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.*
5 mm Shaft Shear-Pin Breakaway Hub
This print-in-place breakaway coupler works like a snowblower shear bolt or the sacrificial gear in a blender. A 5 mm motor shaft drives an inner hub, which is clamped by an M3 set screw over a captured nut. Two cross pins cut from 1.75 mm filament lock the hub to a 44 mm output flange with four M3 holes on a 36 mm circle. On a jam the pins shear instead of the motor or gearbox. To reset, push the stubs out and insert two new 15 mm snips of filament.
5 mm Shaft Slip Clutch Torque Limiter
A print-in-place slip clutch that mounts on any 5 mm motor shaft (NEMA 17, 37 mm gearmotor, RS-550 pinion shaft) and lets the output ring break away at a set torque instead of stripping a gearbox or stalling a drive. 46 mm OD x 30 mm tall: an inner hub with a 5.3 mm slip-fit bore and an M3 heat-set insert for the grub screw, three flexible fingers snapping into six detent scallops, and a 38 mm output bolt circle with four M3 clearance holes for a pulley, arm or wheel.