Moving Coil Motors

Tachometers

Elinco | Inertial Motors

Selsyn Motors

Motor Repairs

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Moving Coil Motors

Windings Inc. designs and manufactures a complete series of Moving Coil Motors, Low Inertia, and Tachometers. The Moving Coil Motor series is in the higher torque range of most frame sizes offered today. These low inertia, high torsional rigidity motors are designed for applications that demand the highest rates of acceleration and deceleration. They are also preferred in applications where no cogging and minimal torque ripple is important. This allows them to precisely follow any time/position move profile over a wide speed range. Continuous rated torque from 22 to 500 oz·in., with peaks to 1400 oz·in. are available. Seven basic models are offered in sizes from 2.7 to 5.5 inches in diameter. For application Engineering theory of the moving coil motors, see Motion Control Magazine July/August 2000.

This performance is achieved with a unique armature construction. The original design criteria was to include only the essential elements: torque producing conductors, a reinforcing composite, but no iron. The result is a high strength to mass ratio, and no preferred detent position. Rotating conductors dictate that brushes are used, but their wear is minimal because the current density is designed well within acceptable levels and the inductance is low because of the absence of iron. Many options are available to enhance the performance, customer interface, and positional feedback. Forced air cooling, which approximately doubles the continuous ratings, is designed with interior baffling to remove the heat at the source. Various mounting, shaft configurations cabling, and connectors are commonly incorporated. Installed feedback options include an integral analog tachometer (defined below), and the kit encoder of your choice.

A repair service is also offered for the tens of thousands of motors now in the field. Every motor has rotating components that eventually wear and need replacement. Depending on the application, bearings rarely last over 20,000 hours. Extreme environmental conditions, high stress coupling, and other forms of abuse are the common cause for periodic repair or refurbishment of electric motors. Windings acknowledges that "time is of the essence", and has structured it's repair department for quick turnaround. The process includes a complete evaluation and cost estimate before repair.

Contact us and we will be happy to assist in the selection of the right motor and options for your application.

Summary