Grizzly VS MILLING MACHINE G0669X - Manual (Page 48)

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g0669X precision 10" x 54" Vs Milling Machine
Adjusting Gibs
gibs control the accuracy of table and ram move-
ments along the ways. tight gibs make the move-
ments more accurate, but harder to move. Loose
gibs make the movements sloppy, but easier to
move. the goal of gib adjustment is to remove
unnecessary sloppiness without causing the ways
to bind.
NOTICE
Excessively loose gibs may cause poor
workpiece finishes, and may cause undue
wear of sliding surfaces and ways. Over-
tightening the gibs may cause premature
wear of these sliding devices.
table, Saddle, and Knee Gibs
each sliding surface for the table, saddle, and
knee has a tapered gib that is sandwiched
between the stationary and moving surfaces. the
saddle and knee have a gib on both sides of the
device. there are two adjustment screws, one on
each end of each gib, that move the tapered gib
back and forth increasing or decreasing friction of
the sliding surfaces.
disConneCt the MiLL FroM poWer
BeFore adJUsting the giBs!
Loosen one adjustment screw and tighten the
other the same amount to move the gib until you
feel a slight drag in that path of movement.
refer to figures 62–64 for the locations of the
table, saddle, and knee gib adjustment screws.
figure 62. table gib adjustment screw (view of
left screw).
table gib
adjustment screw
(1 of 2)
figure 63. saddle gib adjustment screw (view of
right front screw).
saddle gib
adjustment screw
(1 of 4)
figure 64. Knee gib adjustment screw (view of
right top screw).
Knee gib
adjustment screw
(1 of 4)