Hysteresis Tension Brakes for winding / un-winding operations

By helping control torque variations, tensioning brakes preserve drive train life in winding / un-winding operations. By relying on magnetic resistance (hysteresis), Sjogren's brakes require no external power source and have no mechanical wear parts (other than ball bearings). The four most common applications are: material unwind operations for payoff applications; coilwind operations for constant tension using a nip roll; material handling operations for electric motor overload protection; and tightening operations for repetitive cycling/tightening.

The unit is mechanically assembled (not welded), making replacement of bearings a simple field repair

The magnet-based technology maintains permanent, consistent levels of resistance and experiences no friction wear

Repeatable and recordable settings make it easy for the operator to control torque precisely, and to reliably vary settings from one application to another