#### Shaft Elongation :

Shaft Elongation
 Total Dynamic Head (ft) : Setting from Head Base to Top of Bowls (ft) : Bowl Thrust Factor (lbs/ft of head) : Shaft Cross-Section (in) : Result :
##### Definition :
• The Shaft Elongation is a measure of deformation that occurs before a material eventually breaks when subjected to a tensile load.
• The pump shaft transmits the drivetorque to the impellers to centrifugal pumps or to the displacement elements of rotary positive displacement pumps.
• The shaft of reciprocating positive displacement pumps takes the shape of a crankshaft or a camshaft.
• Then, Pump shafts are stainless steel bars and that can vary in shape depending on the pump application.
• These bars are manufactured to a higher standard than common steel bars.
• While misalignment has no measurable effect on motor efficiency, correct shaft alignment ensures the smooth, efficient transmission of power from the motor to the driven equipment.
• Incorrect alignment occurs when the centerlines of the motor and then the driven equipment shafts are not in line with each other.
##### Types :
• Transmission shafts are used to transmit power between the source and the machine absorbing power. For Example, Counter shafts and Line shafts.
• Machine shafts are the integral part of the machine itself. For Example, Crankshaft.
• Axle shaft and Spindle shaft.
##### Formula :
• The formula for the calculation is given below.
• Shaft Elongation = (Total Dynamic Head * Setting from Head Base to Top of Bowls * Bowl Thrust Factor * 12) / (Shaft Cross-Section * 29000000).
• Beside the formula this calculator works.
##### How to Calculate ?
• First, Enter the Total Dynamic Head. Then,
• Second, Enter the Setting from Head Base to Top of Bowls. Then,
• Third, Enter the Bowl Thrust Factor. Then,
• Fourth, Enter the Shaft Cross Section.
• Click “Calculate” to get the result and then if you want to clear values Click “Reset” in addition to clear the values.
• Finally, follow these steps to get the result.