2 in × 3 in spool with the bore finished Ø48.00 (bored and honed power cylinder) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-spool-bored-honed/  (CC BY 4.0)
Basis: Stock 2 in × 3 in spool (ISO 2852 faces, ASME BPE tube); the finished bore is a design value
Catalog version: 2026-10-20

Sizes: see table below
- A standard 2 in × 3 in spool sent out to be bored and honed through to Ø48.00. Stock tube is made to its OD and wall, so its bore can be anywhere from about 46.8 to 48.0 mm and is not round to a sliding standard; Ø48.00 cleans up every tube in tolerance and leaves about 1.4 mm of wall.
- The bore is a running fit for the Ø48.00 × 34 clearance-seal piston (no rings): the honed bore and the piston's ground OD together are the seal. Both performance engines use it with a 36 mm stroke.
- Honed surface: the whole bore face to face. The faces stay as made.

feature  value
faces  ISO 2852 2 in, 76.2 face to face
finished bore  Ø48.00 through, honed
piston  Ø48.00 × 34
stroke  36.0

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ISO (via iTeh sample): ISO 2852 clamp liners: face profile and flange / groove diameters — PDF — standard excerpt; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf
- ASME: BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall) — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment
- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/tri-clamp-spool-bored-honed/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-spool-bored-honed