Planet carrier disc Ø52 × 5 with a Ø10 × 13 planet boss at 30 mm — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/planet-crank-carrier-disc-52-r30-boss10/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 61.0, width 52.0, height 18.0
- Ø52 × 5 disc with a Ø10 centre hole (turns on the fixed sun's Ø10 shaft) and a Ø10 × 13 boss 30 mm out on which the planet gear turns: the 'large disc' of Brown's figure that carries a 30-tooth planet round a fixed 30-tooth sun (centre distance 30).
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
disc  Ø52 × 5 mm
centre hole  Ø10
planet boss  Ø10 × 13 at R30

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala
- 507movements.com: Brown's movement No. 142: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_142.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/planetary-crank-variable-traverse-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/planet-crank-carrier-disc-52-r30-boss10/index.json
API: https://xemstudio.com/api/geometry?object=planet-crank-carrier-disc-52-r30-boss10