Model G0808 (Mfd. Since 11/15)
-47-
Adjusting Leadscrew
Backlash
Leadscrew backlash is the amount of motion or
"play" in leadscrew rotation before the attached
device begins to move. Leadscrews will always
have a certain amount of backlash that will
increase with normal wear.
Generally, 0.005"–0.010" leadscrew backlash is
acceptable to ensure smooth movement and
reduce the risk of premature thread wear. However,
if you find it necessary to adjust leadscrew back-
lash, perform the procedures listed below.
Tool Needed
Qty
T-Handle Hex Wrench 5mm .............................. 1
To adjust leadscrew backlash:
Use a 5mm hex wrench to tighten or loosen
the cap screws on the leadscrew nuts shown in
Figures 78–79, then test the amount of backlash
by slowly rocking the handwheels back-and-forth.
Repeat if necessary.
Figure 78. X-axis leadscrew nut located under
right side of table.
X-Axis
Leadscrew Nut
Figure 79. Y-axis leadscrew nut located inside
knee.
Y-Axis
Leadscrew Nut
Gap
Cap
Screws
Gap
Cap
Screws
Summary of Contents for G0808
Page 68: ......
