Parker's new water cooled motors improve performance of machine tools
15/04/2011 Parker Hannifin Ltd
Parker Hannifin, the global leader in motion control technologies, has introduced an innovative new range of brushless synchronous electro-spindle motors, for use in machining centres, and in milling, turning and grinding applications. Called the HKW series, the new motors feature a water cooled, frameless design, and have been developed for high speed machining at up to 50,000rpm, are rated to 230kW, and can provide both high torque at slow speeds and high maximum speeds at constant power.Delivered as separate components, the new HKW range of synchronous electro-spindle motors can easily be integrated into the mechanical structure of existing or new machines, offering a flexible technology platform with the performance and functionality required to meet the demands of high speed machining applications.
In terms of construction, the HKW motors consist of a stator, with or without housing, a rotor, with or without a hub, an optional large diameter resolver and a compatible drive unit. The use of innovative cold permanent magnet technology means that the bearings are subject to less heating than conventional induction motors and there is no dilation effect, ensuring a long and reliable service life. Additionally, HKW motors are smaller and more compact, with greater power density, than competing induction motors.
When used as spindle drives, the new HKW motors offer a number of advantages over conventional asynchronous motors. For example, they have extremely low levels of vibration, giving the potential for higher quality surface finishing, while reduced axial shaft expansion delivers greater accuracy and increased bearing life. The HKW series also allows faster spindle acceleration and deceleration, producing shorter machine cycles, and can be operated in constant torque mode up to base speed, and at constant power in field-weakening mode, at up to twenty times base speed, eliminating the need to oversize motors for each application.
The latest HKW motors are compatible with Parker's advanced range of drives and with many common third party units. The company also provides global customer support, training and service facilities.
For further information, please contact:
Parker Hannifin Ltd, Sales Company UK, Tachbrook Park Drive, Warwick CV34 6TU Tel: 00800 27 27 5374 email: parker.uk@parker.com
For more information, visit the company's web site at http://www.parker.com
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