Custom Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 120×100 mm, thickness 2 mm + offset 📦#1937

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Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀300 mm and a rectangular section with inner dimensions 120×100 mm. The wall thickness is 2 mm and the total length is 300 mm. The adapter has an offset of 40 mm along the Y axis and 40 mm along the Z axis.
Generation date: 2025-09-22
3D Model Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 120×100 mm, thickness 2 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model1937-nb0_dd{id}.stl : 2.8 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 300 mm (≃11 13/16 in)
#2 cylinder inlet length 100 mm (≃3 15/16 in)
#3 rectangle internal length 120 mm (≃4.72 in)
#4 rectangle internal height 100 mm (≃3 15/16 in)
#5 rectangle inlet length 100 mm (≃3 15/16 in)
#6 offset Z 40 mm (≃1 9/16 in)
#7 offset Y 40 mm (≃1 9/16 in)
#8 total length 300 mm (≃11 13/16 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 296 mm (≃11.65 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 

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Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 100 mm
rectangle internal length 100 mm
rectangle internal height 80 mm
rectangle inlet length 90 mm
offset Z 30 mm
offset Y 30 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 220×110 mm, thickness 2 mm + offset (📦 #3319)

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Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 100 mm
rectangle internal length 220 mm
rectangle internal height 110 mm
rectangle inlet length 70 mm
offset Z 55 mm
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Round-to-Rectangular Tube Adapter STL file ⌀156 mm to 200×80 mm, thickness 3 mm + offset (📦 #9688)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀156 mm to 200×80 mm, thickness 3 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀156 mm and a rectangular section with internal dimensions 200×80 mm. The wall thickness is 3 mm and the total length is 300 mm. The adapter has an offset of 30 mm along the Y axis and 50 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 156 mm
cylinder inlet length 40 mm
rectangle internal length 200 mm
rectangle internal height 80 mm
rectangle inlet length 100 mm
offset Z 50 mm
offset Y 30 mm
total length 300 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀154 mm to 80×50 mm, thickness 2 mm + offset (📦 #1652)

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Parameter Value Unit
cylinder outer diameter 154 mm
cylinder inlet length 35 mm
rectangle internal length 80 mm
rectangle internal height 50 mm
rectangle inlet length 75 mm
offset Z 25 mm
offset Y 25 mm
total length 175 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 150×30 mm, thickness 3 mm + offset (📦 #7954)

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Parameter Value Unit
cylinder outer diameter 90 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 80×50 mm, thickness 3 mm + offset (📦 #1571)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 80×50 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with internal dimensions 80×50 mm. The wall thickness is 3 mm and the overall length is 150 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 150 mm
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rectangle internal height 50 mm
rectangle inlet length 50 mm
offset Z 25 mm
offset Y 25 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀156 mm to 200×80 mm, thickness 3 mm + offset (📦 #9654)

1 object(s) - format STL
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Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀156 mm and a rectangular section with internal dimensions 200×80 mm. The wall thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 30 mm along the Y axis and 20 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 156 mm
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Parameter Value Unit
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cylinder inlet length 100 mm
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1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 156 mm
cylinder inlet length 30 mm
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Parameter Value Unit
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Parameter Value Unit
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 50×100 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀300 mm and a rectangular section with inner dimensions 50×100 mm. The wall thickness is 2 mm and the total length is 200 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 300 mm
cylinder inlet length 100 mm
rectangle internal length 50 mm
rectangle internal height 100 mm
rectangle inlet length 50 mm
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1 object(s) - format STL
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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀105.4 mm and a rectangular section with inner dimensions 240.4×120 mm. The wall thickness is 2 mm and the overall length is 250 mm. The adapter has an offset of 50 mm along the Y axis. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 105.4 mm
cylinder inlet length 100 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀148 mm and a rectangular section with internal dimensions 228×80 mm. The wall thickness is 3 mm and the overall length is 150 mm. The adapter has an offset of 24 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 50 mm
rectangle internal length 228 mm
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1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 135×75 mm, thickness 2 mm + offset
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Parameter Value Unit
cylinder outer diameter 100 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 120×40 mm, thickness 2 mm + offset (📦 #1938)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 120×40 mm, thickness 2 mm + offset
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 35 mm
rectangle internal length 120 mm
rectangle internal height 40 mm
rectangle inlet length 75 mm
offset Z 25 mm
offset Y 25 mm
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Round-to-Rectangular Tube Adapter STL file ⌀148 mm to 200×80 mm, thickness 3 mm + offset (📦 #4271)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀148 mm to 200×80 mm, thickness 3 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀148 mm and a rectangular section with inner dimensions 200×80 mm. The shell thickness is 3 mm and the overall length is 150 mm. The adapter has an offset of 20 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 50 mm
rectangle internal length 200 mm
rectangle internal height 80 mm
rectangle inlet length 49 mm
offset Z 0 mm
offset Y 20 mm
total length 150 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 200×100 mm, thickness 2 mm + offset (📦 #9435)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 200×100 mm, thickness 2 mm + offset
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀160 mm and a rectangular section with inner dimensions 200×100 mm. The shell thickness is 2 mm and the total length is 200 mm. The adapter has an offset of 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 160 mm
cylinder inlet length 50 mm
rectangle internal length 200 mm
rectangle internal height 100 mm
rectangle inlet length 100 mm
offset Z 25 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀180 mm to 180×50 mm, thickness 3 mm (📦 #1915)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀180 mm to 180×50 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀180 mm and a rectangular section with inner dimensions 180×50 mm. The wall thickness is 3 mm and the overall length is 250 mm.
Parameter Value Unit
cylinder outer diameter 180 mm
cylinder inlet length 80 mm
rectangle internal length 180 mm
rectangle internal height 50 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
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1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 70 mm
rectangle internal length 172 mm
rectangle internal height 102.6 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 220×110 mm, thickness 2 mm + offset (📦 #3322)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 220×110 mm, thickness 2 mm + offset
Model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀106 mm and a rectangular section with internal dimensions 220×110 mm. The shell thickness is 2 mm and the total length is 290 mm. The adapter has an offset of 60 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 50 mm
rectangle internal length 220 mm
rectangle internal height 110 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 60 mm
total length 290 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 225×114 mm, thickness 2 mm + offset (📦 #3323)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀106 mm to 225×114 mm, thickness 2 mm + offset
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀106 mm and a rectangular section with inner dimensions 225×114 mm. The shell thickness is 2 mm and the overall length is 290 mm. The adapter has an offset of 60 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 50 mm
rectangle internal length 225 mm
rectangle internal height 114 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 60 mm
total length 290 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀204 mm to 300×60 mm, thickness 3 mm + offset (📦 #2083)

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 ⌀204 mm and a rectangular section with internal dimensions 300×60 mm. The wall thickness is 3 mm and the total length is 148 mm. The adapter has an offset of 44 mm along the Y axis and 44 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 204 mm
cylinder inlet length 10 mm
rectangle internal length 300 mm
rectangle internal height 60 mm
rectangle inlet length 50 mm
offset Z 44 mm
offset Y 44 mm
total length 148 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀109.4 mm to 240.4×120 mm, thickness 2 mm + offset (📦 #5990)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀109.4 mm to 240.4×120 mm, thickness 2 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀109.4 mm and a rectangular section with internal dimensions 240.4×120 mm. The shell thickness is 2 mm and the overall length is 250 mm. The adapter has an offset of 62 mm along the Y axis. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 109.4 mm
cylinder inlet length 100 mm
rectangle internal length 240.4 mm
rectangle internal height 120 mm
rectangle inlet length 26 mm
offset Z 0 mm
offset Y 62 mm
total length 250 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 50×200 mm, thickness 3 mm + offset (📦 #10064)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 50×200 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 50×200 mm. The shell thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 35 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 50 mm
rectangle internal height 200 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 35 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 200×100 mm, thickness 3 mm (📦 #6612)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 200×100 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀250 mm and a rectangular section with inner dimensions 200×100 mm. The wall thickness is 3 mm and the total length is 250 mm.
Parameter Value Unit
cylinder outer diameter 250 mm
cylinder inlet length 30 mm
rectangle internal length 200 mm
rectangle internal height 100 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀206 mm to 300×60 mm, thickness 3 mm + offset (📦 #2084)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀206 mm to 300×60 mm, thickness 3 mm + offset
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀206 mm and a rectangular section with inner dimensions 300×60 mm. The wall thickness is 3 mm and the overall length is 220 mm. The adapter has an offset of 44 mm along the Y axis and 44 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 206 mm
cylinder inlet length 10 mm
rectangle internal length 300 mm
rectangle internal height 60 mm
rectangle inlet length 50 mm
offset Z 44 mm
offset Y 44 mm
total length 220 mm
thickness 3 mm
chamfer chamfers on ...