Linear Voice Coil Motors -- Linear Voice Coil Motors with Internal Bearing -- Hollow Core Linear Voice Coil Motors


Linear DC Motors, Voice Coil Motors (VCM) or Voice Coil Actuators (VCA) are the simplest type of electric motors. These motors consist of two separate parts; the magnetic housing and the coil.


Applying a voltage across the terminals of the motor causes the motor to move to one direction. Reversing the polarity of the applied voltage will move the motor to the opposite direction. The generated force is proportional to the current that flows through the motor coil. This force is almost constant in the specified stroke range of the motor.


Voice coil motors do not need commutation and using a position sensor, positioning accuracies of less than one micron or 0.00004 inches are achievable.
 		 Linear Voice Coil Motors

This type of motor is supplied without internal linear bearings and shaft. A customer supplied linear bearing is required to support the moving coil.


 
Linear Voice Coil Motors with Internal Bearing

This type of motor is supplied with internal linear bearings and shaft.


 
Hollow Core Linear Voice Coil Motors

These motors, having a large axial hole throughout the entire coil and body structure are ideal for optical focusing, scanning and other precision positioning applications.

This type of motor is supplied without internal linear bearings and shaft. A customer supplied linear bearing is required to support the moving coil.