Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm 📦#1861

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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.
Generation date: 2025-09-18
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀31 mm to 70×90 mm, thickness 2 mm

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Free
  • round-to-rectangular-adapter-d_model1861-nb0_dd{id}.stl : 1.7 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 31 mm (≃1.22 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 70 mm (≃2 3/4 in)
#4 rectangle internal height 90 mm (≃3.54 in)
#5 rectangle inlet length 100 mm (≃3 15/16 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 200 mm (≃7 7/8 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 27 mm (≃1 1/16 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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Parameter Value Unit
cylinder outer diameter 67 mm
cylinder inlet length 30 mm
rectangle internal length 30 mm
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rectangle inlet length 100 mm
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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 file ⌀70 mm to 70×90 mm, thickness 2 mm + offset (📦 #2046)

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Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 70×90 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀70 mm and a rectangular section with internal dimensions 70×90 mm. The shell thickness is 2 mm and the total length is 160 mm. The adapter has an offset of 5 mm along the Y axis and 5 mm along the Z axis. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 70 mm
cylinder inlet length 50 mm
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Parameter Value Unit
cylinder outer diameter 41.5 mm
cylinder inlet length 45 mm
rectangle internal length 45 mm
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Parameter Value Unit
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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
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Parameter Value Unit
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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.
Parameter Value Unit
cylinder outer diameter 80 mm
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1 object(s) - format STL
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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
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1 object(s) - format STL
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Parameter Value Unit
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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
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Round-to-Rectangular Tube Adapter STL 3D file ⌀25 mm to 125×25 mm, thickness 2 mm (📦 #2366)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀25 mm to 125×25 mm, thickness 2 mm
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀25 mm and a rectangular section with internal dimensions 125×25 mm. The wall thickness is 2 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 25 mm
cylinder inlet length 50 mm
rectangle internal length 125 mm
rectangle internal height 25 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀45 mm to 150×120 mm, thickness 2 mm + offset (📦 #1940)

1 object(s) - format STL
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Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀45 mm and a rectangular section with internal dimensions 150×120 mm. The wall thickness is 2 mm and the total length is 130 mm. The adapter has an offset of 15 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 45 mm
cylinder inlet length 25 mm
rectangle internal length 150 mm
rectangle internal height 120 mm
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1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 50 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
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offset Y 0 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 150×50 mm, thickness 2 mm (📦 #1615)

1 object(s) - format STL (5.0/5) 1 vote(s)
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File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 150×50 mm. The wall thickness is 2 mm and the overall length is 150 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 150 mm
rectangle internal height 50 mm
rectangle inlet length 80 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 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
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 100×30 mm, thickness 3 mm (📦 #4773)

1 object(s) - format STL
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Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀70 mm and a rectangular section with inner dimensions 100×30 mm. The shell thickness is 3 mm and the total length is 150 mm. A chamfer is applied on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 70 mm
cylinder inlet length 15 mm
rectangle internal length 100 mm
rectangle internal height 30 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀58 mm to 62×82 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀58 mm and a rectangular section with inner dimensions 62×82 mm. The wall thickness is 2 mm and the total length is 100 mm. A chamfer is present on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 58 mm
cylinder inlet length 30 mm
rectangle internal length 62 mm
rectangle internal height 82 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀20 mm to 135×135 mm, thickness 2 mm (📦 #1857)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀20 mm to 135×135 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀20 mm and a rectangular section with internal dimensions 135×135 mm. The shell thickness is 2 mm and the overall length is 120 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 20 mm
cylinder inlet length 50 mm
rectangle internal length 135 mm
rectangle internal height 135 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 2 mm
chamfer chamfers on ...