Subject to change without notice!
EN
HYDRA PLUS UD300 CAR DOOR
Code
Version
Code
Version
Date
Page
GM.2.002668.EN
B
3201.32.0397
B
04.02.2013
26.37
Fig. 1
Bearing
not
Slide
Eccentric
lower roller
Top roller
Bearing
Slide
Eccentric
lower roller
Top roller
Fig. 2
17. SLIDING ROLLERS
The design of the top rollers race is different from the guide’s so that they do not sit at the race centre (see Fig. 1).
These rollers should be replaced because worn out when a contact marking with the guide at the race bottom is noticed (see Fig. 2).
Other factors that indicate the need for roller replacement are:
- Excessive noise of the bearing (caused by the penetration of dirt between the balls).
- Excessive noise due to eccentric deformation (normally this occurs when the doors stand still for long periods of time).
Without any of the above listed problems we suggest to change the upper and lower rollers every 7 years.