Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 45×45 mm, thickness 3 mm + offset 📦#3894

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3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with internal dimensions 45×45 mm. The shell thickness is 3 mm and the total length is 80 mm. The adapter has an offset of 15 mm along the Y axis and 15 mm along the Z axis.
Generation date: 2025-11-27
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 45×45 mm, thickness 3 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model3894-nb0_dd{id}.stl : 3.2 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 120 mm (≃4.72 in)
#2 cylinder inlet length 25 mm (≃0.98 in)
#3 rectangle internal length 45 mm (≃1.77 in)
#4 rectangle internal height 45 mm (≃1.77 in)
#5 rectangle inlet length 25 mm (≃0.98 in)
#6 offset Z 15 mm (≃0.59 in)
#7 offset Y 15 mm (≃0.59 in)
#8 total length 80 mm (≃3.15 in)
#9 thickness 3 mm (≃1/8 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 114 mm (≃4 1/2 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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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 file ⌀81 mm to 106×50 mm, thickness 3 mm + offset (📦 #1885)

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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 106×50 mm, thickness 3 mm + offset
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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
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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset (📦 #4014)

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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset
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

Round-to-Rectangular Tube Adapter STL 3D file ⌀81 mm to 110×54 mm, thickness 3 mm + offset (📦 #4022)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀81 mm to 110×54 mm, thickness 3 mm + offset
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

Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset (📦 #4012)

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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset
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 inner dimensions 108×52 mm. The wall thickness is 3 mm and the total length is 60 mm. The adapter has an offset of 10 mm along the Y 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 0 mm
offset Y 10 mm
total length 60 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 102×46 mm, thickness 3 mm + offset (📦 #3573)

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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 102×46 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀81 mm and a rectangular section with internal dimensions 102×46 mm. The shell thickness is 3 mm and the total length is 100 mm. The adapter has an offset of 25 mm along the Y axis and 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 81 mm
cylinder inlet length 20 mm
rectangle internal length 102 mm
rectangle internal height 46 mm
rectangle inlet length 30 mm
offset Z 25 mm
offset Y 25 mm
total length 100 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset (📦 #3572)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀81 mm to 108×52 mm, thickness 3 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀81 mm and a rectangular section with internal dimensions 108×52 mm. The wall thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 25 mm along the Y axis and 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 81 mm
cylinder inlet length 20 mm
rectangle internal length 108 mm
rectangle internal height 52 mm
rectangle inlet length 30 mm
offset Z 25 mm
offset Y 25 mm
total length 100 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 100×50 mm, thickness 3 mm + offset (📦 #1754)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 100×50 mm, thickness 3 mm + offset
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
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offset Z 3 mm
offset Y 3 mm
total length 100 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀119 mm to 114×79 mm, thickness 3 mm + offset (📦 #2248)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀119 mm to 114×79 mm, thickness 3 mm + offset
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Parameter Value Unit
cylinder outer diameter 119 mm
cylinder inlet length 30 mm
rectangle internal length 114 mm
rectangle internal height 79 mm
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offset Z 10.5 mm
offset Y 3 mm
total length 100 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀81 mm to 108×52 mm, thickness 3 mm + offset (📦 #4011)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀81 mm to 108×52 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀81 mm and a rectangular section with internal dimensions 108×52 mm. The wall thickness is 3 mm and the total length is 120 mm. The adapter has an offset of 10 mm along the Y 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 0 mm
offset Y 10 mm
total length 120 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀146 mm to 110×55 mm, thickness 3 mm + offset (📦 #9759)

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Parameter Value Unit
cylinder outer diameter 146 mm
cylinder inlet length 15 mm
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thickness 3 mm
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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
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Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 90×40 mm, thickness 3 mm + offset (📦 #7198)

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Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 20 mm
rectangle internal length 90 mm
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rectangle inlet length 15 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 100×50 mm, thickness 3 mm + offset (📦 #1966)

1 object(s) - format STL (5.0/5) 1 vote(s)
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 100×50 mm, thickness 3 mm + offset
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...

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.
Parameter Value Unit
cylinder outer diameter 103 mm
cylinder inlet length 15 mm
rectangle internal length 50 mm
rectangle internal height 50 mm
rectangle inlet length 30 mm
offset Z 20 mm
offset Y 0 mm
total length 85 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 25×76 mm, thickness 3 mm (📦 #1749)

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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
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Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 60×60 mm, thickness 3 mm (📦 #1502)

1 object(s) - format STL (5.0/5) 1 vote(s)
Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 60×60 mm, thickness 3 mm
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
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Round-to-Rectangular Tube Adapter STL file ⌀96 mm to 67×58 mm, thickness 3 mm (📦 #10040)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀96 mm to 67×58 mm, thickness 3 mm
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
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rectangle inlet length 32 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 file ⌀90 mm to 60×60 mm, thickness 3 mm (📦 #1563)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 60×60 mm, thickness 3 mm
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

Round-to-Rectangular Tube Adapter STL file ⌀140 mm to 80×80 mm, thickness 3 mm (📦 #2429)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀140 mm to 80×80 mm, thickness 3 mm
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀140 mm and a rectangular section with internal dimensions 80×80 mm. The wall thickness is 3 mm and the overall length is 80 mm.
Parameter Value Unit
cylinder outer diameter 140 mm
cylinder inlet length 30 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 80 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀96 mm to 70×61 mm, thickness 3 mm (📦 #10038)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀96 mm to 70×61 mm, thickness 3 mm
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
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Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 111×55 mm, thickness 3 mm (📦 #5030)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 111×55 mm, thickness 3 mm
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
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Round-to-Rectangular Tube Adapter STL file ⌀60 mm to 150×30 mm, thickness 3 mm + offset (📦 #5944)

1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 20 mm
rectangle internal length 150 mm
rectangle internal height 30 mm
rectangle inlet length 10 mm
offset Z 15 mm
offset Y 15 mm
total length 75 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 30×30 mm, thickness 2 mm + offset (📦 #2024)

1 object(s) - format STL (5.0/5) 1 vote(s)
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 30×30 mm, thickness 2 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 30×30 mm. The shell thickness is 2 mm and the total length is 100 mm. The adapter has an offset of 2 mm along the Y axis and 2 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 30 mm
rectangle internal height 30 mm
rectangle inlet length 20 mm
offset Z 2 mm
offset Y 2 mm
total length 100 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 80×80 mm, thickness 3 mm (📦 #2123)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 80×80 mm, thickness 3 mm
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

Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 100×30 mm, thickness 3 mm + offset (📦 #5664)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 100×30 mm, thickness 3 mm + offset
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

Round-to-Rectangular Tube Adapter STL file ⌀99 mm to 77×70 mm, thickness 3 mm (📦 #10036)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀99 mm to 77×70 mm, thickness 3 mm
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

Round-to-Rectangular Tube Adapter STL 3D file ⌀146 mm to 107×53 mm, thickness 2 mm + offset (📦 #9762)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀146 mm to 107×53 mm, thickness 2 mm + offset
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀146 mm and a rectangular section with internal dimensions 107×53 mm. The shell thickness is 2 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 107 mm
rectangle internal height 53 mm
rectangle inlet length 29 mm
offset Z 4 mm
offset Y 4 mm
total length 64 mm
thickness 2 mm
chamfer no chamfer

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
chamfer no chamfer