Hypertherm PHC Sensor - Manual (Page 56)

56
Sensor™ PHC Operation and Setup Guide
Lubricant
For the linear bearing carriage and ball screw, the bearing manufacturer suggests grease with the following
characteristics:
1. Lithium soap-based grease
2. NLGI Grade 2
3. No metallic particles in the grease.
Examples of compatible lubricants:
• Mobil-1 Synthetic grease and is available at most Auto Parts Stores.
• Mobilith SHC220 is another example that should be available at an industrial supply such as McMaster-
Carr.
The linear bearing carriage uses a grease fitting and the ball screw lubricant is applied to the screw itself:
To lubricate the THC slide:
1. Position the lifter approximately at the top of stroke.
2. Press the E-stop on the Ti (or power off the PHC).
3. Remove the lifter lower cover.
4. Clean the visible portion of the ball screw and bearing rails with a clean dry cloth.
5. Enable the Ti (or PHC).
6. Slew to the bottom of the stroke.
7. Press the E-stop on the Ti (or power off the PHC).
8. Clean the visible portion of the ball screw and bearing rails with a clean dry cloth.
9. Repeat several times (slewing back and forth to distribute and remove grease/debris).
10. Grease the bearing grease port with a needle-type grease gun.
11. Apply a thin coat of grease to the ball screw threads.
12. Slew back and forth do distribute grease, while checking for binding or erratic movement.
13. Replace cover.
Remove Screws
Cover Removed
Ball screw,
apply grease
directly
Linear bearing
grease port