What is axial clearance and how can it be prevented?Axial clearance describes the lost motion, the "dead travel", on the lead screw as a result of the gap between the lead screw and the lead screw nut. The term clearance is also often associated with this, but the correct technical term is axial clearance.
You can find more information on reducing axial clearance here.Zero-backlash lead screw nutOne of the most precise solutions is the ZB lead screw nut. It consists of several components and adjusts itself over its service life. It is particularly suitable for lead screw drives with high helix threads for the rapid adjustment of small loads. The clearance-free principle ensures minimal clearance over the entire service life. Ideal for precise positioning and feed movements in medical, laboratory and printing technology as well as in the wide fields of life sciences.
The lead screw nut consists of a support nut, a fixing collar with a torsion spring, a friction washer and the axial element. The pre-tension is applied to the thread system with the aid of the torsion spring.
► Minimal axial backlash over service life
► More precise positioning and feed movements
► In dryspin® and drylin® high helix threads
► Flange lead screw nut
► Thread direction: RH
► Material: iglidur® J
Important note:A standard lead screw nut should be used in applications with high loads, high temperatures, or in heavily contaminated environments. The reason for this is that the effect of all three principles is cancelled out by excessive load. For this reason, the maximum static axial loads are specified separately for each lead screw nut variant.
