H2W Introduces Force Voice Coil Actuator for Various Applications
H2W Technologies has developed the world’s highest force commercially available non-commutated DC linear actuator, otherwise known as a direct drive voice coil actuator. The model NCC08-75-3000-3X is capable of generating a continuous force of 300 pounds [1330 N] and a peak force of 900 pounds [4000 N] at a duty cycle of 10% (i.e. 1 second on, and 9 seconds off). A moving mass of just under 8 lbs [3.6 kg] allows for a maximum theoretical continuous acceleration of nearly 38 G’s.
The NCC08-75-3000-3X has a stroke of 0.8 in [20 mm] and a motor constant of 17.6 lbs/sqrt(watt) [323 N/sqrt(watt)]. The voice coil motor requires 4 amps of continuous current and 12 amps of peak current in order to generate the specified forces. The massive actuator has a diameter of 7.47 in [190 mm] and a retracted length of 8.15 in [207 mm].
The moving coil design ensures a hysteresis free movement as the bobbin is constructed of aluminum while the non-commutated coil allows for ripple-free motion and no cogging. The voice coil actuator has been designed with a thru hole in the magnet and coil assemblies. This allows for the integration of a shaft and bearing system through the center of the motor. Alternatively, the actuator can be used in many applications where a thru hole would be necessary such as focusing applications or fiber optic routing.
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