Custom Tube adapter STL file ⌀ 51–35 mm (Length: 75 mm) 📦#1289

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Tube coupler ⌀51 mm to ⌀35 mm in STL format. Final length of this reducer is 75 mm. The larger-diameter tube has a thickness of 6 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 30 mm as well. The ends are rounded to ease the connection.
Generation date: 2025-07-29
3D Model Tube adapter STL file ⌀ 51–35 mm (Length: 75 mm)

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  • inline-tube-adapter-lenA30mm-d_model1289-nb0_dd{id}.stl : 7.9 Mo
STL Mesh quality : not defined
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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 30 mm (≃1 3/16 in)
#2 side A outer diameter 51 mm (≃2 in)
#3 side A thickness 6 mm (≃1/4 in)
#4 side B length 30 mm (≃1 3/16 in)
#5 side B outer diameter 35 mm (≃1 3/8 in)
#6 side B thickness 3 mm (≃1/8 in)
#7 transition length 15 mm (≃0.59 in)
#8 axis offset 0 mm (0 in)
#9 ends fillet fillet on both inside
and outside
Metadata Value
inner diameter (side A) 39 mm (≃1.54 in)
inner diameter (side B) 29 mm (≃1.14 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

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

Tube adapter STL file ⌀ 52–25 mm (Length: 105 mm) (📦 #2186)

1 object(s) - format STL
Tube adapter STL file ⌀ 52–25 mm (Length: 105 mm)
Tube junction ⌀52 mm to ⌀25 mm in STL 3D format. Final length of this junction is 105 mm. The larger-diameter tube has a thickness of 6 mm and a sleeve length of 40 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 50 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 40 mm
side A outer diameter 52 mm
side A thickness 6 mm
side B length 50 mm
side B outer diameter 25 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 50–30 mm (Length: 95 mm) (📦 #1314)

1 object(s) - format STL
Tube adapter STL file ⌀ 50–30 mm (Length: 95 mm)
Tube fitting ⌀50 mm to ⌀30 mm in STL format. Final length of this reducer is 95 mm. The larger-diameter tube has a thickness of 5 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 50 mm. The ends have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 50 mm
side A thickness 5 mm
side B length 50 mm
side B outer diameter 30 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 36–17 mm (Length: 55 mm) (📦 #9066)

1 object(s) - format STL
Tube adapter STL file ⌀ 36–17 mm (Length: 55 mm)
Inline fitting ⌀36 mm to ⌀17 mm in STL 3D format. Length of this adapter is 55 mm. The larger-diameter tube has a thickness of 5 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 4 mm and a length of 20 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 25 mm
side A outer diameter 36 mm
side A thickness 5 mm
side B length 20 mm
side B outer diameter 17 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 32–25 mm (Length: 89 mm) (📦 #9829)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 32–25 mm (Length: 89 mm)
Inline tube junction ⌀32 mm to ⌀25 mm in STL 3D format. Total length of this coupler is 89 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 24 mm, the smaller one of 50 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 24 mm
side A outer diameter 32 mm
side A thickness 5 mm
side B length 50 mm
side B outer diameter 25 mm
side B thickness 5 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 35–20 mm (Length: 84 mm) (📦 #9825)

1 object(s) - format STL
Tubing adapter STL file ⌀ 35–20 mm (Length: 84 mm)
Straight tube adapter ⌀35 mm to ⌀20 mm in STL 3D format. Final length of this coupler is 84 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 24 mm, the smaller one of 50 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 24 mm
side A outer diameter 35 mm
side A thickness 5 mm
side B length 50 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 40–37 mm (Length: 115 mm) (📦 #4476)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 40–37 mm (Length: 115 mm)
Tube adapter ⌀40 mm to ⌀37 mm in STL 3D format. Length of this connector is 115 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 40 mm. The ends are rounded to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 35 mm
side A outer diameter 40 mm
side A thickness 5 mm
side B length 40 mm
side B outer diameter 37 mm
side B thickness 5 mm
transition length 40 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 40–37 mm (Length: 118 mm) (📦 #4475)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 40–37 mm (Length: 118 mm)
Straight tube fitting ⌀40 mm to ⌀37 mm in STL format. Total length of this connector is 118 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 38 mm, the smaller one of 40 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 38 mm
side A outer diameter 40 mm
side A thickness 5 mm
side B length 40 mm
side B outer diameter 37 mm
side B thickness 5 mm
transition length 40 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 58–52 mm (Length: 100 mm) (📦 #3048)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 58–52 mm (Length: 100 mm)
Straight tubing adapter ⌀58 mm to ⌀52 mm in STL 3D format. Final length of this coupler is 100 mm. The larger-diameter tube has a thickness of 4 mm and a length of 45 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends are rounded on the inside to ease the connection.
Parameter Value Unit
side A length 45 mm
side A outer diameter 58 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 52 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 123–58 mm (Length: 70 mm) (📦 #2028)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 123–58 mm (Length: 70 mm)
Inline tube junction ⌀123 mm to ⌀58 mm in STL 3D format. Final length of this junction is 70 mm. The larger-diameter tube has a thickness of 5 mm and a length of 25 mm. The smaller-diameter tube has a thickness of 4 mm and a length of 25 mm as well. The ends feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 25 mm
side A outer diameter 123 mm
side A thickness 5 mm
side B length 25 mm
side B outer diameter 58 mm
side B thickness 4 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 51–35 mm (Length: 80 mm) (📦 #1290)

1 object(s) - format STL
Tube adapter STL file ⌀ 51–35 mm (Length: 80 mm)
Tube reducer ⌀51 mm to ⌀35 mm in STL 3D format. Length of this adapter 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 have a fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 51 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 56–35 mm (Length: 80 mm) (📦 #6630)

1 object(s) - format STL
Tube adapter STL file ⌀ 56–35 mm (Length: 80 mm)
Tubing adapter ⌀56 mm to ⌀35 mm in STL 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 30 mm, the smaller one of 30 mm as well. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 56 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 57–37 mm (Length: 80 mm) (📦 #6650)

1 object(s) - format STL
Tubing adapter STL file ⌀ 57–37 mm (Length: 80 mm)
Inline tube coupler ⌀57 mm to ⌀37 mm in STL format. Length of this reducer 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 have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 57 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 fillet on bo...

