Adjusting Gibs - Grizzly G0727 Owner's Manual

Adjusting Gibs

The Model G0727 uses plate gibs that allow for
adjustment of the play or accuracy of the sliding
components.
The goal of adjusting the gibs is to remove sloppi-
ness in the sliding surfaces without over-adjusting
them to the point where movement becomes stiff
and difficult.
In general, loose gibs cause poor finishes and tool
chatter. However, over-tightened gibs cause pre-
mature wear on the sliding surfaces, leadscrew
and nut, and cause hesitation in movement when
using the handwheels.
The gib adjustment process usually requires some
trial-and-error. Test the feel of the component by
moving it back and forth, then, if necessary, adjust
the screws that hold the gib in place to make the
movement tighter or looser. Repeat the adjust-
ment process as necessary until you find the best
balance between loose and stiff movement.
Most machinists find that the ideal gib adjustment
is one where a small amount of drag or resistance
is present yet the handwheels are still easy to
move.
Before you begin adjusting the gibs, make sure
the locks are loose, the ways are free of chips and
grime, and the sliding surfaces are well lubricated
so they can move smoothly.
Figure 42. X-axis gib.
-32-
Gib Set
Screw (1 of 4)
X-Axis
Gib
Gib Set
Screw (1 of 4)
Figure 43. Y-axis gib.
Figure 44. Z-axis gib.
Gib
Set Screws
Figure 45. Ram gib.
Model G0727 (Mfg. Since 7/11)
Y-Axis
Gib
Z-Axis
Gib
Gib Set
Screws
Ram Gib