Compact hollow shaft drives by Faulhaber

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Faulhaber has developed a compact hollow shaft motor with large opening that operates backlash-free and can be integrated into different applications with limited effort.

The direct drive employs company’s DM66200H series and offer a new drive solution for applications requiring a very large aperture. It can be used wherever cables need to be guided through the aperture or in cases where gases, fluids or light signals are to pass through the opening. Apart from the field of optics – e.g. for microscope stages, apertures, zoom lenses, laser beam controls, etc. – it can be used for impellers and prostheses, in robotics as well as for many different control and positioning tasks. Other potential applications are turntables, antennas as well as air and gas extractors.

With an overall diameter of 66 mm, the drive offer a wide aperture diameter of 40 mm. With a thickness of only 24 mm, the drive has a weight of 218 gr. The compact direct drive combines torque, speed and precision, based on the tried-and-tested stepper motor technology from Faulhaber.

The rotor runs around the opening and drives the mechanics surrounding this opening directly, without the need for a transmission. Despite the large aperture, the moving mass of the rotor remains small, making speeds of up to 2000 rpm possible. The motor reaches a dynamic torque of up to 180 mNm and can move correspondingly large loads. With a high resolution of 1.8° in full-step mode, it can execute positioning tasks precisely in open loop operation.

Due to the design, it is extremely energy-efficient and requires neither a brake nor an encoder. Thanks to minimal wear (bearing only), the solution is ideal for maintenance-free continuous operation. Special executions are available on request, such as special lubricants, customer specific windings, particular cables and connectors and mounting flanges.

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