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Slotted yoke for a Ø30 eccentric (30 mm slot), with rod

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

Also called: eccentric yoke, slotted yoke, scotch yoke eccentric, yugo ranurado de excéntrica, Exzenterschleife (Kulisse)

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

length
56.0 mm
width
82.0 mm
height
8.0 mm

Notes

  • Rectangular frame whose inner faces are exactly 30 mm apart (the eccentric's diameter) and 44 mm long, with an 8 × 8 rod and a Ø3 end hole: the eccentric turns inside and the frame moves straight, harmonically, without a strap.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Slotted yoke for a Ø30 eccentric (30 mm slot), with rod size chart

dimensionvalue
slot30 × 44 mm
frame56 × 42 × 8 mm
rod8 × 8 × 40, Ø3 hole

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. 90: 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

eccentric-slotted-yoke-30yoke, z 0..8, moves along YSTEP · 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=eccentric-slotted-yoke-30

Slotted yoke for a Ø30 eccentric (30 mm slot), with rod, isometric render of a generated part
Render of eccentric-slotted-yoke-30 from the free STEP; not to scale.

Fits with

Eccentric in a slotted yoke (harmonic straight-line motion), isometric render of a generated part
Eccentric in a slotted yoke (harmonic straight-line motion)3 sizes★ 1 file

Questions

What is an eccentric yoke?

Rectangular frame whose inner faces are exactly 30 mm apart (the eccentric's diameter) and 44 mm long, with an 8 × 8 rod and a Ø3 end hole: the eccentric turns inside and the frame moves straight, harmonically, without a strap.