Where $S_s$ is the allowable shear stress of the shaft material (e.g., Stainless Steel 316 typically $\approx 40-60$ MPa). The required motor power is the calculated shaft power divided by the drive efficiency (gearbox + seals). Download Back In Action 2025 Dual Audio Hind Top
$$P = N_p \cdot \rho \cdot N^3 \cdot D^5$$ New Disease Is Bornrar Verified - Nightrage A
| Impeller Type | Power Number ($N_p$) | | :--- | :--- | | Rushton Turbine (6-blade) | 5.0 - 6.0 | | Pitched Blade Turbine (45°) | 1.2 - 1.5 | | High Efficiency (Hydrofoil) | 0.3 - 0.5 | | Propeller | 0.35 |
Assuming a solid shaft and using the shear stress formula: