Grizzly G7211, G7212 instruction manual Changing Speeds, Backing off lock bolt

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Changing Speeds

The G7211/G7212 24" Bandsaw provides two speeds, 2800 and 3500 FPM, to make cutting easier. In many applications, blade speed is a matter of personal preference. Usually the higher speed will produce the best results, but if the motor is straining while cutting, try a slower blade speed. Blade speed is also affected by the type of wood, denser woods need a different speed than a softer, lighter wood. Ultimately blade speed is a matter of trial and error. Whenever possible test the cut on a scrap piece first to gauge how well the blade is cutting at the selected speed.

To change bandsaw speeds:

1. Turn the bandsaw power switch off and dis- connect from power source.

2.Use a 9Ú16" open end wrench to loosen the lock nut and lock bolt on the lock system. See Figure 11. This provides room to turn the adjuster nut.

3.Use a 3Ú4" box wrench to loosen the adjuster nut. Loosen as needed to allow the shaft to move. See Figure 12.

4.Select the pulleys for the speed desired. The rear or smaller motor pulley provides the slower, 2800 FPM, speed, while the front pulleys are for the faster 3500 FPM speed.

See Figure 13.

5.Move the V-belt to the pair of pulleys which provide the desired speed.

6. Tighten the belt by sliding the adjuster nut and shaft up or down as needed.

7. Tighten the adjuster nut.

8.Bring the lock bolt head snug against the adjuster nut. Tighten the lock nut.

G7211/7212 24" Bandsaw

Figure 11. Backing off lock bolt.

Figure 12. Loosening the adjuster nut.

Figure 13. View of pulleys behind lower wheel. -17-

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Contents Model G7211/G7212 BandsawPage Table Of Contents Safety Instructions For Power Tools SafetyAMP Rating Additional Safety Instructions For Bandsaws Circuit Requirements Wiring Diagram220V Operation Extension Cords Phase Operation Commentary IntroductionUnpacking Bandsaw Assembly Fence Assembly Miter Gauge HardwareParts Inventory Site Considerations Clean UpFence AssemblyTension Wheel AdjustmentsTrackingTension Tracking KnobWheel Alignment Adjusting KnobsUpper Guides Rear Support Bearing Bearing Guides Lock Nuts AssemblyLower Guides Positive Stop Blade Guide Lock Nut Blade Guide AdjusterPositive Table Stop See FigurePre-Run Check OperationsBandsaw Blades Changing Blades Backing off lock bolt Changing SpeedsRipping Stacked Cuts Resawing Cutting CurvesTableV-Belts MaintenanceLubricationMiscellaneous Closure Machine Data Sheet G7211 Parts List Locking Handle G7211/G7212 Parts Diagram G7211⁄G7212 Parts Diagram G7211 Switch Wire Diagram Motor Warranty and Returns Warranty Card BOX BELLINGHAM, WA Grizzly INDUSTRIAL, INC