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Gib Adjustment
The goal of adjusting the gib screws is to remove
sloppiness or “play” from the ways without over-
adjusting them to the point where they become
stiff and difficult to move.
In general, loose gibs cause poor finishes and
inaccurate tapers; however, over-tightened gibs
cause premature wear and make it difficult to
move the carriage and cross slide.
Internal Gib
The internal gib is tapered and held in position
by a screw at each end (see Figure 29). To
adjust this gib, turn one screw
1
⁄4 turn clockwise
and the other screw
1
⁄4 turn counterclockwise,
so both screws move in the same direction and
the same amount. Test the feel of the setting by
moving the carriage, and adjust the gib screws as
necessary to make it tighter or looser.
External Gib
The external gib is wedge-shaped and is held
in position by three set screws (see Figure 30).
To adjust this gib, loosen the hex nuts and turn
the set screws in equal amounts. Test the feel of
the setting by moving the carriage, and adjust
the set screws as necessary to make it tighter or
looser. When satisfied with the movement, re-
tighten the hex nuts to secure the setting.
Figure 29. Internal gib.
Gib Screw
(1 of 2)
Gib
Figure 30. External gib.
Gib
Hex Nuts
& Set Screws
Mfg. Since 9/11 Model SB1263
-13-
INSTRUCTIONS