Miniature voice coil actuators

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13th July 2016

Source: H2W Technologies

Miniature versions of both moving coils and moving magnet voice coil actuators are now being offered by H2W Technologies. H2W has built its smallest moving magnet voice coil actuator (NCM01-04-001-2IB) to date, with an outside diameter of 0.40" (10mm) and a length of 0.735" (18.8mm). It has a stroke of 0.10" (2.5mm) and generates a continuous force of 0.10lbs (0.45N) and a peak force of 0.30lbs (1.35N). It weighs just 0.20oz (5.7g).

This actuator utilizes a hardened shaft and sliding contact bushing to ensure long life, and is ideal for oscillatory motion. The compact design allows the actuator to be used in a number of handheld applications. Moving magnet voice coil actuators have built-in bearings so there is no need for the customer to add mass or complexity to their motion system to integrate a bearing, and there are no moving leads to worry about cable management.

The smallest moving coil voice coil actuator they offer (NCC01-04-001-1X) has an outside diameter of 0.44" (11.1mm) and a length of 0.36" (9mm). It has a stroke of 0.13" (3.2mm) and generates a continuous force of 0.06lbs (0.27N) and a peak force of 0.18lbs (0.8N). It weighs just 0.20oz (5.7g).

The bobbin has been constructed of plastic to prevent any damping forces that a metallic bobbin would create. The compact design allows the actuator to be used in a number of handheld applications.

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