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Clamp-in bearing plate: 2 in, two ISO 2852 faces, spigot with two 623 seats

How do I carry a crankshaft inside a sealed tri-clamp vessel without a shaft seal? · Hardware · basis: ISO 2852 face and 20° back (as the ferrule and the flat end cap) on both sides, ASME BPE tube OD for the neck; 16 mm face to face so two standard 2 in clamps (15.97 wide each) sit side by side over 1.7 mm gaskets; 623 bearing 3 × 10 × 4 (ISO 15)

Long Earth Society build part. The plates that carry my sealed generator's crankshaft without letting it out. The engines

Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features

sizes
8 in table

Notes

  • A plate clamped between two faces like a thick gasket: each side is an ISO 2852 face (land Ø56.5–Ø64, 2.85 rim, 1.6 recess inside Ø56.5) with the 20° back down to the tube OD, the two joined by a Ø50.8 neck. Each side takes its own Type B gasket and clamp; the two clamps sit 1.74 mm apart.
  • Inside: a Ø16 spigot runs 52.1 mm inward from the inner face with a 623 seat at its end; a second 623 seat sits 3.1–7.1 mm inside the inner face; a Ø4 bore joins them, clear of the Ø3 shaft. The shaft never leaves the vessel: the plate's outer face holds a Ø44 pocket for a Ø42 pocket flywheel on the shaft end, and a flat end cap clamps over it.
  • Four Ø4 vents join the pocket to the crankcase, so the pocket is crankcase gas too. The sealed generator uses two, one in each branch of the cross.
  • Fits: the faces are clamp faces; the seats press on the 623 outer rings; the Ø4 and Ø12 bores are clearance (designed).

Sizes

featurevalue
facesISO 2852 both sides, 2 in
face to face16.0
neckØ50.8
spigotØ16 × 52.1 from the inner face
bearing seats2 × Ø10 × 4 (623)
shaft boreØ4 (no contact)
flywheel pocketØ44 × 6.2, Ø12 hub bore
vents4 × Ø4 on Ø34

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.

featureexactmates withfitfiles
facesISO 2852 both sides (land Ø56.5–Ø64, rim 2.85, 1.6 recess, 20° back to Ø50.8)standard clamps + Type B gasketsclampall
bearing seats2 × Ø10 × 4 (spigot end; 3.1–7.1 inside the inner face)623 outer ringpressall
shaft boreØ4Ø3 crankshaft (no contact)designedall
hub bore and flywheel pocketØ12; Ø44 × 6.2pocket-flywheel hub Ø10 and disc Ø42 (1 mm radial, 1 mm behind)designedall
spigotØ16inside the 2 in branch bore (no contact)designedall

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

ISO (via iTeh sample)ISO 2852 clamp liners: face profile and flange / groove diametersPDFstandard excerpt; dimensions are facts
ASMEBPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall)standardASME; dimensions are facts verify
Long Earth SocietyEngine buildsweb, videoLES site

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

bearing-plate-2in-623clamp-in bearing plate: ISO 2852 face (land Ø56.5–Ø64, rim 2.85, recess 1.6) and 20° back on both sides, Ø50.8 neck, 16 face to face; Ø16 spigot 52.1 inward with a 623 seat at its end, 623 seat 3.1–7.1 inside the inner face, Ø4 bore between; Ø12 bore and Ø44 × 6.2 flywheel pocket in the outer face; 4 × Ø4 ventsSTEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-clamp-in-bearing-plate

Clamp-in bearing plate: 2 in, two ISO 2852 faces, spigot with two 623 seats, isometric render of a generated part
Render of bearing-plate-2in-623 from the free STEP; not to scale.

How it fits

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Questions

Will two clamps fit on one plate?

Yes: each 2 in clamp reaches 7.98 mm from its joint plane, the joint planes are 17.7 mm apart (16 + 1.7), so 1.74 mm is left between the clamps.

Where are the bearings?

One 623 at the spigot end, 52.1 mm in from the inner face, one 3.1 mm inside the inner face; the crank sits between the two plates' spigots.