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Power Transmission

Linear Motion

  • Acme Flanges

    Steel made acme flanges used for mounting objects to an acme lead screw. Designed for use with linear actuators

  • Acme Nuts

    Designed for use with high load bearing Acme threaded screws, studs and rods. Can handle dynamic loads up to 31034 lb and offered in different overall diameters

  • Acme Screws

    Suitable for application where a heavy-load is applied to the screw while maintaining slow rotational speed. Available in different lengths and screw diameters

  • Actuator Accessories

    Includes controllers for use with LT Series actuators and extension cables, and foot switches and handsets for use with LC Series controllers

  • Electro Mechanical Actuators

    Used to convert electrical energy into linear displacement to allow controlled movement of tools / components to a particular position. Feature a gear / belt / acme drive system and offered in a TEFC / TENV / IP66 enclosure

  • Mechanical Actuators

    Ideal for application in satellite dish positioning and for moving heavy-equipment. Include a variety of ball screw and machine screw actuators, and offered in aluminium / cast iron / ductile iron variants in different hp ratings


Rotary Swivel and Expansion Joints

  • Rotary Joint Cartridges

    Includes 5000 & 9000 Series stainless steel replaceable cartridges designed to expand the lifespan and reduce the overall maintenance cost of rotary unions

  • Rotary Joint Elbows

    Stainess steel joint elbows designed to facilitate transfer of water, steam or hot oil from a stationary source to rotating machinery to control the surface temperature. Have a maximum operating temperature of 395 degrees F and can withstand up to 750 psi pressure

  • Rotary Joints and Unions

    Designed to transfer liquids or gases from a stationary source into a rotating or swivelling piece of machinery. Can operate at different temperatures and have a maximum rotational speed of 1000 rpm

With over 137 years of service, Duff-Norton has been offering a wide range of ISO 9001 certified lifting and positioning products ideal for the construction, healthcare, packaging, metal fabrication, food & beverage, transportation and material handling industries. Its extensive catalogue comprises rotary unions, screw jacks, control systems, acme / ball screws & nuts, super cylinders and linear actuators. Duff-Norton DWA Series rotary unions are designed for tool sensing and chucking machine tools and feature high-precision ball bearings that offer smooth operation, even at high speeds. To prevent the occurrence of lubricant washout, these units have a vented configuration, along with an internal bearing protection facility, thereby ensuring reduced maintenance & repair services. Duff-Norton LT Series linear actuators come equipped with a polished aluminium translating tube suitable for linear positioning operations in automation applications. These units further feature a die-cast zinc housing for ensuring structural rigidity and can withstand temperatures ranging from -25 to 65 degrees Celsius. Choose from a wide range of these products along with actuator accessories on Raptor Supplies, an authorised Duff-Norton distributor.