Follower bar 8 × 5 with Ø3 roller pin hole (75 mm) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/cam-follower-bar-roller-pin/  (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 10.0, width 80.0, height 5.0
- 8 × 5 mm bar, 75 mm long, with a Ø10 round end and a Ø3 hole for the roller pin: rides over the face cam, the roller below it running in the groove; the bar slides in a guide above the cam.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
bar  8 × 5 × 75 mm
pin hole  Ø3

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. 97: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_097.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/grooved-heart-cam-mechanism/

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