Product Type: Rotary

BTA High Speed Rotary

The BTA or Brushless Torque Actuator platform offers high-speed controllability in rotary stroke applications, with a single-phase coil, stator bases, and a matching rotor pole, this design allows for a stroke of up to 45 degrees.

Since our design does not require full stroke actuation, this product provides a much quieter operation due to the soft, shock-free cycling, eliminating the noise associated with end-of-stroke mechanical stops. With proper controls and application damping, it is possible to achieve exceptionally low dB levels.

The BTA product family is ideal for applications that require millisecond actuation speeds and high throughput such as material handling and sortation.

Features and Benefits

  • High Durability up to 100 million actuations
  • Fast Actuation Speeds with 10 millisecond actuation times unloaded
  • Near Noiseless Actuation
  • Optimized for torque and speed performance

Common BTA Applications

  • Material Handling
  • Sortation
  • High-Speed Shutter Control
  • Valve control
  • Fail-Safe Control


Developed for applications requiring high speed and higher torque motion control, the Ultimag platform is substantially faster than other solenoids.

Johnson Electric’s Ultimag® rotary actuator technology offers a bidirectional, center return function not found in traditional rotary solenoids. The Ultimag platform is substantially faster than other solenoids, and can be operated in an on/off mode or proportionally, in both open and closed loop systems.  Ultimag actuators offer a 45° stroke; however, the design is capable of a maximum stroke of 160°. For shorter strokes, electronic or mechanical stops can be used. This technology is ideal for applications requiring high speed and high torque motion control often found in industrial, business technology and medical applications.


  • Sewing Machine Needle Driver
  • Speaker Movement
  • High Speed Laser Lens Movement
  • High Speed Diverters (mail processing)

Johnson Electric – Saia Burgess

Johnson Electric is a global leader in motion products, control systems and flexible interconnects. We serve a broad range of industries including automotive, building automation and security, business machines, defense and aerospace, food and beverage, home technologies, HVAC, industrial equipment, medical devices, personal care, power equipment and power tools.

Brand names:    Saia-Burgess  –  Ledex  –  Dormeyer

Rotary DC Solenoids

Rotary solenoids are what we do best. This technology is built specifically for high-speed actuation devices and offers reliable operations.

Johnson Electric is the world leader in Rotary Solenoid technology.  Rotary solenoids are electromechanical devices that convert linear motion to rotary motion by virtue of three ball bearings that travel down inclined raceways. When the coil is energized, the armature assembly is pulled towards the stator and rotated through an arc determined by the coining of the raceways. These extremely high speed actuation devices provide very long life operation for the most challenging applications. With operating life up to fifty million cycles, a wide variety of sizes and custom engineering for life, speed, environmental conditions and torque requirements, the Rotary DC solenoid is ideal for a variety of markets and applications including door locks, vending machines, industrial automation, and medical diagnostic equipment.


  • Food sorter diverter
  • Strapping machine
  • Sorting gates on semiconductor testing machine
  • bulb changers on navigational buoys