Coordinate Measuring Machine

Trapezoidal screws Trapeziodal screws (hereinafter also Tr screws) with metric trapezoidal thread (according to ČSN 014050) are standard structural components used as self-locking transition of the rotary motion to linear motion with low efficiency, given by the principle of their construction, by the lubrication and by the material of the friction thread surfaces. These lead screws bear only axial load and relevant torque whereas backlash between the screw and the nut should be decreased by special construction. Trapezoidal screws are supplied as a complex assembly with matched nut or nuts according to the request of the customer. Their material, application, lubrication and adjustment of backlash, which occurs during the operation, are determined by the custom practice of the particular customers and it is not solved by the manufacturer, which provides only consulting and advisory services. Product range We offer a wide range of trapezoidal screws with metric thread: Diameters from 16 mm to 120 mm Thread pitch from 4 mm to 14 mm Pitch from 3 to 50 mm, lengths up to 6,2 m Maximum thread length 12 m (according to diameter and precision class)Precision classes: Thread shafts and nuts are manufactured in three precision classes: 1 – fine – ground profile of the shaft thread (used in thread grinding machines, CNC boring machines and other machines with higher accuracy), 2 – intermediate (used in cutting machines, lathes, milling machines, horizontal boring machines), 3 – rough (used in machine tools without any special requests regarding accuracy). The precision of the thread is determined by: the system of thread tolerances, deviation of thread pitch, accuracy of shape and position of the thread, thread surface roughness.Trapezoidal screws : www.ks-kurim.cz/en/trapezoidal-screws/