Crank disc Ø36 × 5, Ø5 bore, Ø3 pin hole at 12 mm — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/crank-disc-36-pin-r12/  (CC BY 4.0)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 36.0, width 36.0, height 5.0
- Ø36 × 5 disc with a Ø5 shaft bore and a Ø3 crank-pin hole on a 12 mm radius (24 mm stroke).
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
disc  Ø36 × 5 mm
bore  Ø5
pin radius  12 mm (Ø3 hole)

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. 220: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_220.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/offset-slotted-crank-mechanism/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/crank-disc-36-pin-r12/index.json
API: https://xemstudio.com/api/geometry?object=crank-disc-36-pin-r12