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 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.
Winch Fairlead Top Brace
This top brace is part of the 'N20 Self-Locking Worm-Drive Winch' kit. It is a 96 x 50 x 6 mm ribbed plate that bolts across the tops of both 608 bearing cheeks with four M3x12 socket head cap screws, which go into the cheeks' M3 heat-set inserts through 3.4 mm holes with 6.5 mm counterbores. It holds the cheeks square and guides the line through a 32 x 10 mm round-ended hawse slot. The slot has 1.5 mm 45° chamfers top and bottom so the line never rubs on a sharp edge.
Twin-Flange Line Drum
Part of the 'N20 Self-Locking Worm-Drive Winch' kit. This 57 mm long spool has a 30 mm drum between two 42 mm flanges. It slides onto the kit's 8 mm steel axle (8.3 mm bore) and bears on a 608 bearing's inner race through an 11 mm shoulder. It takes three M3 heat-set inserts (4.0 x 8 mm bores on a 22 mm PCD) for the 24T worm wheel's M3x16 screws, plus an M3x8 grub screw and captured M3 nut in the 16 mm hub. The line anchors through a 2.5 mm radial hole into the hollow core or through a 2.5 mm hole in the flange.
24T Winch Worm Wheel
A module 1.5, 30° pressure angle, 24-tooth worm wheel for the 'N20 Self-Locking Worm-Drive Winch' kit. It has a 39 mm OD, a 10 mm face and a 16 x 10 mm hub, with an 11 mm shoulder that bears on the 608 inner race. The 8.3 mm bore slip-fits the 8 mm steel axle, and an M3x8 grub screw with a captured M3 nut locks it. Three M3x16 screws on a 22 mm PCD bolt it to the line drum's heat-set inserts.
Module 1.5 Winch Worm
This is the self-locking worm for the 'N20 Self-Locking Worm-Drive Winch' kit. It is a single-start, right-hand, module 1.5 worm: 15 mm OD, 12 mm pitch diameter, 4.712 mm lead and a 7.1° lead angle. It has a 16 x 10 mm collar with a 3.1 mm bore, 10 mm deep, for the N20 3 mm D-shaft, which an M3x8 grub screw and captured M3 nut hold. Its 4 mm tail pin runs in a 624 bearing (4 x 13 x 5 mm). The overall length is 39 mm, and it prints standing on the collar face.
N20 Worm Motor Sled
This motor sled is part of the 'N20 Self-Locking Worm-Drive Winch' kit. It holds an N20 gearmotor (12 x 10 mm gearbox, 3 mm D-shaft, fixed with two zip-ties) and a 624 tail bearing (4 x 13 x 5 mm, 13.05 mm press pocket) in line with the worm axis. It bolts to the base plate with three M3 heat-set inserts (4.0 mm bores) and M3x10 screws, and measures 22 x 95 x 24.5 mm. The middle insert bore goes through the floor because the floor under the worm is only 6 mm thick.
608 Axle Bearing Cheek
This is the upright bearing cheek for the 'N20 Self-Locking Worm-Drive Winch' kit. Print two. Each cheek is a 9 x 50 x 70 mm plate. It takes a 608 bearing (8 x 22 x 7 mm) in a 22.05 mm press-fit pocket that is 7.1 mm deep and has a 0.5 mm lead-in chamfer. A 12 mm through-hole lets the 8 mm steel axle pass, and four M3 heat-set inserts (4.0 mm x 8 mm bores) fix it to the base plate below and the fairlead brace above.
Worm Winch Base Plate
This is the base plate for the 'N20 Self-Locking Worm-Drive Winch' kit. It measures 146 x 105 x 6 mm and sets the position of every other part: the two 608 bearing cheeks and the N20 worm motor sled each bolt on with M3x10 socket head cap screws, inserted from underneath through 3.4 mm holes with 6.5 mm counterbores, into M3 heat-set inserts. Four more 3.4 mm corner holes mount the winch to your robot. Five rounded windows remove weight, and raised corner marks show where each cheek sits.
5 mm Shaft Capstan Winch Drum
A flanged capstan drum that bolts straight onto a 5 mm stepper or gearmotor shaft (5.3 mm slip-fit bore) and pulls cord — motorising a roller blind or curtain, or driving a cable-tendon robot joint. 37 mm drum core, 48 mm flanges, 54 mm tall, with two M3 heat-set inserts at 90° for grub screws and two 3.6 mm cord anchor holes that let the knot hide inside the ribbed hub cavity.
8 mm Rod One-Way Ratchet Clutch
A print-in-place one-way ratchet clutch: a 70 x 70 mm base plate (4x M4 clearance holes on a 57 mm square) carries a toothed housing, and a knurled Ø64 mm knob-hub rides inside it on three flexure pawls — turn it clockwise and it clicks over 21 teeth (17.1° per step), turn it back and the pawls lock against the steep flanks. The hub takes an 8 mm smooth rod (8.3 mm slip-fit bore) locked by an M3 set screw, so it works as an anti-backdrive for a hand-crank winch, gate or lift. 24 mm tall, prints as two captured pieces with 0.4–0.9 mm clearances, no supports.