Custom Round-to-Rectangular Tube Adapter STL file ⌀101 mm to 250×38 mm, thickness 3 mm + offset 📦#3404

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Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀101 mm and a rectangular section with inner dimensions 250×38 mm. The shell thickness is 3 mm and the total length is 135 mm. The adapter has an offset of 17.5 mm along the Z axis.
Generation date: 2025-11-18
3D Model Round-to-Rectangular Tube Adapter STL file ⌀101 mm to 250×38 mm, thickness 3 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model3404-nb0_dd{id}.stl : 4.4 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 101 mm (≃3.98 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 250 mm (≃9.84 in)
#4 rectangle internal height 38 mm (≃1 1/2 in)
#5 rectangle inlet length 50 mm (≃1.97 in)
#6 offset Z 17.5 mm (≃11/16 in)
#7 offset Y 0 mm (0 in)
#8 total length 135 mm (≃5 5/16 in)
#9 thickness 3 mm (≃1/8 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 95 mm (≃3 3/4 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 3D file ⌀101 mm to 250×38 mm, thickness 3 mm (📦 #3403)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 250×38 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 101 mm
cylinder inlet length 50 mm
rectangle internal length 250 mm
rectangle internal height 38 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 135 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀103 mm to 290×28 mm, thickness 3 mm (📦 #4429)

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Parameter Value Unit
cylinder outer diameter 103 mm
cylinder inlet length 50 mm
rectangle internal length 290 mm
rectangle internal height 28 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 148 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 300×28 mm, thickness 3 mm (📦 #3401)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 300×28 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 101 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 28 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 148 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 300×28 mm, thickness 3 mm (📦 #3400)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 300×28 mm, thickness 3 mm
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 inner dimensions 300×28 mm. The wall thickness is 3 mm and the total length is 148 mm.
Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm + offset (📦 #4277)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀148 mm and a rectangular section with internal dimensions 228×80 mm. The shell thickness is 3 mm and the total length is 150 mm. The adapter has an offset of 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 50 mm
rectangle internal length 228 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 25 mm
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thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 124 mm
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rectangle internal length 224 mm
rectangle internal height 94 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm + offset (📦 #9048)

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Parameter Value Unit
cylinder outer diameter 104.7 mm
cylinder inlet length 40 mm
rectangle internal length 299 mm
rectangle internal height 55 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm (📦 #4274)

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Parameter Value Unit
cylinder outer diameter 148 mm
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rectangle internal height 80 mm
rectangle inlet length 50 mm
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offset Y 0 mm
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thickness 3 mm
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Parameter Value Unit
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Round-to-Rectangular Tube Adapter STL file ⌀48 mm to 239×24 mm, thickness 3 mm (📦 #1802)

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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀99.8 mm and a rectangular section with inner dimensions 300×40 mm. The wall thickness is 2 mm and the total length is 150 mm.
Parameter Value Unit
cylinder outer diameter 99.8 mm
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rectangle internal height 40 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 150×50 mm, thickness 3 mm + offset (📦 #1872)

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File in STL format of a round-to-rectangular adapter with an external diameter of ⌀105 mm and a rectangular section with inner dimensions 150×50 mm. The shell thickness is 3 mm and the overall length is 100 mm. The adapter has an offset of 10 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 105 mm
cylinder inlet length 30 mm
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rectangle internal height 50 mm
rectangle inlet length 50 mm
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thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 51 mm
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rectangle inlet length 51 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀96 mm to 240×35 mm, thickness 2 mm + offset (📦 #4683)

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Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀96 mm and a rectangular section with internal dimensions 240×35 mm. The wall thickness is 2 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 96 mm
cylinder inlet length 30 mm
rectangle internal length 240 mm
rectangle internal height 35 mm
rectangle inlet length 30 mm
offset Z 20 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm (📦 #9049)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀104.7 mm and a rectangular section with inner dimensions 299×55 mm. The wall thickness is 4 mm and the overall length is 120 mm.
Parameter Value Unit
cylinder outer diameter 104.7 mm
cylinder inlet length 40 mm
rectangle internal length 299 mm
rectangle internal height 55 mm
rectangle inlet length 39 mm
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offset Y 0 mm
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thickness 4 mm
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Round-to-Rectangular Tube Adapter STL file ⌀92 mm to 160×80 mm, thickness 2 mm + offset (📦 #3422)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀92 mm to 160×80 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀92 mm and a rectangular section with internal dimensions 160×80 mm. The shell thickness is 2 mm and the overall length is 140 mm. The adapter has an offset of 12.5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 92 mm
cylinder inlet length 50 mm
rectangle internal length 160 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
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offset Y 0 mm
total length 140 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 300×40 mm, thickness 3 mm (📦 #8531)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 300×40 mm, thickness 3 mm
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with internal dimensions 300×40 mm. The wall thickness is 3 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 40 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀101.5 mm to 203×12.5 mm, thickness 3 mm + offset (📦 #3681)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀101.5 mm to 203×12.5 mm, thickness 3 mm + offset
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀101.5 mm and a rectangular section with internal dimensions 203×12.5 mm. The wall thickness is 3 mm and the overall length is 180 mm. The adapter has an offset of 15 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 101.5 mm
cylinder inlet length 75 mm
rectangle internal length 203 mm
rectangle internal height 12.5 mm
rectangle inlet length 75 mm
offset Z 15 mm
offset Y 0 mm
total length 180 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 235×28 mm, thickness 3 mm + offset (📦 #5042)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 235×28 mm, thickness 3 mm + offset
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 235×28 mm. The wall thickness is 3 mm and the overall length is 170 mm. The adapter has an offset of 37.5 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 100 mm
cylinder inlet length 30 mm
rectangle internal length 235 mm
rectangle internal height 28 mm
rectangle inlet length 65 mm
offset Z 37.5 mm
offset Y 0 mm
total length 170 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 150×30 mm, thickness 3 mm + offset (📦 #7955)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀90 mm to 150×30 mm, thickness 3 mm + offset
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀90 mm and a rectangular section with internal dimensions 150×30 mm. The shell thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 35 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 90 mm
cylinder inlet length 50 mm
rectangle internal length 150 mm
rectangle internal height 30 mm
rectangle inlet length 50 mm
offset Z 35 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer