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Shaft Size Calculator
Calculate minimum shaft diameter based on torque and material properties
📖 Shaft Size
Shaft diameter must be sufficient to transmit torque without exceeding allowable shear stress. The minimum diameter depends on torque, material strength, and safety factor.
📊 Result
💡 Tips & Information
- Shaft diameter is typically measured in millimeters (mm) or inches
- Formula: d = (16T / (π × τ))^(1/3), where T is torque, τ is shear stress
- Typical steel shear stress: 40-60 MPa for mild steel
- Safety factor accounts for dynamic loads and material variations
- Consider keyways, threads, and stress concentrations in design