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

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Diameter adapter ⌀51 mm to ⌀35 mm in STL format. Length of this coupler is 75 mm. The thickness of the larger diameter tube is 6 mm, and the smaller one is 3 mm. The ends are rounded to make tube connection easier.
Generation date: 2025-07-29
3D Model Tube adapter ⌀ 51–35 mm (Length: 75 mm)

3D model download

Free
  • inline-tube-adapter-lenA30mm-d_model1289-nb0_dd{id}.stl : 7.9 Mo
STL Mesh quality : not defined
(attribution - commercial use allowed)

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
#2 side A outer diameter 51 mm
#3 side A thickness 6 mm
#4 side B length 30 mm
#5 side B outer diameter 35 mm
#6 side B thickness 3 mm
#7 transition length 15 mm
#8 axis offset 0 mm
#9 ends fillet fillet on both inside
and outside
illustration of the parameters
Representation of the parameters

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 

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

1 object(s) - format STL
Inline tube junction ⌀50 mm to ⌀30 mm in STL format. Total length of this reducer is 95 mm. The thickness of the larger diameter tube is 5 mm, and the smaller one is 3 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length30mm
side A outer diameter50mm
side A thickness5mm
side B length50mm
side B outer diameter30mm
side B thickness3mm
transition length15mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 80–50 mm (Length: 120 mm) (📦 #1146)

1 object(s) - format STL
Tube reducer ⌀80 mm to ⌀50 mm in STL format. Total length of this adapter is 120 mm. The thickness of the tubes is identical: 5 mm. The two axes of the tubes are off-center. The ends are rounded.
Parameter Value Unit
side A length50mm
side A outer diameter80mm
side A thickness5mm
side B length40mm
side B outer diameter50mm
side B thickness5mm
transition length30mm
axis offset14.9mm
ends fillet3

Tube adapter ⌀ 50–40 mm (Length: 45 mm ) (📦 #1094)

1 object(s) - format STL (5.0/5) 3 vote(s)
Inline tube junction ⌀50 to ⌀40 mm in STL format. Length of this connector is 45 mm. The thickness of the larger diameter tube is 4 mm, and the smaller one is 3 mm. The ends have a fillet on the outside to make tube connection easier.
Parameter Value Unit
side A length20mm
side A outer diameter50mm
side A thickness4mm
side B length20mm
side B outer diameter40mm
side B thickness3mm
transition length5mm
axis offset0mm
ends fillet1

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

1 object(s) - format STL
Tube reducer ⌀51 mm to ⌀35 mm in STL format. Final length of this adapter is 80 mm. The thickness of the tubes is identical: 3 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length30mm
side A outer diameter51mm
side A thickness3mm
side B length30mm
side B outer diameter35mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 80–35 mm (Length: 90 mm) (📦 #1764)

1 object(s) - format STL
Inline fitting ⌀80 mm to ⌀35 mm in STL format. Length of this junction is 90 mm. The thickness of the tubes is identical: 3 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length40mm
side A outer diameter80mm
side A thickness3mm
side B length30mm
side B outer diameter35mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 115–105 mm (Length: 120 mm) (📦 #1805)

1 object(s) - format STL
Straight tube adapter ⌀115 mm to ⌀105 mm in STL format. Final length of this adapter is 120 mm. The thickness of the tubes is identical: 5 mm. The axes of the tubes are offset. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length50mm
side A outer diameter115mm
side A thickness5mm
side B length50mm
side B outer diameter105mm
side B thickness5mm
transition length20mm
axis offset4.9mm
ends fillet3

Tube adapter ⌀ 25–20 mm (Length: 45 mm) (📦 #1101)

1 object(s) - format STL
Tube reducer ⌀25 mm to ⌀20 mm in STL format. Length of this reducer is 45 mm. The thickness of the tubes is identical: 3 mm. The ends are rounded on the inside to make tube connection easier.
Parameter Value Unit
side A length15mm
side A outer diameter25mm
side A thickness3mm
side B length15mm
side B outer diameter20mm
side B thickness3mm
transition length15mm
axis offset0mm
ends fillet2

Tube adapter ⌀ 60–40 mm (Length: 85 mm) (📦 #1123)

1 object(s) - format STL
Straight sleeve ⌀60 mm to ⌀40 mm in STL format. Total length of this reducer is 85 mm. The thickness of the tubes is identical: 3 mm. The axes of the tubes are offset. The ends feature an external fillet to make tube connection easier.
Parameter Value Unit
side A length40mm
side A outer diameter60mm
side A thickness3mm
side B length40mm
side B outer diameter40mm
side B thickness3mm
transition length5mm
axis offset1mm
ends fillet1

Tube adapter ⌀ 120–90 mm (Length: 75 mm) (📦 #1164)

