Suma Precision Machinery

Features

Complete Freewheels FRHD with lever arm are sealed sprag freewheels with ball bearings. They are supplied oil-filled and ready for installation. The freewheels are arranged on through shafts or shaft ends.

The freewheels FRHD are used as:

➧Backstops

for low-speed applications. They are designed for use in inclined conveyor-belt systems, elevators and pumps. Taconite seals protect the backstops when conditions are dirty and dusty.

Nominal torques up to 900 000 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.

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.

Keyway dimensions upon request by customers. • Conversion factors: 1 lb-ft= 1,35 Nm, 1 inch = 25,4 mm, 1 lbs = 0,453 kg.