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2 in end cap with a bored boss for two 8 × 12 × 20 sleeve bushings (piston-rod gland)

How do I take a piston rod out of a charged tri-clamp cylinder? · Hardware · basis: ISO 2852 2 in face; bushing size from its standard; boss length is a design value

Long Earth Society build part. The piston-rod gland of my horizontal gamma. 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
3 in table

Notes

  • A 2 in end cap with a bored boss: two 8 × 12 × 20 sleeve bushings 36 mm apart guide the Ø8 piston rod and are its gland. The rod's side load from the con-rod is taken here, so the piston in the bore carries none.

Sizes

featurevalue
faceISO 2852 2 in
bossØ24, to 62 from the face
seatØ12, z 6–62

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
faceISO 2852 2 inType B gasket, 2 in clampclampall
gland seatØ12, z 6–62two 8 × 12 × 20 sleeve bushingspressgland-cap-2in-2x-8x12x20*
gland seatØ10, z 6–62two 6 × 10 × 10 sleeve bushingspressgland-cap-2in-2x-6x10x10*
port bosses3 × 1/4-18 NPT on r 17, tap drill Ø11.1 × 12fill valve, gauge, relief valvedesignedgland-cap-2in-2x-6x10x10*

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

gland-cap-2in-2x-8x12x202 in rod-gland cap: ISO 2852 face, body Ø50.8 to 12, boss Ø24 to 62, Ø12 seat z 6–62 for two 8 × 12 × 20 bushings (6–26, 42–62), Ø9 belowSTEP · STL
gland-cap-2in-2x-6x10x10-3x-npt142 in rod-gland cap for a Ø6 rod: ISO 2852 face, body Ø50.8 to 12, boss Ø22 to 62, Ø10 seat z 6–62 for two 6 × 10 × 10 bushings (6–16, 52–62), three 1/4 NPT bosses on its back on r 17STEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-rod-gland-cap

2 in end cap with a bored boss for two 8 × 12 × 20 sleeve bushings (piston-rod gland), isometric render of a generated part
Render of gland-cap-2in-2x-6x10x10-3x-npt14 from the free STEP; not to scale.

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Questions

Does it leak?

A close-running gland always leaks a little: at 5 bar gauge about 10.1 mL/min at 5 µm radial clearance, 81 mL/min at 10 µm (at the gland's pressure).