Profile: Duff-Norton offers a complete line of both standard and custom engineered machine screw actuators, stainless steel and ball screw actuators, micro-miniature as well as high duty cycle actuators. We deal with electromechanical actuators for linear actuation needs. We offer Spiracon®, which is a planetary roller screw, converts rotary motion to linear movement. Our hydraulic jacks are used in a wide variety of industrial environments. We are certified to ISO 9001:2000 standard.