Centrifugal Mechanisms

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.

: Syncrosnap®
Centrifugal Mechanism
Application Chart

Centrifugal Mechanism Series

Torq Series Number: C100; C150; C170; C200; C250; C300

Mechanism Outer Diameter (A): 2.00; 2.25; 2.42; 2.61; 2.78; 3.56

Mechanism Height (G): 0.51 to 0.60; 0.65 to 0.75; 0.64 to 0.74; 0.63 to 0.76; 0.66 to 0.72; 0.77 to 0.96

Frame (NEMA): 38 to 42; 42 to 48; 48 to 56; 48 to 145; 145 to 180; 180 to 215

Shaft Diameter (B): 0.25 to 0.60; 0.30 to 0.80; 0.35 to 0.80; 0.40 to 1.00; 0.60 to 1.40; 0.80 to 1.70

Speed in Poles/Hertz: 2P50; 2P60
4P50; 4P60; 2P50; 2P60
4P50; 4P60
6P50;6P60
8P50; 8P60

Motor Bearing: 6202; 6202; 6202 to 6203; 6202 to 6204; 6204 to 6205; 6205 to 6208

Note: All dimensions are in inches.

Centrifugal Switch Product Families