SEPAC designed the Permanent Magnet Brake (PMB) to provide OEMs with more than twice the torque-to-size ratio as conventional power off spring engaged brakes. (For example, a conventional 2” diameter spring engaged brake typically yields approx.18 lb-in static torque; SEPAC’s 2” diameter PMB yields 40 lb-in.) Another design advantage is that the PMB series hub is rigidly connected to the shaft for zero radial movement between the shaft and brake surface, allowing them to run at high speeds without any noise. Response times are faster too – PMB brakes run 4-90 ms compared to conventional spring engaged brakes at 30-250 ms. All of these advantages are delivered at a cost that is 10-20 percent lower than most competitive products.

PMB brakes mount easily to motors and frames in any orientation – vertical, horizontal and any angle in between – and have zero drag when brake is energized. The PMB Series is suitable for a wide range of applications, including: medical apparatus, imaging equipment and surgery robots, material handling, robotics, semiconductors (wafer handling equipment), servomotors/systems, wind and petroleum actuators and security-related actuators for doors, gates and curtains.