2 in × 152.4 mm closed-end hot spool, bore finished Ø48.00 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-closed-hot-spool-bored/  (CC BY 4.0)
Basis: ISO 2852 face and ASME BPE 2 in tube as the ferrule and spools on this site; the closed end and the finished bore are design values
Catalog version: 2026-10-20

Sizes: see table below
- A fabrication spec: a standard 2 in ferrule end, 16 ga tube and a 3 mm closed end welded into one piece, 152.4 mm (6 in) from the face to the outer end, 1.5 mm outer round on the end. Plain outside: the fin sleeve and the water jacket are separate parts that slide or clamp on. Nothing that seals is near the flame; the only joint is the clamp face.
- After the end is closed, the bore is finished Ø48.00 from the face to the floor (149.4 deep). That size cleans up any 2 in tube within its OD and wall tolerances, and the slotted liner's fin tips are a press fit in it.
- Inside, from the face: the liner's cold ring and ports, the cooler zone (z 9–54, under the water jacket), the regenerator (54–94), the heater zone (94–144, under the fin sleeve) and the hot space at the floor.
- I use it on both performance engines: lying down in the horizontal gamma and standing in the charged beta.

feature  value
face  ISO 2852 2 in
face to outer end  152.39999999999998
closed end  3, 1.5 outer round
finished bore  Ø48.00 × 149.4

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-closed-hot-spool-bored/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-closed-hot-spool-bored