The motors have grease-lubricated ball bearings (life lubricated). The bearings are sealed
at both ends and designed for a minimum ambient temperature in operation of -15 °C.
We recommend that the bearings are replaced after approx. 20 000 operating hours,
however, at the latest after 5 years.
The cylindrical shaft ends according to DIN 748 (IEC 60072) can either be ordered with
or without key. The force-locked shaft-hub coupling is preferred for fast acceleration and
reversing operation of the drives.
It is not possible to mechanically move the axis at the non-drive end of the motor.
If the drive is to be manually rotated, then this should be done at a mechanically accessible
position (e.g. ball screw spindle).
Smooth running, concentricity and axial eccentricity
The motors are tested in compliance with DIN 42955 (IEC 60072-1).
Vibration severity grade A (acc. to EN 60034-14, IEC 60034-14)
The specified values only refer to the motor. These values can be increased at the motor
due to the overall vibration characteristics of the complete system after the drive has been
The vibration complies with the severity grade up to rated speed.
Balancing (acc. to DIN ISO 8821) for motors with key
Motors with key in the shaft are half-key balanced. A mass equalization for the protruding
half key must be taken into account for the drive-out elements.
Synchronous Motors 1FK7
Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1