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 Mean Radius of Collar?
Mean Radius of Collar calculator uses Mean Radius of Collar = (Outer Radius of Collar+Inner Radius of Collar)/2 to calculate the Mean Radius of Collar, Mean Radius of Collar is the average radius of the collar surface where friction occurs, calculated as the arithmetic mean of the inner and outer radii of the collar. Mean Radius of Collar is denoted by Rc symbol.
How to calculate Mean Radius of Collar using this online calculator? To use this online calculator for Mean Radius of Collar, enter Outer Radius of Collar (R1) & Inner Radius of Collar (R2) and hit the calculate button. Here is how the Mean Radius of Collar calculation can be explained with given input values -> 0.04 = (0.05+0.03)/2.