Custom Tube adapter STL file ⌀ 36–31 mm (Length: 75 mm) 📦#7133

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Straight tubing adapter ⌀36 mm to ⌀31 mm in STL format. Length of this adapter is 75 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 30 mm. The ends are raw.
Generation date: 2026-02-07
3D Model Tube adapter STL file ⌀ 36–31 mm (Length: 75 mm)

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  • inline-tube-adapter-lenA40mm-d_model7133-nb0_dd{id}.stl : 2.2 Mo
STL Mesh quality : Linear deflection 0.05 Angular deflection 0.05
No compliance warranty No compliance warranty
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Values for this model

This model was generated by the Inline tube adapter template, with the following values:
Parameter Value
#1 side A length 40 mm (≃1 9/16 in)
#2 side A outer diameter 36 mm (≃1.42 in)
#3 side A thickness 3 mm (≃1/8 in)
#4 side B length 30 mm (≃1 3/16 in)
#5 side B outer diameter 31 mm (≃1.22 in)
#6 side B thickness 3 mm (≃1/8 in)
#7 transition length 5 mm (≃3/16 in)
#8 axis offset 0 mm (0 in)
#9 ends fillet no fillet
Metadata Value
inner diameter (side A) 30 mm (≃1 3/16 in)
inner diameter (side B) 25 mm (≃0.98 in)
total length 75 mm (≃2 15/16 in)
illustration of the parameters
Parameter overview

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 side A length lenA
#2 side A outer diameter diA
#3 side A thickness thA
#4 side B length lenB
#5 side B outer diameter diB
#6 side B thickness thB
#7 transition length tra
#8 axis offset ofs
#9 ends fillet fil

Related 3D models

To search for a model based on your own parameters, go to the template page Inline tube adapter 

Tubing adapter STL 3D file ⌀ 32–30 mm (Length: 75 mm) (📦 #7132)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 32–30 mm (Length: 75 mm)
Straight sleeve ⌀32 mm to ⌀30 mm in STL format. Total length of this sleeve is 75 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 30 mm. The ends have no fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 32 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 30 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 45–41 mm (Length: 80 mm) (📦 #5480)

1 object(s) - format STL
Tube adapter STL file ⌀ 45–41 mm (Length: 80 mm)
Inline tube coupler ⌀45 mm to ⌀41 mm in STL format. Total length of this junction is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 35 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 35 mm
side A outer diameter 45 mm
side A thickness 3 mm
side B length 35 mm
side B outer diameter 41 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 47–32 mm (Length: 90 mm) (📦 #4377)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 47–32 mm (Length: 90 mm)
Inline tube junction ⌀47 mm to ⌀32 mm in STL format. Final length of this sleeve is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 40 mm as well. The ends are raw.
Parameter Value Unit
side A length 40 mm
side A outer diameter 47 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 42–37 mm (Length: 70 mm) (📦 #8212)

1 object(s) - format STL
Tube adapter STL file ⌀ 42–37 mm (Length: 70 mm)
Tube junction ⌀42 mm to ⌀37 mm in STL 3D format. Total length of this connector is 70 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 42 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 37 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 42–41 mm (Length: 65 mm) (📦 #7710)

1 object(s) - format STL
Tubing adapter STL file ⌀ 42–41 mm (Length: 65 mm)
Inline sleeve ⌀42 mm to ⌀41 mm in STL 3D format. Total length of this reducer is 65 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 42 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 41 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 49–32 mm (Length: 90 mm) (📦 #4378)

1 object(s) - format STL
Tubing adapter STL file ⌀ 49–32 mm (Length: 90 mm)
Straight tube fitting ⌀49 mm to ⌀32 mm in STL 3D format. Length of this reducer is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 49 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 50–32 mm (Length: 90 mm) (📦 #4381)

1 object(s) - format STL
Tubing adapter STL file ⌀ 50–32 mm (Length: 90 mm)
Tubing adapter ⌀50 mm to ⌀32 mm in STL 3D format. Length of this reducer is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 50 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 51–32 mm (Length: 90 mm) (📦 #4605)

1 object(s) - format STL
Tube adapter STL file ⌀ 51–32 mm (Length: 90 mm)
Inline tubing adapter ⌀51 mm to ⌀32 mm in STL 3D format. Length of this junction is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 51 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 35–34 mm (Length: 55 mm) (📦 #8183)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 35–34 mm (Length: 55 mm)
Straight tube reducer ⌀35 mm to ⌀34 mm in STL 3D format. Total length of this fitting is 55 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 20 mm. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 34 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 50–40 mm (Length: 90 mm) (📦 #3871)

1 object(s) - format STL
Tube adapter STL file ⌀ 50–40 mm (Length: 90 mm)
Tube junction ⌀50 mm to ⌀40 mm in STL format. Final length of this coupler is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 40 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 50 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 40 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 45–40 mm (Length: 65 mm) (📦 #1942)

1 object(s) - format STL
Tube adapter STL file ⌀ 45–40 mm (Length: 65 mm)
Tube adapter ⌀45 mm to ⌀40 mm in STL format. Total length of this coupler is 65 mm. The thickness of the tubes is identical: 2.5 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 45 mm
side A thickness 2.5 mm
side B length 30 mm
side B outer diameter 40 mm
side B thickness 2.5 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 50–20 mm (Length: 80 mm) (📦 #8580)

