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- Spring Actuated, Air Return
- High 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
- Any sliding spool valve, if held for long periods of time, may stick and not spring return due to fluid residue formation and therefore should be cycled periodically to prevent this from happening
| Brake Heat Sink Capacity | 2920000 lbf ft |
| Main Category | Brakes |
| Control Accessories | 170012, 170013, 170014, 170017, 170020, 170021, 170023, 170024, 939101, 939201, 939400, 940001, 940425, 945125 |
| Open Or Enclosed Design | Open |
| Approximate Brake Facing Life In Work Energy | 3.428452e+010 lbf ft |
| Bushing Series | RSB |
| Brake Facing Edge Color Code | Purple |
| Brake Peak Thermal Input Rate | 727 hp |
| Recommended Control Kits | 940019, 940020 |
| Inside Dia. | N/A |
| Finish | Black Oxide |
| Bore Style | Unfinished Pilot Bore |
| Bushing Type | Unfinished Pilot Bore |
| Manufacturer Family | Model QFB 2500-H, Quad Faced, Spring Engaged, Plate Brake, (HICO Facing), Model QFE 2500-H Quad Faced Plate Brake |
| Bore Range [Min] | 3.5 in |
| Brake Facing Effective Area | 808 in2 |
| Product Category | Shaft Mounted Spring Engaged Brakes |
| Port or Hose Size | 0.500 NPT |
| Maximum Pressure | 80 psi |
| Brake Facing Type | High Coefficient |
| Family Name | Multiplate Brakes |
| Bore Range [Max] | 6.5 in |
| Type | Element |
| Model | QFB-2500 |
| Actuation/Return | Spring/Air |
| Photo | DFB |
| Maximum Brake Continuous Thermal Dissipation | 14.7 hp |
| Approximate Brake Facing Life | 18400 hp-hr |
| Kits | 964026, 964038 |
| Maximum Static Brake Torque | 164800 in lb |
| Weight | 848.0 LB |
| EAN or UPC | 662284169837 |
