You can find additional technical data in the separate data sheet and in the equipment list in the
complete gear unit documentation.
3.8 Backstop
Introduction
For some requirements, the gear unit can be equipped with a mechanical backstop. In
operation, the backstop only permits the specified direction of rotation. The direction of rotation
is specified at the gear unit input ‐ and ‐ output using an arrow.
The backstop is mounted to the gear unit through an intermediate flange creating an oil tight
seal; the backstop is integrated in the gear unit oil circuit.
Principle of operation
The backstop is fitted with centrifugally-operated sprags. If the gear unit rotates in the specified
direction, the inner ring rotates together with the sprag cage in the direction of rotation of the
shaft, while the outer ring remains stationary. Above a certain speed (disengagement speed)
the sprags disengage from the outer ring. In this operating state, the backstop operates without
any wear.
NOTICE
Damage to the backstop as a result of increased wear for operation below disengagement
speeds
Damage to the backstop as a result of increased wear for operation below disengagement
speeds is possible.
Regularly replace the backstop when operating the gear unit with speeds below the
disengagement speed of the backstop. Data indicating the replacement intervals is provided
in the dimension drawing and on a plate attached to the gear unit. This plate is attached to the
gear unit housing close to the backstop.
Description
3.8 Backstop
REDUREX Gear unit 5200en
34 Operating Instructions 03/2019
To Next Page
Loading...
