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OPB-N Series Electromagnetic Mag-Particle Brakes
SKU
opbn-series
Torque Range: 0.367–18 ft-lbs | Max RPM: 1800 | Shaft: 6–20 mm | 24 VDC mag-particle brake
Sample image only. Product may differ
Ogura’s OPB-N Series Electromagnetic Magnetic Particle Brakes are designed for applications requiring smooth and precise torque control. These brakes use magnetic particles to transmit torque, allowing for controlled slip and stable braking force across the operating range. This makes them well suited for tension control and continuous slip applications.
The OPB-N series operates on 24 VDC and delivers consistent torque independent of speed within its rated range. The design enables fine control of braking force through current adjustment, allowing operators to match torque output to system requirements. With shaft-mounted configurations and compact sizing, these brakes integrate into a wide range of industrial systems.
Models and Dimensions
| Model No. | Ogura P/N | Static Torque (ft-lbs) | max RPM | Bore (inch) | Volts/Watts | Keyway | Wgt (lbs) |
|---|---|---|---|---|---|---|---|
| OPB-5N | 25231000 | 0.367 | 1800 | 6mm shaft | 24/6.4 | Double D Flat | 0.90 |
| OPB-10N | 25233000 | 0.741 | 1800 | 7mm shaft | 24/8.9 | Double D Flat | 1.50 |
| OPB-20N | 25233100 | 1.5 | 1800 | 10mm shaft | 24/9 | Double D Flat | 2.20 |
| OPB-40N | 25230800 | 3 | 1800 | 12mm shaft | 24/9 | Double D Flat | 4.00 |
| OPB-80N | 25230900 | 6 | 1800 | 15mm shaft | 24/9 | Double D Flat | 6.60 |
| OPB-120N | 25428200 | 9 | 1800 | 15mm shaft | 24/9 | Double D Flat | 10.80 |
| OPB-120F | 25430500 | 9 | 1800 | 15mm shaft | 24/9 | Double D Flat | 11.90 |
| OPB-250N | 25426300 | 18 | 1800 | 20mm shaft | 24/9 | Double D Flat | 19.00 |
| OPB-250F | 25430600 | 18 | 1800 | 20mm shaft | 24/9 | Double D Flat | 21.80 |
Key Design Features
- Magnetic particle design for smooth, controllable torque
- Torque proportional to applied current
- Stable performance across operating speeds
- Designed for continuous slip applications
- 24 VDC operation
- Compact construction for integration into machinery
- Double D flat shaft interface for secure mounting
- Suitable for precision tension control systems
Applications
- Winding and unwinding systems - Provides controlled slip to regulate material take-up and payout.
- Printing and converting equipment - Maintains consistent web tension during processing.
- Wire and cable processing - Controls tension to prevent stretching or breakage.
- Packaging machinery - Enables controlled braking during film handling operations.
- Test and measurement systems - Provides repeatable torque for load simulation and calibration.
