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 8.860 in225.00 mm |
Bore Range - Min. |
N/A 5.900 in150.00 mm |
Torque Capacity |
N/A 75200 lb·ft102000 N·m |
Inner Race Max. Overrunning Speed |
N/A 150 rpm |
Drag Torque |
N/A 54.540 lb·ft74.00 N·m |
A - Backstop width |
N/A 10.120 in257.00 mm |
B - Overall length |
N/A 19.690 in500.00 mm |
C - Inside width |
N/A 7.990 in203.00 mm |
D - Center line of backstop to flange edge |
N/A 12.800 in325.00 mm |
E - Counterbore inside diameter |
N/A 10.630 in270.00 mm |
F - Overall inner race width |
N/A 10.550 in268.00 mm |
G - Counterbore depth |
N/A 1.280 in32.50 mm |
H - Overall backstop width |
N/A 11.540 in293.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 77.990 in1981.00 mm |
K - Torque arm height |
N/A 10.000 in254.00 mm |
L - Torque arm width |
N/A 4.650 in118.00 mm |
Amount of grease |
N/A 2.860 lb1.300 kg |
Weight - With Torque Arm - Min. Bore |
N/A 1075.800 lb489.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 965.800 lb439.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 849.200 lb386.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 739.200 lb336.000 kg |