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- 1 3/8" Bore
- 2,500 rpm Max
- Enclosed
- 85.0 psi Max Operating Pressure
- 7.50 kW Max Thermal Dissipation
applications
- Web control applications, including corrugating, labeling, and printing
- Intended for mounting on shaftless unwind stands and other shaft-end applications
features
- Offers a finned rotor with an integral fan for maximum heat dissipation
- Low rotating inertia ensures proper tensioning regardless of roll size – even at core
- Long-life friction facings to limit replacement costs
- Quick-change feature on each facing shoe reduces downtime and maintenance expense
- Comes fully assembled
- Has a straight bore for fast and easy installation
| Technical Data Sheet | 21181 |
| Rotor Diameter | 12 in |
| Rotation | Bidirectional |
| Bore Range [Min] | 1.375 in |
| Bushing Series | SF |
| Actuation/Return | Air/None |
| Approximate Brake Facing Life | 656 hp-hr |
| Model | BTBA-12 |
| Bore Range [Max] | N/A |
| Bushing Type | Finished Bore |
| Controller | 912123, 912145, 964260, 964350, 964354, 964520, 964522, 964531, 964535 |
| Outside Dia. | 12.89 in |
| Port or Hose Size | 4 mm [5/32 in.] Nylon Hose |
| Family Name | BTBA |
| Main Category | Tension Control Brakes |
| Photo | BTBA |
| Overall Length | 8.68 in |
| Open Or Enclosed Design | Enclosed |
| Fan Voltage | 120 VAC @ 60 Hz |
| Dynamic Torque Per Opposing Caliper Pair @ 0#2 bar (3 psi) | 49 in lb |
| Brake Facing Type | Standard Coefficient |
| Manufacturer Family | BTBA-12 Tension Control Brake, Clockwise Rotation, 2-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Clockwise Rotation, 4-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Clockwise Rotation, 6-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Clockwise Rotation, 8-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Counter Clockwise Rotation, 2-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Counter Clockwise Rotation, 4-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Counter Clockwise Rotation, 6-pistons, (Standard Facing), BTBA-12 Tension Control Brake, Counter Clockwise Rotation, 8-pistons, (Standard Facing) |
| Maximum Dynamic Torque With All Calipers | 587.6 N-m |
| Dynamic Torque Per Opposing Caliper Pair @ 5#5 bar (80 psi) | 1300 in lb |
| Brake Facing Edge Color Code | Red |
| Operating Pressure [Max] | 85 psi |
| Maximum Brake Continuous Thermal Dissipation | 7.5 kW |
| Operating Pressure [Min] | 1 psi |
| Other Accessories | 927525 |
| Product Category | Multi-Caliper Tension Control Brakes |
| Bore Style | Finished Bore |
| Finish | Machined/Bare Aluminum |
| Weight | 68.0 LB |
| EAN or UPC | 662284260305 |
