Grizzly G0740 owner manual Setting Spindle Speed, Configuration Examples

Setting Spindle Speed

Selecting one of the 16 spindle speeds available is a combination of configuring the two-speed motor switch, the spindle range lever, and the spindle speed lever shown in Figure 69.

	Spindle
Spindle Speed
	Range
Lever
	Lever

Motor

Switch

Figure 69. Spindle speed controls.

The motor switch controls the speed of the spindle motor, either a low speed of 1725 RPm or a high speed of 3450 RPm.

Configuration Examples

Using the controls on the lathe, follow along with these two examples for setting the spindle speed to gain a better understanding of this task.

Setting Spindle Speed of 215 RPM

1.Make sure the spindle is completely stopped and the spindle lever is in the OFF (middle) position.

2.Turn the motor switch (see Figure 69) to the low (left) position.

Note: The green color of the motor switch low position corresponds to the column in the right-hand speed chart with the green header that contains the speed of 215 RPM.

3.move the spindle range lever to the right so that the arrow on top of its hub points toward the right-hand speed chart (see the illustra- tion in Figure 70).

Note: If necessary, use the chuck key to rock the spindle back-and-forth to help mesh the gears as you move the levers.

The spindle speed and range levers control the gear configuration in the headstock to produce the selected spindle speed. The spindle range lever selects speeds in the left- or right-hand speed chart to be available for the spindle speed lever. The spindle speed lever selects one of the speeds available in the active chart and column.

If the spindle is rotating when attempting to change the spindle speed, the headstock gears will suffer damage! ALWAYS make sure the spindle is completely stopped

C

B A D

Spindle Speed

Lever Set To

“B” (215 RPM)

Spindle

Range Lever

Pointing To

Right-Hand

Speed Chart

BEFORE using the headstock control levers to make changes.

Operating the lathe at spindle speeds higher than 315 RPM when the high (H) gearbox range is selected could result in gearbox damage. Always use spindle speeds of 315 RPM or lower when using the high (H) gearbox range.

Model G0740 (Mfg. Since 11/12)

Figure 70. Setting the spindle speed to 215

RPM.

4.Position the spindle speed lever so that the "B" is directly under the arrow on the head- stock.

Note: You will hear a distinctive "click" when the spindle speed lever is in the correct posi- tion.

The lathe is now set for a spindle speed of 215 RPM.

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