Please be aware we use cookies to make your experience better. A cookie is a piece of data stored on a visitor's hard drive to help us improve your access and identify repeat visitors. Cookies can also enable us to track and target the interests of our users to enhance the experience on our site. Usage of a cookie is in no way linked to any personally identifiable non-public information. Learn more.
OPL Series Permanent-Magnet Brakes
SKU
opl-series
Torque Range: 0.022–0.292 ft-lbs | Max RPM: 200–400 | Shaft: 8 mm | Permanent-magnet brake
Sample image only. Product may differ
Ogura’s OPL Series Permanent-Magnet Brakes are designed for ultra-compact applications requiring low torque holding without continuous power input. These brakes rely on permanent magnets to generate holding force, eliminating the need for electrical power to maintain braking. This makes them suitable for energy-sensitive systems and applications requiring passive holding.
The OPL series is optimized for very low torque applications and compact assemblies. The design supports direct shaft mounting and is available in multiple configurations to accommodate different integration requirements. With stable holding performance and simple construction, the series is suited for small-scale mechanical and positioning systems.
Models and Dimensions
| Model No. | Ogura P/N | Static Torque (ft-lbs) | max RPM | Bore (inch) | Volts/Watts | Keyway | Wgt (lbs) |
|---|---|---|---|---|---|---|---|
| OPL-0.3R | 25273800 | 0.022 | 300 | 8mm | N/A | N/A | 0.05 |
| OPL-0.6R | 25273700 | 0.044 | 300 | 8mm | N/A | N/A | 0.05 |
| OPL-1BR | 25274900 | 0.074 | 400 | 8mm | N/A | N/A | 0.26 |
| OPL-1.2R | 25272500 | 0.092 | 250 | 8mm | N/A | N/A | 0.06 |
| OPL-1.5BR | 25275000 | 0.108 | 400 | 8mm | N/A | N/A | 0.26 |
| OPL-2BR | 25275100 | 0.150 | 300 | 8mm | N/A | N/A | 0.33 |
| OPL-3BN | 25257200 | 0.224 | 300 | 8mm shaft | N/A | N/A | 0.42 |
| OPL-3BR | 25275200 | 0.224 | 300 | 8mm | N/A | N/A | 0.33 |
Key Design Features
- Permanent-magnet brake requiring no holding power
- Fail-safe holding when unpowered
- Compact, low-profile design
- Torque range from 0.022 to 0.292 ft-lbs
- Designed for low-speed applications
- 8 mm shaft compatibility
- Multiple configuration variants (N, R, BN, BR)
- Simple mechanical integration
Applications
- Precision positioning systems - Maintains position in low-load applications without power.
- Small automation equipment - Provides holding force in compact mechanical systems.
- Laboratory devices - Supports stable positioning in sensitive equipment.
- Optical systems - Maintains alignment without introducing electrical noise.
- Light-duty mechanisms - Provides passive holding in low torque environments.
