Partial Motors

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Partial Motors

We manufacture our partial motors using the highest quality materials to ensure a long, trouble-free equipment service life.

We understand that our customers’ applications must meet the most stringent mechanical tolerances and electrical characteristics. Our WELCO Technologies partial motors provide state-of-the-art quality and are engineered to exceed these requirements.

Common applications for our partial or shell motors are:

  • Motorized spindles
  • Pumps
  • Small hoist motors
  • Drilling and boring machines
  • Routers
  • Arbors
  • Grinders or other industrial applications where motors must be integrated into another component.

Partial Motor electrical features

  • Horsepower: 100 Watts to 420 Kilowatts (0.01 hp to 550 hp) for constant duty cycles and variable duty cycles.
  • Poles: 2, 4, 6, 8 poles are standard. Higher pole counts and multi-speed are also available.
  • Speed: Up to 24,000 rpm with closed-loop sensorless FOC options, and higher speeds are also available for Volts/Hz open-loop control.
  • Design configuration: NEMA design A, B, C, D Squirrel cage induction.
  • Voltage: Up to 600 VAC with standard 220-380-480 VAC windings.
  • Frequency: Up to 1,000 hertz for Volts/hertz and up to 600 hertz with FOC drives.
  • Winding insulation: Premium class H is standard. Higher temperature insulation, varnish, or ceramic-based encapsulation are also available.

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