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 18.310 in465.00 mm |
Bore Range - Min. |
N/A 13.780 in350.00 mm |
Torque Capacity |
N/A 722000 lb·ft980000 N·m |
Inner Race Max. Overrunning Speed |
N/A 80 rpm |
Drag Torque |
N/A 180.560 lb·ft245.00 N·m |
A - Backstop width |
N/A 16.140 in410.00 mm |
B - Overall length |
N/A 42.910 in1090.00 mm |
C - Inside width |
N/A 16.420 in417.00 mm |
D - Center line of backstop to flange edge |
N/A 27.170 in690.00 mm |
E - Counterbore inside diameter |
N/A 23.620 in600.00 mm |
F - Overall inner race width |
N/A 17.010 in432.00 mm |
G - Counterbore depth |
N/A 0.300 in7.50 mm |
H - Overall backstop width |
N/A 18.660 in474.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 120.000 in3048.00 mm |
K - Torque arm height |
N/A 24.020 in610.00 mm |
L - Torque arm width |
N/A 7.240 in184.00 mm |
Amount of grease |
N/A 9.680 lb4.400 kg |
Weight - With Torque Arm - Min. Bore |
N/A 8294.000 lb3770.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 7722.000 lb3510.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 6952.000 lb3160.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 6380.000 lb2900.000 kg |