Spindle Height

Controls

The spindle height is controlled by the quill feed lever and the fine feed knob.

Fine Feed

Quill Feed

Knob

Lever

Spindle

 

Height

 

Scale

 

Quill

Fine Feed

lock

Lock

lever

Knob

 

Figure 27. Spindle controls.

Changing Spindle Position Using Quill Feed Levers

1.Unlock the quill lock lever and loosen the fine feed lock knob.

2.Pull down on any of the coarse downfeed levers to adjust the vertical position of the spindle. Observe the spindle height scale or digital readout to monitor movement in inches or millimeters.

Tip: Milling with the spindle fully extended can cause tool chatter. For maximum spindle rigidity when milling, it is better to keep the spindle retracted into the headstock as far as possible with the spindle lock and the downfeed selector knob tightened.

Changing Spindle Position Using Fine Feed Knob

1.Unlock the quill lock lever and tighten the fine feed lock knob.

2.Rotate the fine feed knob to lower or raise the spindle in small increments. Observe the scale on the knob or the digital readout to monitor movement in thousandths of an inch (Figure 28).

Fine Feed

Fine Feed

Quill Feed

Scale

Lock

Lever

 

Knob

 

 

Quill

 

 

lock

Fine Feed

lever

Knob

 

 

 

Figure 28. Fine spindle feed controls.

3.Tighten the quill lock lever to hold the spindle in a particular position if you choose.

Tip: Milling with the spindle fully extended can cause tool chatter. For maximum spindle rigidity when milling, it is better to keep the spindle retracted into the headstock as far as possible with the quill lock lever tightened, and the fine feed knob tightened.

-28-

Model G0704 (Mfg. Since 08/11)

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Grizzly G0759 owner manual Spindle Height Controls, Changing Spindle Position Using Quill Feed Levers