Library › Hardware › Mechanism parts ·

Pawl for the 24-tooth Ø40 ratchet, pivot to nose 26.87 mm

What pawls does the double-pawl lever carry? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: ratchet pawl, click, trinquete, Schaltklinke

Exact dimensions. True size, with no printing tolerance added.

length
30.87 mm
width
8.0 mm
height
6.0 mm

Notes

  • 6 mm pawl with a Ø8 boss on a Ø3 pivot and a nose whose end face lies on the steep face of a ratchet tooth over 80 % of its depth (face contact). Pivot to nose 26.87 mm; one of the two pawls of the double-pawl lever (pivots at (12, 20) and (12, -17) from the fulcrum).
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Pawl for the 24-tooth Ø40 ratchet, pivot to nose 26.87 mm size chart

dimensionvalue
thickness6 mm
pivotØ3
pivot to nose26.87 mm

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 206: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

lever-pawl-24t-d40-lowerpawl, pivot at origin, nose on +X, z 0..6STEP · STL
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 →

Plain text: sheet.txt · JSON: /api/geometry?object=lever-pawl-24t-d40-lower

Pawl for the 24-tooth Ø40 ratchet, pivot to nose 26.87 mm, isometric render of a generated part
Render of lever-pawl-24t-d40-lower from the free STEP; not to scale.

Fits with

Questions

What pawls does the double-pawl lever carry?

6 mm pawl with a Ø8 boss on a Ø3 pivot and a nose whose end face lies on the steep face of a ratchet tooth over 80 % of its depth (face contact). Pivot to nose 26.87 mm; one of the two pawls of the double-pawl lever (pivots at (12, 20) and (12, -17) from the fulcrum).