Motors Designed for Handheld Instruments Offer High Speed

Originally Published MPMN January 2006

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Motors Designed for Handheld Instruments Offer High Speed

Susan Shepard

A new series of high-performance motors was specifically designed for powering precision instruments such as surgical hand pieces and similar medical and dental power tools. The SLH slotless brushless dc motors from Emoteq Corp., an Allied Motion Technologies Co. (Tulsa, OK), offer high-speed operation to 75,000 rpm.

The 12.7-mm diam (0.5-in.) motors feature a low-loss lamination material, a precision-balanced neodymium magnet rotor assembly, a 200°C wire insulation system, and high-quality bearings. This results in a good power-to-weight ratio, long service life, high reliability, zero cogging, high efficiency, low audible noise, and better low-speed operation than competitive units, according to the company.

An autoclavable version of the SLH motors is available with potted windings and conformally coated PCB assemblies. Other available options are custom windings and custom shaft configurations, including dual shafts, gearboxes, and shaft seals.

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