The world’s highest-force, commercially available, non-commutated DC linear actuator is capable of generating a continuous force of 300 pounds and a peak force of 900 pounds at a duty cycle of 10 percent.
H2W Technologies model NCC08-75-3000-3X direct drive voice coil actuator can move a mass of just under 8 lb. with a maximum theoretical continuous acceleration of nearly 38 Gs. It has a stroke of 0.8 inches and a motor constant of 17.6 lb./sqrt(watt).
The voice coil motor requires 4 A 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 incorporates a bobbin constructed of aluminum with a non-commutated coil which allows hysteresis-free movement. It has also been designed with a through-hole in the magnet and coil assemblies. This allows for the integration of a shaft and bearing system. Alternatively, the actuator can be used in many applications where a through-hole would be necessary such as focusing applications or fiber optic routing.