Worm gear screw jack line

May 10, 2011

Nook Industries has developed a product line designed to provide efficiency and environmental value to solar energy applications. By expanding the ActionJac™ worm gear screw jack product line, the company provides linear actuation with less electricity consumption, fewer accessories, and no hazardous materials.

The expanded line comprises standard machine screw, ball screw, stainless steel, metric, and trapezoidal screw jack options to meet the specifications of environmentally conscious engineers. Used individually or in multiple arrangements, each worm gear screw jack is built to specification with customized travel lengths and load-handling capacities from 1/4 to 100 tons.

Machine screw jacks feature a lifting shaft made of alloy steel with a minimum tensile strength of 95,000 PSI. The lifting shaft is manufactured with a lead accuracy of approximately 0.004 in. per ft.

Ball screw jacks have a high-efficiency ball screw and nut to reduce the required input torque to approximately one-third the torque required for machine screw jacks.

Stainless steel screw jacks are suitable for use in demanding environments in which corrosion resistance is essential. All external components, including the worm, are manufactured from 300 series stainless steel materials. The stainless steel lifting threads also are precision-formed to Class 2C (centralizing) thread profiles.

The globally accepted metric ball screw jacks provide design engineers with all the efficiency advantages of ball screw technology.

The trapezoidal screw jacks are true metric jacks that include a lift shaft with a special trapezoidal thread form. They are created to stay within ISO standards and yet retain the centralizing feature of 2C Acme threads.

Each model incorporates a worm gear set arrangement that uses an alloy-steel worm, which drives a high-strength bronze worm gear (drive sleeve). The worm shaft is supported on antifriction, tapered roller bearings with external seals to prevent lubrication loss.

Nook Industries * 800-321-7800 * www.nookindustries.com