Library › Hardware › Crank webs: Ø8 bore, Ø3 crank pin at 8, 12 and 18 mm throw
1.5 in crank web
1.5 in crank web: Ø8 bore on the D-flat shaft with an M3 tapped grub hole, Ø3 pin at 8 mm (16 mm stroke); two per crank
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
| spool_in | 1.5 |
|---|---|
| web_od_mm | 28 |
| shaft_bore_mm | 8 |
| pin_hole_mm | 3 |
| throw_mm | 8 |
| stroke_mm | 16 |
| thickness_mm | 5 |
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 webs: Ø8 bore, Ø3 crank pin at 8, 12 and 18 mm throw: every size, notes, mating features and sources. What crank web fits an 8 mm shaft with a 3 mm pin?