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Planet carrier for three planets on a 21 mm radius (Ø52 × 5)

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

Also called: planet carrier, planetary carrier, carrier plate, portasatélites, Planetenträger

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

length
52.0 mm
width
52.0 mm
height
5.0 mm

Notes

  • Ø52 × 5 plate with a Ø8 centre bore (turns on the sun's Ø8 shaft) and three Ø5 holes 120° apart on a 21 mm radius for the planet axles (Ø5 dowels): carries 18-tooth planets around a 24-tooth sun inside a 60-tooth ring at module 1.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Planet carrier for three planets on a 21 mm radius size chart

dimensionvalue
plateØ52 × 5 mm
centre boreØ8
planet holes3 × Ø5 on R21

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. 502: 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

planet-carrier-3x-r21carrier plate, z 0..5STEP · 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=planet-carrier-3x-r21

Planet carrier for three planets on a 21 mm radius (Ø52 × 5), isometric render of a generated part
Render of planet-carrier-3x-r21 from the free STEP; not to scale.

Fits with

Epicyclic (planetary) gear train: sun 24, planets 18, ring 60, isometric render of a generated part
Epicyclic (planetary) gear train: sun 24, planets 18, ring 605 sizes★ 1 file

Questions

What is a planet carrier?

Ø52 × 5 plate with a Ø8 centre bore (turns on the sun's Ø8 shaft) and three Ø5 holes 120° apart on a 21 mm radius for the planet axles (Ø5 dowels): carries 18-tooth planets around a 24-tooth sun inside a 60-tooth ring at module 1.