Crank stands with a 625 pocket, 40 and 60 mm axis height — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/crank-stands-625/  (CC BY 4.0)
Basis: Upright with a Ø16 × 5 pocket at the 625 OD; slotted foot for M3 at 42 mm
Catalog version: 2026-10-20

Sizes: see table below
- A 30 wide × 8 thick upright with a rounded top (R15) on a 50 × 24 × 3 foot. Shaft axis 40 or 60 mm above the foot's underside; overall 55 or 75 tall.
- A Ø16 × 5 pocket (625 OD) on one face at the axis, and a Ø11.2 clearance hole through so the Ø5 shaft passes without contact.
- Two slots 3.4 × 10 in the foot, 42 mm apart, for M3 into the gamma base plate slots. Two stands carry one shaft.

file  axis height  overall height  pocket  clearance hole  foot
crank-stand-625-h40  40  55  Ø16 × 5  Ø11.2  50 × 24 × 3, slots 3.4 at 42
crank-stand-625-h60  60  75  Ø16 × 5  Ø11.2  50 × 24 × 3, slots 3.4 at 42

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Long Earth Society: Tri-clamp Stirling engine builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/crank-stands-625/index.json
API: https://xemstudio.com/api/geometry?object=crank-stands-625