1 object(s) - format STL
Inline tube coupler ⌀120 mm to ⌀90 mm in STL format. Final length of this connector is 75 mm. The thickness of the larger diameter tube is 4 mm, and the smaller one is 3 mm. The ends have a fillet on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length25mm
side A outer diameter120mm
side A thickness4mm
side B length30mm
side B outer diameter90mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 64–49 mm (Length: 65 mm) (📦 #1230)

1 object(s) - format STL
Inline tube adapter ⌀64 mm to ⌀49 mm in STL format. Final length of this coupler is 65 mm. The thickness of the larger diameter tube is 4 mm, and the smaller one is 3 mm. The ends are raw.
Parameter Value Unit
side A length25mm
side A outer diameter64mm
side A thickness4mm
side B length25mm
side B outer diameter49mm
side B thickness3mm
transition length15mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 64–49 mm (Length: 63 mm) (📦 #1229)

1 object(s) - format STL
Tube reducer ⌀64 mm to ⌀49 mm in STL format. Final length of this fitting is 63 mm. The thickness of the tubes is identical: 4 mm. The ends are not rounded.
Parameter Value Unit
side A length25mm
side A outer diameter64mm
side A thickness4mm
side B length25mm
side B outer diameter49mm
side B thickness4mm
transition length13mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 68–52 mm (Length: 65 mm) (📦 #1231)

1 object(s) - format STL
Tube adapter ⌀68 mm to ⌀52 mm in STL format. Length of this coupler is 65 mm. The thickness of the tubes is identical: 4 mm. The ends are not rounded.
Parameter Value Unit
side A length25mm
side A outer diameter68mm
side A thickness4mm
side B length25mm
side B outer diameter52mm
side B thickness4mm
transition length15mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 68–53 mm (Length: 65 mm) (📦 #1233)

1 object(s) - format STL
Inline tube adapter ⌀68 mm to ⌀53 mm in STL format. Final length of this reducer is 65 mm. The thickness of the tubes is identical: 4 mm. The ends have no fillet.
Parameter Value Unit
side A length25mm
side A outer diameter68mm
side A thickness4mm
side B length25mm
side B outer diameter53mm
side B thickness4mm
transition length15mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 60–45 mm (Length: 100 mm) (📦 #1228)

1 object(s) - format STL
Straight tube coupler ⌀60 mm to ⌀45 mm in STL format. Total length of this connector is 100 mm. The thickness of the tubes is identical: 4 mm. The ends have no fillet.
Parameter Value Unit
side A length50mm
side A outer diameter60mm
side A thickness4mm
side B length30mm
side B outer diameter45mm
side B thickness4mm
transition length20mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 88–25 mm (Length: 63 mm) (📦 #1823)

1 object(s) - format STL
Tube fitting ⌀88 mm to ⌀25 mm in STL format. Total length of this fitting is 63 mm. The thickness of the tubes is identical: 4 mm. The ends are not rounded.
Parameter Value Unit
side A length25mm
side A outer diameter88mm
side A thickness4mm
side B length25mm
side B outer diameter25mm
side B thickness4mm
transition length13mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 33–19 mm (Length: 56 mm) (📦 #1338)

1 object(s) - format STL
Tube junction ⌀33 mm to ⌀19 mm in STL format. Total length of this fitting is 56 mm. The thickness of the tubes is identical: 4 mm. The two axes of the tubes are offset. The ends have no fillet.
Parameter Value Unit
side A length19mm
side A outer diameter33mm
side A thickness4mm
side B length10mm
side B outer diameter19mm
side B thickness4mm
transition length27mm
axis offset6.1mm
ends fillet0

Tube adapter ⌀ 80–70 mm (Length: 65 mm) (📦 #1263)

1 object(s) - format STL (5.0/5) 1 vote(s)
Inline tube adapter ⌀80 mm to ⌀70 mm in STL format. Final length of this reducer is 65 mm. The thickness of the tubes is identical: 4 mm. The ends are not rounded.
Parameter Value Unit
side A length30mm
side A outer diameter80mm
side A thickness4mm
side B length25mm
side B outer diameter70mm
side B thickness4mm
transition length10mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 80–75 mm (Length: 111 mm) (📦 #1214)

1 object(s) - format STL
Tube connector ⌀80 mm to ⌀75 mm in STL format. Final length of this adapter is 111 mm. The thickness of the tubes is identical: 3 mm. The ends are rounded on the outside to make tube connection easier.
Parameter Value Unit
side A length46mm
side A outer diameter80mm
side A thickness3mm
side B length45mm
side B outer diameter75mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 50–40 mm (Length: 50 mm) (📦 #1124)

1 object(s) - format STL
Straight tube coupler ⌀50 mm to ⌀40 mm in STL format. Length of this reducer is 50 mm. The thickness of the tubes is identical: 2 mm. The ends have a fillet.
Parameter Value Unit
side A length20mm
side A outer diameter50mm
side A thickness2mm
side B length20mm
side B outer diameter40mm
side B thickness2mm
transition length10mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 50–40 mm (Length: 100 mm) (📦 #1125)

