Adjusting Leadscrew Backlash - Grizzly G0757 Owner's Manual

Adjusting Leadscrew
Backlash
Leadscrew backlash is the amount of free play
movement in the leadscrew (when the leadscrew
moves but the table does not) after changing the
direction of rotation.
A leadscrew must have a certain amount of back-
lash to rotate easily, but over time, it increases
with wear. Generally, 0.003"–0.006" leadscrew
backlash is acceptable to ensure smooth move-
ment and reduce the risk of premature thread
wear.
The X-axis leadscrew backlash is adjusted using
a long 4mm hex wrench to tighten/loosen the cap
screws on the leadscrew nut. This adjusts the
force the leadscrew nut exerts on the leadscrew
threads.
Model G0757 (Mfg. Since 6/13)
The X-axis leadscrew nut shown in Figure 71 is
accessed from underneath the right side of the
table.
X-Axis Leadscrew Nut
Cap Screws
Figure 71. Location of X-axis leadscrew nut cap
screws for adjusting backlash.
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