Special stepped sleeve designs

Stepped sleeves are used to secure and join other components. They enable hubs to be mounted and dismounted simply and can also replace various types of driver plates, dogs etc. The V-belt pulley shown in (fig. 1), for example, is designed as a stepped sleeve with an integral labyrinth seal. In this case, the sleeve not only locates the bearing axially, it is also used to transmit torque.
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