Replacing Bearings In Explosion-Proof Machines - Siemens SIMOTICS XP 1LA5 Compact Operating Instructions

● Slightly grease the contact surfaces of the sealing lips.
Note
Special operating conditions
The operating hours are reduced, e.g.
When machines are vertically mounted.
•
High vibration and surge loads
•
Frequent reversing operation
•
Higher ambient temperatures.
•
High speeds etc.
•
9.5.1.1

Replacing bearings in explosion-proof machines

● When changing the bearings, renew the sealing rings and only use original
Siemens spare parts.
● For radial sealing rings with dust protection lip (DIN 3760-AS), completely fill the
spaces (100%) in the sealing ring as well as in the bearing shield hub with a
suitable grease.
9.6 Disassembly
Note
Before commencing removal, you should mark how each of the fastening elements
has been assigned, as well as how internal connections are arranged. This simplifies
subsequent reassembly.
Fan
NOTICE
Destruction of the fan
Material damage can occur by forcefully removing the fan from the shaft.
Take care not to damage the snapping mechanisms on fans that are equipped with
these.
Plastic fan
● Correctly expose the breakout openings provided in the fan plate
● Heat up the fans to a temperature of approximately 50 °C around the area of the
hub.
● Use a suitable tool to pull off the fan (puller).
Explosion-protected machines
56100000002002, 01/2016
Maintenance
141