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 16.730 in425.00 mm |
Bore Range - Min. |
N/A 12.790 in325.00 mm |
Torque Capacity |
N/A 542000 lb·ft735000 N·m |
Inner Race Max. Overrunning Speed |
N/A 85 rpm |
Drag Torque |
N/A 159.190 lb·ft216.00 N·m |
A - Backstop width |
N/A 14.960 in380.00 mm |
B - Overall length |
N/A 40.550 in1030.00 mm |
C - Inside width |
N/A 15.590 in396.00 mm |
D - Center line of backstop to flange edge |
N/A 25.390 in645.00 mm |
E - Counterbore inside diameter |
N/A 23.620 in600.00 mm |
F - Overall inner race width |
N/A 15.910 in404.00 mm |
G - Counterbore depth |
N/A 0.160 in4.00 mm |
H - Overall backstop width |
N/A 17.050 in433.00 mm |
J - Distance from backstop center line to I-beam edge |
N/A 107.990 in2743.00 mm |
K - Torque arm height |
N/A 20.000 in508.00 mm |
L - Torque arm width |
N/A 6.380 in162.00 mm |
Amount of grease |
N/A 7.700 lb3.500 kg |
Weight - With Torque Arm - Min. Bore |
N/A 6776.000 lb3080.000 kg |
Weight - With Torque Arm - Max. Bore |
N/A 6358.000 lb2890.000 kg |
Weight - Without Torque Arm - Min. Bore |
N/A 5742.000 lb2610.000 kg |
Weight - Without Torque Arm - Max.. Bore |
N/A 5324.000 lb2420.000 kg |