1 object(s) - format STL (4.0/5) 1 vote(s)
Diameter adapter ⌀50 mm to ⌀40 mm in STL format. Final length of this fitting is 100 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded to facilitate the connection of the two tubes.
Parameter Value Unit
side A length40mm
side A outer diameter50mm
side A thickness2mm
side B length40mm
side B outer diameter40mm
side B thickness2mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 135–100 mm (Length: 140 mm) (📦 #1463)

1 object(s) - format STL
Straight tube fitting ⌀135 mm to ⌀100 mm in STL format. Final length of this coupler is 140 mm. The thickness of the tubes is identical: 5 mm. The ends feature an external fillet to ease the connection.
Parameter Value Unit
side A length50mm
side A outer diameter135mm
side A thickness5mm
side B length50mm
side B outer diameter100mm
side B thickness5mm
transition length40mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 111–90 mm (Length: 170 mm) (📦 #1550)

1 object(s) - format STL
Tube adapter ⌀111 mm to ⌀90 mm in STL format. Total length of this sleeve is 170 mm. The thickness of the tubes is identical: 5 mm. The ends are rounded on the outside to ease the connection.
Parameter Value Unit
side A length70mm
side A outer diameter111mm
side A thickness5mm
side B length80mm
side B outer diameter90mm
side B thickness5mm
transition length20mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 86–81 mm (Length: 111 mm) (📦 #1215)

1 object(s) - format STL (5.0/5) 1 vote(s)
Inline tube junction ⌀86 mm to ⌀81 mm in STL format. Final length of this adapter is 111 mm. The thickness of the tubes is identical: 3 mm. The ends are rounded on the outside to ease the connection.
Parameter Value Unit
side A length46mm
side A outer diameter86mm
side A thickness3mm
side B length45mm
side B outer diameter81mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 110–40 mm (Length: 215 mm) (📦 #1693)

1 object(s) - format STL
Straight sleeve ⌀110 mm to ⌀40 mm in STL format. Length of this sleeve is 215 mm. The thickness of the tubes is identical: 5 mm. The ends are rounded to make tube connection easier.
Parameter Value Unit
side A length100mm
side A outer diameter110mm
side A thickness5mm
side B length100mm
side B outer diameter40mm
side B thickness5mm
transition length15mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 100–50 mm (Length: 140 mm) (📦 #1449)

1 object(s) - format STL
Inline tube reducer ⌀100 mm to ⌀50 mm in STL format. Final length of this junction is 140 mm. The thickness of the larger diameter tube is 4 mm, and the smaller one is 5 mm. The axes of the tubes are off-center. The ends are rounded to make tube connection easier.
Parameter Value Unit
side A length40mm
side A outer diameter100mm
side A thickness4mm
side B length40mm
side B outer diameter50mm
side B thickness5mm
transition length60mm
axis offset25.4mm
ends fillet3

Tube adapter ⌀ 100–80 mm (Length: 63 mm) (📦 #1830)

1 object(s) - format STL
Tube junction ⌀100 mm to ⌀80 mm in STL format. Length of this connector is 63 mm. The thickness of the tubes is identical: 4 mm. The ends have no fillet.
Parameter Value Unit
side A length25mm
side A outer diameter100mm
side A thickness4mm
side B length25mm
side B outer diameter80mm
side B thickness4mm
transition length13mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 81–55 mm (Length: 80 mm) (📦 #1440)

1 object(s) - format STL
Diameter adapter ⌀81 mm to ⌀55 mm in STL format. Final length of this adapter is 80 mm. The thickness of the tubes is identical: 2.5 mm. The ends feature an external fillet.
Parameter Value Unit
side A length25mm
side A outer diameter81mm
side A thickness2.5mm
side B length25mm
side B outer diameter55mm
side B thickness2.5mm
transition length30mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 38–10 mm (Length: 90 mm) (📦 #1269)

1 object(s) - format STL
Tube connector ⌀38 mm to ⌀10 mm in STL format. Final length of this fitting is 90 mm. The thickness of the larger diameter tube is 2.5 mm, and the smaller one is 2 mm. The ends are rounded on the outside.
Parameter Value Unit
side A length30mm
side A outer diameter38mm
side A thickness2.5mm
side B length30mm
side B outer diameter10mm
side B thickness2mm
transition length30mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 16–12 mm (Length: 35 mm) (📦 #1097)

1 object(s) - format STL
Inline fitting ⌀16 mm to ⌀12 mm in STL format. Final length of this fitting is 35 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length15mm
side A outer diameter16mm
side A thickness2mm
side B length15mm
side B outer diameter12mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet3