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  4. Backward Centrifugal Fan | 3D Engineering Design File
📐 2D Technical Drawings🤖 AI GeneratedFree Download

Backward Centrifugal Fan | 3D Engineering Design File 2D Technical Drawing Set

4
Drawing sheets
4
Views analysed
3
Export formats
1
Section cuts
1st Angle
Projection type
20 May 2026
Generated date
STEP
Source CAD format
Backward Centrifugal Fan | 3D Engineering Design File
Source 3D model
MPreview · 2D Drawing Sheets
1 / 4
⚠Verify critical dimensions against the source CAD model before using these drawings for manufacturing or production release. Download the FCStd file where available for the most accurate editable source.
Assembly - Front View
Download all drawing sheets
Download FreeCAD source fileDownload all formats as ZIP
PDF4 sheets
SVG4 files
DXF4 files
🧊Open source 3D CAD model→
ℹ️

These are 2D engineering drawings derived from the 3D CAD geometry. Verify critical dimensions against the source model before manufacturing.

🤖

Views, section cuts, and detail areas were selected by AI based on analysis of 6 rendered views of the 3D model.

AI Drawing Analysis

What the AI Decided & Why

The cards below explain how the generated drawing outputs and assets connect to the final technical sheets.

Assembly - Front View

Assembly - Front View

Orthographic

Shows the overall height, width, and the main inlet opening with the impeller visible through the housing. Essential for understanding the fan's frontal profile and mounting points.

Assembly - Top View

Assembly - Top View

Orthographic

Reveals the depth of the assembly, the motor position relative to the impeller, and the overall footprint. Critical for installation space planning and understanding the internal layout.

Assembly - Left View

Assembly - Left View

Orthographic

Displays the impeller diameter, the motor mounting flange, and the side profile of the housing. Shows the circular impeller face and bearing arrangement clearly.

Section A-A

Section A-A

Orthographic

Vertical section through the centerline reveals the impeller bore diameter (~43.5 mm), internal housing wall thickness, motor shaft diameter (~18 mm), and the internal cavity structure of the fan housing.

A — Asection_a · Section5
sheet_num: 5 · edges: 50

Vertical section through the centerline reveals the impeller bore diameter (~43.5 mm), internal housing wall thickness, motor shaft diameter (~18 mm), and the internal cavity structure of the fan housing.

  • 50 resolved edges in sheet geometry
  • See technical_drawing_simple.pdf, sheet_N.pdf, and svg/ for full graphical context
  • Verify critical dimensions against the source CAD before manufacturing
Detail Bdetail_b · base_view: Left
anchor: (639.099, 1402.581, -327.509) · radius: 80

Magnifies the impeller mounting flange area showing the bolt pattern (6 holes at ~62 mm diameter), the central bore, and the mounting surface details for assembly clarity.

  • Detail-view anchor selected by the AI planning stage
  • Use with sheet PDF/SVG for local feature inspection
  • Validate critical dimensions against source CAD before release

Downloads

Download Individual Sheets

Each sheet available in PDF, SVG, and DXF. Click a format badge to download.

Assembly - Front View
PDFSVGDXF
Assembly - Top View
PDFSVGDXF
Assembly - Left View
PDFSVGDXF
Section A-A
PDFSVGDXF

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  • ✓ 9 sheets · editable FCStd + PDF, SVG, DXF
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AI Transparency

How these drawings were generated

These drawings were generated from the source 3D CAD geometry. The system analysed the model, selected relevant views, planned section cuts and generated drawing sheets in PDF, SVG and DXF formats.

These are 2D engineering drawings, not 3D files. Dimensions are extracted from the 3D geometry and should be verified against the source model before use in manufacturing.

Run Metadata

4
Views analysed
4
Sheets generated
1
Section cuts
3
Export formats
20 May 2026
Generated date

Explore Marathon OS

Related resources

Jump to the source 3D model, generate your own drawings, or browse tools and libraries.

Open source 3D CAD modelPreview the original 3D geometry used to generate these drawings→
Generate your own 2D drawingUpload STEP, STP, IGES or FreeCAD — get PDF, SVG and DXF→Browse more 2D technical drawingsExplore AI-generated orthographic sheets across part types→Browse 3D CAD modelsDownload and preview open-source STEP, STL and IGES files→Open CAD files onlineView STEP, IGES, STL and more in your browser→Convert CAD files onlineConvert between STEP, STL, OBJ and other 3D formats→Get manual drafting supportWork with vetted CAD designers for production-ready drawings→

Preview the Source 3D CAD Model

Open the original 3D CAD model used to generate this 2D drawing set. Review the source geometry before downloading or using the technical drawings.

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