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Field Coil Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial field coil manufacturers and suppliers. Access our comprehensive index to review and source field coil manufacturers with preview ads and detailed product descriptions. These field coil companies can design, engineer and manufacture field coils to your specifications and application needs. A quick and easy to use request for quote form is provided for you to contact these field coil manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether it’s for a manufacturer of induction coils, solenoid coils, or custom coils.

  • Sag Harbor, NY 800-724-5952

    Here at Sag Harbor, we understand the importance for perfect fit, precision winding and reliable performance when it comes to the field coils you use. We have over 65 years of experience designing and improving upon standard field coil designs, and use it to provide quality, long lasting coils, backed by our ISO 9001:2008 quality certification.

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  • Antigo, WI 800-826-9741

    Johnson Electric Coil Company is a family owned manufacturer that specializes in custom transformers, coils and inductors. From three phase isolation transformers to single phase inductors and chokes, we carefully design our products to meet your exact specifications. Our experienced engineers are available to assist during every step of the process. Let Johnson make great parts for you!

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  • Scarborough, ON 416-298-8108

    Trench Limited, a branch of the Trench Group, has been a supplier of air core reactors for the electric power industry since first opening in 1962. Located in the Toronto area, we have evolved into a world leader in the electric coil industry, demonstrating flexibility with every project and complying to the strictest standards of quality. Our portfolio can be viewed in full on our website. Contact Trench today for further inquiries!

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  • San Diego, CA 619-661-7510

    We offer outstanding electric coils which are ideal for a multitude of industries. Our teams provide a wide range of services including: mechanical engineering, wiring harness design, reverse engineering, drafting services, electrical engineering and much more. We manufacture top of the line electric coils and our teams committed to only supplying you the very best. Please give us a call today to learn more information!

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  • South Haven, MI 269-637-5201

    South Haven Coil has been manufacturing superior quality electromagnetic products since 1957,all made 100% in the USA. We are one of the nation's leading quality electromagnet manufacturer's.Specializing in electromagnets, wire harnesses & termination, molded coil assemblies,potted coils, bobbin-wound coils, toroids,laminated & ferrite transformers.We strive to deliver dock-to-stock components, on time and within budget.

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  • More Field Coils Companies

businessIndustry Information

Field Coils

A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or a generator. It consists of a coil wire through which a current flows.

In a rotating machine, the field coils are wrapped around an iron magnetic core that guides the magnetic field lines. The magnetic coil has two parts, a stator and a rotor. The stator is stationary and the rotor rotates within it. The magnetic field lines pass in a continuous loop, called a magnetic circuit, from the stator to the rotor and back to the stator again. Field coils, which energize, may be attached to the stator or the rotor. A rotating machine’s magnetic path is characterized by poles, or locations at equal angles around the rotor at which the magnetic field lines pass from stator to rotor or vise versa. The stator and rotor are classified by the number of poles they have. Most configurations use just one coil per pole, but some older or simpler arrangements use a single fuel coil with a pole at each end. The wire used to wind a field coil must have a low resistance in order to reduce the amount of power it consumes and to reduce the production of waste heat by ohmic heating. This is important because excess heat in the wires is a common cause of failure. Typically, coils are wound with enamelled copper wire, which is sometimes referred to as magnet wire. However, due to increasing cost of copper, field coils are frequently being wound with aluminum.

Some time ago, before the general availability of lightweight permanent magnets, field coils were routinely used in loudspeakers. Today, field coils provide catalyst services for many usages, such as dynamos, alternators, generators, electric motors, starter motors, magnet coils and electric brakes. Non-rotating machines that use field coils include simple electromagnets as well as complex lab instruments such as mass spectrometers and NMR machines. To meet the complex needs of the market, field coils are available in many different types, including encapsulated, glass taped, tape wrapped, injection molded, transfer molded and loose wound, bobbin wound or self-supported.

Durable Field Coils Varnished Coil
Durable Field Coils - Sag Harbor Industries, Inc. Varnished Coil - Sag Harbor Industries, Inc.