George Ellis, senior scientist at Kollmorgen.

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Motors and Drives March 1, 2000

Direct-drive rotary motors streamline machine design

When electric motors are used in low-speed rotary applications, a transmission is often installed to gear down motor speed for higher output torque. This reduces cost because gearing allows small high-speed motors to produce high torque at low-speeds. However, in high-accuracy applications, such as film-coating lines and integrated circuit test machines, designers avoid gearing because it...

By George Ellis, senior scientist at Kollmorgen.
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