SKF Sensor Bearing Units
In a washing machine it is important to know the rotational speed of the drum. This is to control the motor by closing the speed loop.
In a standard washing machine the speed is measured on the motor that moves the drum through a rubber belt. To obtain a more precise speed signal SKF has developed the sensor bearing unit.
The unit mounted on the drum has 2 main functions:
- support the load
- measure the speed.