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Definition :
- Shaft elongation measures the deformation of a shaft under tensile load.
- Pump shafts transmit torque from the motor to impellers or displacement elements.
- Correct shaft alignment ensures smooth and efficient power transmission.
- Misalignment increases wear and reduces reliability.
Types of Shafts :
- Transmission shafts – used to transmit power between machines.
- Machine shafts – integral part of machines (e.g., crankshaft).
- Axle and spindle shafts.
Formula :
-
Shaft Elongation =
(Total Dynamic Head × Setting × Bowl Thrust Factor × 12) /
(Shaft Cross-Section × 29,000,000)
How to Calculate ?
- Enter total dynamic head.
- Enter setting from head base to top of bowls.
- Enter bowl thrust factor.
- Enter shaft cross-section area.
- Click “Calculate” to get shaft elongation.
- Click “Reset” to clear inputs.
Other Calculators :
