Custom Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset 📦#2896

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Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀21.9 mm and a rectangular section with internal dimensions 80×80 mm. The wall thickness is 2 mm and the total length is 90 mm. The adapter has an offset of 7.5 mm along the Y axis and 7.5 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.
Generation date: 2025-10-30
3D Model Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model2896-nb0_dd{id}.stl : 3.5 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 21.9 mm (≃7/8 in)
#2 cylinder inlet length 30 mm (≃1 3/16 in)
#3 rectangle internal length 80 mm (≃3.15 in)
#4 rectangle internal height 80 mm (≃3.15 in)
#5 rectangle inlet length 35 mm (≃1 3/8 in)
#6 offset Z 7.5 mm (≃0.30 in)
#7 offset Y 7.5 mm (≃0.30 in)
#8 total length 90 mm (≃3.54 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 17.9 mm (≃0.70 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 34 mm
cylinder inlet length 20 mm
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Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 33 mm
cylinder inlet length 29 mm
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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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1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 75 mm
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1 object(s) - format STL
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Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀20.3 mm and a rectangular section with internal dimensions 20×10 mm. The wall thickness is 2 mm and the total length is 75 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
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1 object(s) - format STL
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Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀34 mm and a rectangular section with inner dimensions 47×13 mm. The shell thickness is 2 mm and the overall length is 70 mm. The adapter has an offset of 5 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 34 mm
cylinder inlet length 14 mm
rectangle internal length 47 mm
rectangle internal height 13 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 65×65 mm, thickness 2 mm (📦 #2974)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 65×65 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀60 mm and a rectangular section with inner dimensions 65×65 mm. The shell thickness is 2 mm and the overall length is 64 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 60 mm
cylinder inlet length 30 mm
rectangle internal length 65 mm
rectangle internal height 65 mm
rectangle inlet length 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀75 mm to 99×101 mm, thickness 2 mm (📦 #1847)

1 object(s) - format STL
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Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀75 mm and a rectangular section with inner dimensions 99×101 mm. The wall thickness is 2 mm and the total length is 65 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 75 mm
cylinder inlet length 25 mm
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Parameter Value Unit
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1 object(s) - format STL
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Parameter Value Unit
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cylinder inlet length 14 mm
rectangle internal length 47 mm
rectangle internal height 13 mm
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Round-to-Rectangular Tube Adapter STL file ⌀30 mm to 84.9×35 mm, thickness 3 mm (📦 #6214)

1 object(s) - format STL
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Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀30 mm and a rectangular section with inner dimensions 84.9×35 mm. The shell thickness is 3 mm and the total length is 100 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 30 mm
cylinder inlet length 25 mm
rectangle internal length 84.9 mm
rectangle internal height 35 mm
rectangle inlet length 25 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀34 mm to 80×80 mm, thickness 2 mm + offset (📦 #4392)

1 object(s) - format STL
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Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀34 mm and a rectangular section with inner dimensions 80×80 mm. The wall thickness is 2 mm and the overall length is 50 mm. The adapter has an offset of 15 mm along the Y axis and 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 34 mm
cylinder inlet length 10 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 10 mm
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offset Y 15 mm
total length 50 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀35 mm to 84.9×35 mm, thickness 3 mm (📦 #6212)

1 object(s) - format STL
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File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀35 mm and a rectangular section with inner dimensions 84.9×35 mm. The wall thickness is 3 mm and the overall length is 100 mm. 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 35 mm
cylinder inlet length 25 mm
rectangle internal length 84.9 mm
rectangle internal height 35 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀30 mm to 82.3×32.7 mm, thickness 3 mm (📦 #6218)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀30 mm to 82.3×32.7 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀30 mm and a rectangular section with inner dimensions 82.3×32.7 mm. The shell thickness is 3 mm and the overall length is 100 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 30 mm
cylinder inlet length 25 mm
rectangle internal length 82.3 mm
rectangle internal height 32.7 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀83 mm to 79×40 mm, thickness 2 mm (📦 #9212)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀83 mm to 79×40 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀83 mm and a rectangular section with internal dimensions 79×40 mm. The shell thickness is 2 mm and the overall length is 80 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 83 mm
cylinder inlet length 35 mm
rectangle internal length 79 mm
rectangle internal height 40 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 62×82 mm, thickness 2 mm (📦 #2599)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 62×82 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀78 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 applied on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 78 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...