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Tsubaki’s new BS-F Series backstops are designed for simple, drop-in installation to all major competitive external, low-speed backstop products. These backstops use a unique labyrinth seal design for maximum life with minimal maintenance. With Tsubaki’s innovative design features, our backstops ensure efficient and dependable operation in the harshest environments.

TYPICAL APPLICATIONS
  • Mining (Coal, Copper, Potash) - used in inclined conveyors and bucket elevators for transporting raw
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Unit of Measure

Specifications

Bore Range - Max.

3.350 in85.00 mm

Bore Range - Min.

2.360 in60.00 mm

Torque Capacity

4980 lb·ft6760 N·m

Inner Race Max. Overrunning Speed

300 rpm

Drag Torque

6.000 lb·ft8.00 N·m

A - Backstop width

4.210 in107.00 mm

B - Overall length

8.270 in210.00 mm

C - Inside width

4.13 in105.00 mm

D - Center line of backstop to flange edge

5.940 in151.00 mm

E - Counterbore inside diameter

4.170 in106.00 mm

F - Overall inner race width

4.720 in120.00 mm

G - Counterbore depth

0.300 in7.50 mm

H - Overall backstop width

5.000 in127.00 mm

J - Distance from backstop center line to I-beam edge

32.010 in813.00 mm

K - Torque arm height

2.990 in76.00 mm

L - Torque arm width

2.520 in64.00 mm

Amount of grease

0.140 lb0.065 kg

Weight - With Torque Arm - Min. Bore

94.600 lb43.000 kg

Weight - With Torque Arm - Max. Bore

88.000 lb40.000 kg

Weight - Without Torque Arm - Min. Bore

68.200 lb31.000 kg

Weight - Without Torque Arm - Max.. Bore

61.600 lb28.000 kg