HW Electrospindle synchronous motors 2 to 110kW

The synchronous electrospindle technology. The HW range of synchronous electrospindle motors has been developed with the aim of solving the problems met in high speed machining. Compared to conventional asynchronous motors, the HW motors have decisive advantages for quality spindle construction : machining of higher precision, longer bearing lifetime, greater acceleration capacity, higher compactness... Controlled by the DIGIVEX Drive, the water cooled HW permanent magnets synchronous motors offer torque from 4 to 1250 Nm for speed up to 50000 rpm.

The main points

Permanent magnets, cold rotor technology
Low inertia and higher compactness compared to asynchronous solution
High torque at low speed and speed at constant power up to 50000 rpm
Speed range ratio at constant power up to 10
Torque from 4 to 1250N.m
Increased machining precision
Better surface finishing
High acceleration / deceleration for rapid cycles


Examples of applications

Because of their extremely high quality, HW motors are specially adapted to high performance electrospindle construction: machining centres, milling, turning, grinding...

The DIGIVEX Drive series provides optimum control.

Decisive advantages for spindles

The HW motors are composed of a rotor with permanent magnets and a wound stator. Compared with asynchronous motors, there is no losses at the rotor and therefore no heating.				For spindles, the advantages of HW motors are decisive : • Rough and finish machining with the same spindle • No axial expansion of shaft, for more precise machining • Longer bearing lifetime • Very low vibration level for higher quality surface finishing • For a motor of the same volume, the torque is 2.5 times higher than with an asynchronous solution • Simpler construction and easier maintenance • Greater acceleration / deceleration for more rapid cycles
The range is available for :				• Torque from 4 to 1250 Nm (35 to 10900 in-lb.) • Speeds up to 50,000 rpm • Power from 2.3 to 100 kW (3 to 134 hp) Details and motor data sheet

Delivered as motors in kit form to be incorporated directly into the mechanics of the electrospindle, the motorisation consists of : a stator, a rotor, a large diameter resolver and a drive of suitable power.

Download the product data in PDF format

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