-32-
Model G0678 (Mfd. Since 06/15)
Adjusting Backlash
Leadscrew backlash is the amount of motion the
leadscrew rotates before the device begins to
move. Leadscrews always have a certain amount
of backlash that will increase with wear. Generally,
0.005"–0.010" of backlash is acceptable.
The backlash of the longitudinal and cross
leadscrew can be adjusted by changing the gap
in the leadscrew nuts (see
Figures 44–45).
Use a 5mm hex wrench to tighten or loosen
the cap screws on the leadscrew nuts shown in
Figures 44–45, then test the amount of backlash
by slowly rocking the handwheels back-and-forth.
Figure 44. Longitudinal leadscrew nut.
Longitudinal
Leadscrew Nut
Gap
Gap
Cap
Screws
Cap
Screw
Figure 45. Cross leadscrew nut.
Gap
Gap
Cap
Screws
Cap
Screw
Cross
Leadscrew Nut
