Library › Hardware › Ø400 flywheel on a Ø12 shaft

Ø400 flywheel

Ø400 flywheel: rim r 175..200 × 30, web 5, hub Ø50 × 40, Ø12 bore, two M6 tapped radial holes

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")

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

Ø400 flywheel on a Ø12 shaft: every size, notes, mating features and sources. What does a 400 mm flywheel for a 12 mm shaft look like?