• Track Parts Corporation

Mechanical Actuators, Micro Miniature

Duff Norton, USA, manufactures a wide range of mechanical actuators. The range includes machine screw and ball screw actuators suitable for loads,from 1/4 to 250-T, stainless steel machine screw actuators, micro-miniature actuators, and high duty cycle actuators. Duff Norton machine screw and ball screw actuators can be used in a single actuator arrangement or in a multiple actuator arrangement along with a complete line of accessories to provide for a mechanically interconnected and permanently synchronized system. With readily available Duff Norton accessories, connecting shafts can be coupled to the actuator, gearboxes can provide for the rotation and connection for a multiple actuator arrangement, and limit switches can be used to limit travel and provide for an up stop and down stop. The machine screw actuators offer positive mechanical action, precise positioning and uniform lifting speeds. Standard configurations include upright or inverted units with translating or rotating lifting screws and top p ate, duraded or clevis ends.Ibe anti-backlash option reduces vertical backlash resulting in smooth, precise operation and minimal wear. Duff Norton stainless steel actuators incorporate all standard features and can be used in severe environments where other materials are inadequate. All exposed surfaces are made of SS 316 including the lifting screw, housing, and shell cap. Options include: anti-badklash and keyed lifting screws for translating screw models. The ball screw actuators provide high efficiency and high speed in one linear positioning package. The positive action of low friction ball screw and nut design provides longer life at load and requires less power to achieve or specified thrust. Ball screw actuators can be used individually in tandem or as part of a longer mechanical system. With lifts up to 20 feet, ball screw actuators offer the perfect solution to many linear positioning applications. High duty cycle actuators are specifically designed for continuous operation. The gear set operates in an oil bath for thermal efficiency and long life. With rated load capacities up to 13,000 pounds and mechanical efficiency as high as 70%, high duty cycle actuators provide efficient, continuous service. Duff Norton micro miniature actuators actuate up to 1000 pounds, allow for extremely fine adjustment and are corrosion resistant. They are equipped with anti-backlash nuts to minimise vertical backlash between the screw and worm gear nut. Manual operation is simple with an easy to use hand knob. Metric actuators are available in sizes from 10 km through 980 km. These have metric bearings with metric bolt centres. The metric screw diameters have trapezoidal threads and all fasteners are metric. Duff Norton mechanical actuators are used in a wide variety of applications, from the steel and paper industries for roll adjusting to the aluminium industry for adjusting anode arrangements, to the satellite communication industry for precise positioning on earth station antennas.