Two-roller cam yoke, roller pins 44 mm apart, 8 × 8 rods — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/two-roller-cam-yoke-44-rods-8/  (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 142.0, width 18.0, height 5.0
- 5 mm plate with two Ø3 holes 44 mm apart for the roller pins, a 28 × 10 slot clearing the Ø8 cam shaft over the whole stroke, and an 8 mm rod 40 long at each end; it sits 0.5 mm above the cam and the rollers hang under it on their pins.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
roller pins  2 × Ø3, 44 mm apart
shaft slot  28 × 10
rods  2 × 8 × 40
plate  5 mm

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. 117: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_117.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/cam-between-rollers-yoke-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/two-roller-cam-yoke-44-rods-8/index.json
API: https://xemstudio.com/api/geometry?object=two-roller-cam-yoke-44-rods-8