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 11.810 in300.00 mm |
Bore Range - Min. |
N/A 9.050 in230.00 mm |
Torque Capacity |
N/A 254000 lb·ft345000 N·m |
Inner Race Max. Overrunning Speed |
N/A 115 rpm |
Drag Torque |
N/A 79.600 lb·ft108.00 N·m |
A - Backstop width |
N/A 10.940 in278.00 mm |
B - Overall length |
N/A 30.710 in780.00 mm |
C - Inside width |
N/A 10.750 in273.00 mm |
D - Center line of backstop to flange edge |
N/A 19.290 in490.00 mm |
E - Counterbore inside diameter |
N/A 16.930 in430.00 mm |
F - Overall inner race width |
N/A 11.260 in286.00 mm |
G - Counterbore depth |
N/A 0.260 in6.50 mm |
H - Overall backstop width |
N/A 12.600 in320.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 94.020 in2388.00 mm |
K - Torque arm height |
N/A 15.000 in381.00 mm |
L - Torque arm width |
N/A 5.630 in143.00 mm |
Amount of grease |
N/A 3.960 lb1.800 kg |
Weight - With Torque Arm - Min. Bore |
N/A 2860.000 lb1300.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 2706.000 lb1230.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 2310.000 lb1050.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 2140.600 lb973.000 kg |