What is the purpose of collar in screw jack?
A rotating collar on the head of the screw has holes into which the handle, a metal bar, fits. When the handle is turned clockwise, the screw moves further out of the base, lifting the load resting on the load table. In order to support large load forces, the screw usually has either square threads or buttress threads.
How to Calculate Torque Required to Overcome Friction at Collar?
Torque Required to Overcome Friction at Collar calculator uses Total Torque = Coefficient of Friction For Collar*Load*Mean Radius of Collar to calculate the Total Torque, Torque required to overcome friction at collar is the measure of the force that can cause an object to rotate about an axis. Total Torque is denoted by T symbol.
How to calculate Torque Required to Overcome Friction at Collar using this online calculator? To use this online calculator for Torque Required to Overcome Friction at Collar, enter Coefficient of Friction For Collar (μc), Load (Wl) & Mean Radius of Collar (Rc) and hit the calculate button. Here is how the Torque Required to Overcome Friction at Collar calculation can be explained with given input values -> 0.1696 = 0.16*53*0.04.