6
Inspection/maintenance
Wearing parts
Assembly and Operating Instructions – Explosion-Proof Gear Units
110
Due to the various influencing factors it is not possible to predict the service life.
Therefore the oil seals must be inspected regularly. Observe the corresponding in-
spection and maintenance intervals in the chapters
),
"
Lubricant change intervals" (→
112), and "AD input shaft assembly maintenance" (→
117).
Cam ring/
coupling ring
The couplings used in the AM, AL, and AQ. adapters are designed to be positive,
puncture-proof and low-maintenance claw couplings. They have a an impact and vi-
bration-absorbing cam ring (AM) or coupling ring (AQ., AL). The service life of cam
ring/coupling ring is influenced by various factors. These are, among other things:
•
Ambient conditions (temperature, chemicals, radiation)
•
Operational conditions (switching frequency, impact characteristics)
Adhere to the corresponding inspection and maintenance intervals in chapter
tenance of AL/AM/AQ. adapter" (→
112).
Rubber buffer
The rubber buffer is required for shaft-mounted gear units of type F for torque support.
Rubber buffers are wear parts with a service life that is influenced by the following
factors:
•
Load
•
Ambient conditions
– Temperature
– Humidity
– Aggressive chemicals, e.g. ozone
•
Switching frequency
•
Impact characteristics
Flexible
bushing
A so-called flexible bushing is required for the torque arm of the S and K gear unit
types. Flexible bushings are wear parts with a service life that is influenced by the fol-
lowing factors:
•
Load
•
Ambient conditions
– Temperature
– Humidity
– Aggressive chemicals, e.g. ozone
•
Switching frequency
•
Impact characteristics
24804134/EN – 05/2018
