Grizzly G0484 Spindle Height Control, Table Travel X-Axis and Y-Axis, Headstock Travel Z-Axis

Spindle Height

Control

Spindle height is changed by unlocking the quill lock lever and the fine feed knob, and using the quill feed handles or the fine feed knob (Figure 12). The spindle scale indicates the spindle height in inches and millimeters.

To change the spindle position:

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

2.Pull down on the quill feed levers to lower or raise the spindle. Lock the quill lock to hold the spindle in a particular position if you choose.

3.Tighten the fine feed lock knob and use the fine feed knob if you like.

Tip: Milling with the quill fully extended, can cause tool chatter. For maximum spindle rigidity when milling, keep the spindle retract- ed into the headstock as far as possible, lock the headstock and quill lock levers, and tighten the fine feed lock knob.

Spindle Scale	Quill Feed Lever
Fine Feed Knob
Quill Lock Lever	Fine Feed Lock Knob

Figure 12. Spindle controls.

Table Travel (X-Axis

and Y-Axis)

Longitudinal Feed

The longitudinal feed, or X-axis, is moved by the handwheel at the right end of the table. The handwheel will move the table in both direc- tions side-to-side. One complete revolution of the handwheel moves the longitudinal feed 0.100". There is also a scale on the front of the table for use when a tight tolerance is not required.

Cross Feed

The cross feed, or Y-axis, is moved with the handwheel on the front of the table base. One complete revolution of the handwheel moves the cross slide 0.100".

Headstock Travel

(Z-Axis)

The vertical headstock travel, or Z-axis travel, is controlled by the lift motor or the manual head- stock crank on the right side of the column. This coarse travel is only used to position the head- stock in the spindle-travel range. Precise incre- mental movement is available by using the feed levers or the fine feed handwheel.

G0484 Gear Head Mill/Drill -17-