Engineering lab · Interactive tool
Shaft Torsion + Power Calculator.
Convert torque, power, and rotational speed while screening a solid or hollow circular shaft for elastic stress and twist.
Circular shaft / elastic torsion + transmitted power
Live calculationτ = Tr / J; θ = TL / (JG)Shaft results updated. Torque 100 newton meters. Maximum shear 32.59 megapascals. Yield factor of safety 6.55.
- T: torque
- P: power
- n: speed
- J: polar moment
- G: shear modulus
- L: shaft length
- 100 N·m mode: classical stress and twist
- 5 kW at 1500 rpm: 31.831 N·m torque
Added visible variables, two verification examples, and an experience connection. Calculation method is unchanged.
Related engineering capabilityStress is only one shaft-design constraint
The calculator uses classical elastic torsion for a prismatic circular shaft. It is useful for identifying whether strength, stiffness, or packaging is likely to control the first iteration.
Real shafts usually need combined bending and torsion, stress-concentration, fatigue, bearing, keyway, spline, critical-speed, transient-load, and manufacturing checks.
Escalate the model when
- Shoulders, grooves, keyways, or splines are present
- Bending and torsion act together
- Torque is cyclic, reversing, impulsive, or uncertain
- Critical speed, vibration, or alignment can control
- Fatigue life or safety consequence is significant
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