Calender Roll End Actuator Wear -leads to inability to make small gauge corrections
Electric screw actuators are the most common type of calender roll end positioning system. The screw and nut operate under very high loads and thus experience significant wear even with proper lubrication. As the actuators wear, back lash develops. As the back lash increases, the response to small changes or corrections deteriorates. Also with increased backlash the number of corrections required would increase, which... --more