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 5.510 in140.00 mm |
Bore Range - Min. |
N/A 3.540 in90.00 mm |
Torque Capacity |
N/A 18000 lb·ft24400 N·m |
Inner Race Max. Overrunning Speed |
N/A 300 rpm |
Drag Torque |
N/A 14.740 lb·ft20.00 N·m |
A - Backstop width |
N/A 5.000 in127.00 mm |
B - Overall length |
N/A 12.600 in320.00 mm |
C - Inside width |
N/A 5.280 in134.00 mm |
D - Center line of backstop to flange edge |
N/A 8.170 in207.50 mm |
E - Counterbore inside diameter |
N/A 6.690 in170.00 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 5.940 in151.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 55.980 in1422.00 mm |
K - Torque arm height |
N/A 5.000 in127.00 mm |
L - Torque arm width |
N/A 2.990 in76.00 mm |
Amount of grease |
N/A 0.330 lb0.150 kg |
Weight - With Torque Arm - Min. Bore |
N/A 250.800 lb114.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 228.800 lb104.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 184.800 lb84.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 162.800 lb74.000 kg |