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  • Three Phase
  • Constant Torque
  • 208-230V
  • 1725/850 RPM
  • One Winding
  • Rigid Base
  • TEFC
Two-speed, single winding design motors.These totally enclosed fan cooled designs are priced competitive to other manufacturers’ drip-proof two-speed, single winding motors.

Variable torque motors have horsepower ratings that vary as the square of the speed, while torque varies directly with the speed. These motors are typically used on applications such as fans, blowers and centrifugal pumps.

Constant torque motors are capable of developing the same torque for all speeds. Their horsepower ratings vary directly with the speed. Constant torque motors are used on mixers, compressors, conveyors, printing presses, extractors, feeders and laundry machinery.

Constant horsepower motors develop the same horsepower at all operating speeds, and the torque varies inversely with the speed. These motors are often used on machine tools, such as drills, lathes, punch presses and milling machines.
Two-Speed Motors
Unit of Measure
Items Two-Speed Motors
120942
Leeson Constant Torque 208-230 V Two-Speed Motors
Two-Speed Motors
131473
Leeson Constant Torque 208-230 V Two-Speed Motors
Two-Speed Motors
131472
Leeson Constant Torque 208-230 V Two-Speed Motors
Two-Speed Motors
140446
Leeson Constant Torque 208-230 V Two-Speed Motors
Base N/A Rigid Base
Enclosure Type N/A Totally Enclosed Fan Cooled
Phase N/A Three
HP N/A 1/2 1 N/A 1 2 N/A 1 1/2 3 N/A 2.5 5
RPM 60 Hz N/A 850 1725 N/A 860 1740 N/A 850 1725 N/A 850 1725
Voltage N/A 208 V230 V
FL Amps1 N/A 3.2 to 4.2 N/A 5.7 to 5.8 N/A 6.9 to 7.6 N/A 13.4 to 14.0
NEMA Frame N/A 143T N/A 184T N/A 184T N/A 215T
Disc. Sym. N/A B
C Dimension N/A 12.75 in N/A 13.96 in N/A 14.96 in N/A 17.71 in
Approx. Weight N/A 37 lbs N/A 69 lbs N/A 80 lbs N/A 137 lbs
NEMA Service Factor N/A 1.00
Manufacturer N/A
Leeson
  • 1 F.L. Amps listed are for high and low speeds, respectively.