Siemens SIMOTICS XP 1MB5 SH400, Operating Instructions Manual, Page: 27 / 166

The machines are equipped with different types of rolling bearings depending on the version
and the operating conditions described in the order.
Table 3-4 Rolling bearing versions
Horizontal type of construction,
coupling output
● DE: Deep-groove ball bearing as fixed bearing
● NDE: Deep-groove ball bearing as floating bearing with axial
springs
Horizontal type of construction, for
increased transverse forces e.g. in
the case of belt coupling
● DE: Cylindrical rolling bearing as floating bearing
● NDE: Deep-groove ball bearing as fixed bearing
Vertical type of construction
● DE: Pairing of angular-contact ball bearing / deep-groove ball
bearing as fixed bearing
● NDE: Deep-groove ball bearing as floating bearing with axial
springs
3.3.3 Type of construction
The type of construction of the machine is stated on the rating plate.
3.3.4 Degree of protection
The machine has a type of protection as stamped on the rating plate, and can be installed in
dusty or humid environments.
3.3.5 Environmental conditions
Table 3-5 Limit values for the ambient conditions for standard motors
Ambient temperature -20 °C ... +40 °C
Installation altitude ≤1000 m above sea level
Air with normal oxygen content, usually 21 % ( V / V )
If the environmental conditions are different from the details listed here, then the values on the
rating plate or in the catalog will apply.
Description
3.3 Structure
1MB5 SH 400/450
Operating Instructions, 05/2019, A5E45959221A
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