Sample · 20 DP · 20°

18T : 60T · 20 DP on ½" hex

A 3.33 : 1 robot gearbox stage: 20 DP gears on ½" hex shafts, held by retaining rings.

Robotics18 : 60Shaft included

Build it with your AI

Using the CheapCAD Tools connector, design a two-gear drive in Gear Designer: diametral pitch 20, face width 12.7 mm. Gear 1: 18 teeth, profile shift x = 0.05, a hex bar bore, 12.7 mm across flats, inch retaining rings, a retaining ring on the top face, no counterbore. Gear 2: 60 teeth, profile shift x = -0.05, a hex bar bore, 12.7 mm across flats, inch retaining rings, a retaining ring on the top face, spokes: 5 of them, Hub OD 24 mm, Width 6 mm, Rim Depth 7 mm, Fillets 2 mm at the rim and 3 mm at the hub. Check the design, apply any Auto-fix it suggests, then export both gears as STL and give me the download link.

Paste it into Claude, ChatGPT or any AI app with the CheapCAD Tools connector, and it designs this gear set with you, checks it and hands you the files. How to connect your AI.

What's in this design

Gear 1 · 18 teeth

18T gear · tip Ø25.5 mm · x = 0.05 · ½" hex bar, retaining ring on the top face

Gear 2 · 60 teeth

60T gear · tip Ø78.6 mm · x = -0.05 · ½" hex bar, retaining ring on the top face · 5 spokes, rim 7

The mesh · 20 DP · 20°

ratio 3.33 : 1 · centre distance 49.53 mm · contact ratio 1.65 · backlash 0.124–0.234 mm

The link opens both parts in the Gear Designer's 3D Mode, with the sample shafts and their retaining rings, which download with the set. Change the teeth, module or pitch, bore, hub or spokes, then download STL, STEP, DXF or SVG.

More samples