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Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀25 mm to 40×40 mm, thickness 3 mm 📦#3952

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Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀25 mm and a rectangular section with internal dimensions 40×40 mm. The wall thickness is 3 mm and the total length is 200 mm.
Generation date: 2025-11-28
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀25 mm to 40×40 mm, thickness 3 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model3952-nb0_dd{id}.stl : 832.4 Ko
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 25 mm (≃0.98 in)
#2 cylinder inlet length 100 mm (≃3 15/16 in)
#3 rectangle internal length 40 mm (≃1 9/16 in)
#4 rectangle internal height 40 mm (≃1 9/16 in)
#5 rectangle inlet length 50 mm (≃1.97 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 3 mm (≃1/8 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 19 mm (≃3/4 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 76 mm
rectangle internal length 113 mm
rectangle internal height 72 mm
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 200×40 mm, thickness 3 mm (📦 #1682)

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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 64.4 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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Parameter Value Unit
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Parameter Value Unit
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Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀80 mm and a rectangular section with inner dimensions 105×50 mm. The wall thickness is 2 mm and the total length is 150 mm.
Parameter Value Unit
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Parameter Value Unit
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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 ⌀85 mm to 105×50 mm, thickness 2 mm (📦 #1654)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀85 mm to 105×50 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀85 mm and a rectangular section with internal dimensions 105×50 mm. The shell thickness is 2 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 85 mm
cylinder inlet length 50 mm
rectangle internal length 105 mm
rectangle internal height 50 mm
rectangle inlet length 46 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 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
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Round-to-Rectangular Tube Adapter STL 3D file ⌀85 mm to 105×50 mm, thickness 2 mm + offset (📦 #1656)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀85 mm to 105×50 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀85 mm and a rectangular section with internal dimensions 105×50 mm. The shell thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 15 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 85 mm
cylinder inlet length 50 mm
rectangle internal length 105 mm
rectangle internal height 50 mm
rectangle inlet length 46 mm
offset Z 15 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀85 mm to 105×50 mm, thickness 2 mm + offset (📦 #1655)

1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 85 mm
cylinder inlet length 50 mm
rectangle internal length 105 mm
rectangle internal height 50 mm
rectangle inlet length 46 mm
offset Z 23 mm
offset Y 0 mm
total length 150 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
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 70×90 mm, thickness 2 mm + offset (📦 #2046)

1 object(s) - format STL
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
rectangle internal length 70 mm
rectangle internal height 90 mm
rectangle inlet length 90 mm
offset Z 5 mm
offset Y 5 mm
total length 160 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 160×25 mm, thickness 3 mm + offset (📦 #2256)

1 object(s) - format STL
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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
rectangle internal length 160 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 ⌀100 mm to 150×50 mm, thickness 2 mm (📦 #1616)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 150×50 mm, thickness 2 mm
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 applied 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 40 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀25 mm to 29×19 mm, thickness 2 mm (📦 #2932)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀25 mm to 29×19 mm, thickness 2 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀25 mm and a rectangular section with inner dimensions 29×19 mm. The wall thickness is 2 mm and the overall length is 80 mm.
Parameter Value Unit
cylinder outer diameter 25 mm
cylinder inlet length 50 mm
rectangle internal length 29 mm
rectangle internal height 19 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 2 mm
chamfer no chamfer