World's smallest linear actuator

Haydon Switch & Instrument Inc. offers a Size 8 hybrid external linear actuator, the size of 21 mm square (0.8") said to make it the world's smallest linear actuator.

Haydon's external linear actuator replaces four different components ñ a motor, coupling, lead screw and nut. Shaft to lead screw couplers are not needed with this design. The rotating acme stainless steel lead screw is incorporated into the motor's rotor.

This external linear hybrid actuator is available in a wide variety of resolutions ranging from 0.0015 to 0.04 mm per full step and delivers thrust of up to 4.5 kg. A standard size 8 external linear has 4" of visible lead screw; however lead screw length, coil termination, and the external nut, can be customized to fit application requirements.
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