When using motor encoder units in the locating bearing position, the impulse ring, sensor body and connecting cable should not be subjected to any axial load, whenever possible. When the bearing is subjected to axial loads that act in both directions, the motor encoder unit should be mounted in such a way that the heavier axial load is transmitted to the bearing outer ring side face opposite the sensor (fig. 3).
Motor encoder units can be located axially in the housing in different ways:
- with a snap ring in the outer ring and a cover bolted to the housing (fig. 4)
- with a spacer sleeve and a snap ring in the housing (fig. 5)
- with a cover engaging the outer ring (fig. 6)
Motor encoder units with d ≤ 25 mm can only be located axially via a snap ring in the outer ring.