Feed roller Ø30 × 20, Ø5 bore — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/feed-roller-d30x20-b5/  (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 30.0, width 30.0, height 20.0
- Plain Ø30 × 20 roller with a Ø5 bore: two of them, set with their axes skewed, feed and turn a round rod between them.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
diameter  30 mm
width  20 mm
bore  Ø5

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. 365: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_365.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/skew-roller-feed-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/feed-roller-d30x20-b5/index.json
API: https://xemstudio.com/api/geometry?object=feed-roller-d30x20-b5