The centrifugal mechanism determines the speed at which the stationary electrical switch actuates. The centrifugal mechanism is composed of a conical spring disk mounted to a bracket which is press-fit onto the motor shaft. Weights are attached to the spring disk and centrifugal force causes the spring to snap. This moves the spool on the centrifugal mechanism away from the stationary switch as the motor achieves approximately 75% of its normal running speed.
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Unit of Measure
Items
C100-1

Centrifugal Mechanisms
C-150

Centrifugal Mechanisms
C-170

Centrifugal Mechanisms
C-200

Centrifugal Mechanisms
C-250

Centrifugal Mechanisms
Mechanism
Outer Diameter (A) 		N/A 1.98 in50.29 mm N/A 2.25 in57.15 mm N/A 2.42 in61.47 mm N/A 2.61 in66.29 mm N/A 2.78 in70.61 mm
Mechanism Height (G) N/A 0.51 to 0.60 in12.95 to 15.24 mm N/A 0.65 to 0.75 in16.51 to 19.05 mm N/A 0.64 to 0.74 in16.26 to 18.80 mm N/A 0.63 to 0.76 in16.00 to 19.30 mm N/A 0.66 to 0.72 in16.76 mm
Frame (NEMA) N/A 38 to 42 N/A 42 to 48 N/A 48 to 56 N/A 48 to 145 N/A 145 to 180
Shaft Diameter (B) N/A 0.25 to 0.60 in6.35 to 15.24 mm N/A 0.30 to 0.80 in7.62 to 20.32 mm N/A 0.35 to 0.80 in8.89 to 20.32 mm N/A 0.40 to 1.00 in10.16 to 25.4 mm N/A 0.60 to 1.40 in15.24 to 35.56 mm
Speed N/A 2P50; 2P60 poles/hertz4P50; 4P60 poles/hertz N/A 2P50; 2P60 poles/hertz4P50; 4P60 poles/hertz6P50; 6P60 poles/hertz8P50; 8P60 poles/hertz N/A 2P50; 2P60 poles/hertz4P50; 4P60 poles/hertz6P50; 6P60 poles/hertz8P50; 8P60 poles/hertz N/A 2P50; 2P60 poles/hertz4P50; 4P60 poles/hertz6P50; 6P60 poles/hertz8P50; 8P60 poles/hertz N/A 2P50; 2P60 poles/hertz4P50; 4P60 poles/hertz6P50; 6P60 poles/hertz8P50; 8P60 poles/hertz
Motor Bearing N/A 6202 N/A 6202 N/A 6202 to 6203 N/A 6202 to 6204 N/A 6204 to 6205
Configurations N/A SPDT SPNC SPNO
Applications N/A
  • Air Compressors
  • Bowling Machines
  • Cloth Cutters
  • Commercial Washers
  • Farm Duty
  • Floor Polishers
  • Hoists
  • Pumps
  • General Purpose
General Specifications N/A
  • NEMA frame 42 - 215
  • Bearing size 6202 - 6208
  • 50 or 60 Hertz motors
  • Two-speed motors
  • Configurations include, SPNO, SPNC, SPDT
  • Terminal board designed for specific applications
  • UL 94-VO specifications
Benefits N/A
  • Crisp snap-action of the mechanism in a tightly controlled range.
  • Eliminates creeping, chattering, and reduces arcing of contacts
  • Prevents premature failure and impaired operation with free-floating, frictionless actuator
  • Slim switch design allows for shortest motor stack
  • Superior life expectancy