Custom Round-to-Rectangular Tube Adapter STL file ⌀139.7 mm to 57.1×203.2 mm, thickness 2 mm + offset 📦#10478

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Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀139.7 mm and a rectangular section with internal dimensions 57.1×203.2 mm. The wall thickness is 2 mm and the total length is 225.1 mm. The adapter has an offset of 13.5 mm along the Y axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Generation date: 2026-07-28
3D Model Round-to-Rectangular Tube Adapter STL file ⌀139.7 mm to 57.1×203.2 mm, thickness 2 mm + offset

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Free
  • round-to-rectangular-adapter-d_model10478-nb0_dd{id}.stl : 5.1 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 139.7 mm (5 1/2 in)
#2 cylinder inlet length 99 mm (≃3.90 in)
#3 rectangle internal length 57.1 mm (≃2 1/4 in)
#4 rectangle internal height 203.2 mm (8 in)
#5 rectangle inlet length 99 mm (≃3.90 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 13.5 mm (≃0.53 in)
#8 total length 225.1 mm (≃8 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 135.7 mm (≃5.34 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 139.7 mm
cylinder inlet length 99 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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Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀200 mm and a rectangular section with inner dimensions 100×80 mm. The shell thickness is 2 mm and the overall length is 250 mm. The adapter has an offset of 30 mm along the Y axis and 30 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 100 mm
rectangle internal length 100 mm
rectangle internal height 80 mm
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offset Y 30 mm
total length 250 mm
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1 object(s) - format STL
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Parameter Value Unit
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cylinder inlet length 80 mm
rectangle internal length 240 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 120×120 mm, thickness 3 mm + offset (📦 #1799)

1 object(s) - format STL
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Parameter Value Unit
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Parameter Value Unit
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cylinder inlet length 60 mm
rectangle internal length 60 mm
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1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 70 mm
rectangle internal length 165 mm
rectangle internal height 97.5 mm
rectangle inlet length 70 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 240×100 mm, thickness 3 mm (📦 #7974)

1 object(s) - format STL
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Parameter Value Unit
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rectangle internal length 240 mm
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thickness 3 mm
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1 object(s) - format STL
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Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 106×55 mm. The shell thickness is 3 mm and the total length is 200 mm.
Parameter Value Unit
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cylinder inlet length 75 mm
rectangle internal length 106 mm
rectangle internal height 55 mm
rectangle inlet length 75 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀76 mm to 160×78 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀76 mm and a rectangular section with inner dimensions 160×78 mm. The wall thickness is 3 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 76 mm
rectangle internal length 160 mm
rectangle internal height 78 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀40 mm to 30×30 mm, thickness 2 mm (📦 #4689)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀40 mm to 30×30 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀40 mm and a rectangular section with inner dimensions 30×30 mm. The shell thickness is 2 mm and the overall length is 300 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 40 mm
cylinder inlet length 100 mm
rectangle internal length 30 mm
rectangle internal height 30 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 300 mm
thickness 2 mm
chamfer chamfer on t...