Custom Round-to-Rectangular Tube Adapter STL file ⌀26 mm to 24×23 mm, thickness 4 mm 📦#7001

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Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀26 mm and a rectangular section with inner dimensions 24×23 mm. The wall thickness is 4 mm and the total length is 136 mm.
Generation date: 2026-02-01
3D Model Round-to-Rectangular Tube Adapter STL file ⌀26 mm to 24×23 mm, thickness 4 mm

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  • round-to-rectangular-adapter-d_model7001-nb0_dd{id}.stl : 632.8 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 26 mm (≃1.02 in)
#2 cylinder inlet length 7 mm (≃0.28 in)
#3 rectangle internal length 24 mm (≃15/16 in)
#4 rectangle internal height 23 mm (≃0.91 in)
#5 rectangle inlet length 98 mm (≃3.86 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 136 mm (≃5.35 in)
#9 thickness 4 mm (≃0.16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 18 mm (≃0.71 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 22 mm
cylinder inlet length 7 mm
rectangle internal length 24 mm
rectangle internal height 22 mm
rectangle inlet length 98 mm
offset Z 0 mm
offset Y 0 mm
total length 136 mm
thickness 4 mm
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Round-to-Rectangular Tube Adapter STL file ⌀20 mm to 23.5×15.5 mm, thickness 4 mm (📦 #6980)

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Parameter Value Unit
cylinder outer diameter 20 mm
cylinder inlet length 5 mm
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rectangle inlet length 97 mm
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Round-to-Rectangular Tube Adapter STL file ⌀21 mm to 23×23 mm, thickness 3 mm (📦 #6983)

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Round-to-Rectangular Tube Adapter STL file ⌀21 mm to 23×23 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 21 mm
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rectangle internal length 23 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 40×40 mm, thickness 5 mm (📦 #8250)

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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 88 mm
cylinder inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 22 mm
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Round-to-Rectangular Tube Adapter STL file ⌀70 mm to 100×30 mm, thickness 3 mm (📦 #4773)

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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
cylinder outer diameter 20 mm
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Round-to-Rectangular Tube Adapter STL file ⌀126 mm to 30×63.5 mm, thickness 3 mm (📦 #5405)

1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 126 mm
cylinder inlet length 30 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀48.5 mm to 80×80 mm, thickness 3 mm
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Parameter Value Unit
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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
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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 ⌀75 mm to 84×80 mm, thickness 2 mm (📦 #7627)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀75 mm to 84×80 mm, thickness 2 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 84×80 mm. The wall thickness is 2 mm and the total length is 145 mm.
Parameter Value Unit
cylinder outer diameter 75 mm
cylinder inlet length 25 mm
rectangle internal length 84 mm
rectangle internal height 80 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 145 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 37×16 mm, thickness 2 mm (📦 #8237)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 37×16 mm, thickness 2 mm
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀20 mm and a rectangular section with inner dimensions 37×16 mm. The shell thickness is 2 mm and the total length is 110 mm.
Parameter Value Unit
cylinder outer diameter 20 mm
cylinder inlet length 30 mm
rectangle internal length 37 mm
rectangle internal height 16 mm
rectangle inlet length 60 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 100×51 mm, thickness 4 mm + offset (📦 #6896)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 100×51 mm, thickness 4 mm + offset
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀78 mm and a rectangular section with inner dimensions 100×51 mm. The shell thickness is 4 mm and the total length is 120 mm. The adapter has an offset of 13 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 78 mm
cylinder inlet length 15 mm
rectangle internal length 100 mm
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rectangle inlet length 71 mm
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Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 60×30 mm, thickness 3 mm (📦 #1474)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀80 mm to 60×30 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀80 mm and a rectangular section with internal dimensions 60×30 mm. The wall thickness is 3 mm and the overall length is 90 mm.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 30 mm
rectangle internal length 60 mm
rectangle internal height 30 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 104.5×50.8 mm, thickness 4 mm + offset (📦 #6897)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 104.5×50.8 mm, thickness 4 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀78 mm and a rectangular section with internal dimensions 104.5×50.8 mm. The wall thickness is 4 mm and the total length is 120 mm. The adapter has an offset of 13 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 78 mm
cylinder inlet length 15 mm
rectangle internal length 104.5 mm
rectangle internal height 50.8 mm
rectangle inlet length 71 mm
offset Z 13 mm
offset Y 0 mm
total length 120 mm
thickness 4 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀126 mm to 30×63.5 mm, thickness 3 mm + offset (📦 #2122)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀126 mm to 30×63.5 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀126 mm and a rectangular section with internal dimensions 30×63.5 mm. The wall thickness is 3 mm and the total length is 150 mm. The adapter has an offset of 3 mm along the Y axis and 20.0 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 126 mm
cylinder inlet length 30 mm
rectangle internal length 30 mm
rectangle internal height 63.5 mm
rectangle inlet length 80 mm
offset Z 20.0 mm
offset Y 3 mm
total length 150 mm
thickness 3 mm
chamfer no chamfer