Portescap Turbo Disc™ stepper motors use a unique magnetisation method for unparalleled stepper performance

(PRWEB) October 7, 2004

“The rotor consists of a rare earth magnet with a proprietary magnetisation method that provides much smaller step angles than conventional two-phase permanent magnet stepper motors. The unique rotor design provides a very low moment of inertia for outstanding acceleration and dynamic behaviour. Coupled with high peak speeds, this means that any incremental movement is carried out in the shortest possible time,” says Dave Beckstoffer, Product Manager. Low inertia also results in high start/stop frequencies, which can solve certain motion challenges without applying a ramp.

The variation in holding torque is reduced because these motors are designed with a low detent torque. The motors exhibit minimal harmonic distortion, with excellent static and dynamic accuracy for any position under any load or speed conditions. An independent magnetic circuit eliminates the coupling between phases ensuring accurate angular resolution in microstep mode. The short magnetic circuit using a small amount of SiFe laminations, significantly reduces iron losses for obtaining more torque at high step rates (up to 10’000 step/s). The result is high peak torques, high speeds and high power/volume ratios.

About Danaher Motion

Danaher Motion is a leading global supplier of motion control products, systems and services that improve the efficiency of complex manufacturing operations. Our product innovations have been revolutionising the motion control industry for over 60 years through trusted brand names including Kollmorgen, Pacific Scientific, Thomson, Dover and Portescap. Danaher Motion is a strategic business platform of the Danaher Corporation (NYSE:DHR), a manufacturer of process and environmental controls, tools and industrial components. For more information visit us online at http://www.danahermotion.com

Sales and literature requests :


A company of Danaher Motion

Rue Jardinière 157

Case postale

CH-2301 La Chaux-de-Fonds


Office: +41 (0) 32 925 64 00

Fax: +41 (0) 32 925 65 90

About The Author

Ibrar Ayyub

Ibrar Ayyub is an experienced technical writer with a Master's degree in computer science from BZU Multan University. He has written for various industries, mainly home automation, and engineering. He has a clear and simple writing style and is skilled in using infographics and diagrams. He is a great researcher and is able to present information in a well-organized and logical manner.

Follow Us:
Scroll to Top