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What's New!

Natural Frequency Electric Motor Equation and Calculator

The undamped natural frequency of oscillation of a electric motor in a synchronous machine connected to an infinite system is:

Motor Shaft Load Due to Belt Loading Equations and Calculator

Electric Motor Shaft Load Due to V-belt drive Equations and Calculator

Rated Shaft Loading of DC Motors

Minimum design limits for overhung loads for dc motors, designation A, B, C, D and E having shaft extensions designated by the frame subscript AT.

Classification Electric Motors according to application, technology and NEMA

NEMA Classification of electric motors according to application and technology

NEMA 250 Frame Size Speed Capability Squirrel Cage Induction Motors.

NEMA Continuous speed capability for general purpose design A and B Direct coupled (TS shaft for motors above the 250 Frame size) squirrel cage induction motors.

Squirrel Cage Induction Motors NEMA Continuous Speed Capability

AC Electric Motor NEMA Continuous Speed Capability General Purpose Squirrel Cage Induction Motors in Direct Coupled applications.

Permanent Split Capacitor Shaded Pole Motors NEMA Horsepower and Speed Ratings

Typical NEMA horsepower and speed ratings for permanent Split Capacitor and Shaded Pole Motors rated at 115, 200, and 230 volts.

NEMA Flange-Mounting Type D Footless Motors

The following are dimensional size charts for standard electric motor NEMA standard Type D Flange Footless Motors. Standardized motor dimensions are established by the National Electrical Manufacturers Association (NEMA) - are tabulated below and apply to all base-mounted motors listed herein that carry a NEMA frame designation

Polyphase Medium Induction Motors NEMA Horsepower and Speed Ratings

Horsepower and Speed Ratings, Polyphase Medium Induction Motors Table Chart

Small Induction Motors Horsepower and Speed Ratings NEMA

Typical NEMA horsepower and speed ratings for small induction motors rated at 115, 200, and 230 volts single phase and 115, 200, and 230 volts polyphase induction motors