Xem Studiomeasured geometryLibrary › Hardware › Bolt-on counterweight arcs R15, R20 and R25
bolt-on-counterweight-r20
bolt-on counterweight arc, outer R20 / inner R12, 120°, 6 thick, 3 × M3 clearance (Ø3.2) at R16; add to any flywheel or disc opposite the pin
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
| file | bolt-on-counterweight-r20 |
|---|---|
| outer R | 20 |
| inner R | 12 |
| arc | 120° |
| thickness | 6 |
| holes | 3 × Ø3.2 at R16 |
Let your AI pull this. Add
Set it up →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.From the full sheet
Bolt-on counterweight arcs R15, R20 and R25: every size, notes, mating features and sources. What does a bolt-on counterweight for a flywheel look like?