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Specification — 50W

50W Brushless DC Motor For Fans, Pumps And Precision Actuators.

50W is the sweet spot for small auxiliary drives that need long life without maintenance. Cooling fans, circulation pumps, valve actuators and laboratory instruments all fit within the 50W power class. A brushless DC motor at this size outlasts a brushed equivalent by 5-10x and runs quieter. Shenghe manufactures 50W BLDC motors in 42mm and 57mm frames with multiple voltage and gearing options.

  • 12V, 24V, 36V and 48V winding options
  • 42mm and 57mm stator frames
  • Planetary and worm gearbox options
  • 20,000+ hour bearing life
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Why 50W BLDC

Benefits Of A 50W Brushless Motor

  • Compact 42mm or 57mm frame fits inside equipment housings
  • No brush wear — 20,000+ hour life without maintenance
  • Low noise (under 45 dB at 1m) for lab and medical environments
  • High efficiency (85-90%) reduces heat in enclosed spaces
  • Precise speed control from zero to full speed via PWM
  • Multiple voltage windings from the same frame size

50W Motor Series Available

ParameterRange
Rated voltageDC 12V / 24V / 36V / 48V
Rated power50W
No-load speed2000 – 4000 RPM
Rated torque (motor)0.12 – 0.25 Nm
Frame size42mm / 57mm
Gear ratio options5:1 – 200:1
Output torque (geared)Up to 10 Nm
FeedbackHall sensor, optional encoder

Common Applications For 50W BLDC Motors

  • Cooling fans: ECM blower modules for electronics cabinets, servers and telecom shelters
  • Circulation pumps: Small centrifugal and diaphragm pumps for HVAC and beverage dispensers
  • Valve actuators: Quarter-turn and linear actuators for HVAC dampers and process valves
  • Laboratory equipment: Centrifuge drives, stirrer motors and peristaltic pump heads
  • Medical devices: Infusion pump drives, ventilator blowers and diagnostic equipment
  • Camera gimbals: Pan-tilt drives for PTZ cameras and security platforms

Technical Details For Integration

  • Stator frame: 42mm (NEMA 17 bolt pattern) or 57mm (NEMA 23)
  • Controller interface: 3-phase Hall-commutated, 5V Hall supply standard
  • Noise level: Below 45 dB(A) at 1m (unloaded, no gearbox)
  • Mounting: Flange, inline gearmotor, or panel-mount bracket
  • Shaft options: D-flat, keyed, or 6mm / 8mm round
  • Operating temperature: -20 °C to +50 °C ambient

Need A 50W Brushless Motor?

Tell us your voltage, speed, torque and size constraints. We will recommend a 50W motor from our standard range or propose a custom solution. Quote within one working day.

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