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29/03/2011
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German manufacturer STÖBER has launched a new flange hollow shaft drive which it claims offers a balance between powerful torque, high dynamic performance and precise constant speed for motor behaviour.
 The PipeDrive, which is being launched at the 2011 Hanover Industrial Exposition next week, features a hollow shaft with a large internal diameter of 28 or 38mm to allow for reliable feeding of supply lines. These include power cables, hydraulic pipes and pneumatic hoses, as well as shafts and laser beams.
According to the company, a short hollow shaft planetary gear unit was developed especially for these large passage widths and is compatible with the new compact servo hollow shaft motor. To protect these components and media that will be fed through, the flange hollow shaft is completely clad with one continuous pipe.
The design of the motor is based on a new winding technology that generates the highest possible copper fill factor. This measure is designed to increase the motor rating by approximately 80% compared to the previous standard winding technology, which has made it possible to reduce the length of the motor accordingly.
In addition, the stable output drive bearing of the gear unit is designed to provide a high level of tilting stiffness to allow for a high tilting moment. Since external fans cannot be used with hollow shaft drives, optional liquid cooling is available to increase the nominal torque.
The transmission ratios of the starting series have 1 to 3 stages and range from 3 to 27. The acceleration torque extends from 30 to 500Nm. Hollow shaft motors are available in lengths 1, 2, 3 and 5 with gradations in 25mm increments.
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Author
Laura Hopperton
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