Nexen Group, avaialble from Norman G Clark , is a leading manufacturer of brakes, clutches, torque limiters, overload protection devices, and control systems for a variety of industrial applications in the packaging, machine tool, material handling, automotive, and textile industries. The Air Champ line of clutches and brakes is the industry standard for rotary motion control and power transmission. With a product line of more than 2, 500 components and systems for stop-start, disconnect, and overload protection.