Library › Hardware › Spur gears, module 0.8: 10 to 80 teeth

module 0.8, 25 teeth

module 0.8, 25 teeth: pitch Ø20, tip Ø21.6, root Ø18, face 6.4, bore Ø6

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

teeth25
pitch_dia_mm20.0
tip_dia_mm21.6
root_dia_mm18.0
face_mm6.4
bore_mm6
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

From the full sheet

Spur gears, module 0.8: 10 to 80 teeth (20° involute): every size, notes, mating features and sources. What is the pitch diameter of a module 0.8 spur gear?

Other sizes