Siemens SIMOTICS XP 1MB5 SH400, Operating Instructions Manual

Page: 116 / 166

Grease replacement intervals
The grease replacement intervals in these operating instructions or the regreasing intervals
indicated on the plate apply to the following conditions:
● Normal load
● Operation at speeds in accordance with rating plate
● Low-vibration operation
● Neutral ambient air
● High-quality rolling bearing greases
In the case of unfavorable operating conditions, reduce the relubrication intervals after prior
consultation with the manufacturer.
Regreasing rolling bearings
Regrease the rolling bearings at the latest every 12 months irrespective of the actual number
of operating hours. The regreasing intervals for rolling bearings differ from the service intervals
for the machine. The rolling bearings may be damaged if the relubrication intervals are not
complied with. Pay attention to the instructions on the lubricant plate.
1. Clean the grease nipple.
2. Rotate the shaft when regreasing, so that the new grease can be distributed throughout the
bearing.
Motors that are operated with converters: Regrease the bearings at a low to medium speed
(n
min
= 250 rpm, n
max
= 3600 rpm) to ensure an even distribution of grease.
WARNING
Risk of injury due to rotating parts
The shaft must rotate to allow the grease to be distributed. This can result in death, serious
injury or material damage.
● When regreasing, pay attention to all rotating components.
3. Gradually press in an appropriate type and amount of grease, as stamped on the lubricant
plate and specified in these operating instructions - max. 50 g per 30 min.
The rolling bearing temperature rises sharply at first, then drops to the normal value again
when the excess grease is displaced out of the bearing.
The used grease collects outside each bearing in a spent grease chamber.
Greasing the rolling bearings prior to commissioning
When properly stored prior to commissioning for a longer period of time, normally the grease
in the bearings does not deteriorate within two years.
● When commissioning, the bearings must be relubricated with twice the amount of
lubricating grease. When doing this, the shaft must rotate so that the grease is replaced in
the bearings.
● Carefully observe the information relating to long-term storage.
Maintenance
9.2 Inspection and maintenance
1MB5 SH 400/450
114
Operating Instructions, 05/2019, A5E45959221A