User guide

Page 21
ServoTube 25/38 Module User Guide
Chapter 3
Maintenance
Note. There is only one bearing carriage on the SB2504 module.
Move the forcer to the other end. Repeat the above steps to re-grease the other bearing carriage. •
Move the forcer by hand to and fro in order to distribute the grease.•
Note. If too much grease has been transferred into the bearing carriages the excess should be cleaned away.
If left, it may interfere with the function of an optional encoder where tted.
Replace the bellows as described on page 25.•
Thrust rod
The thrust rod must be kept clean and central to the forcer bore to avoid damage to the windings inside the forcer.
Check that the thrust rod is centrally aligned by moving the forcer along the entire length of the thrust rod and
observing the gap between the thrust rod and forcer bore.
If the thrust rod is becoming polished in places, this is usually an indication that the forcer is coming into contact
with the thrust rod. Check the surface of the thrust rod for any raised areas that may damage the inside lining of
the forcer. A soft cloth can be used to clean the thrust rod and self adhesive tape can be used to lift off any ferrous
debris that may be attracted to it.
Forcer
Forcers have a uoropolymer inner lining that does not require maintenance. However, when carrying out checks,
a visual inspection should be made to ensure there is nothing trapped in the ends of the forcer.
Cables
Check that all connecting cables are secured and not under strain. Inspect cables for signs of wear.
Encoder (where tted)
The encoder scale should be cleaned with a soft, lint free cloth to remove any oil, grease or dirt. Under no
circumstances must solvents be used on optical encoder scales as the protective lacquer coating may become
damaged.
Bellows
On module systems with bellows (SB25 and XB38), periodically remove any debris from the bellows folds that may
reduce the movement of the forcer.