Custom Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 50×100 mm, thickness 2 mm 📦#1976

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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.
Generation date: 2025-09-24
3D Model Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 50×100 mm, thickness 2 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model1976-nb0_dd{id}.stl : 4.7 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 50 mm (≃1.97 in)
#4 rectangle internal height 100 mm (≃3 15/16 in)
#5 rectangle inlet length 50 mm (≃1.97 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 200 mm (≃7 7/8 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
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 

Round-to-Rectangular Tube Adapter STL file ⌀280 mm to 100×100 mm, thickness 3 mm (📦 #1683)

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Round-to-Rectangular Tube Adapter STL file ⌀280 mm to 100×100 mm, thickness 3 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀280 mm and a rectangular section with inner dimensions 100×100 mm. The shell thickness is 3 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 to ease insertion.
Parameter Value Unit
cylinder outer diameter 280 mm
cylinder inlet length 25 mm
rectangle internal length 100 mm
rectangle internal height 100 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm (📦 #1970)

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Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 75 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 152 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
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offset Y 0 mm
total length 250 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 250×150 mm, thickness 3 mm + offset (📦 #2131)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 250×150 mm, thickness 3 mm + offset
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Parameter Value Unit
cylinder outer diameter 250 mm
cylinder inlet length 50 mm
rectangle internal length 250 mm
rectangle internal height 150 mm
rectangle inlet length 80 mm
offset Z 15 mm
offset Y 0 mm
total length 165 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm (📦 #1971)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm
Download this 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 198×98 mm. The shell thickness is 2 mm and the overall length is 127 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 150 mm
cylinder inlet length 50 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
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offset Z 0 mm
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thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm (📦 #3299)

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Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀145 mm and a rectangular section with inner dimensions 120×120 mm. The shell 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 145 mm
cylinder inlet length 50 mm
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rectangle inlet length 20 mm
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thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 200×200 mm, thickness 3 mm (📦 #1684)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 200×200 mm, thickness 3 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀300 mm and a rectangular section with internal dimensions 200×200 mm. The shell thickness is 3 mm and the overall length is 200 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 300 mm
cylinder inlet length 25 mm
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Round-to-Rectangular Tube Adapter STL file ⌀128 mm to 60×110 mm, thickness 3 mm + offset (📦 #1784)

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Round-to-Rectangular Tube Adapter STL file ⌀128 mm to 60×110 mm, thickness 3 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀128 mm and a rectangular section with inner dimensions 60×110 mm. The wall thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 40 mm along the Z axis. A chamfer is present on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 128 mm
cylinder inlet length 60 mm
rectangle internal length 60 mm
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Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 80×80 mm, thickness 2 mm (📦 #3740)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 80×80 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀105 mm and a rectangular section with internal dimensions 80×80 mm. The shell thickness is 2 mm and the overall length is 150 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 105 mm
cylinder inlet length 50 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 51 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 50×120 mm, thickness 2 mm (📦 #2023)

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Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 50 mm
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Parameter Value Unit
cylinder outer diameter 260 mm
cylinder inlet length 25 mm
rectangle internal length 100 mm
rectangle internal height 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀128 mm to 114×58 mm, thickness 3 mm (📦 #2416)

