Axial-flux stator plates: Ø90 9-coil and Ø70 6-coil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/axial-flux-stator/  (CC BY 4.0)
Basis: Coreless 3-phase stator: coils = 3/4 of poles (12 pole / 9 coil, 8 pole / 6 coil), Ø13 pockets for the bobbin flanges, M3 holes at ISO 273 clearance
Catalog version: 2026-10-20

Sizes: see table below
- The Ø90 stator is a 4 mm plate with 9 Ø13 through pockets on a Ø72 circle, a Ø14 centre hole the Ø8 shaft passes without contact, and 3 × Ø3.4 (M3) mounting holes on a Ø86 circle.
- The Ø70 stator has 6 Ø13 pockets on a Ø52 circle, the same Ø14 centre hole and 3 × Ø3.4 holes on a Ø66 circle.
- The pockets take the Ø13 flanges of the coil bobbin (slide).
- Wire 3-phase by series groups: on 9 coils 1-4-7, 2-5-8, 3-6-9; on 6 coils 1-4, 2-5, 3-6; rectify with a 3-phase bridge.

stator  plate_mm  coils  coil_circle_mm  centre_hole_mm  mount_holes
stator-90-9coil  Ø90 × 4  9  72  14  3 × Ø3.4 on Ø86
stator-70-6coil  Ø70 × 4  6  52  14  3 × Ø3.4 on Ø66

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Axial flux motor — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Axial_flux_motor
- Wikipedia: Alternator — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Alternator
- Hugh Piggott: A Wind Turbine Recipe Book (axial-flux alternator design) — web, PDF — Author's site [verify license at link] — http://scoraigwind.co.uk/
- Long Earth Society: Engine and rig 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/axial-flux-stator/index.json
API: https://xemstudio.com/api/geometry?object=axial-flux-stator