Custom Round-to-Rectangular Tube Adapter STL file ⌀103 mm to 50×50 mm, thickness 3 mm + offset 📦#2955

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3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀103 mm and a rectangular section with internal dimensions 50×50 mm. The wall thickness is 3 mm and the total length is 85 mm. The adapter has an offset of 20 mm along the Z axis. A chamfer is present on the outside of the cylindrical end to ease insertion.
Generation date: 2025-11-01
3D Model Round-to-Rectangular Tube Adapter STL file ⌀103 mm to 50×50 mm, thickness 3 mm + offset

3D model download

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  • round-to-rectangular-adapter-d_model2955-nb0_dd{id}.stl : 2.2 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 103 mm (≃4 1/16 in)
#2 cylinder inlet length 15 mm (≃0.59 in)
#3 rectangle internal length 50 mm (≃1.97 in)
#4 rectangle internal height 50 mm (≃1.97 in)
#5 rectangle inlet length 30 mm (≃1 3/16 in)
#6 offset Z 20 mm (≃0.79 in)
#7 offset Y 0 mm (0 in)
#8 total length 85 mm (≃3.35 in)
#9 thickness 3 mm (≃1/8 in)
#10 chamfer chamfer on the outside
of the cylindrical tube
Metadata Value
Cylinder internal diameter 97 mm (≃3 13/16 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

Related 3D models

To search for a model based on your own parameters, go to the template page Round to rectangular adapter 

Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀96 mm and a rectangular section with internal dimensions 67×58 mm. The shell thickness is 3 mm and the overall length is 70 mm.
Parameter Value Unit
cylinder outer diameter 96 mm
cylinder inlet length 18 mm
rectangle internal length 67 mm
rectangle internal height 58 mm
rectangle inlet length 32 mm
offset Z 0 mm
offset Y 0 mm
total length 70 mm
thickness 3 mm
chamfer no chamfer
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 100×50 mm. The shell thickness is 3 mm and the total length is 100 mm. The adapter has an offset of 3 mm along the Y axis and 3 mm along the Z axis. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 30 mm
rectangle internal length 100 mm
rectangle internal height 50 mm
rectangle inlet length 30 mm
offset Z 3 mm
offset Y 3 mm
total length 100 mm
thickness 3 mm
chamfer chamfer on t...
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 100×50 mm. The shell thickness is 3 mm and the total length is 100 mm. The adapter has an offset of 3 mm along the Y axis and 3 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 100 mm
rectangle internal height 50 mm
rectangle inlet length 20 mm
offset Z 3 mm
offset Y 3 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀119 mm and a rectangular section with inner dimensions 114×79 mm. The shell thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 2 mm along the Y axis and 17.5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 119 mm
cylinder inlet length 30 mm
rectangle internal length 114 mm
rectangle internal height 79 mm
rectangle inlet length 30 mm
offset Z 17.5 mm
offset Y 2 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀90 mm and a rectangular section with inner dimensions 60×60 mm. The wall thickness is 3 mm and the overall length is 60 mm.
Parameter Value Unit
cylinder outer diameter 90 mm
cylinder inlet length 20 mm
rectangle internal length 60 mm
rectangle internal height 60 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 3 mm
chamfer no chamfer
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 80×80 mm. The shell thickness is 3 mm and the overall length is 65 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 15 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 65 mm
thickness 3 mm
chamfer no chamfer
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀108 mm and a rectangular section with internal dimensions 25×76 mm. The shell thickness is 3 mm and the total length is 78 mm.
Parameter Value Unit
cylinder outer diameter 108 mm
cylinder inlet length 26 mm
rectangle internal length 25 mm
rectangle internal height 76 mm
rectangle inlet length 26 mm
offset Z 0 mm
offset Y 0 mm
total length 78 mm
thickness 3 mm
chamfer no chamfer
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀80 mm and a rectangular section with internal dimensions 80×80 mm. The wall thickness is 3 mm and the total length is 50 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 15 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer chamfer on t...
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀106 mm and a rectangular section with internal dimensions 50×50 mm. The wall thickness is 3 mm and the overall length is 100 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 50 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfer on t...
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀125 mm and a rectangular section with internal dimensions 60×60 mm. The wall thickness is 3 mm and the total length is 120 mm.
Parameter Value Unit
cylinder outer diameter 125 mm
cylinder inlet length 20 mm
rectangle internal length 60 mm
rectangle internal height 60 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 3 mm
chamfer no chamfer
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀119 mm and a rectangular section with inner dimensions 114×79 mm. The shell thickness is 3 mm and the total length is 100 mm. The adapter has an offset of 3 mm along the Y axis and 10.5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 119 mm
cylinder inlet length 30 mm
rectangle internal length 114 mm
rectangle internal height 79 mm
rectangle inlet length 30 mm
offset Z 10.5 mm
offset Y 3 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀96 mm and a rectangular section with inner dimensions 70×61 mm. The shell thickness is 3 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 96 mm
cylinder inlet length 18 mm
rectangle internal length 70 mm
rectangle internal height 61 mm
rectangle inlet length 12 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer no chamfer
3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀65 mm and a rectangular section with inner dimensions 56×70 mm. The shell thickness is 3 mm and the total length is 75 mm.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 20 mm
rectangle internal length 56 mm
rectangle internal height 70 mm
rectangle inlet length 35 mm
offset Z 0 mm
offset Y 0 mm
total length 75 mm
thickness 3 mm
chamfer no chamfer
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀99 mm and a rectangular section with internal dimensions 77×70 mm. The shell thickness is 3 mm and the total length is 50 mm.
Parameter Value Unit
cylinder outer diameter 99 mm
cylinder inlet length 18 mm
rectangle internal length 77 mm
rectangle internal height 70 mm
rectangle inlet length 12 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer no chamfer
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
chamfer no chamfer
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀81 mm and a rectangular section with internal dimensions 108×52 mm. The shell thickness is 3 mm and the total length is 70 mm. The adapter has an offset of 10 mm along the Y axis and 20 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 81 mm
cylinder inlet length 15 mm
rectangle internal length 108 mm
rectangle internal height 52 mm
rectangle inlet length 15 mm
offset Z 20 mm
offset Y 10 mm
total length 70 mm
thickness 3 mm
chamfer no chamfer
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀81 mm and a rectangular section with inner dimensions 106×50 mm. The shell thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 10 mm along the Y axis and 10 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 81 mm
cylinder inlet length 20 mm
rectangle internal length 106 mm
rectangle internal height 50 mm
rectangle inlet length 30 mm
offset Z 10 mm
offset Y 10 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀81 mm and a rectangular section with inner dimensions 110×54 mm. The shell thickness is 3 mm and the overall length is 70 mm. The adapter has an offset of 10 mm along the Y axis and 20 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 81 mm
cylinder inlet length 15 mm
rectangle internal length 110 mm
rectangle internal height 54 mm
rectangle inlet length 15 mm
offset Z 20 mm
offset Y 10 mm
total length 70 mm
thickness 3 mm
chamfer no chamfer
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀70 mm and a rectangular section with inner dimensions 60×35 mm. The wall thickness is 3 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 70 mm
cylinder inlet length 15 mm
rectangle internal length 60 mm
rectangle internal height 35 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfer on t...
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀80 mm and a rectangular section with inner dimensions 80×80 mm. The shell thickness is 3 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 15 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer no chamfer
Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀106 mm and a rectangular section with inner dimensions 111×55 mm. The wall thickness is 3 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 30 mm
rectangle internal length 111 mm
rectangle internal height 55 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀126.0 mm and a rectangular section with internal dimensions 145.0×69.5 mm. The shell thickness is 3 mm and the overall length is 64.5 mm. The adapter has an offset of 16.7 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 126.0 mm
cylinder inlet length 20 mm
rectangle internal length 145.0 mm
rectangle internal height 69.5 mm
rectangle inlet length 11 mm
offset Z 16.7 mm
offset Y 0 mm
total length 64.5 mm
thickness 3 mm
chamfer no chamfer
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀110 mm and a rectangular section with internal dimensions 150×80 mm. The shell thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 20 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 30 mm
rectangle internal length 150 mm
rectangle internal height 80 mm
rectangle inlet length 30 mm
offset Z 20 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀146 mm and a rectangular section with inner dimensions 110×55 mm. The wall thickness is 3 mm and the overall length is 64 mm. The adapter has an offset of 4 mm along the Y axis and 4 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 146 mm
cylinder inlet length 15 mm
rectangle internal length 110 mm
rectangle internal height 55 mm
rectangle inlet length 29 mm
offset Z 4 mm
offset Y 4 mm
total length 64 mm
thickness 3 mm
chamfer no chamfer
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 100×30 mm. The shell thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 10 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 100 mm
rectangle internal height 30 mm
rectangle inlet length 40 mm
offset Z 10 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer
3D 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 92×92 mm. The wall thickness is 3 mm and the total length is 90 mm.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 20 mm
rectangle internal length 92 mm
rectangle internal height 92 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 3 mm
chamfer no chamfer
Model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 97×47 mm. The shell thickness is 2 mm and the total length is 60 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 10 mm
rectangle internal length 97 mm
rectangle internal height 47 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 2 mm
chamfer chamfer on t...