Shiv Motors Achrol

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he transmission of power from a motor to a pump is achieved by connecting the motor shaft to the pump shaft, either directly or through a coupling of some type. Misalignment can occur in three ways:

• Radial (offset or parallel) misalignment
  The centrelines of the two shafts are parallel but offset.
   
• Axial (or end float) misalignment
  The two shafts are aligned but one (or both) axles are prone to in/out movement along the centreline.
   
• Angular misalignment
  The centrelines of the two shafts are not parallel.

If these problems are not corrected, a system may suffer from a number of problems including the early failure of the pump or motor. Shaft misalignment can cause premature wear of a pump’s seal, packing, shaft, and bearings. This can then lead to excessive leakage and the system as a whole may exhibit excessive vibration and noise, reduced efficiency, and increased power and maintenance costs.

Centrifugal pumps used in petrochemical, chemical and refinery applications are regularly checked for alignment during installation, at frequent intervals during operation, and after service and maintenance.