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-27-G4015Z Lathe/Mill
SECTION 8: ADJUSTMENTS
Compound Gib - The gib on the compound has
2 setscrews to maintain tension on the slide.
These setscrews are held in place with retaining
nuts. To adjust, loosen the retaining nuts and
then tighten the setscrews as needed. When
proper tension has been detected by turning the
hand crank on the compound, tighten the retain-
ing nuts while maintaining the position of the
setscrew with an Allen
®
wrench as in Figure 29.
Figure 29. Securing setscrew.
NOTICE
When adjusting gibs, keep in mind that the
goal of gib adjustment is to remove unneces-
sary sloppiness from the slides movement
without causing them to bind. Loose gibs may
cause poor finishes on the workpiece and
undue wear on the slide. Over tightening may
cause premature wear on the slide, Lead
Screw and nut.
Figure 28.Tightening this screw tightens gib.
There are three gib adjustments for the Model
G4015Z. They are: the cross-slide gib, the com-
pound slide gib and the apron gib.
Cross-slide Gib - The gib on the cross-slide is
adjusted by tightening or loosening the 4
setscrews located on the right hand side of the
slide. See Figure 28. The large setscrew in the
middle is used to lock the cross slide in place
during machining operations. Before adjusting
the gib screws, loosen this setscrew.
The gib is held in place by the setscrews. Do not
over tighten. The gib is properly adjusted when a
slight drag is detected while turning the hand
crank. This drag should be evenly distributed
among the 4 setscrews, so adjust each so a
slight drag is detected while the hand crank is
turned. The large setscrew in the middle of the
slide can be tightened to lock the slide in place.
Gibs