BL-40 Series Brushless DC Motors

BL- 40 Series Brushless DC Motors

The BL-40 series (40 mm diameter) are electromechanically optimized for high output power, high torque density, and low cogging torque.

Their high power density ratio allows a smaller size motor to be used in many applications, saving space and weight. The compact BL motors are well-suited for applications demanding low audible noise and long life.

BL motors are also available as frameless versions for direct machine integration.

Our engineering department is available for consultation to help you tailor a brushless motor for your specific application.


  • Diameter – 30 mm with various stack lengths each covers a wide range of applications
  • Inside rotor construction for quick acceleration
  • 8 pole motor standard, 4 pole motors optional for high speed applications
  • Peak torque up to 0.5 Nm
  • Continuous torques from 0.2 to 0.1 Nm
  • High energy neodymium magnets
  • Safe, arcless operation
  • High speed capability – up to 20,000 rpm
  • High torque per dollar ratio


  • Operation at any single speed - not limited to AC frequency
  • Motor life is not limited to brush or commutator life
  • An essentially linear speed / torque curve
  • Efficient operation without losses associated with brushes and commutation or armature induction
  • Precise, variable speed control
  • Extremely quiet operation
  • Long-life operation
  • High strength NdFeB magnets maximize torque production
  • Integrated Hall sensors for commutation
  • Computer optimized design for maximum power and torque density ensures the most compact and efficient design possible.


  • Encoder and resolver feedback options for compatibility with virtually all servo drives and motion controllers
  • Custom winding options to provide higher operating ranges of speed and voltage (up to 300 VDC)

BL motors are also available as frameless versions for direct machine integration

Typical Applications

  • Medical equipment - pumps, blowers, electric scooters and wheelchairs
  • Automatic door and window openers
  • Computer-controlled embroidery machines
  • Scanners
  • Packaging equipment and printing products
  • HVAC equipment (air handling)
  • Robotic tape storage and retrieval
  • Semiconductor handling and insertion machines
  • Actuators