Shaft Design Calculator
Static · formula-only · worked example computed when this page was built · no live data
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, in AISI 1045 steel, 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. Anything the worked example does not state uses this calculator's standard default; the interactive version shows every input and lets you change it.
Worked example (Mechanical & Machine Design)
Inputs: a 15 kW shaft at 1450 rpm over a 600 mm span under a 2 kN radial load, in AISI 1045 steel.
| Result | Value |
|---|---|
| Shaft diameter | 35 mm |
| Torque | 98.79 N·m |
| Endurance limit | 182.22 MPa |
Computed by WorkHive's calculation engine when this page was built; standard: ASME B106.1M | ASME B17.1 | Shigley's MED 10th Ed.
How to use this calculator
- Read the worked example. It uses a 15 kW shaft at 1450 rpm over a 600 mm span under a 2 kN radial load, in AISI 1045 steel and shows every number in the method.
- Follow the formula with your own figures: it returns Shaft diameter, Torque, Endurance limit, computed per ASME B106.1M.
- To compute interactively, open the Shaft Design Calculator inside WorkHive's free Engineering Design suite (link below). It runs the same method with your inputs.
FAQ
What is a shaft diameter design calculator?
The Shaft Design Calculator is a free online tool that 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 is free: this worked example is open to everyone, and the interactive calculator runs inside the free Engineering Design suite after a free sign-up (your work is saved to your account). 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, and a free sign-up saves your calculations, BOMs and scope-of-works to your account.