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Round-to-Rectangular Tube Adapter STL file ⌀20.3 mm to 20×10 mm, thickness 2 mm + offset 📦#1811

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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.
Generation date: 2025-09-16
3D Model Round-to-Rectangular Tube Adapter STL file ⌀20.3 mm to 20×10 mm, thickness 2 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model1811-nb0_dd{id}.stl : 834.8 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)
Safe download

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 20.3 mm
#2 cylinder inlet length 25 mm
#3 rectangle internal length 20 mm
#4 rectangle internal height 10 mm
#5 rectangle inlet length 30 mm
#6 offset Z 3 mm
#7 offset Y 0 mm
#8 total length 75 mm
#9 thickness 2 mm
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 16.3 mm
illustration of the parameters
Representation of the parameters

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

Round-to-Rectangular Tube Adapter STL 3D file ⌀20.3 mm to 20×10 mm, thickness 2 mm + offset (📦 #1810)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀20.3 mm to 20×10 mm, thickness 2 mm + offset
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀20.3 mm and a rectangular section with inner dimensions 20×10 mm. The shell thickness is 2 mm and the overall length is 75 mm. The adapter has an offset of 5 mm along the Y 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 20.3 mm
cylinder inlet length 25 mm
rectangle internal length 20 mm
rectangle internal height 10 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 5 mm
total length 75 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀32 mm to 55.1×20 mm, thickness 2 mm (📦 #1921)

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Round-to-Rectangular Tube Adapter STL file ⌀32 mm to 55.1×20 mm, thickness 2 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀32 mm and a rectangular section with inner dimensions 55.1×20 mm. The wall thickness is 2 mm and the overall length is 55 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 32 mm
cylinder inlet length 15 mm
rectangle internal length 55.1 mm
rectangle internal height 20 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 55 mm
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Round-to-Rectangular Tube Adapter STL file ⌀52 mm to 77×33 mm, thickness 2 mm (📦 #2200)

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Round-to-Rectangular Tube Adapter STL file ⌀52 mm to 77×33 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀52 mm and a rectangular section with inner dimensions 77×33 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 to ease insertion.
Parameter Value Unit
cylinder outer diameter 52 mm
cylinder inlet length 20 mm
rectangle internal length 77 mm
rectangle internal height 33 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 50×10 mm, thickness 2 mm + offset (📦 #1498)

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Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 50×10 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀60 mm and a rectangular section with inner dimensions 50×10 mm. The wall thickness is 2 mm and the overall length is 60 mm. The adapter has an offset of 17.5 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 60 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 10 mm
rectangle inlet length 10 mm
offset Z 17.5 mm
offset Y 0 mm
total length 60 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×45 mm, thickness 2 mm + offset (📦 #1869)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×45 mm, thickness 2 mm + offset
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Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 30 mm
rectangle internal length 100 mm
rectangle internal height 45 mm
rectangle inlet length 30 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×48 mm, thickness 2 mm + offset (📦 #1862)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 100×48 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀60 mm and a rectangular section with internal dimensions 100×48 mm. The shell thickness is 2 mm and the overall length is 100 mm. The adapter has an offset of 15 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 60 mm
cylinder inlet length 30 mm
rectangle internal length 100 mm
rectangle internal height 48 mm
rectangle inlet length 30 mm
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thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 60×60 mm, thickness 2 mm (📦 #1919)

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Parameter Value Unit
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cylinder inlet length 30 mm
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rectangle internal height 60 mm
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Round-to-Rectangular Tube Adapter STL file ⌀77 mm to 50×10 mm, thickness 2 mm + offset (📦 #1917)

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Round-to-Rectangular Tube Adapter STL file ⌀77 mm to 50×10 mm, thickness 2 mm + offset
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Parameter Value Unit
cylinder outer diameter 77 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 10 mm
rectangle inlet length 10 mm
offset Z 17.5 mm
offset Y 0 mm
total length 60 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 65×65 mm, thickness 2 mm (📦 #2974)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀60 mm to 65×65 mm, thickness 2 mm
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Parameter Value Unit
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL 3D file ⌀58 mm to 100×45 mm, thickness 2 mm (📦 #1907)

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Parameter Value Unit
cylinder outer diameter 58 mm
cylinder inlet length 10 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀68 mm to 47×66 mm, thickness 2 mm (📦 #2956)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀68 mm to 47×66 mm, thickness 2 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀68 mm and a rectangular section with internal dimensions 47×66 mm. The wall thickness is 2 mm and the overall length is 80 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 68 mm
cylinder inlet length 30 mm
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Round-to-Rectangular Tube Adapter STL file ⌀68 mm to 47×66 mm, thickness 2 mm (📦 #2975)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀68 mm to 47×66 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀68 mm and a rectangular section with internal dimensions 47×66 mm. The shell thickness is 2 mm and the overall length is 55 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 68 mm
cylinder inlet length 30 mm
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rectangle internal height 66 mm
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total length 55 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 60×30 mm, thickness 2 mm (📦 #1509)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 60×30 mm, thickness 2 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀65 mm and a rectangular section with inner dimensions 60×30 mm. The wall thickness is 2 mm and the overall length is 80 mm. A chamfer is present on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 10 mm
rectangle internal length 60 mm
rectangle internal height 30 mm
rectangle inlet length 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset (📦 #2896)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀21.9 mm to 80×80 mm, thickness 2 mm + offset
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.
Parameter Value Unit
cylinder outer diameter 21.9 mm
cylinder inlet length 30 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 35 mm
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offset Y 7.5 mm
total length 90 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀70 mm to 60×30 mm, thickness 2 mm (📦 #1510)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀70 mm to 60×30 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀70 mm and a rectangular section with internal dimensions 60×30 mm. The wall thickness is 2 mm and the total length is 80 mm. A chamfer is present on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 70 mm
cylinder inlet length 10 mm
rectangle internal length 60 mm
rectangle internal height 30 mm
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Round-to-Rectangular Tube Adapter STL file ⌀22 mm to 30.1×40 mm, thickness 3 mm (📦 #2934)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀22 mm to 30.1×40 mm, thickness 3 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀22 mm and a rectangular section with internal dimensions 30.1×40 mm. The shell thickness is 3 mm and the total length is 50 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 22 mm
cylinder inlet length 20 mm
rectangle internal length 30.1 mm
rectangle internal height 40 mm
rectangle inlet length 6 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀40 mm to 68×24 mm, thickness 3 mm (📦 #2198)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀40 mm to 68×24 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀40 mm and a rectangular section with internal dimensions 68×24 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 40 mm
cylinder inlet length 40 mm
rectangle internal length 68 mm
rectangle internal height 24 mm
rectangle inlet length 40 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 ⌀20 mm to 100×30 mm, thickness 3 mm + offset (📦 #1941)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀20 mm to 100×30 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀20 mm and a rectangular section with inner dimensions 100×30 mm. The wall thickness is 3 mm and the overall length is 70 mm. The adapter has an offset of 5 mm along the Y axis and 5 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 20 mm
cylinder inlet length 20 mm
rectangle internal length 100 mm
rectangle internal height 30 mm
rectangle inlet length 30 mm
offset Z 5 mm
offset Y 5 mm
total length 70 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀40 mm to 77×33 mm, thickness 3 mm (📦 #2199)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀40 mm to 77×33 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀40 mm and a rectangular section with internal dimensions 77×33 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 40 mm
cylinder inlet length 40 mm
rectangle internal length 77 mm
rectangle internal height 33 mm
rectangle inlet length 40 mm
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total length 100 mm
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Round-to-Rectangular Tube Adapter STL file ⌀58 mm to 62×82 mm, thickness 2 mm (📦 #2596)

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Round-to-Rectangular Tube Adapter STL file ⌀58 mm to 62×82 mm, thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 58 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
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Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 50×63 mm, thickness 2 mm (📦 #2228)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 50×63 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀65 mm and a rectangular section with inner dimensions 50×63 mm. The shell thickness is 2 mm and the overall length is 80 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 30 mm
rectangle internal length 50 mm
rectangle internal height 63 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 50×10 mm, thickness 2 mm + offset (📦 #1870)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 50×10 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀101.6 mm and a rectangular section with internal dimensions 50×10 mm. The shell thickness is 2 mm and the overall length is 60 mm. The adapter has an offset of 17.5 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 101.6 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 10 mm
rectangle inlet length 10 mm
offset Z 17.5 mm
offset Y 0 mm
total length 60 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 62×82 mm, thickness 2 mm (📦 #2595)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 62×82 mm, thickness 2 mm
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀65 mm and a rectangular section with inner dimensions 62×82 mm. The shell thickness is 2 mm and the overall length is 100 mm. A chamfer is present on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 65 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...

Round-to-Rectangular Tube Adapter STL 3D file ⌀58 mm to 150×48 mm, thickness 2 mm + offset (📦 #1865)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀58 mm to 150×48 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀58 mm and a rectangular section with internal dimensions 150×48 mm. The wall thickness is 2 mm and the overall length is 100 mm. The adapter has an offset of 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 58 mm
cylinder inlet length 30 mm
rectangle internal length 150 mm
rectangle internal height 48 mm
rectangle inlet length 30 mm
offset Z 15 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 169×17 mm, thickness 2 mm + offset (📦 #2982)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 169×17 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀60 mm and a rectangular section with internal dimensions 169×17 mm. The shell thickness is 2 mm and the overall length is 82.6 mm. The adapter has an offset of 10.2 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 60 mm
cylinder inlet length 20 mm
rectangle internal length 169 mm
rectangle internal height 17 mm
rectangle inlet length 40 mm
offset Z 10.2 mm
offset Y 0 mm
total length 82.6 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 43×82 mm, thickness 2 mm (📦 #2601)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 43×82 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀78 mm and a rectangular section with inner dimensions 43×82 mm. The wall thickness is 2 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 78 mm
cylinder inlet length 30 mm
rectangle internal length 43 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...

Round-to-Rectangular Tube Adapter STL 3D file ⌀94 mm to 45.5×45.5 mm, thickness 2 mm + offset (📦 #2802)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀94 mm to 45.5×45.5 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀94 mm and a rectangular section with inner dimensions 45.5×45.5 mm. The shell thickness is 2 mm and the total length is 95 mm. The adapter has an offset of 10 mm along the Y axis and 10 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 94 mm
cylinder inlet length 20 mm
rectangle internal length 45.5 mm
rectangle internal height 45.5 mm
rectangle inlet length 20 mm
offset Z 10 mm
offset Y 10 mm
total length 95 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...

Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 110×55 mm, thickness 2 mm + offset (📦 #2320)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 110×55 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 110×55 mm. The wall thickness is 2 mm and the total length is 63 mm. The adapter has an offset of 8 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 110 mm
rectangle internal height 55 mm
rectangle inlet length 20 mm
offset Z 8 mm
offset Y 0 mm
total length 63 mm
thickness 2 mm
chamfer chamfers on ...