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.*
8 mm Shaft Eccentric Sheave And Strap
A print-in-place eccentric sheave and strap that turns 8 mm shaft rotation into a 12 mm push-pull stroke. Use it to drive pumps, shaker tables, sieves or agitators. The 44 mm disc has an 8.3 mm bore set 6 mm off-centre, locked by an M3 heat-set set screw. It turns inside a captive 56 mm strap ring held by a 45° V-groove and bead. The strap's arm ends in an M4 clearance eye at 80 mm centres.
8 mm Shaft Three-Dog Jaw Clutch Half
This is a jaw clutch half with three square dogs, for an 8 mm shaft. Print two identical copies, flip one over and turn it 60° so the two sets of dogs mesh. You get positive drive in both directions, and sliding one half back disengages it, so you can free-spool a winch, a hand crank or a robot drive. Each half has an 8.3 mm slip-fit bore, an M3 grub screw locked by a captured nut, and a 52 mm flange with four 3.4 mm holes on a 40 mm circle for bolting on a gear, pulley or drum.
8 mm Shaft Cycloidal-Rise Plate Cam
This is a plate cam (rise-and-fall disc) for an 8 mm shaft or rod. Over each turn it lifts a 624 roller follower (13 mm OD) by 20 mm and lowers it again, using a cycloidal motion profile so the follower starts and stops without jerk. The profile is offset for the roller's 6.5 mm radius, so the follower moves exactly 26 to 46 mm from the shaft axis. The disc is 8 mm thick and the hub is 22 mm in diameter. An 8.3 mm slip-fit bore and a radial M3 heat-set insert pocket (4.0 mm) for a set screw lock it to the shaft, which suits automata, pumps, stamping rigs and indexing demos.
Module 1.5 Sector Gear 8 mm Hub
A 120° sector gear with 20 involute teeth (module 1.5, 20° pressure angle, 45 mm pitch radius, same as a full 60T gear) on an 8 mm bore hub. It locks to the shaft with an M3 set screw and a captive nut. Use it to drive a pan/tilt, elevation or gripper joint through a limited arc against any standard M1.5 spur pinion, so you don't need a bulky full gear. The teeth are thinned slightly to give FDM backlash, and there are two M3 holes for bolting on an arm or link.
Print-In-Place Silent Roller Freewheel
A roller one-way clutch that prints in one piece: a 54 mm × 12 mm outer ring with five 35° wedge ramps, holding five cone-ended 6 × 11 mm rollers around a 22 mm hub with an 8.3 mm bore for 8 mm rod, locked by an M3 set screw and captured nut. It runs silently with no pawl click. It has no springs, so the rollers take up about 15° before they lock. Five M3 heat-set bores (4.0 mm) let you bolt a pulley, winch drum or crank arm to the ring.