Temperature:
The problem: high temperatures in the motor damage the lubricants. The lubricants lose their effectiveness => the bearing overheats
Solutions: Baumüller uses high temperature greases that allow high temperatures and thus high rotation speeds.
Bearing currents:
The problem: In motor-converter combinations, bearing currents can develop in some cases. The voltage, instead of grounding through the converter, takes the path of least resistance through the shaft of the motor and the bearings and is discharged towards the ground. This results in vibrations => the bearing overheats and wears prematurely
Solutions: use of common mode chokes and/or current-insulated bearings
Vibration, oscillation, impacts:
The problem: Vibration, oscillation or impacts that impact the motor affect different parts of the drive and can damage different parts of the motor => the service life is shortened, the process quality suffers
Here, too, solutions exist: Vibration measurements and drive simulations offer a remedy. If the stressloads are known, numerous adjusting screws are rotated, which increase the shock resistance of electro motors.