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3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀128 mm and a rectangular section with internal dimensions 114×58 mm. The shell thickness is 3 mm and the total length is 220 mm. 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 128 mm
cylinder inlet length 50 mm
rectangle internal length 114 mm
rectangle internal height 58 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 100×80 mm, thickness 2 mm + offset (📦 #3852)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 100×80 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀200 mm and a rectangular section with inner dimensions 100×80 mm. The shell thickness is 2 mm and the overall length is 250 mm. The adapter has an offset of 30 mm along the Y axis and 30 mm along the Z axis.
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
total length 250 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×115 mm, thickness 4 mm (📦 #2682)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×115 mm, thickness 4 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀150 mm and a rectangular section with internal dimensions 200×115 mm. The shell thickness is 4 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 to ease insertion.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 200 mm
rectangle internal height 115 mm
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offset Y 0 mm
total length 200 mm
thickness 4 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm (📦 #4072)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀150 mm and a rectangular section with internal dimensions 200×80 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 200 mm
rectangle internal height 80 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 file ⌀110 mm to 170×120 mm, thickness 3 mm (📦 #4278)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀110 mm to 170×120 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀110 mm and a rectangular section with inner dimensions 170×120 mm. The shell thickness is 3 mm and the total length is 280 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 70 mm
rectangle internal length 170 mm
rectangle internal height 120 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 280 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 180×60 mm, thickness 3 mm (📦 #2068)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 180×60 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀200 mm and a rectangular section with internal dimensions 180×60 mm. The wall thickness is 3 mm and the total length is 150 mm.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 30 mm
rectangle internal length 180 mm
rectangle internal height 60 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 120×120 mm, thickness 2 mm (📦 #1800)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 120×120 mm, thickness 2 mm
Download this 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 120×120 mm. The shell thickness is 2 mm and the overall length is 200 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 120 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀249 mm to 204×204 mm, thickness 3 mm (📦 #1893)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀249 mm to 204×204 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀249 mm and a rectangular section with inner dimensions 204×204 mm. The shell thickness is 3 mm and the total length is 249 mm. 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 249 mm
cylinder inlet length 20 mm
rectangle internal length 204 mm
rectangle internal height 204 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 249 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀128 mm to 60×110 mm, thickness 3 mm + offset (📦 #1783)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀128 mm to 60×110 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀128 mm and a rectangular section with internal dimensions 60×110 mm. The wall thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 40 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 128 mm
cylinder inlet length 60 mm
rectangle internal length 60 mm
rectangle internal height 110 mm
rectangle inlet length 60 mm
offset Z 40 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀158 mm to 190×110 mm, thickness 4 mm (📦 #2532)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀158 mm to 190×110 mm, thickness 4 mm
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀158 mm and a rectangular section with internal dimensions 190×110 mm. The wall thickness is 4 mm and the overall length is 118.4 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 158 mm
cylinder inlet length 43 mm
rectangle internal length 190 mm
rectangle internal height 110 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 118.4 mm
thickness 4 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀132 mm to 114×58 mm, thickness 3 mm + offset (📦 #2417)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀132 mm to 114×58 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀132 mm and a rectangular section with inner dimensions 114×58 mm. The wall thickness is 3 mm and the total length is 220 mm. The adapter has an offset of 35 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 132 mm
cylinder inlet length 50 mm
rectangle internal length 114 mm
rectangle internal height 58 mm
rectangle inlet length 99 mm
offset Z 35 mm
offset Y 0 mm
total length 220 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×20 mm, thickness 2 mm (📦 #3726)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×20 mm, thickness 2 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 200×20 mm. The shell thickness is 2 mm and the total length is 300 mm. 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 100 mm
cylinder inlet length 100 mm
rectangle internal length 200 mm
rectangle internal height 20 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
total length 300 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 110×110 mm, thickness 3 mm + offset (📦 #1782)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 110×110 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀125 mm and a rectangular section with internal dimensions 110×110 mm. The wall thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 40 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 125 mm
cylinder inlet length 60 mm
rectangle internal length 110 mm
rectangle internal height 110 mm
rectangle inlet length 60 mm
offset Z 40 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm (📦 #4274)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀148 mm and a rectangular section with inner dimensions 228×80 mm. The shell thickness is 3 mm and the overall length is 150 mm.
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 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 145.0×70 mm, thickness 3 mm (📦 #2308)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 145.0×70 mm, thickness 3 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀148 mm and a rectangular section with internal dimensions 145.0×70 mm. The wall thickness is 3 mm and the overall length is 150 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 148 mm
cylinder inlet length 25 mm
rectangle internal length 145.0 mm
rectangle internal height 70 mm
rectangle inlet length 80 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 150×50 mm, thickness 2 mm (📦 #1616)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 150×50 mm, thickness 2 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 150×50 mm. The wall thickness is 2 mm and the overall length is 150 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 150 mm
rectangle internal height 50 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀154 mm to 214×44 mm, thickness 2 mm (📦 #2865)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀154 mm to 214×44 mm, thickness 2 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀154 mm and a rectangular section with internal dimensions 214×44 mm. The wall thickness is 2 mm and the overall length is 300 mm.
Parameter Value Unit
cylinder outer diameter 154 mm
cylinder inlet length 50 mm
rectangle internal length 214 mm
rectangle internal height 44 mm
rectangle inlet length 18 mm
offset Z 0 mm
offset Y 0 mm
total length 300 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 152×82 mm, thickness 3 mm (📦 #4106)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 152×82 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀108 mm and a rectangular section with internal dimensions 152×82 mm. The shell thickness is 3 mm and the total length is 120 mm. 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 108 mm
cylinder inlet length 40 mm
rectangle internal length 152 mm
rectangle internal height 82 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 3 mm
chamfer chamfers on ...