Threadless Ball Screw. No More Backlash
thingiverse
A type of ball screw I came across in a trade journal two decades ago is utilized in linear actuators. Thread-less, it offers benefits like no backlash or costly threaded rods and can slip without damage beyond force thresholds, making it ideal for 3D printing. Updates include double units, bearing mounts with varying angles and adjustable tension, a BOM, and base additions. Instructions feature components like 625 ball bearings, 5mm screws, thin hex nuts, an 8mm hardened shaft, and printed STL files for the ball-screw. Assemble the bearings, washer, and nuts onto the shaft, then secure them in the bearing mount. Adjust the fit by reprinting the mount at varying scales as needed. A washer may be added under screw heads if they protrude. Another option includes a mini adjustable BOM with 623ZZ bearings, 3mm screws, and an adjusted STL file for the bearing mount.
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