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Printable tri-clamp (45°): concentric and eccentric reducers, ½ to 4 in

Can I 3D print a tri-clamp reducer? · Hardware · basis: Xem Studio design: standard 31-14MP / 32-14MP lengths per pair, 45° rims

Exact dimensions. True size, with no printing tolerance added.

sizes
13 in table

Notes

  • Print large face down.
  • Printable tri-clamp: the ISO 2852 face and gasket groove are exactly standard, only the back cone behind each rim is 45° instead of 20°, so no rim overhangs more than 45° from vertical in any print orientation. Join these with the 45° clamps (printable-tri-clamp-clamps) and standard Type B gaskets; a 45° clamp fits only 45° rims, so keep a run all 45°. A 45° cone turns clamp force into face force at 1 : 1 (a 20° cone at 2.7 : 1), so tighten the clamp bolts harder or use M6.
  • Print orientation: straight parts face down; elbows, tees and crosses with one face down; horizontal bores bridge their top, so keep them small or add a light tree support inside.
  • Every clamp face is the ISO 2852 profile used across this site: 2.85 mm rim, flat face with the gasket groove (K 1.6 deep, R3 1.2 bottom, 23° walls, P2 0.8 edges) on C2, 20° back cone. Flange C3 / groove C2 / tube OD × wall, mm: ½–¾ in 25.0 / 20.4 (derived) / 12.7–19.05 × 1.65; 1–1½ in 50.5 / 43.5 / 25.4–38.1 × 1.65; 2 in 64.0 / 56.5 / 50.8 × 1.65; 2½ in 77.5 / 70.5 / 63.5 × 1.65; 3 in 91.0 / 83.5 / 76.2 × 1.65; 4 in 119.0 / 110.0 / 101.6 × 2.11; 6 in 166.9 (6.570 in) / 156.5 / 152.4 × 2.77; 8 in 217.7 (8.570 in) / 207.0 / 203.2 × 2.77; 10 in 268.5 / 261.0 / 254.0 × 3.40; 12 in 319.3 / 311.8 / 304.8 × 3.40.

Sizes

size_inface_to_face_mm
¾ × ½50.8
1 × ¾50.8
1½ × 176.2
2 × 1127.0
2 × 1½76.2
2½ × 1½127.0
2½ × 276.2
3 × 1½177.8
3 × 2127.0
3 × 2½76.2
4 × 2231.8
4 × 2½181.0
4 × 3130.2

Where the files are

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

GW KentTri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thicknesswebpublisher's guide; dimensions cited
Rubber FabTri-Clamp gasket dimensional chart: gasket ID, OD and bead diameter per size (2 in bead 2.22 in / 56.50 mm, 1.5 in 1.71 / 43.50, 3 in 3.29 / 83.50)PDFmaker chart; dimensions are facts verify

Free files

★ Free files 26 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

reducer-concentric-45cone-0.75x0.5in¾ × ½ in concentric reducer, 2.0 inSTEP · STL
reducer-eccentric-45cone-0.75x0.5in¾ × ½ in eccentric reducer, 2.0 inSTEP · STL
reducer-concentric-45cone-1x0.75in1 × ¾ in concentric reducer, 2.0 inSTEP · STL
reducer-eccentric-45cone-1x0.75in1 × ¾ in eccentric reducer, 2.0 inSTEP · STL
reducer-concentric-45cone-1.5x1in1½ × 1 in concentric reducer, 3.0 inSTEP · STL
reducer-eccentric-45cone-1.5x1in1½ × 1 in eccentric reducer, 3.0 inSTEP · STL
reducer-concentric-45cone-2x1in2 × 1 in concentric reducer, 5.0 inSTEP · STL
reducer-eccentric-45cone-2x1in2 × 1 in eccentric reducer, 5.0 inSTEP · STL
reducer-concentric-45cone-2x1.5in2 × 1½ in concentric reducer, 3.0 inSTEP · STL
reducer-eccentric-45cone-2x1.5in2 × 1½ in eccentric reducer, 3.0 inSTEP · STL
reducer-concentric-45cone-2.5x1.5in2½ × 1½ in concentric reducer, 5.0 inSTEP · STL
reducer-eccentric-45cone-2.5x1.5in2½ × 1½ in eccentric reducer, 5.0 inSTEP · STL
reducer-concentric-45cone-2.5x2in2½ × 2 in concentric reducer, 3.0 inSTEP · STL
reducer-eccentric-45cone-2.5x2in2½ × 2 in eccentric reducer, 3.0 inSTEP · STL
reducer-concentric-45cone-3x1.5in3 × 1½ in concentric reducer, 7.0 inSTEP · STL
reducer-eccentric-45cone-3x1.5in3 × 1½ in eccentric reducer, 7.0 inSTEP · STL
reducer-concentric-45cone-3x2in3 × 2 in concentric reducer, 5.0 inSTEP · STL
reducer-eccentric-45cone-3x2in3 × 2 in eccentric reducer, 5.0 inSTEP · STL
reducer-concentric-45cone-3x2.5in3 × 2½ in concentric reducer, 3.0 inSTEP · STL
reducer-eccentric-45cone-3x2.5in3 × 2½ in eccentric reducer, 3.0 inSTEP · STL
reducer-concentric-45cone-4x2in4 × 2 in concentric reducer, 9.125 inSTEP · STL
reducer-eccentric-45cone-4x2in4 × 2 in eccentric reducer, 9.125 inSTEP · STL
reducer-concentric-45cone-4x2.5in4 × 2½ in concentric reducer, 7.125 inSTEP · STL
reducer-eccentric-45cone-4x2.5in4 × 2½ in eccentric reducer, 7.125 inSTEP · STL
reducer-concentric-45cone-4x3in4 × 3 in concentric reducer, 5.125 inSTEP · STL
reducer-eccentric-45cone-4x3in4 × 3 in eccentric reducer, 5.125 inSTEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=printable-tri-clamp-reducers

Printable tri-clamp (45°): concentric and eccentric reducers, ½ to 4 in, isometric render of a generated part
Render of reducer-eccentric-45cone-2.5x2in from the free STEP; not to scale.

Fits with

Printable tri-clamp (45°): ferrules, spools and caps, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): ferrules, spools and caps, ½ to 4 in8 sizes★ 46 files
Printable tri-clamp (45°): two-bolt clamps, ½ to 8 in, isometric render of a generated part
Printable tri-clamp (45°): two-bolt clamps, ½ to 8 in8 sizes★ 8 files
Printable tri-clamp (45°): 90° and 45° elbows, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): 90° and 45° elbows, ½ to 4 in8 sizes★ 16 files
Printable tri-clamp (45°): tees, short-outlet tees and crosses, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): tees, short-outlet tees and crosses, ½ to 4 in8 sizes★ 22 files
Printable tri-clamp (45°): NPT male, NPT female and hose-barb adapters, isometric render of a generated part
Printable tri-clamp (45°): NPT male, NPT female and hose-barb adapters28 sizes★ 28 files
Printable tri-clamp (45°): dome lids and ported caps, isometric render of a generated part
Printable tri-clamp (45°): dome lids and ported caps6 sizes★ 16 files

Questions

Which end down?

The large face.