Custom Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 150×30 mm, thickness 3 mm + offset 📦#7778

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Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀80 mm and a rectangular section with internal dimensions 150×30 mm. The wall thickness is 3 mm and the overall length is 260 mm. The adapter has an offset of 20 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Generation date: 2026-03-13
3D Model Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 150×30 mm, thickness 3 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model7778-nb0_dd{id}.stl : 1.2 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Round to rectangular adapter template, with the following values:
Parameter Value
#1 cylinder outer diameter 80 mm (≃3.15 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 150 mm (≃5.91 in)
#4 rectangle internal height 30 mm (≃1 3/16 in)
#5 rectangle inlet length 100 mm (≃3 15/16 in)
#6 offset Z 20 mm (≃0.79 in)
#7 offset Y 0 mm (0 in)
#8 total length 260 mm (≃10 1/4 in)
#9 thickness 3 mm (≃1/8 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 74 mm (≃2.91 in)
illustration of the parameters
Parameter overview

  • If the chamfer option on the ends is enabled, the chamfer length is equal to half the thickness.
  • The stop at the bottom of the rectangular section has a width equal to half the thickness.

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

Parameter Label
#1 cylinder outer diameter diaC
#2 cylinder inlet length lentC
#3 rectangle internal length lenIR
#4 rectangle internal height heiIR
#5 rectangle inlet length lentR
#6 offset Z ofsZ
#7 offset Y ofsY
#8 total length lenT
#9 thickness thi
#10 chamfer cha

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

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Parameter Value Unit
cylinder outer diameter 132 mm
cylinder inlet length 50 mm
rectangle internal length 114 mm
rectangle internal height 58 mm
rectangle inlet length 99 mm
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Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 180×30 mm, thickness 3 mm + offset (📦 #2002)

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Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 80 mm
rectangle internal length 180 mm
rectangle internal height 30 mm
rectangle inlet length 100 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀128 mm to 114×58 mm, thickness 3 mm (📦 #2416)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀128 mm to 114×58 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 128 mm
cylinder inlet length 50 mm
rectangle internal length 114 mm
rectangle internal height 58 mm
rectangle inlet length 99 mm
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Round-to-Rectangular Tube Adapter STL file ⌀42 mm to 120×40 mm, thickness 2 mm + offset (📦 #1864)

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Round-to-Rectangular Tube Adapter STL file ⌀42 mm to 120×40 mm, thickness 2 mm + offset
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Parameter Value Unit
cylinder outer diameter 42 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 40 mm
rectangle inlet length 100 mm
offset Z 25 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀44 mm to 60×10 mm, thickness 3 mm (📦 #7414)

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Parameter Value Unit
cylinder outer diameter 44 mm
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rectangle internal height 10 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀91 mm to 250×50 mm, thickness 3 mm + offset (📦 #6033)

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Parameter Value Unit
cylinder outer diameter 91 mm
cylinder inlet length 60 mm
rectangle internal length 250 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm + offset (📦 #9653)

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Parameter Value Unit
cylinder outer diameter 150 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 220×60 mm, thickness 3 mm (📦 #1923)

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Parameter Value Unit
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cylinder inlet length 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀79 mm to 250×14 mm, thickness 2 mm + offset (📦 #8660)

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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀41.5 mm to 45×5 mm, thickness 2 mm + offset (📦 #7432)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀41.5 mm to 45×5 mm, thickness 2 mm + offset
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀41.5 mm and a rectangular section with inner dimensions 45×5 mm. The shell thickness is 2 mm and the overall length is 300 mm. The adapter has an offset of 1 mm along the Y axis and 1 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
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cylinder inlet length 45 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀122 mm to 220×90 mm, thickness 3 mm (📦 #2157)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀122 mm to 220×90 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀122 mm and a rectangular section with inner dimensions 220×90 mm. The wall thickness is 3 mm and the total length is 250 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
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chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 200×120 mm, thickness 2 mm (📦 #1982)

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3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀110 mm and a rectangular section with internal dimensions 200×120 mm. The shell thickness is 2 mm and the overall length is 260 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 50 mm
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thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 160×25 mm, thickness 3 mm + offset (📦 #2256)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 160×25 mm, thickness 3 mm + offset
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀76 mm and a rectangular section with internal dimensions 160×25 mm. The shell thickness is 3 mm and the total length is 221.4 mm. The adapter has an offset of 10.7 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀76 mm to 294×14 mm, thickness 2 mm + offset (📦 #8650)

