Friction clutches from Huco Vari-Tork designed with adjustable drag or slip torque. Controlled slip takes place between the hub and housing whenever the load exceeds the set torque.
A simple construction, the pressure is brought on to the plates and friction rings by an adjuster acting through a spring and pressure plate. The load can either be connected to the steel inner hub or the aluminium alloy housing.

"• Compact proportions
• 4 interface styles
• Set screw or clamp connection
• Can be used as a torque limiter, tensioning, overrun device"

As a torque limiter, Vari-Tork interrupts continuity between the power source and load when it reaches a pre-determined level.
As a tensioning device, Vari-Tork typically maintains tension in a filament or tape winding operation by exerting drag on the feed spool.
As an overrun device, Vari-Tork absorbs residual inertia of a motor when the load is braked or reaches a terminal stop.