1 object(s) - format STL
Tubing adapter STL file ⌀ 50–20 mm (Length: 80 mm)
Inline tube coupler ⌀50 mm to ⌀20 mm in STL 3D format. Length of this junction is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 50 mm, the smaller one of 20 mm. The ends are raw.
Parameter Value Unit
side A length 50 mm
side A outer diameter 50 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 20 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 40–32 mm (Length: 80 mm) (📦 #5043)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 40–32 mm (Length: 80 mm)
Inline tube junction ⌀40 mm to ⌀32 mm in STL format. Final length of this fitting is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 40 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 38–37 mm (Length: 80 mm) (📦 #7705)

1 object(s) - format STL
Tubing adapter STL file ⌀ 38–37 mm (Length: 80 mm)
Inline tube coupler ⌀38 mm to ⌀37 mm in STL 3D format. Final length of this coupler is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 38 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 37 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 46–38 mm (Length: 80 mm) (📦 #5044)

1 object(s) - format STL
Tubing adapter STL file ⌀ 46–38 mm (Length: 80 mm)
Inline fitting ⌀46 mm to ⌀38 mm in STL 3D format. Final length of this coupler is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 46 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 38 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 51–38 mm (Length: 100 mm) (📦 #10135)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 51–38 mm (Length: 100 mm)
Straight tubing adapter ⌀51 mm to ⌀38 mm in STL format. Total length of this adapter is 100 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends are raw.
Parameter Value Unit
side A length 40 mm
side A outer diameter 51 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 38 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 60–45 mm (Length: 75 mm) (📦 #1234)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 60–45 mm (Length: 75 mm)
Diameter adapter ⌀60 mm to ⌀45 mm in STL format. Final length of this sleeve is 75 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 60 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 45 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 38–32 mm (Length: 90 mm) (📦 #4840)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 38–32 mm (Length: 90 mm)
Straight tube coupler ⌀38 mm to ⌀32 mm in STL format. Final length of this junction is 90 mm. The thickness of the tubes is identical: 2.3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 30 mm. The ends are raw.
Parameter Value Unit
side A length 40 mm
side A outer diameter 38 mm
side A thickness 2.3 mm
side B length 30 mm
side B outer diameter 32 mm
side B thickness 2.3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 39–32 mm (Length: 90 mm) (📦 #4181)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 39–32 mm (Length: 90 mm)
Inline tubing adapter ⌀39 mm to ⌀32 mm in STL 3D format. Final length of this reducer is 90 mm. The thickness of the tubes is identical: 2.3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 30 mm. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 39 mm
side A thickness 2.3 mm
side B length 30 mm
side B outer diameter 32 mm
side B thickness 2.3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 20–16 mm (Length: 50 mm) (📦 #9848)

1 object(s) - format STL
Tube adapter STL file ⌀ 20–16 mm (Length: 50 mm)
Tube coupler ⌀20 mm to ⌀16 mm in STL format. Length of this sleeve is 50 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 20 mm. The ends are raw.
Parameter Value Unit
side A length 25 mm
side A outer diameter 20 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 16 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 35–31 mm (Length: 80 mm) (📦 #8143)

1 object(s) - format STL
Tubing adapter STL file ⌀ 35–31 mm (Length: 80 mm)
Tube fitting ⌀35 mm to ⌀31 mm in STL 3D format. Total length of this sleeve is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 30 mm. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 35 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 31 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 70–32 mm (Length: 62 mm) (📦 #6762)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 70–32 mm (Length: 62 mm)
Inline tube reducer ⌀70 mm to ⌀32 mm in STL format. Length of this sleeve is 62 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 32 mm, the smaller one of 20 mm. The ends are raw.
Parameter Value Unit
side A length 32 mm
side A outer diameter 70 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 39–38 mm (Length: 45 mm) (📦 #7706)

1 object(s) - format STL
Tube adapter STL file ⌀ 39–38 mm (Length: 45 mm)
Tube fitting ⌀39 mm to ⌀38 mm in STL 3D format. Final length of this coupler is 45 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 39 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 38 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 39–30 mm (Length: 80 mm) (📦 #6726)

1 object(s) - format STL
Tube adapter STL file ⌀ 39–30 mm (Length: 80 mm)
Inline tubing adapter ⌀39 mm to ⌀30 mm in STL format. Final length of this connector is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 35 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 35 mm
side A outer diameter 39 mm
side A thickness 2 mm
side B length 35 mm
side B outer diameter 30 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 42–41 mm (Length: 45 mm) (📦 #7709)

1 object(s) - format STL
Tube adapter STL file ⌀ 42–41 mm (Length: 45 mm)
Tube fitting ⌀42 mm to ⌀41 mm in STL 3D format. Total length of this coupler is 45 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends are raw.
Parameter Value Unit
side A length 20 mm
side A outer diameter 42 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 41 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 36–19 mm (Length: 60 mm) (📦 #9122)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 36–19 mm (Length: 60 mm)
Tubing adapter ⌀36 mm to ⌀19 mm in STL 3D format. Length of this sleeve is 60 mm. The larger-diameter tube has a thickness of 3 mm and a length of 25 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 25 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 25 mm
side A outer diameter 36 mm
side A thickness 3 mm
side B length 25 mm
side B outer diameter 19 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 38–19 mm (Length: 60 mm) (📦 #9123)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 38–19 mm (Length: 60 mm)
Tube adapter ⌀38 mm to ⌀19 mm in STL format. Length of this sleeve is 60 mm. The larger-diameter tube has a thickness of 3 mm and a length of 25 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 25 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 25 mm
side A outer diameter 38 mm
side A thickness 3 mm
side B length 25 mm
side B outer diameter 19 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet