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 10.630 in270.00 mm |
Bore Range - Min. |
N/A 7.870 in200.00 mm |
Torque Capacity |
N/A 141000 lb·ft192000 N·m |
Inner Race Max. Overrunning Speed |
N/A 125 rpm |
Drag Torque |
N/A 72.220 lb·ft98.00 N·m |
A - Backstop width |
N/A 10.510 in267.00 mm |
B - Overall length |
N/A 25.590 in650.00 mm |
C - Inside width |
N/A 10.000 in254.00 mm |
D - Center line of backstop to flange edge |
N/A 16.340 in415.00 mm |
E - Counterbore inside diameter |
N/A 13.540 in344.00 mm |
F - Overall inner race width |
N/A 11.020 in280.00 mm |
G - Counterbore depth |
N/A 0.510 in13.00 mm |
H - Overall backstop width |
N/A 11.930 in303.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 87.990 in2235.00 mm |
K - Torque arm height |
N/A 12.010 in305.00 mm |
L - Torque arm width |
N/A 5.510 in140.00 mm |
Amount of grease |
N/A 3.520 lb1.600 kg |
Weight - With Torque Arm - Min. Bore |
N/A 1955.800 lb889.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 1821.600 lb828.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 1522.400 lb692.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 1388.200 lb631.000 kg |