Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Carriage Clevis Output Tower
This clevis output is part of the 'NEMA17 Leadscrew Push-Pull Actuator' kit. Its 40 x 36 x 5 mm base bolts to the carriage top with four M3x10 screws. They go through 3.4 mm holes on the 20 x 20 mm MGN12H pattern, with 6.5 mm counterbores. Two gusseted ears stand 35 mm tall with an 8.4 mm gap and hold an M3x20 pin and a nyloc 28 mm up, across the actuator axis. The ears are 12 mm wide so that a hex key can reach all four screws.
LM8UU Twin-Rod Leadscrew Carriage
The moving carriage for the 'NEMA17 Leadscrew Push-Pull Actuator' kit. The 30 x 84 x 32 mm block takes two press-fit LM8UU bearings (15.05 mm pockets) on 8 mm rods set 60 mm apart, and a T8 flange nut that screws into four radial slots with M3x12 self-tapping screws. The top face has four M3 heat-set bores on a 20 x 20 mm pattern that mount the clevis output tower.
NEMA17 Leadscrew Motor End Block
Motor-end block for a DIY linear actuator. It holds a NEMA 17 stepper on the 31 mm M3 bolt pattern and 22 mm pilot, with two 8 mm guide rods 60 mm apart, each locked by an M3 heat-set grub screw. A flanged foot with M5 holes bolts it to 2020 extrusion or a baseplate, and gussets carry the load.
T8 Flexure Preload Anti-Backlash Nut Block
A 70 x 56 x 30 mm carriage block that holds two T8 brass leadscrew nuts, one on each end face, and removes backlash by pushing them apart. The end plate for the second nut floats on a pair of parallel 1.6 mm flexure blades: squeeze it about 0.3 mm in a vise, bolt on the nut, and the blades hold both nuts against opposite flanks of the thread. A 0.8 mm hard stop stops the blades from being bent too far, and radial M3 slots (r 7.5–11.5 mm) fit a range of nut flange patterns. It mounts on a carriage with four M3 heat-set inserts underneath.
NEMA 17 Trunnion Pivot Actuator Mount
A trunnion collar that bolts to the face of a NEMA 17 leadscrew actuator (31 mm M3 pattern, 22 mm pilot) so the whole actuator can rock as it extends, which you need for hatches, flaps and strut-style lifts. Each side ear takes two 608 bearings (22.05 mm press pockets), and an 8 mm rod or bolt goes through them into your fork. The part is 112 x 30 x 46 mm and prints flat with no supports.
M4 Threaded Rod Micro Slide Carriage
A 44 x 30 x 14 mm slide carriage for small linear actuators. It is driven by M4 threaded rod through a drop-in M4 hex nut (7 mm across flats) and rides on two 4 mm guide rods set 30 mm apart. It's meant for camera sliders, gripper strokes and small robots driven by N20 or micro-stepper motors, where T8/NEMA 17 hardware is too big. Four M3 heat-set insert holes on an 18 x 10 mm pattern on top take the payload.
Linear Actuator Swivel Clevis Mount
A print-in-place two-axis end mount for 12 V linear actuators: a 64 x 56 mm base flange with four M5 clearance holes carries a captured swivel yoke that yaws a full 360° on a printed post, while a 22 mm wide clevis with an 8.5 mm cross bore takes the actuator's own 8 mm rod-end pin 19 mm above the mounting face. It replaces the brand-specific bracket-and-pin kits that cost as much as the actuator, and the free yaw axis stops cheap actuators from binding on vent flaps, coop doors, gates and solar trackers. Overall 64 x 56 x 36 mm; the yoke and base print as one piece with 0.4–0.5 mm running clearance and cannot be pulled apart.
Rack And Pinion Linear Drive Block
A print-in-place module-2 rack and pinion linear drive: a 150 mm toothed rack slides through a 60 x 54 mm housing while a 16-tooth pinion (32 mm pitch dia, 100 mm of travel per turn) turns on a 5.3 mm bore for any 5 mm motor or gearmotor shaft, locked with an M3 screw into a captured M3 nut in the top collar. The housing bolts down through four M4 clearance holes and the rack carries two pairs of M3 heat-set bores on top for your carriage — a cheap linear actuator for gate, hoist, feeder and camera-slider builds where a leadscrew is too slow.