Custom Round-to-Rectangular Tube Adapter STL file ⌀31.7 mm to 50×16 mm, thickness 2 mm + offset 📦#7718

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3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀31.7 mm and a rectangular section with inner dimensions 50×16 mm. The wall thickness is 2 mm and the overall length is 55 mm. The adapter has an offset of 10 mm along the Z axis.
Generation date: 2026-03-09
3D Model Round-to-Rectangular Tube Adapter STL file ⌀31.7 mm to 50×16 mm, thickness 2 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model7718-nb0_dd{id}.stl : 1.6 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 31.7 mm (≃1 1/4 in)
#2 cylinder inlet length 10 mm (≃0.39 in)
#3 rectangle internal length 50 mm (≃1.97 in)
#4 rectangle internal height 16 mm (≃5/8 in)
#5 rectangle inlet length 10 mm (≃0.39 in)
#6 offset Z 10 mm (≃0.39 in)
#7 offset Y 0 mm (0 in)
#8 total length 55 mm (≃2.17 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 27.7 mm (≃1.09 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
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cylinder inlet length 17 mm
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rectangle internal height 13 mm
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Parameter Value Unit
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cylinder outer diameter 20 mm
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Parameter Value Unit
cylinder outer diameter 24 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀22 mm to 20×5 mm, thickness 2 mm (📦 #7973)

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Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀22 mm and a rectangular section with inner dimensions 20×5 mm. The shell thickness is 2 mm and the total length is 60 mm.
Parameter Value Unit
cylinder outer diameter 22 mm
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Parameter Value Unit
cylinder outer diameter 36 mm
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Parameter Value Unit
cylinder outer diameter 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 90×50 mm, thickness 2 mm (📦 #4487)

1 object(s) - format STL
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3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀50 mm and a rectangular section with inner dimensions 90×50 mm. The shell thickness is 2 mm and the total length is 50 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
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Round-to-Rectangular Tube Adapter STL file ⌀38 mm to 100×50 mm, thickness 2 mm (📦 #4359)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀38 mm to 100×50 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀38 mm and a rectangular section with inner dimensions 100×50 mm. The wall thickness is 2 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 38 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀52 mm to 50×41 mm, thickness 2 mm (📦 #4519)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀52 mm to 50×41 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀52 mm and a rectangular section with internal dimensions 50×41 mm. The wall thickness is 2 mm and the overall length is 50 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 52 mm
cylinder inlet length 10 mm
rectangle internal length 50 mm
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rectangle inlet length 7 mm
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offset Y 0 mm
total length 50 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀65 mm to 47×23 mm, thickness 2 mm (📦 #2800)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀65 mm to 47×23 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀65 mm and a rectangular section with inner dimensions 47×23 mm. The wall thickness is 2 mm and the total length is 50 mm.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 24 mm
rectangle internal length 47 mm
rectangle internal height 23 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀43 mm to 25×6 mm, thickness 2 mm (📦 #1750)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀43 mm to 25×6 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀43 mm and a rectangular section with internal dimensions 25×6 mm. The wall thickness is 2 mm and the overall length is 100 mm.
Parameter Value Unit
cylinder outer diameter 43 mm
cylinder inlet length 25 mm
rectangle internal length 25 mm
rectangle internal height 6 mm
rectangle inlet length 19 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 ⌀29 mm to 100×50 mm, thickness 2 mm (📦 #4305)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀29 mm to 100×50 mm, thickness 2 mm
Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀29 mm and a rectangular section with internal dimensions 100×50 mm. The wall thickness is 2 mm and the overall length is 100 mm.
Parameter Value Unit
cylinder outer diameter 29 mm
cylinder inlet length 7 mm
rectangle internal length 100 mm
rectangle internal height 50 mm
rectangle inlet length 10 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 ⌀50 mm to 32×32 mm, thickness 2 mm (📦 #1999)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 32×32 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀50 mm and a rectangular section with inner dimensions 32×32 mm. The wall thickness is 2 mm and the overall length is 100 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 25 mm
rectangle internal length 32 mm
rectangle internal height 32 mm
rectangle inlet length 15 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 ⌀26 mm to 35×20 mm, thickness 3 mm + offset (📦 #1617)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀26 mm to 35×20 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀26 mm and a rectangular section with internal dimensions 35×20 mm. The wall thickness is 3 mm and the overall length is 60 mm. The adapter has an offset of 12.5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 26 mm
cylinder inlet length 15 mm
rectangle internal length 35 mm
rectangle internal height 20 mm
rectangle inlet length 20 mm
offset Z 12.5 mm
offset Y 0 mm
total length 60 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀32 mm to 50×5 mm, thickness 2 mm (📦 #4520)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀32 mm to 50×5 mm, thickness 2 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀32 mm and a rectangular section with inner dimensions 50×5 mm. The shell thickness is 2 mm and the overall length is 120 mm.
Parameter Value Unit
cylinder outer diameter 32 mm
cylinder inlet length 20 mm
rectangle internal length 50 mm
rectangle internal height 5 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀36 mm to 50×5 mm, thickness 2 mm (📦 #4358)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀36 mm to 50×5 mm, thickness 2 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀36 mm and a rectangular section with internal dimensions 50×5 mm. The wall thickness is 2 mm and the overall length is 120 mm.
Parameter Value Unit
cylinder outer diameter 36 mm
cylinder inlet length 20 mm
rectangle internal length 50 mm
rectangle internal height 5 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 90×45 mm, thickness 2 mm (📦 #4486)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 90×45 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀50 mm and a rectangular section with inner dimensions 90×45 mm. The wall thickness is 2 mm and the overall length is 50 mm. A chamfer is present on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 15 mm
rectangle internal length 90 mm
rectangle internal height 45 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 95×45 mm, thickness 2 mm (📦 #4488)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀50 mm to 95×45 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀50 mm and a rectangular section with inner dimensions 95×45 mm. The shell thickness is 2 mm and the overall length is 50 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 7 mm
rectangle internal length 95 mm
rectangle internal height 45 mm
rectangle inlet length 7 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀32 mm to 35×20 mm, thickness 3 mm + offset (📦 #1619)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀32 mm to 35×20 mm, thickness 3 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀32 mm and a rectangular section with inner dimensions 35×20 mm. The wall thickness is 3 mm and the total length is 60 mm. The adapter has an offset of 5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 32 mm
cylinder inlet length 15 mm
rectangle internal length 35 mm
rectangle internal height 20 mm
rectangle inlet length 20 mm
offset Z 5 mm
offset Y 0 mm
total length 60 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀22 mm to 5×12 mm, thickness 2 mm (📦 #6546)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀22 mm to 5×12 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀22 mm and a rectangular section with inner dimensions 5×12 mm. The wall thickness is 2 mm and the total length is 70 mm.
Parameter Value Unit
cylinder outer diameter 22 mm
cylinder inlet length 30 mm
rectangle internal length 5 mm
rectangle internal height 12 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 70 mm
thickness 2 mm
chamfer no chamfer