006 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. #PCBL7711 PRINTED IN TAIWAN...
Page 2 �� ...
Page 3: Table Of Contents
INTRODUCTION ... 3 Foreword ... 3 Contact Info ... 3 Machine Data Sheet ... 4 Identification ... 6 SECTION 1: SAFETY... 7 Safety Instructions for Machinery ... 7 Safety Instructions for Metal Cutting Bandsaws ... 9 SECTION 2: CIRCUIT REQUIREMENTS ... 10 110/220V Operation ...
Page 4 Schedule ... 28 Cleaning ... 28 Lubrication ... 28 Maintenance Log ... 29 SECTION 7: SERVICE ... 30 Troubleshooting ... 30 Blade Change ... 32 Blade Tracking ... 33 Blade Tension ... 34 Squaring the Blade ... 34 Blade Guide Bearings ... 35 Electrical Components ...
Page 5: Introduction
INTRODUCTION Foreword 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 met- alworking 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...
Page 6: Machine Data Sheet
�� G9743 7" x 12" Metal-Cutting Bandsaw �� ...
Page 7 �� G9743 7" x 12" Metal-Cutting Bandsaw �� ...
Page 8: Identification
B. Guide Post Adjustment Knob C. Coolant Control Valve D. Blade E. ON/OFF Switch ⁄ HP Motor G. Speed Control Knob H. Feed Rate ON/OFF Valve Workstop Identification Figure 1. Main view of machine features. G9743 7" x 12" Metal-Cutting Bandsaw...
Page 9: Section 1: Safety
NOT safety glasses. 3. ALWAYS WEAR AN NIOSH APPROVED RESPIRATOR WHEN MACHINERY THAT PRODUCES DUST. G9743 7" x 12" Metal-Cutting Bandsaw 4. ALWAYS USE HEARING PROTECTION WHEN MACHINERY. Machinery noise can cause permanent hearing damage.
Page 10 Make sure you know what type of dust you will be exposed to and always wear an approved respirator. ADJUSTING KEYS DAMAGED PARTS LOCK MOBILE BASES USED) BEFORE OPERATING G9743 7" x 12" Metal-Cutting Bandsaw...
Page 11: Safety Instructions For Metal Cutting Bandsaws
No list of safety guidelines can be complete. Every shop environment is different. Like all machines there is danger associated with the Model G9743. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this machine with respect and caution to lessen the possibility of operator injury.
Page 12: Section 2: Circuit Requirements
220V Circuit Breaker ... 15 Amps -10- Wiring for 220V The Model G9743 can be rewired to operate on a 220V power source. The motor must be rewired according to the wiring diagram on the motor label. The wiring configuration can also be found on the inside of the motor wire cover, as well as on Page 39.
Page 13: Grounding
If the plug will not fit the outlet, have the proper outlet installed by a qualified electrician. G9743 7" x 12" Metal-Cutting Bandsaw Extension Cords We do not recommend the use of extension cords. Instead, arrange the placement of your equipment and the installed wiring to eliminate the need for extension cords.
Page 14: Section 3: Set Up
An Assistant ... 1 • Phillips Head Screwdriver #2 ... 1 The Model G9743 was carefully packed when it left our warehouse. If you discover the machine is damaged after you have signed for delivery, please immediately call Customer Service at (570) 546-9663 for advise.
Page 15: Inventory
—Hex Bolts ⁄ -18 x 1 ⁄ ... 6 —Hex Nuts ⁄ -18 ... 6 —Flat Washers ⁄ ... 12 —Wire Nuts ... 2 —Thumb Screw ... 1 G9743 7" x 12" Metal-Cutting Bandsaw Figure 3. Loose parts inventory. -13-...
Page 16: Hardware Recognition Chart
Hardware Recognition Chart -14- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 17: Clean Up
Take precautions from this hazard by only using cleaning solvents in a well ventilated area. G9743 7" x 12" Metal-Cutting Bandsaw Site Considerations Floor Load The weight and footprint size for your machine is located in the machine data sheet. Most floors are suitable for your machine.
Page 18: Shipping Bracket
Figure 6. Installing work stop rod. Thread the thumb screw into the work stop and slide the work stop over the rod as shown in Figure 7. Thumb Screw Work Stop Figure 7. Work stop installed. Tighten the thumbscrew. G9743 7" x 12" Metal-Cutting Bandsaw...
Page 19: Wheels
Insert a cotter pin into the axle, and spread the pin to secure the wheel. Install the opposite wheel, repeating Steps 1–4. G9743 7" x 12" Metal-Cutting Bandsaw Chip Screen The chip screen is designed to prevent chips and cut-offs from entering the coolant tank.
Page 20: Test Run
Step-by-step instructions on verifying these adjust- Dial ments can be found in SECTION 7: SERVICE ADJUSTMENTS. Factory adjustments that should be verified: 1. Blade Tracking (Page 33). 2. Squaring the Blade (Page 34). 3. Blade Guide Bearings (Page 35). G9743 7" x 12" Metal-Cutting Bandsaw...
Page 21: Section 4: Operations
G9743 7" x 12" Metal-Cutting Bandsaw Vise The vise on the Model G9743 has a positive lock- ing feature that improves productivity by open- ing the vise jaws just enough to slide material through.
Page 22: Blade Speed
Lock Nut Figure 14. Vise jaw lock-nut. -20- " hex wrench. The Model G9743 has these three blade speeds: 148, 216, and 282 FPM. 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.
Page 23: Blade Selection
We suggest you do some research for your spe- cific situation so you get the best blade to match your needs. Grizzly is proud to offer a variety of selections that can be found in the current catalog and in SECTION 5: ACCESSORIES on Page 26.
Page 24: Cutting Fluid
Make sure that the pressure is not so high that coolant spills on the floor and creates a slipping hazard. Figure 18. Coolant control valve. Turn the pump toggle switch ON before mak- ing your cut. -22- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 25: Blade Guides
To adjust the blade guides: Loosen the knob shown in Figure 19 and slide the rear blade guide as close to the workpiece as possible, then tighten the knob. G9743 7" x 12" Metal-Cutting Bandsaw Blade Guides Knob Figure 19. Blade guides. -23-...
Page 26: Feed Rate
Optimum speed and feed rate. Chips are silvery, thin, small, or powdery: Increase feed rate. Chips are large, curled, blue or brown, or smoking: Decrease feed rate. Figure 22. Reading chip characteristics. G9743 7" x 12" Metal-Cutting Bandsaw...
Page 27: Operation Tips
• Adjust the blade guides as close as possible to the workpiece to minimize side-to-side blade movement. • Use coolant when possible to increase blade life. G9743 7" x 12" Metal-Cutting Bandsaw Work Stop Figure 24. Proper starting position. -25-...
Page 28: Section 5: Accessories
Can be used in light or heavy machining Mix with water, 1:21 for general use or 1:11-1:16 for heavy use. Figure . G7897 Machining Fluid. G9743 7" x 12" Metal-Cutting Bandsaw ™...
Page 29 H1300 G7984 H2347 Figure 29. Our most popular safety glasses. G9743 7" x 12" Metal-Cutting Bandsaw H1302—Standard Earmuffs H4979—Deluxe Twin Cup Hearing Protector H4977—Work-Tunes Radio Headset Earmuffs Protect yourself comfortably with a pair of cush- ioned earmuffs. Especially important if you or employees operate for hours at a time.
Page 30: Section 6: Maintenance
Annual Check: • Change gear box oil (every three months if being used daily). Cleaning Cleaning the Model G9743 is relatively easy. After using your bandsaw, remove excess chips by sweeping and remove any excess coolant with a dry towel. -28-...
Page 31: Maintenance Log
Maintenance Log Date Maintenance Performed Approximate Hours Of Use -29- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 32: Section 7: Service
8. Correct motor wiring connections. 9.Clean off motor, let cool, and reduce workload. 10.Test/repair/replace. 1. Replace dented fan cover; replace loose/dam- aged fan. 2. Replace/resharpen blade. 3. Rebuild gearbox for bad gear(s)/bearing(s). 4. Change blade and or speed. G9743 7" x 12" Metal-Cutting Bandsaw...
Page 33: Bandsaw Operations
3. The blade tension is low. 4. The blade is dull. 5. The blade speed is wrong. G9743 7" x 12" Metal-Cutting Bandsaw CORRECTIVE ACTION 1. Refer to Feed Rate on Page 24, or Changing Blade Speed on Page 20, and adjust as required.
Page 34: Blade Change
Figure 36. Blade cutting direction. When the blade is around both wheels, adjust the position so the back of the blade is against the shoulder of the wheels. G9743 7" x 12" Metal-Cutting Bandsaw...
Page 35: Blade Tracking
