SIEMENS
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Siemens D 84.9 · 2015
1
Introduction
Overview of bearing versions
■
Overview
Bearing version
Motors for connection to the line supply have anti-friction bear-
ings or sleeve bearings as standard according to the following
overview.
The bearing concepts for motors for converter operation depend
on the speed control range.
Overview, bearing versions
Assignment, type of construction and anti-friction bearing type
For motors with sleeve bearings, lateral flanges are used. Gen-
erally, these motors are equipped with two floating bearings.
This means that the rotor must be axially guided by the bearings
of the driven machine through a coupling with limited axial play.
An appropriate sleeve bearing can be installed at the drive end
if the motor rotor is to be axially guided.
Bearing version
IM B3, IM B35
IM V1
Number of poles 2
Number of poles
≥
4
Number of poles
≥
4
Motor type
50 Hz/60 Hz
50 Hz/60 Hz
50 Hz/60 Hz
1R.131.
Anti-friction bearings
(sleeve bearings not available)
–
–
1R.135.
Anti-friction bearings
(sleeve bearings not available)
Anti-friction bearings
(sleeve bearings not available)
1R.140.
Anti-friction bearings
(sleeve bearings optional)
1R.145.
1)
1R.150
Sleeve bearings
1R.156
1R.163
Motor series
Type of construction
Shaft height
Drive end
Non-drive end
mm
1R.1
IM B3
315 ... 560
Deep-groove ball bearing
(locating bearing)
Deep-groove ball bearing
(floating bearing)
630
Double bearing:
Deep-groove ball bearing and cylindrical
roller bearing (locating bearing)
Cylindrical-roller bearing
(floating bearing)
IM V1
355
Deep-groove ball bearing
(thrust bearing)
Deep-groove ball bearing
(floating bearing)
400 ... 560
Deep-groove ball bearing
(floating bearing)
Angular-contact ball bearing
(thrust bearing)
630
Deep-groove ball bearing
(floating bearing)
Pair of angular-contact ball bearings
(thrust bearing)
1)
1.R.145.-2 (60 Hz) only available with sleeve bearings
© Siemens AG 2015