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- Spring Actuated, Air Return
- Standard Coefficient Facing
- 727.00 hp Peak Thermal Input
- 80.0 psi Max Pressure
- 1,000 rpm Max
applications
- Heavy-duty industrial applications requiring high torque and low inertia
features
- Hub provided loose for machining
- Spring engaged
- Quad interface
- Shaft mounted
- Straight bore
- Brake with up to 164,800 in lb of torque
- Air is supplied directly at cylinder air inlets
- Air released
- Available in disc sizes from 11.500" to 25.000"
- Available with either standard or high coefficient friction facings
- Bore sizes range up to 6.000"
- Four interface surfaces
- O-ring sealed piston and cylinder design reduces maintenance costs
- Rugged design ensures long product life
- Speeds up to 2,200 rpm
- Spring-engaged
- Static torque ratings up to 164,800 in lb
- Thermal horsepower values up to 14.7
- Through-shaft or shaft-end mounted
caution
- In certain circumstances, tooth clutches can be engaged at differential speeds
- Not intended for use in most cyclic applications or high speed engagement
- Tooth clutches are normally engaged when stationary
| Type | Element |
| Bore Range [Min] | 3.5 in |
| Bushing Type | Unfinished Pilot Bore |
| Approximate Brake Facing Life In Work Energy | 6.532102e+010 lbf ft |
| Manufacturer Family | Model QFB 2500-S, Quad Faced, Spring Engaged, Plate Brake, Model QFE 2500-S Quad Faced Plate Brake |
| Maximum Static Brake Torque | 115400 in lb |
| Product Category | Shaft Mounted Spring Engaged Brakes |
| Bushing Series | RSB |
| Photo | DFB |
| Finish | Black Oxide |
| Open Or Enclosed Design | Open |
| Brake Heat Sink Capacity | 2920000 lbf ft |
| Brake Facing Effective Area | 808 in2 |
| Maximum Pressure | 80 psi |
| Port or Hose Size | 0.500 NPT |
| Control Accessories | 170012, 170013, 170014, 170017, 170020, 170021, 170023, 170024, 939101, 939201, 939400, 940001, 940425, 945125 |
| Family Name | Multiplate Brakes |
| Brake Facing Edge Color Code | Red |
| Approximate Brake Facing Life | 34075 hp-hr |
| Inside Dia. | N/A |
| Kits | 964026, 964037 |
| Model | QFB-2500 |
| Brake Facing Type | Standard Coefficient |
| Bore Range [Max] | 6.5 in |
| Maximum Brake Continuous Thermal Dissipation | 14.7 hp |
| Recommended Control Kits | 940019, 940020 |
| Actuation/Return | Spring/Air |
| Main Category | Brakes |
| Bore Style | Unfinished Pilot Bore |
| Brake Peak Thermal Input Rate | 727 hp |
| Weight | 848.0 LB |
| EAN or UPC | 662284169820 |
