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4 Types of Electric Motors You Should Know About


An electric motor is just a type of motor that runs using electricity, but there are many different configurations or types of motors that work in distinctly different ways. Here are a few of them.

Squirrel Cage Induction Motor

The squirrel cage induction motor is an AC motor that uses a cylinder with steel laminations that have aluminum or copper conductors embedded in its surface. The AC current in the stator creates a rotating magnetic field. This is one of the most common AC motors out there. The squirrel cage motor has a simple design but rugged and has a high overload capacity. It runs at a nearly constant speed and has poor starting torque.

squirrel-cage AC electric motor for repair at an electric motor repair shop in Atlanta, GA

This makes the squirrel cage induction motor perfect for low and medium power drives where speed control is not necessary. Here are some of the common uses for these motors:

  • Air compressors
  • Fans and blowers
  • Tools such as drills, grinders, planers, etc.
  • Home washing machines
  • Water pumps

Double Squirrel Cage Induction Motor

The double squirrel cage induction motor works under the same principles as the standard squirrel cage motor. Except that it has high starting torque, supports a large overload capacity and runs at a nearly constant speed. This makes it an excellent electric motor for the following:

  • Cranes
  • Industrial compressor pumps
  • Reciprocating pumps
  • Crushers
  • Boring mills
  • Textile machinery
  • Industrial metal press punches
  • Industrial lathes

Single-Phase Synchronous Electric Motor

The single-phase electric motor has a high starting torque and its speed is easy to control and can be used at many different speeds. These motors have a simple design that have one stator and one rotor, but uses only one winding that carries the AC current. For this reason, single phase motors are generally used for the following:

  • Refrigerators
  • Vacuum cleaners
  • Fans
  • Compressors

Three-Phase Synchronous Electric Motor

A synchronous motor is an AC motor that has a rotor that spins with the coils passing the magnets at the same rate as the AC which generates a magnetic field. This motor is known as a three-phase motor because it remains constant under varying loads. Three-phase synchronous motors are used for powering equipment that operates continuously at a constant speed such as:

  • Industrial air compressors
  • Paper mills such as paper rollers or printing presses
  • Industrial cement production

Tekwell Services Is Your Electric Motor Expert

Whether you need repairs on any type of AC electric motors or a DC electric motors, Tekwell’s got you covered. We provide a complete suite of repair and preventive maintenance services for all types and configurations of electric motors. For more information, give us a call (toll-free) at 1-888-984-4668 or fill out our quick solution form to contact one of our electric motor experts today.