Permanent Magnet Motors

A reliable source for Fractional Horsepower Motor information and leading Fractional Horsepower Motor Companies & Manufacturers.

Permanent magnets are most commonly used in applications requiring constant magnetic force, making them ideal for electric motors. Often manufactured as fractional horsepower motors, permanent magnet motors typically run on a horsepower (HP) of 1 or less, such as ½ HP or ¼ HP. Able to be utilize alternating current (AC) or direct current (DC) electrical flow, permanent magnet motors can have a frame size of 42, 48 or 56, as defined by standards put in place by the National Electrical Manufacturers Association (NEMA). Read More…

Permanent Magnet Motors A permanent magnet motor is a type of electric motor that uses permanent magnets in its rotor assemblies in order to provide motion. The difference between a permanent magnet and a non-permanent magnet is that a permanent magnet retains its magnetism indefinitely, or until finally over-powered by external forces such as vibration, corrosion and interfering magnetic fields.

Leading Manufacturers

Mankato, MN  |  612-746-7624

At Electric Motor solutions, our goal is to provide the best motors and equipment to meet the needs of your application. Products include linear actuators, electric motors, speed reducers, custom motors, vacuum cleaner motors, AC motors, and more.

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Electric Motor Solutions $$$

Stratham, NH  |  844-858-5030

As a manufacturer of both custom and standard fractional horsepower motors, ElectroCraft makes it our goal to exceed the expectations of our customers at a low cost, no matter where they are. ElectroCraft is headquartered in New Hampshire, and has facilities operating throughout the US, UK, Germany, and China. Our products can be found in applications ranging from office equipment to medical devices to aircraft. Contact us today and tell us how we can help with your own application!

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ElectroCraft, Inc. $$$

Crystal Lake, IL  |  815-459-3080

Autotrol's motors are recognized for reliability, engineering and service. Our line of products includes fractional horsepower motors, AC motors, DC motors, gear motors, permanent magnet motors, stepper motors, synchronous motors, and custom motors. We pride ourselves on our flexibility and customer service, and it is our goal to surpass your expectations. We are ISO 9001:2015 certified.

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Autotrol Corporation $$$

East Aurora, NY  |  800-336-2112

Our products serve many different industries including defense, industrial machinery, medical devices, marine, automotive, air traffic management as well as a broad variety of others! We strive to treat each and every customer as if they are number one in order to exceed customer expectations and to keep them coming back to us for all of their needs! To receive more information on what we may be able to do for you visit us on the web today to get started!

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Moog Inc. $$$

Franksville, WI  |  262-886-9069

Our fractional horsepower motors cannot be topped! At Mamco, we manufacture fractional horsepower motors for a wide variety of commercial and industrial appliances and machines. Our engineers are committed to working with our customers one on one in order to come up with the perfect product that will fit your exact specifications. To learn more about what we may be able to do for you get in touch with our customer service division today!

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Mamco Corporation $$$
placeholder image Electric Motor Solutions ElectroCraft, Inc. Autotrol Corporation Moog Inc. Mamco Corporation

Permanent magnetic motors are used in a wide range of applications, and industries that benefit from them include: automotive, for use in window wipers, powered seats, central locking systems and more; industrial, in pumps, conveyors, extruders and other processing, manufacturing and assembly equipment; HVAC, in systems and equipment such as fans and blowers; and construction, for heavy-duty materials handling equipment such as cranes and hoists.

Permanent magnet motors are typically separated into two main types based on design and electrical flow: brushless DC motors and permanent magnet synchronous motors. While both types are types of synchronous motors, meaning that the rotor rotates at the same speed as the magnetic field, a brushless DC motor is unique in that it operates based on DC, while most synchronous motors operate on AC, and that it has an electronic commutation system instead of a mechanical one.

Permanent magnet synchronous motors, on the other hand, are run on AC as is typical and induction is not required for magnetic field production. Both are designed in a similar style, with the basic components of an enclosure, rotor, axle, wound armature and permanent magnet. Also referred to as a coil, the wound armature rotates while the magnetic field remains stationary.

The rotation results from the magnet's reaction when the electrical current flows through specific points of the motor. One major difference in design between the two types of motors is that brushless DC motors have a trapezoidal-shaped back electromotive force (EMF) while permanent magnet synchronous motors have a sinusoidal-shaped back EMF. Back EMF refers to the voltage that is induced in the wound armature when the motor is rotating.

Permanent Magnet Motors Informational Video