Grizzly g0747, g0748 owner manual Low Spindle Speed Range

6.loosen the two motor lock levers, one on each side of the head, then pull the belt ten- sion adjustment lever forward to release the V-belt tension.

7.refer to the illustrations in Figure 30, and position the V-belt on the pulleys for the desired spindle speed.

Low Spindle Speed Range
Spindle Switch @		Motor
FLOW/RLOW
	80
	135
	210
	325
Spindle	Spindle
	Switch @
		Motor
	FHI/RHI
	160
	270
	420
	650
Spindle
High Spindle Speed Range
Spindle Switch @		Motor
FLOW/RLOW
	660
	1115
	1750
	2720
Spindle	Spindle
	Switch @	Motor
	FHI/RHI
	1320
	2230
	3500
	5440
Spindle

Figure 30. Model G0747 V-belt positions. -34-

Note: As displayed in Figure 30, the Model G0747 has two spindle speeds for each V-belt position depending on the spindle switch setting.

8.to re-tension the V-belt, push the adjustment lever backward with moderate force, then re-tighten the two lock levers to secure the motor.

9.replace the two belt housing side covers before re-connecting the mill to power.

To avoid entanglement hazards, always ensure belt housing safety covers are firmly in place before connecting the mill to power.

10.Use the chart below to find the spindle speed range that includes the required spindle speed for your operation and set the spindle switch (Figure 31) accordingly.

Model G0747 Spindle Speed Ranges

Low Range	80–325 RPM
w/Switch @ FLOW/RLoW
Low Range	160–650 RPM
w/Switch @ FHI/RHi
High Range	660–2720 RPM
w/Switch @ FLOW/RLoW
High Range	1320–5440 RPM
w/Switch @ FHI/RHi

Figure 31. Model G0747 spindle switch.

Model G0747/G0748 (Mfg. Since 8/12)