Stepper motors for demanding positioning tasks

Two-phase stepper motors

The rotor of a two-phase stepper motor with disc magnet consists of a thin, homogeneous disc.

The very low inertia enables high acceleration values. The disc is magnetised precisely with 10 pole pairs, resulting in a high angular accuracy. The stator is only located on one side of the motor. Four windings (two per phase) generate the axial magnetic field.

Special versions of this motor type are well suited for use in microstep applications as there is no cogging torque.

The FAULHABER stepper motors are multi-pole, two-phase motors with permanent magnets. Through the use of rare-earth magnets, an exceptionally high power to volume ratio is achieved. With its very low inertia, the rotor design predestines the motors for use in applications that require very high accelerations or rapid change of direction. Another important advantage is that they can start with a relative high speed right from the very first step, further shortening the time required for the acceleration ramp. With their short length and low weight, stepper motors can also be used in integrated systems.

Thanks to their robust design and simple operation, they are likewise ideally suited for the most difficult operating conditions. Due to the various operating possibilities of the full-, half- or microstep electronics, precise speed and motion control can be established in an open control loop.

The FAULHABER stepper motors can be combined with lead screws or gearheads and thereby offer functionality that is unmatched on today's market.

You can find further information on minimising step losses, the implementation of the redundancy principle in a miniature stepper motor and the facts and myths on micro-stepping operation in our stepper motor tutorials:

Implementation of Redundancy in a Miniature Stepper Motor

Stepper Motor Technical Note: Microstepping Myths and Realities

How to prevent step losses with Stepper Motors