Grizzly g0747, g0748 owner manual Adjusting Leadscrew Backlash, Axis Leadscrew Backlash

Adjusting Leadscrew

Backlash

Leadscrew backlash is the amount of motion the leadscrew rotates before the attached device begins to move.

Leadscrews will always have a certain amount of backlash that will increase with normal wear. Generally, 0.005"–0.010" leadscrew backlash is acceptable to ensure smooth movement and reduce the risk of premature thread wear. However, if you find it necessary to adjust leadscrew back- lash, perform the procedures listed below.

Tools Needed	Qty
T-Handle Hex Wrench 5mm	................................ 1
Hex Wrench 3mm	2
Hex Wrench 8mm	1
Wrench 19mm	1

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X-Axis Leadscrew Backlash

1.DISCONNECT MILL FROM POWER!

2.loosen the two cap screws on the X-axis leadscrew nut accessed from underneath the left side of the table (see Figure 65).

Cap Screws

Figure 65. X-axis leadscrew nut cap screws (viewed from underneath left side of table).

3.rotate the adjustment plate on the leadscrew nut in small increments, then check the amount of backlash.

4.When you are satisfied with the adjustment, re-tighten the two cap screws.

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