1 object(s) - format STL
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Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀76 mm and a rectangular section with internal dimensions 294×14 mm. The wall thickness is 2 mm and the overall length is 300 mm. The adapter has an offset of 10.2 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀70 mm to 100×30 mm, thickness 3 mm (📦 #4774)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀70 mm to 100×30 mm, thickness 3 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀70 mm and a rectangular section with inner dimensions 100×30 mm. The wall thickness is 3 mm and the overall length is 155 mm. A chamfer is applied on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 70 mm
cylinder inlet length 25 mm
rectangle internal length 100 mm
rectangle internal height 30 mm
rectangle inlet length 100 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×40 mm, thickness 3 mm + offset (📦 #7431)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 200×40 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 200×40 mm. The shell thickness is 3 mm and the overall length is 150 mm. The adapter has an offset of 3 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 25 mm
rectangle internal length 200 mm
rectangle internal height 40 mm
rectangle inlet length 80 mm
offset Z 3 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀75 mm to 120×25 mm, thickness 3 mm (📦 #1984)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀75 mm to 120×25 mm, thickness 3 mm
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀75 mm and a rectangular section with internal dimensions 120×25 mm. The shell thickness is 3 mm and the total length is 150 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 75 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 25 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀76 mm to 160×60 mm, thickness 3 mm + offset (📦 #2257)

1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 50 mm
rectangle internal length 160 mm
rectangle internal height 60 mm
rectangle inlet length 100 mm
offset Z 25 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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1 object(s) - format STL
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Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀99.7 mm and a rectangular section with internal dimensions 152.5×52.5 mm. The wall thickness is 2 mm and the overall length is 225 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 99.7 mm
cylinder inlet length 35 mm
rectangle internal length 152.5 mm
rectangle internal height 52.5 mm
rectangle inlet length 55 mm
offset Z 0 mm
offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm (📦 #1861)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀31 mm and a rectangular section with inner dimensions 70×90 mm. The wall thickness is 2 mm and the overall length is 200 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 31 mm
cylinder inlet length 50 mm
rectangle internal length 70 mm
rectangle internal height 90 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀152.4 mm to 220×20 mm, thickness 3 mm (📦 #4928)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀152.4 mm to 220×20 mm, thickness 3 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀152.4 mm and a rectangular section with internal dimensions 220×20 mm. The shell thickness is 3 mm and the overall length is 250 mm. A chamfer is applied on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 152.4 mm
cylinder inlet length 35 mm
rectangle internal length 220 mm
rectangle internal height 20 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀66 mm to 70×25 mm, thickness 3 mm + offset (📦 #2475)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀66 mm to 70×25 mm, thickness 3 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀66 mm and a rectangular section with internal dimensions 70×25 mm. The shell thickness is 3 mm and the total length is 221.4 mm. The adapter has an offset of 10.7 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 66 mm
cylinder inlet length 50 mm
rectangle internal length 70 mm
rectangle internal height 25 mm
rectangle inlet length 100 mm
offset Z 10.7 mm
offset Y 0 mm
total length 221.4 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀154.4 mm to 220×20 mm, thickness 3 mm (📦 #4930)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀154.4 mm to 220×20 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀154.4 mm and a rectangular section with inner dimensions 220×20 mm. The shell thickness is 3 mm and the overall length is 250 mm. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 154.4 mm
cylinder inlet length 35 mm
rectangle internal length 220 mm
rectangle internal height 20 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀124 mm to 110×55 mm, thickness 2 mm (📦 #6752)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀124 mm to 110×55 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀124 mm and a rectangular section with internal dimensions 110×55 mm. The shell thickness is 2 mm and the overall length is 200 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 124 mm
cylinder inlet length 50 mm
rectangle internal length 110 mm
rectangle internal height 55 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 60×5 mm, thickness 3 mm (📦 #9116)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 60×5 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀50 mm and a rectangular section with inner dimensions 60×5 mm. The shell thickness is 3 mm and the overall length is 180 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 60 mm
rectangle internal length 60 mm
rectangle internal height 5 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 180 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×25 mm, thickness 2 mm + offset (📦 #2094)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×25 mm, thickness 2 mm + offset
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 200×25 mm. The shell thickness is 2 mm and the overall length is 147 mm. The adapter has an offset of 13.5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 200 mm
rectangle internal height 25 mm
rectangle inlet length 100 mm
offset Z 13.5 mm
offset Y 0 mm
total length 147 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀98 mm to 200×44 mm, thickness 3 mm + offset (📦 #3868)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀98 mm to 200×44 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀98 mm and a rectangular section with inner dimensions 200×44 mm. The wall thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 50 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 98 mm
cylinder inlet length 30 mm
rectangle internal length 200 mm
rectangle internal height 44 mm
rectangle inlet length 60 mm
offset Z 50 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...