When it is used to prevent reverse rotation, it must be checked that the speed should not be lower than the minimum allowable value of overrunning speed. In the specification table on the following page, this model is mainly used to prevent reverse rotation under the condition of off-speed, and can also be used for overrunning of overrunning speed clutch, Two-speed drive switching with low-speed wedging.

Type RSBI is a centrifugal lift off sprag type freewheel with the inner race rotating. Only the inner race is designed for freewheeling. It is a non self-supported type.

Bearings must be provided to ensure concentricity of the inner and outer races and support axial and radial loads.

Primarily designed as a backstop, this type can be also used as an overrunning clutch in crawl drives, where the overrunning speed is high but the driving speed is low and does not exceed the maximum driving speed shown in the table.

When used as a backstop, it must be checked that the overrunning speed will not go below the minimum speed given in the characteristics table.