Machine Design

Hollow-Pancake Stepper Motor

A hollow-pancake stepper motor provides accurate positioning and high torque.

A 2.5-in. center hole accommodates a microwave tube. The motor has a 1.8° step angle and a 5.7 1 1/4-in. OD, and provides up to 400 oz-in. of torque. Ball bearings are included in standard configuration. For bipolar or unipolar configurations, coils are available in a wide range of voltages.

Haydon Switch & Instrument Inc., 1500 Meriden Rd., Waterbury, CT 06705, (800) 243-2715, hsi-inc.com

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