FreeOpenSCAD Threadless Ballscrew - Highly Customizable
Thingiverse
6 model
Free
FreeOpenbuilds v-slot X axis for Lulzbot TAZ 4 or 5 printers or the AO-10X ballscrew modification
Thingiverse
FreeBall Bearing Nut for TR8-2-D2 Screw
Thingiverse
FreeDerivative of Threadless ball screw.
Thingiverse
FreeHevORT ZR V2 - MGN Rail assisted self leveling Z Axis with Ball screw and Z Wobble Management
Thingiverse
FreeHevORT ZR V2.5 - MGN Rail assisted self leveling Z Axis with Ball screw and Z Wobble Management
Thingiverse