Torque, speed and size options for environments from water to spacesep505 seb series lo-res-72-dpi

ELMIRA, NY – SEPAC regularly modifies its product designs to fit specific OEM application requirements. Customization is a core competency at SEPAC where the engineering team frequently walks OEMs through the process of a custom solution, from rapid prototyping to calibration and controlled production. The Spring Engaged Brake (SEB) showcases the range of options the company makes available to OEMs.

The SEB series is spring engaged and electromagnetically released for use dry or in oil depending on the friction material used. Robust friction materials are available with higher torque density for both static and dynamic engagement. Multiple disc configurations are available when higher torque is needed in a smaller package. OEMs can also select custom coatings, enclosures and materials for conditions as varied as water, oil, salt spray, high pressure, low/high temperature and even a vacuum environment such as space.

The SEB series offers custom voltages, as well as fully potted coils (standard or vacuum potted), dual coils and step down power designs. Special integrated drive hubs and specialty enclosures with sensors or manual release are additional design options.

SEB Series highlights include:

  • Static torque: from a few oz-in to 5000+ lb-ft
  • Max speed: 20,000 RPM
  • Magnet body diameter: less than 1” to 20+”
  • Full motor/brake actuator assemblies available


SEPAC Inc., in Elmira, NY, is a custom engineering company and manufacturer of motion control products including electromagnetic clutches and brakes. SEPAC provides innovative solutions of the highest quality and reliability to OEMs, distributors and end users around the world. SEPAC’s brake and clutch applications range from aerospace and defense to robotics, energy, healthcare and a wide variety of industrial markets. For more information visit or call 1.800.331.3207.

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