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> Yr.2007
> Lead screw linear actuator thrust bearing cnc pcb mill
Lead screw linear actuator thrust bearing cnc pcb mill
NO INTERNATIONAL SALES-INCLUDING CANADA
This is used and very nice precision leadscrew. It travels approx. 1 inch per 12-13 turns. The shaft is 8.2mm. The threaded portion is approx 4.670 and the leadnut is approx 1.60 overall...The travel is approx 3" . I included some pics I got off the net showing how the lead nut works and some specs on the ZKLN series shaft bearing. Interestingly, instead of recirculating ball bearings, the lead screw has approx.50 threads per inch and the nut houses approx 5-6 50tpi shafts that contact the main shaft and each of the threaded shafts has a gear on either end.The lead nut and the threaded shafts in the lead screw provide excellent anti-backlash properties and work together like a planetary gear type arrangement. The shaft support bearings is a precision double row angular contact type bearing.
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