Model G0776 (Mfd. Since 7/14)
-77-
Adjusting Backlash
Backlash is the amount of play in a leadscrew
and can be felt as the free play in a handwheel
when changing direction of rotation. The amount
of the backlash can be viewed on the handwheel
micrometer-collar graduated dial.
When adjusting backlash, tighten the components
enough to remove backlash, but not so much that
the components bind the leadscrew, making it
hard to turn. Overtightening will cause excessive
wear to the sliding block and leadscrew.
Tools Needed Qty
Hex Wrench 2, 5mm ....................................1 Ea.
Figure 130. Leadscrew nut (viewed from back of
machine).
4. Test after each adjustment by rotating
handwheel back-and-forth until backlash
amount is acceptable.
5. Re-install backsplash.
Backlash
Adjustment
Set Screws
Leadscrew
Nut
To adjust cross slide backlash:
1. Feed cross slide toward back of machine until
it reaches end of its travel.
2. Remove backsplash to access leadscrew
nut.
3. Tighten backlash adjustment set screws
shown in Figure 130 in small increments.
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