Open the wheel access cover. Loosen, but do not remove the lower cap screw in the blade wheel tilting mechanism (Figure 37). G9743 7" x 12" Metal-Cutting Bandsaw Tracking Set Screw Lower Cap Screw Figure 37. Adjusting tracking set screw.
Page 36: Blade Tension
Blade Tension 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. Two major signs that you do not have proper blade tension are: 1) the blade stalls in the cut and slips on the wheels, and 2) the blade frequently breaks from being too tight.
Page 37: Blade Guide Bearings
Hex Nut Backing Bearing Carbide Blade Guide Figure 39. Blade guide adjustments. G9743 7" x 12" Metal-Cutting Bandsaw To adjust the blade guide bearings: UNPLUG THE BANDSAW! Raise the bandsaw to the highest position and close the feed rate ON/OFF valve.
Page 38: Electrical Components
Electrical Components Figure 40. Circuit breaker. Figure 43. Coolant pump ON/OFF Switch. Figure 41. Bandsaw ON and E-Stop Switches. Figure 44. Pump junction box. Figure 42. Auto-shutoff switch. -36- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 39 Electrical Components Circuit Breaker Motor Spark Arrestor Capacitor Figure 45. Motor wiring inside junction box. To Auto-Shutoff Switch To ON/OFF Switch To Pump To Jct. Box To Power Source Figure 46. Contactor wiring. -37- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 40: 110V Wiring Diagram
�� G9743 7" x 12" Metal-Cutting Bandsaw �...
Page 41: 220V Wiring Diagram
�� G9743 7" x 12" Metal-Cutting Bandsaw �� ...
Page 42: Parts Breakdown
�� G9743 7" x 12" Metal-Cutting Bandsaw...
Page 43 �� G9743 7" x 12" Metal-Cutting Bandsaw Head �� 300-10 �� ...
Page 44 �� G9743 7" x 12" Metal-Cutting Bandsaw...
Page 45 �� G9743 7" x 12" Metal-Cutting Bandsaw Gearbox �� ...
Page 46: Safety Label Placement And Parts List
Electrical Box �� -44- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 47: Parts List
HEX BOLT 5/16-18 X 3/4 PLW01 LOCK WASHER 5/16 PN08 HEX NUT 3/8-16 P4030164 CYLINDER PSB29 CAP SCREW 3/8-16 X 2-1/4 PLW04 LOCK WASHER 3/8 G9743 7" x 12" Metal-Cutting Bandsaw Parts List PART # P9743067 P9743068 PN08 PB03 PW07 P9743072 PB03 PLW01...
Page 48 P9743315 315-1 P9743315-1 315-2 P608 315-3 PR40M P9743316 G9743 7" x 12" Metal-Cutting Bandsaw DESCRIPTION DRIVE BLADE WHEEL SET SCREW 1/4-20 X 3/8 EXT RETAINING RING 25MM FLAT WASHER 3/8 HEX BOLT 3/8-16 X 1-1/4 ADJUSTABLE BRACKET ASSY ADJUSTABLE BRACKET...
Page 49 LIMIT SWITCH CORD P9743503 MOTOR CORD P9743606 READ MANUAL LABEL P9743607 SAFETY GLASSES LABEL P9743608 UNPLUG LABEL G8588 GRIZZLY LOGO PLATE G9743 7" x 12" Metal-Cutting Bandsaw Parts List PART # P9743610 610-1 P9743610-1 P9743611 P9743750 750-1 PS06 750-2 P9743750-2...
Page 50 The machine owner MUST maintain the original label location and readability. If a label is removed or becomes unreadable, REPLACE the label before using the machine. For new labels, contact Grizzly Industrial Inc. at (570) 546-9663 or -48-...
Page 51 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.
Page 52 -50- G9743 7" x 12" Metal-Cutting Bandsaw...
Page 53: Warranty Card
Do you think your machine represents a good value? Would you recommend Grizzly Industrial to a friend? 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.
Page 54 FOLD ALONG DOTTED LINE FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend: GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069 Name_______________________________ Street_______________________________ City______________State______Zip______ TAPE ALONG EDGES--PLEASE DO NOT STAPLE Place Stamp Here...
Page 56 Buy Direct and Save with Grizzly Visit Our Website Today And Discover Why • • • – Trusted, Proven and a Great Value! ® Grizzly Is The Industry Leader! ® SECURE ORDERING ORDERS SHIPPED WITHIN 24 HOURS E-MAIL RESPONSE WITHIN ONE HOUR...

Grizzly G9743 Owner's Manual

Introduction

Section 1: Safety

Section 2: Circuit Requirements

Section 3: Set up

Section 4: Operations

Section 5: Accessories

Section 6: Maintenance

Section 7: Service

Warranty and Returns

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Summary of Contents for Grizzly G9743

Table of Contents