Xem Studiomeasured geometryLibrary › Hardware › Crank discs Ø30 for a Ø3 crankshaft, 10 to 20 mm stroke
crank disc Ø30 for a Ø3 crankshaft (the crank head's 623 towers), pin at 10.0 mm (20 mm stroke), M3 grub
crank disc Ø30 for a Ø3 crankshaft (the crank head's 623 towers), pin at 10.0 mm (20 mm stroke), M3 grub
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 | crank-disc-b3-stroke20 |
|---|---|
| stroke | 20 |
| pin offset | 10.0 |
| disc | Ø30 × 6 |
| bore | 3 |
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
Crank discs Ø30 for a Ø3 crankshaft, 10 to 20 mm stroke: every size, notes, mating features and sources. What crank disc fits a 3 mm crankshaft?