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Mushroom (curved-face) cam follower, R25 face, 8 mm stem

What is a mushroom follower? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: mushroom follower, spherical faced follower, curved face follower, seguidor de seta, Pilzstößel

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

length
32.5 mm
width
59.0 mm
height
6.0 mm

Notes

  • Follower whose 36 mm wide face is an arc of 25 mm radius on an 8 × 6 mm stem: the curved face tolerates misalignment and wears more evenly than a flat one; the cam is the pitch curve offset by 25 mm.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Mushroom (curved-face) cam follower, R25 face, 8 mm stem size chart

dimensionvalue
face radius25 mm
face width36 mm
stem8 × 6 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. 138: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

mushroom-follower-r25follower, face apex at y = 0STEP · 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.
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Plain text: sheet.txt · JSON: /api/geometry?object=mushroom-follower-r25

Mushroom (curved-face) cam follower, R25 face, 8 mm stem, isometric render of a generated part
Render of mushroom-follower-r25 from the free STEP; not to scale.

Fits with

Plate cam with mushroom (curved-face) follower (cycloidal rise), isometric render of a generated part
Plate cam with mushroom (curved-face) follower (cycloidal rise)5 sizes★ 1 file

Questions

What is a mushroom follower?

Follower whose 36 mm wide face is an arc of 25 mm radius on an 8 × 6 mm stem: the curved face tolerates misalignment and wears more evenly than a flat one; the cam is the pitch curve offset by 25 mm.