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BR-HT is mainly used in backstop applications as an integral part of a gear reducer. Prevention of reverse rotation for inclined conveyor and bucket elevator are typical application BR-HT assures not only the immediate backstop function under high torque, but also long service life by the “lift-off” design. In addition, installation on the high speed shaft with low torque enables selection of more compact models with resulting lower cost.
Unit of Measure


Torque Capacity

N/A 313.5 lb·ft425.0 N·m

Min. Inner Race Overrunning Speed

N/A 740 rpm

Max. Inner Race Overrunning Speed

N/A 3600 rpm

Max. Engagement

N/A 400 rpm

Bore Size

N/A 1.378 in35.00 mm

A (Inner Race Width)

N/A 0.984 in25.00 mm

B (Outer Race Width)

N/A 0.984 in25.00 mm

C (Outer Race O.D.)

N/A 4.724 in120.00 mm

D (Outer Race I.D.)

N/A 3.346 in85.00 mm

E (Inner Race O.D.)

N/A 2.362 in60.00 mm

G (Bolt Circle Diameter)

N/A 4.134 in105.00 mm

Q-R (Mounting Holes Quantity - Size)

N/A 8-M8

S-T (Removed Holes Quantity - Size)

N/A 2-M8

F (Cam Width)

N/A 0.748 in19.00 mm


N/A 3.960 lb1.800 kg

H (Housing Bore Min.)

N/A 2.913 in74.00 mm

M (Counter Bore Depth Max.)

N/A 0.118 in3.00 mm

N (Chamfer)

N/A 0.039 in1.00 mm
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