Analyze shafts with flexible inputs and practical conversions. Estimate torque using four reliable calculation methods. Plot trends, compare outputs, and export neat reports easily.
| Case | Method | Input Set | Torque Result |
|---|---|---|---|
| Drive Motor | Power and speed | 45 kW, 1450 rpm | 296.38 N·m |
| Pulley Load | Force and radius | 3200 N, 0.18 m | 576.00 N·m |
| Solid Steel Shaft | Solid shaft capacity | 65 MPa, 55 mm diameter | 1,070.23 N·m |
Use SI units whenever possible for clean engineering interpretation. The calculator converts entered values first, computes torque in N·m, then reports equivalent units.
Shaft torque is the twisting moment carried by a rotating member. It represents how strongly the shaft turns a load around its axis.
Use power and speed for motors, force and radius for pulleys or levers, and shaft capacity methods when sizing solid or hollow shafts from allowable stress.
For constant power, torque and speed move inversely. Higher shaft speed means the same power is delivered with less torque.
Yes. Force, diameter, radius, stress, and torque equivalents support common imperial choices, including lbf, inches, feet, psi, lbf·ft, and lbf·in.
Allowable shear stress is the design limit used to keep torsional stress within safe working conditions. It is usually lower than material yield strength.
Strength alone may be acceptable while stiffness is not. Angle of twist helps check whether the shaft rotates too much under the applied torque.
Yes. Hollow shafts often reduce weight while preserving good torsional performance. They are common in drivetrains, machinery, and rotating structural systems.
No. It supports preliminary engineering decisions. Final design should also consider fatigue, stress concentration, shock loading, keyways, misalignment, and safety factors.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.