Shaft Design Calculator
The Shaft Design Calculator finds the minimum shaft diameter from transmitted power, speed, and load, with an endurance-limit check. Example: for a 15 kW shaft at 1450 rpm over a 600 mm span under a 2 kN radial load, Shaft diameter = 35 mm, Torque = 98.79 N·m, Endurance limit = 182.22 MPa (per ASME B106.1M | ASME B17.1 | Shigley's MED 10th Ed.).
How it works
Computed from your inputs per ASME B106.1M | ASME B17.1 | Shigley's MED 10th Ed..
Worked example (Mechanical & Machine Design)
Inputs: a 15 kW shaft at 1450 rpm over a 600 mm span under a 2 kN radial load.
| Result | Value |
|---|---|
| Shaft diameter | 35 mm |
| Torque | 98.79 N·m |
| Endurance limit | 182.22 MPa |
Computed live by WorkHive's calculation engine; standard: ASME B106.1M | ASME B17.1 | Shigley's MED 10th Ed..
How to use this calculator
- Enter the figures for the duty you are sizing: the worked example below uses a 15 kW shaft at 1450 rpm over a 600 mm span under a 2 kN radial load.
- The calculator returns Shaft diameter, Torque, Endurance limit, computed per ASME B106.1M.
- Check the worked example to confirm the method matches how you would do it by hand, then run your own numbers in the interactive tool.
FAQ
What is a shaft diameter design calculator?
The Shaft Design Calculator is a free online tool that computes finds the minimum shaft diameter from transmitted power, speed, and load, with an endurance-limit check. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following ASME B106.1M. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive's engineering calculators are free to use, no sign-up needed for the tools. WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive Shaft Design Calculator in WorkHive: free, no sign-up needed for the calculators.