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Cardan joint cross (spider) 14 × 14, 7 mm arms, Ø3 pin holes

What is the cross of a universal joint? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: universal joint spider, u joint cross, cardan cross, cruceta de cardán, Kardankreuz

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

length
14.0 mm
width
14.0 mm
height
7.0 mm

Notes

  • Cross of two 7 × 7 mm arms, 14 mm across (the fork gap): a Ø3 hole straight through one arm for the long pin (dowel 3 × 20) and two Ø3 holes in the other arm from its ends to 2 mm from the centre for two short pins (dowel 3 × 10); the four pin ends are the trunnions the yokes turn on.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Cardan joint cross (spider) 14 × 14, 7 mm arms, Ø3 pin holes size chart

dimensionvalue
arms7 × 7 mm, 14 across
through holeØ3 along X
blind holes2 × Ø3, 5 deep, along Y

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. 50: 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

cardan-spider-14spider, centred on the originSTEP · 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=cardan-spider-14

Cardan joint cross (spider) 14 × 14, 7 mm arms, Ø3 pin holes, isometric render of a generated part
Render of cardan-spider-14 from the free STEP; not to scale.

Fits with

Universal (Hooke / Cardan) joint, drawn at 30°, isometric render of a generated part
Universal (Hooke / Cardan) joint, drawn at 30°4 sizes★ 1 file

Questions

What is the cross of a universal joint?

Cross of two 7 × 7 mm arms, 14 mm across (the fork gap): a Ø3 hole straight through one arm for the long pin (dowel 3 × 20) and two Ø3 holes in the other arm from its ends to 2 mm from the centre for two short pins (dowel 3 × 10); the four pin ends are the trunnions the yokes turn on.