SEMINARS: Dynamic Field Balancing: Vibration Analysis Training & More by Technical Associates of Charlotte, North Carolina

DYNAMIC FIELD BALANCING AGENDA
Definition of Unbalance Types of Unbalance Static Unbalance Couple Unbalance Quasi-Static Unbalance Dynamic Unbalance Rigid Versus Flexible Rotors Recommended Balancing Speed and Number of Planes Balancing Machines - Soft Versus Hard Bearing
How To Ensure The Dominant Problem Is Unbalance: Review of Typical Spectra and Phase Behaviors For Common Machinery Problems Mass Unbalance Eccentric Rotor Bent Shaft Misalignment Resonance Mechanical Looseness/Weakness Summary of Phase Relationships For Various Machinery Problems Summary of Normal Unbalance Symptom
Causes of Unbalance: Assembly Errors Casting Blow Holes Fabrication Tolerance Problems Key Length Problems Rotational Distortion Deposit Buildup or Erosion Unsymmetrical Design
Dynamic Field Balancing Techniques: Recommended Trial Weight Size How a Strobe-Lit Mark on a Rotor Moves When a Trial Weight Is Moved Single Plane Balancing Using a Strobe Light And a Swept-Filter Analyzer With Remote Phase And a Portable Data Collector Two-Plane Balancing Using a Portable Data Collector Balancing Overhung Rotors By Classic Single-Plane Static-Couple Method By Classic Two-Plane Static-Couple Method Multi-Plane Balancing Splitting Balance Correction Weights Combining Balance Correction Weights Effect of Angular Measurement Errors On Potential Unbalance Reduction
Recommended Vibration and Balance Tolerances: Vibration Tolerances Recommended Overall Vibration Specifications Synopsis on Spectral Alarm Band Specifications Balance Tolerances on Allowable Residual Unbalance ISO 1940 Balance Quality Grades How To Determine Residual Unbalance Remaining In a Rotor After Balancing Comparison of ISO 1940 With API, Navy and Dupont Balance Specifications
Hands-On Instruction: Hands-On Demonstration of Single Plane Balancing Using a Strobe Light And a Swept-Filter Analyzer Using Remote Phase And a Portable Data Collector Hands-On Demonstration of Two-Plane Balancing Using Data Collector Hands-On Demonstration of Balancing Overhung Rotors Using Classic Single-Plane Static-Couple Method Using Classic Two-Plane Static-Couple Method Demonstration of Splitting Balance Correction Weights Demonstration of Combining Balance Correction Weights Demonstration On the Effect of Angular Measurement Errors
Prerequisites Previous field balancing experience is helpful, but is not required prior to taking the class. General familiarity with using today’s data collectors or portable balancing instruments is also beneficial (a variety of such instruments will be demonstrated during interactive class exercises). Good math skills and the ability to use and interpret graphs and tabular information will be beneficial in order to maximize understanding.