Nook Industries (Cleveland, OH) offers Series 500™ programmable actuators designed for continuous duty and long service life. They incorporate a direct or toothed-belt drive for high mechanical efficiency. Ball screw-driven programmable actuators are made with high-strength materials, and are available in parallel and in-line models with either a servomotor or stepper motor. The screw shaft is constructed with medium-carbon, induction-hardened alloy steel, and the ball nuts are manufactured from high-grade bearing steel. Both ball screw and nut are heat-treated to a surface hardness of 56 HRC.

Acme screw-driven programmable actuators are made from 4140 alloy steel with a black-oxide finish and a 2C thread form, and are available in parallel and in-line models with either a servo or stepper motor. Acme nut material is selected for low friction, minimum wear, long life, and clean operations.

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