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
COMMON INDUSTRIES
MINING
POWER GENERATING PLANTS
CEMENT
PORTS
INNOVATIVE FEATURES:
NON-ROLLOVER CAM
SPECIAL LABYRINTH SEAL
Superior Performance in the Harshest Environments
GREASE LUBRICATION
DROP IN DESIGN
3 STEP
EASY CONNECTION
Step 1: Insert I-beam torque arm into clutch
Step 2: Insert lock pins through flange plate and secure torque arm
Step 3: Insert retaining pins into lock pins 
Bore Range - Max. |
N/A 7.870 in200.00 mm |
Bore Range - Min. |
N/A 3.940 in100.00 mm |
Torque Capacity |
N/A 45500 lb·ft61700 N·m |
Inner Race Max. Overrunning Speed |
N/A 180 rpm |
Drag Torque |
N/A 32.430 lb·ft44.00 N·m |
A - Backstop width |
N/A 5.910 in150.00 mm |
B - Overall length |
N/A 16.930 in430.00 mm |
C - Inside width |
N/A 5.590 in142.00 mm |
D - Center line of backstop to flange edge |
N/A 11.180 in284.00 mm |
E - Counterbore inside diameter |
N/A 9.880 in251.00 mm |
F - Overall inner race width |
N/A 5.910 in150.00 mm |
G - Counterbore depth |
N/A 0.160 in4.00 mm |
H - Overall backstop width |
N/A 7.010 in178.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 72.010 in1829.00 mm |
K - Torque arm height |
N/A 7.990 in203.00 mm |
L - Torque arm width |
N/A 4.170 in106.00 mm |
Amount of grease |
N/A 0.420 lb0.190 kg |
Weight - With Torque Arm - Min. Bore |
N/A 578.600 lb263.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 517.000 lb235.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 407.000 lb185.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 345.400 lb157.000 kg |