Slotted yoke for a Ø30 eccentric (30 mm slot), with rod — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/eccentric-slotted-yoke-30/  (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 56.0, width 82.0, height 8.0
- Rectangular frame whose inner faces are exactly 30 mm apart (the eccentric's diameter) and 44 mm long, with an 8 × 8 rod and a Ø3 end hole: the eccentric turns inside and the frame moves straight, harmonically, without a strap.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
slot  30 × 44 mm
frame  56 × 42 × 8 mm
rod  8 × 8 × 40, 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. 90: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_090.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/eccentric-and-slotted-yoke-mechanism/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/eccentric-slotted-yoke-30/index.json
API: https://xemstudio.com/api/geometry?object=eccentric-slotted-yoke-30