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 calculationElastic circular-shaft torsion
τ = Tr / J · θ = TL / JGStress 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
Direct senior involvement
Turn the product decision into a clear next step.
Share a non-confidential summary, the current stage, and the outcome the team needs.
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