Cone pulley Ø24 → Ø56 × 64, Ø8 bore — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/cone-pulley-24-56x64-bore8/  (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 56.0, width 56.0, height 64.0
- Straight cone from Ø24 to Ø56 over 64 mm (half-angle 14.04°), Ø8 bore. Two of them mounted head to tail give a speed ratio that changes smoothly as the belt is moved along.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
diameters  Ø24 → Ø56
length  64 mm
half-angle  14.04°
bore  Ø8

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. 9: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_009.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/cone-pulleys-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/cone-pulley-24-56x64-bore8/index.json
API: https://xemstudio.com/api/geometry?object=cone-pulley-24-56x64-bore8