Engineering and Maintenance
Shaft Repair, Alignment and Balancing
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Shaft Repair, Alignment and Balancing Course
Introduction:
Course Objectives:
One of the most common causes of damaging vibration in rotating equipment is shaft misalignment. This comprehensive course trains the student in the need for precision shaft alignment and instructs in the popular methods to achieve it. Classroom and actual field alignments are performed using dial indicators.
Who Should Attend?
Maintenance, inspection & technical support engineers and supervisors.
Course Outlines:
ALIGNMENT THEORY
- Alignment preparation
- Consequences of misalignment
- Factors that influence alignment procedure
- Influence of eccentricity (run out )
- Influence of baseplate of machines (soft foot)
- Influence of axial position of machines
- Influence of bracket
- Alignment techniques
- Shaft setup of alignment
- Types of misalignment
- Two dial method of alignment
- Three dial method of alignment
- Reverse dial method of alignment
- Laser alignment
- Alignment tolerances
- Laser alignment procedure
- Applications of laser alignment
- Mathematical relationships
- Onboard laser alignment calculations
- Adjustment of thermal growth
- Hot alignment versus cold alignment
- Moving machinery in the field
- Misalignment severity
HOW TO DETECT THE MISALIGNMENT BY USING VIBRATION ANALYSIS
- Introduction
- Vibration parameters- Displacement- Velocity- Acceleration
- Limits and standard of vibration
- Vibration transducers and their mountings
- Basic of a single analysis
- Time waveform analysis
- Fast Fourier Transform analysis
- Phase measurements
- Vibration analysis for different machinery faults
- Unbalance
- Soft foot
- Misalignment
- Eccentricity
- Bent shaft
- Mechanical looseness
- Resonance
COUPLINGS TYPES
- Rigid couplings
- Flexible couplings
- Coupling misalignment tolerance