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 6.500 in165.00 mm |
Bore Range - Min. |
N/A 3.940 in100.00 mm |
Torque Capacity |
N/A 32500 lb·ft44100 N·m |
Inner Race Max. Overrunning Speed |
N/A 300 rpm |
Drag Torque |
N/A 25.060 lb·ft34.00 N·m |
A - Backstop width |
N/A 5.550 in141.00 mm |
B - Overall length |
N/A 14.170 in360.00 mm |
C - Inside width |
N/A 5.280 in134.00 mm |
D - Center line of backstop to flange edge |
N/A 9.550 in242.50 mm |
E - Counterbore inside diameter |
N/A 8.230 in209.00 mm |
F - Overall inner race width |
N/A 5.590 in142.00 mm |
G - Counterbore depth |
N/A 0.160 in4.00 mm |
H - Overall backstop width |
N/A 6.650 in169.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 65.980 in1676.00 mm |
K - Torque arm height |
N/A 5.980 in152.00 mm |
L - Torque arm width |
N/A 3.580 in91.00 mm |
Amount of grease |
N/A 0.350 lb0.160 kg |
Weight - With Torque Arm - Min. Bore |
N/A 382.800 lb174.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 349.800 lb159.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 259.600 lb118.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 226.600 lb103.000 kg |