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
- Mining (Coal, Copper, Potash) - used in inclined conveyors and bucket elevators for transporting raw materials.
- Power Generating Plants - used in inclined conveyors to transfer coal from the stockpile to the boiler rooms.
- Cement Plants - used in bucket elevators and inclined conveyors for moving limestone and clay to crushers and silos.
COMMON INDUSTRIES
MINING
POWER GENERATING PLANTS
CEMENT
PORTS
INNOVATIVE FEATURES:
NON-ROLLOVER CAM
- Provides higher torque ratings than the leading competitors due to the larger profile and greater contact area.
- Improves performance and prevents costly and potentially dangerous rollover.
SPECIAL LABYRINTH SEAL
- New seal design prevents the ingress of dust and other contaminants typically found in mining and cement plants, which extends the life of the lubricant.
- Minimizes heat generation and provides trouble-free service with minimal scheduled maintenance.
Superior Performance in the Harshest Environments
GREASE LUBRICATION
- Offers synthetic grease lubrication in a sealed backstop design.
- Breather element is eliminated.
- No need to monitor oil levels, refill the backstop or worry about moisture in the lubricant.
- Provides trouble-free performance with minimized maintenance requirements.
DROP IN DESIGN
- Tsubaki offers the narrowest backstop with an I-beam torque arm.
- Quick and easy field replacement. Drop in compatible with most competitive products.
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 
Specifications
Bore Range - Max. |
N/A
9.840 250.00 |
Bore Range - Min. |
N/A
6.880 175.00 |
Torque Capacity |
N/A
108000 147000 |
Inner Race Max. Overrunning Speed |
N/A
135 |
Drag Torque |
N/A
68.540 93.00 |
A - Backstop width |
N/A
9.720 247.00 |
B - Overall length |
N/A
23.620 600.00 |
C - Inside width |
N/A
9.020 229.00 |
D - Center line of backstop to flange edge |
N/A
15.160 385.00 |
E - Counterbore inside diameter |
N/A
11.810 300.00 |
F - Overall inner race width |
N/A
10.710 272.00 |
G - Counterbore depth |
N/A
0.850 21.50 |
H - Overall backstop width |
N/A
11.140 283.00 |
J - Distance from backstop center line to I-beam edge |
N/A
82.010 2083.00 |
K - Torque arm height |
N/A
12.010 305.00 |
L - Torque arm width |
N/A
5.000 127.00 |
Amount of grease |
N/A
3.080 1.400 |
Weight - With Torque Arm - Min. Bore |
N/A
1522.400 692.000 |
Weight - With Torque Arm - Max. Bore |
N/A
1397.000 635.000 |
Weight - Without Torque Arm - Min. Bore |
N/A
1223.200 556.000 |
Weight - Without Torque Arm - Max.. Bore |
N/A
1097.800 499.000 |