Tubing adapter STL 3D file ⌀ 100–60 mm (Length: 100 mm) (📦 #4746)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 100–60 mm (Length: 100 mm)
Straight tube adapter ⌀100 mm to ⌀60 mm in STL format. Length of this fitting is 100 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 40 mm as well. The ends feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 40 mm
side A outer diameter 100 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 60 mm
side B thickness 4 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm) (📦 #7384)

1 object(s) - format STL
Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm)
Straight tubing adapter ⌀52 mm to ⌀24 mm in STL 3D format. Total length of this fitting is 40 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 10 mm. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 52 mm
side A thickness 4 mm
side B length 10 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 34–20 mm (Length: 40 mm) (📦 #9093)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 34–20 mm (Length: 40 mm)
Straight tube adapter ⌀34 mm to ⌀20 mm in STL 3D format. Length of this adapter is 40 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm. The ends have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 34 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 67–50 mm (Length: 80 mm) (📦 #3297)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 67–50 mm (Length: 80 mm)
Inline sleeve ⌀67 mm to ⌀50 mm in STL 3D format. Length of this fitting 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 feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 30 mm
side A outer diameter 67 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 50 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 70–34 mm (Length: 80 mm) (📦 #4413)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 70–34 mm (Length: 80 mm)
Tubing adapter ⌀70 mm to ⌀34 mm in STL 3D format. Total length of this sleeve 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 axes of the tubes are off-center by 3 mm. The ends feature a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 70 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 34 mm
side B thickness 3 mm
transition length 20 mm
axis offset 3 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 42–21 mm (Length: 60 mm) (📦 #8507)

1 object(s) - format STL
Tubing adapter STL file ⌀ 42–21 mm (Length: 60 mm)
Tube reducer ⌀42 mm to ⌀21 mm in STL 3D format. Length of this junction is 60 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 20 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 42 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 21 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 47–43 mm (Length: 75 mm) (📦 #8154)

1 object(s) - format STL
Tubing adapter STL file ⌀ 47–43 mm (Length: 75 mm)
Straight tubing adapter ⌀47 mm to ⌀43 mm in STL 3D format. Total 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 40 mm. The ends are rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 47 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 43 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 39–35 mm (Length: 60 mm) (📦 #4018)

1 object(s) - format STL
Tube adapter STL file ⌀ 39–35 mm (Length: 60 mm)
Straight tubing adapter ⌀39 mm to ⌀35 mm in STL format. Total length of this reducer is 60 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 a fillet to facilitate the connection of the two tubes.
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 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 38–31 mm (Length: 50 mm) (📦 #8960)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 38–31 mm (Length: 50 mm)
Inline tube junction ⌀38 mm to ⌀31 mm in STL 3D format. Final length of this adapter is 50 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 22 mm, the smaller one of 20 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 22 mm
side A outer diameter 38 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 31 mm
side B thickness 3 mm
transition length 8 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 35–30 mm (Length: 55 mm) (📦 #2189)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–30 mm (Length: 55 mm)
Inline tube junction ⌀35 mm to ⌀30 mm in STL format. Total length of this adapter is 55 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 feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 20 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 30 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 36–20 mm (Length: 35 mm) (📦 #9087)

1 object(s) - format STL
Tubing adapter STL file ⌀ 36–20 mm (Length: 35 mm)
Straight tube reducer ⌀36 mm to ⌀20 mm in STL 3D format. Final length of this coupler is 35 mm. The larger-diameter tube has a thickness of 4 mm and a length of 15 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm as well. The ends feature a fillet to ease the connection.
Parameter Value Unit
side A length 15 mm
side A outer diameter 36 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm) (📦 #2197)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm)
Inline tube reducer ⌀35 mm to ⌀29 mm in STL 3D format. Final length of this junction is 55 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 feature a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 29 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 69–48 mm (Length: 90 mm) (📦 #4806)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 69–48 mm (Length: 90 mm)
Diameter adapter ⌀69 mm to ⌀48 mm in STL format. Length of this junction is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 40 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 69 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 48 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 35–34 mm (Length: 100 mm) (📦 #2033)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–34 mm (Length: 100 mm)
Tube reducer ⌀35 mm to ⌀34 mm in STL 3D format. Final 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 feature a fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 34 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 32–20 mm (Length: 35 mm) (📦 #9086)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–20 mm (Length: 35 mm)
Inline tube junction ⌀32 mm to ⌀20 mm in STL 3D format. Final length of this sleeve is 35 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 15 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm as well. The ends feature a fillet to ease the connection.
Parameter Value Unit
side A length 15 mm
side A outer diameter 32 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 63–41 mm (Length: 78 mm) (📦 #9453)

1 object(s) - format STL
Tube adapter STL file ⌀ 63–41 mm (Length: 78 mm)
Inline tube junction ⌀63 mm to ⌀41 mm in STL format. Total length of this reducer is 78 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 18 mm. The ends have a fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 63 mm
side A thickness 3 mm
side B length 18 mm
side B outer diameter 41 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...