Crank stand for a 623 bearing, 40 / 60 / 80 mm — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/can-engine-crank-stand/  (CC BY 4.0)
Basis: 623 bearing (3 × 10 × 4) pocket at the bearing OD; M3 clearance Ø3.4 (ISO 273) feet
Catalog version: 2026-10-20

Sizes: see table below
- An upright 40 wide × 8 thick on a 40 × 24 × 3 foot, in three heights: 40, 60 and 80 mm.
- A Ø10 pocket through the 8 mm upright, centred 8 mm below the top, holds a 623 bearing (fit: press) for the Ø3 crankshaft: shaft height 32, 52 or 72 mm.
- Two Ø3.4 foot holes at (−15, 8) and (15, −8) take M3 screws to the base. A crank uses two stands, one each side.

file  height  shaft axis height  bearing pocket  foot
crank-stand-40  40  32  Ø10 × 8  40 × 24 × 3
crank-stand-60  60  52  Ø10 × 8  40 × 24 × 3
crank-stand-80  80  72  Ø10 × 8  40 × 24 × 3

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Stirling engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Stirling_engine
- Long Earth Society: Can engine build — video, web — LES site — https://longearthsociety.com/engineering/
- Long Earth Society: Engine builds (videos and write-ups) — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/can-engine-crank-stand/index.json
API: https://xemstudio.com/api/geometry?object=can-engine-crank-stand