Mechanical Actuators

• A screw jack is a device used to apply a force, push and pull, or move to a position and hold by mechanically converting rotary motion into linear motion
• Screw jacks (mechanical actuators) capacities from 1/4 ton to 350 tons
• Available in machine screw, ball screw, stainless steel machine screw actuators, micro-miniature actuators, high duty cycle actuators, motorized machine screw and ball screw actuators, electric cylinders and motor control systems
• Accessories include miter gear boxes, c-face motor adapters, limit switches, transducers, visual and digital position indicators, couplings, ball screws and ball screw systems, and locking rings
• Can be used as alternatives to hydraulic and pneumatic systems

Linear Actuators

• Duff-Norton manufactures linear actuators and electric cylinders
• Linear Actuator products include TracMaster and LinearMaster Actuators, Modular Actuators and Electric Cylinders
• Linear actuators are available in capacities ranging from 27 pounds to 100 Tons, gear or belt driven, acme screw and ball screw systems with various AC and DC input voltages
• Duff-Norton Linear Actuators are specially designed for a variety of commercial and industrial applications
• These actuators are used for opening and closing, tilting and pivoting, lifting and lowering and positioning
• Custom designs are also available for special applications
• Linear Actuators are now being used in place of pneumatics and hydraulics when leaking hydraulic oil is a concern

Rotary Unions

• Duff-Norton manufactures Rotary Unions and Swivels in single and multi-port configurations. Rotary Unions are also known as rotary joints, rotating joints, and rotating unions.
• Rotating joints are used to transfer media from a stationary supply to a rotating component such as a drum or a roll
• Specifications: Pressure - 10,000 psi max • Temperature - 600 degrees F max • Speed - 3,500 RPM max • Sizes - 1/8" to 12" max
• Media: Water • steam • hot oil • hydraulic fluid • non toxic - non flammable gases
• Primary Industries: Chemical • printing • rubber • metals • textiles • plastics • food • paper • machine tools • building materials • construction equipment
• Basic Applications: Provide heating or cooling media to control the surface temperature of a drum or roll, transfer air or hydraulic fluid to moving components, add fluids to mixers while in motion

ACME and Ball Screws and Nuts

• Duff-Norton has been manufacturing Acme and Ball Screws and Nuts for our actuator products for decades
• Offers an expanded assortment of screws and nuts for your application requirements
• Acme Screws & Nuts offer excellent load ratings and Centralizing class screw & nut assemblies
• Ball Screws & Nuts offer excellent load ratings, 90% efficiency, and long predictable life ratings

Stage and Theater

• Duff-Norton designs and manufactures a wide range of equipment for stage and theater applications
• Systems can be designed to meet our customers specific artistic and application requirements
• Products are designed for lifting stages, moving props, lowering podiums or shifting floors

Duff-Norton Product Range

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