Generate a rigid shaft coupling
A sleeve that joins two shafts end to end so they rotate as one. Rigid couplings transmit torque directly and are used where the shafts are already well aligned — misalignment goes straight into the bearings.
What it is used for
- Joining motor and driven shafts
- Extending shaft length
- Test rigs and prototypes
- Replacing failed couplings
Dimensions that matter
| Shaft diameter | The bore for both shafts. |
| Wall thickness | Sets the coupling's outer diameter and torque capacity. |
| Length | Longer couplings grip more shaft. |
What you get
A real solid model you can rotate and measure, plus downloadable STEP (machining and CAD), STL and 3MF (3D printing) and DXF (laser and waterjet) files. Optional built-in analysis covers stress (FEA), thermal, buckling, cost and manufacturability.
Before you see it, the built geometry is measured against the dimensions you stated, checked as a valid watertight solid, and — for assemblies — checked for interference. These are geometry and physics checks; they do not confirm the shape matches what you pictured, so review the 3D view or 2D drawing before relying on the part.
Previewing is free. Downloading is £2.99 per part, or unlimited on Pro (£29/month, £290/year).
Related parts
Common questions
What file formats do I get?
STEP, STL, 3MF and DXF — the formats CNC shops, laser cutters and 3D printers accept.
Can I change the dimensions afterwards?
Yes. Edit the numbers directly, or describe the change in plain English. Every edit is rebuilt and re-checked.
Do I need CAD experience?
No. Describe the part and its sizes in millimetres.
Is it free to try?
Yes — describing a part and viewing the 3D preview costs nothing.