As a result of systematic developments in materials, geometry, and the tribo-system, SMS giant torque spindles can transmit torques up to 40% higher than conventional slipper-type spindles. That means they out-perform even high-end cardan shafts. Moreover, SMS giant torque spindles are safe to operate without expensive safety clutches.
Traditionally, slipper-type spindles are used to transmit the drive torque to the work rolls. It's due to their simple and sturdy design that they easily absorb overloads and shocks in the elastic range. That gives them an extremely long service life.