WITH LEVER ARM
IN INCH DIMENSION, WITH SPRAGS

Application as

• Backstop

for installations with low speeds. The freewheels are designed for the use in inclined conveyor-belts, elevators or pumps. Taconite seals protect the freewheels from contamination with dust or dirt.

Features

Low Speed Backstops FRHD with lever arm are sealed sprag freewheels with ball bearings. They are supplied oil-lled and ready for installation. The Low Speed Backstops FRHD are arranged on through shafts or shaft ends. Nominal torques up to 900000 lb-ft. Bores up to 21 inch.

Application example

Backstop FRHD 900 on the head drum shaft of an inclined conveyor belt system. The lever arm is bolted to the freewheel. The backdriving torque is supported by the lever arm on the base plate. When the conveyor belt is without any load, the drum shaft can be turned in both directions during maintenance by removing the bolts.

Mounting

The backdriving torque is supported by the lever arm.The lever arm must not be clamped into position. It must have 0,5 inch play in the axial and in the radial direction. The tolerance oft the shaft must be ISO h6 or j6.