Nook’s modular ball screw stepper actuators are available in two styles, rotator and a captive. The rotator is the base unit for the captive unit, and the captive option adds an extruded body and keyed nut adapter with extension tube. This option also adds the ability to install travel limit switches. A rubber retract stop bumper is included to prevent accidental over-travel. The products also include an external ball bearing to absorb additional axial forces.

The modular ball screw stepper actuators come with either NEMA 17 or NEMA 23. The NEMA 17 option utilizes Nook′s 6mm x 1.25mm lead stainless steel ball screw assembly with the new 3-circuit ball nut assemblies. The NEMA 23 option utilizes Nook′s 10mm x 2mm lead stainless steel ball screw assembly with 3-circuit ball nut assemblies.

Nook′s mini stainless steel ball screw actuators are available in standard and enclosed options and feature exterior components made from FDA approved materials, such as 300 Series stainless steel. The enclosed version is designed to meet FDA guidelines capable of attaining the IP69K wash down rating.

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