Siemens SIMOTICS M 1PH8 Configuration Manual page 92

Mechanical properties
4.4 Types of bearing
Note
Difficult operating conditions in operation at n
Under difficult operating conditions, the bearing replacement intervals t
50 %.
Difficult operating conditions include
• large vibrations and shocks
• frequent reversing operation
Note
Reduced maximum motor speeds
The maximum speeds might be reduced on motors with integrated encoder as a result of
mechanical conditions or limitations imposed by signal conditioning capacity.
The reduced maximum speeds can be found in the table "Encoder types for motors with DRIVE-
CLiQ" in Chapter Encoder assignment as a function of maximum permissible speeds (Page 160).
Note
Permanently switching on the sealing air
For the "Premium Performance" bearing version, Siemens recommends that the sealing air be
permanently switched on during continuous operation at n
conditioning are described in Chapter "Sealing air connection (option Q12) (Page 169)."
90
max
LW
. Sealing air connection and
max
1PH8 SIMOTICS M main motors
Configuration Manual, 12/2022, A5E51895839A
are reduced by up to