Brackets and mounts
Slip-On Pipe Flange (30 mm Bore)
- Bounding box
- 100.0 × 100.0 × 27.0 mm
- Engine
- Precision B-rep
- Parameters
- 9
- Published
- November 10, 2026
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Free to download and use. See the terms.
The prompt
# CAD Design Prompt – Custom 30 mm Bore Slip-On Flange Design a fully dimensioned, manufacturing-ready **Slip-On Pipe Flange** in 3D CAD. ### 1. Main Requirements - Flange type: Slip-On Flange - Central bore diameter: **30 mm** - Material: Mild Steel (MS) - Design: Circular flange with a raised central hub. - Application: To fit over a pipe with an outer diameter of 30 mm. - Manufacturing method: CNC machining / turning and drilling. ### 2. Proposed Dimensions Use the following dimensions as an initial design proposal: | Parameter | Dimension | |---|---:| | Central bore | 30 mm | | Flange outer diameter | 100 mm | | Flange thickness | 12 mm | | Hub outer diameter | 45 mm | | Hub height | 15 mm | | Bolt holes | 4 | | Bolt hole diameter | 10 mm | | Bolt pitch circle diameter | 80 mm | | Edge chamfer | 1 × 45° | ### 3. Geometric Requirements 1. Create a circular flange plate with a central through-hole of 30 mm. 2. Add a concentric cylindrical hub around the central bore. 3. Ensure the hub and flange plate form a single solid body. 4. Create four equally spaced mounting holes on an 80 mm pitch circle diameter. 5. Maintain concentricity between the hub, flange and central bore. 6. Add suitable chamfers to remove sharp edges. 7. Ensure there are no overlapping or disconnected solid bodies. ### 4. CAD Deliverables Generate: - Editable 3D CAD model. - STEP (.STEP/.STP) file. - SolidWorks-compatible geometry. - 2D engineering drawing with front, side and sectional views. - Complete dimension annotations. - Material specification and manufacturing notes. ### 5. Important Engineering Constraints - The 30 mm bore must be a true through-hole. - The model must be symmetrical about its central axis. - All four mounting holes must be equally spaced at 90° intervals. - Ensure sufficient material remains between the central bore, hub and mounting holes. - Do not arbitrarily change the specified dimensions. Before finalising, check the model for geometric validity and manufacturing feasibility.
Parameters
| Name | Value | Range |
|---|---|---|
| Central bore diameter | 30 mm | 10 – 80 |
| Flange outer diameter | 100 mm | 60 – 250 |
| Flange thickness | 12 mm | 5 – 50 |
| Hub outer diameter | 45 mm | 35 – 120 |
| Hub height above flange | 15 mm | 1 – 60 |
| Bolt hole count | 4 pcs | 2 – 12 |
| Bolt hole diameter | 10 mm | 3 – 30 |
| Bolt pitch circle diameter | 80 mm | 40 – 220 |
| Edge chamfer (1 x 45°) | 1 mm | 0 – 3 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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