5-5
Preventive Maintenance
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Ballscrew Ballnuts
The ballnuts are located on the crosshead where the ballscrews intersect with the crosshead.
To lubricate the ballscrew ballnuts:
1. Turn the power switch to the Off (
O) position and disconnect the power cable from the
main power source. Verify that the
POWER indicator light is not illuminating.
2. Detach the bottom ballscrew cover from the crosshead and slide it to the frame base.
Refer to Figure 5-1 on page 5-6 to locate the ballnut nipple inside the column cover.
3. Use a grease gun to apply the grease through the ballnut nipples on both columns as
shown in Figure 5-1. It is not necessary to remove the guide column covers.
4. Fill the ballnuts until grease begins to ooze from the top of the nut. Wipe away the
excess grease.
5. Re-attach the bottom ballscrew cover to the crosshead.
6. Re-connect the power cable to the main power source and turn the power switch to the
On (
I) position. Verify that the POWER indicator light illuminates.
7. Use the jog controls to move the crosshead over the full stroke of the frame to distribute
the grease in the ballnut and coat the ballscrew shaft. The
TEST IN PROGRESS
indicator light illuminates when the crosshead is moving.
Rotating Machinery Hazard - Disconnect power supplies before removing the
covers to rotating machinery.
Disconnect equipment from all power supplies before removing any cover which gives
access to rotating machinery. Do not reconnect any power supply while the covers are
removed. Refit covers as soon as possible.
Entanglement Hazard - Keep hair and loose clothing clear of the ballscrews
during this procedure.
This procedure requires that you remove the bottom ballscrew cover, exposing a section
of the ballscrew. Ensure that the power supply is disconnected during the procedure and
reinstall the ballscrew covers immediately after the procedure is completed.
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