Shaft alignment is the positioning of two or more rotating shafts so their center lines form a single line when machines are working normally. There are three types of misalignments: parallel offset, angular offset, and combination offset. Common methods for shaft alignment include straightedge alignment, multiple dial gauge alignment, and laser alignment. Properly aligning shafts reduces friction, wear, energy consumption, vibration, and the risks of premature equipment breakdown. Shaft alignment increases machine reliability and saves costs for industries.

1. Shaft Alignment

2. Definition
Position of
Two or more rotating shafts
Center lines
Form a single line
When the machines are working at
normal

3. Parallel offset
Angular offsetCombination offset
Types of
Misalignments

4. Alignment methods
Straightedge
alignment
Multiple Dial gauge
alignment
Laser
alignment
Accuracy - -
Speed + +
Ease of use + +
Accuracy + +
Speed - -
Ease of use - -
Accuracy + +
Speed +
Ease of use +

5. Benefits of shaft alignment
 Friction, resulting in excessive wear, excessive energy consumption
 The possibility of premature breakdown of equipment
 Wear on bearings and seals, leading to premature failure
 Premature shaft and coupling failure
 Excessive seal lubricant leakage
 Failure of coupling and foundation bolts
 Vibration and noise
Reduce

6. Conclusion
Shaft alignment increases reliability of machines as well as it is cost saving method
in industries.
So,
Shaft alignment is performed after motor, pump, gearbox and coupling
replacement.

7. Thank You…