Assessing The Rolling Bearings; Regreasing Intervals And Types Of Grease For Operating Rolling Bearings - Siemens SIMOTICS XP 1MB5 Operating Instructions Manual

Maintenance
9.3 Inspection and maintenance
9.3.8

Assessing the rolling bearings

To assess the rolling bearings, it is generally not necessary to dismantle the machines. The motor
only has to be dismantled if the bearings are to be replaced.
The state of a rolling bearing can be assessed by analyzing the bearing vibration. The
measured values provide an indication and can be assessed by specialists. In this case,
contact the Service Center (Page 12).
9.3.9

Regreasing intervals and types of grease for operating rolling bearings

The specified grease data applies to the data specified on the rating plate and for high-quality
grease in accordance with the specifications in these operating instructions. Because these
greases exceed significantly the requirements according to DIN 51825 and ISO 6743‑9, they
permit the specified relubrication intervals.
Initial lubrication
The grease specified on the lubricant plate is selected according to the operating conditions
known at the time of ordering and should be used for initial lubrication.
Criteria for selecting rolling bearing greases
High quality ISO‑L‑X BDEA3 lubricating grease according to ISO 6743-9 and K3K‑20 lubricating
grease according to DIN 51825 with lithium soap as a thickener and an upper service
temperature of at least +130° C / +266° F are permissible for standard applications without
special requirements.
• The technical data of the rolling bearing grease must be suitable for the application.
• Only use the grease type that is specified on the lubricant plate.
• If the operating conditions differ from those mentioned, other lubricating greases may only
be used after prior consultation with the manufacturer.
• If lubricating greases other than those named on the lubricant plate are used, it cannot be
guaranteed that they are compatible with the complete system.
– If you use lubricating greases that satisfy only the minimum requirements of DIN 51825
– If in doubt, consult the manufacturer.
• The lubrication properties will be impaired if you mix different lubricating greases. This can
result in material damage. Only the manufacturer can provide a guarantee for the miscibility
of particular lubricating greases.
• The lubricating grease must satisfy the criteria listed in the table below and must match the
operating conditions. If different special lubricating greases are stated on the lubricant plate,
then different criteria apply.
116
or ISO 6743-9, then reduce the lubrication intervals by half or adapt them as appropriate.
1MB5 shaft height 400/450
Operating Instructions, 04/2023, A5E52802354A