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, brushless controller/drives and more. Our extensive network of 1st class manufacturing partners allows us to offer time and money saving solutions.

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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. $$$

Hauppauge, NY  |  800-893-3649

To meet the needs of this demanding market, ARC Systems, Inc. developed a unique team philosophy: to be a fully integrated, completely self-sufficient facility. From concept through engineering and production, ARC is committed to producing the highest quality fractional horsepower motors at competitive prices, delivered on time. Visit our website today to learn more!

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ARC Systems, Inc. $$$

Duluth, GA  |  800-275-4934

Our fractional horsepower motors cannot be topped! 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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WEG Electric Corp. $$$

Titusville, FL  |  321-268-5500

Rex Engineering manufactures gear motors, AC motors and DC motors. We also specialize in sub-fractional HP motors and design all products to your custom specifications. We are focused on providing excellent customer service, quality workmanship, competitive pricing, and constant design improvements for more reliable and versatile products. Contact us today for more information.

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Rex Engineering Corp. $$$
placeholder image Electric Motor Solutions ElectroCraft, Inc. ARC Systems, Inc. WEG Electric Corp. Rex Engineering Corp.

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