Dynamic Field Balancing

Seminar Fee: $995
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Optional Field Balancing Certification Testing is available at a cost of $150 on the last day.

    

Add a Pocket Vibration Diagnostic Handbook for $49
Delivered to you at the Seminar.

    

DYNAMIC FIELD BALANCING SEMINAR

This course has 5 primary objectives:

(1) Use Hands-on Demonstrations to teach how to properly balance a variety of machinery using both graphical and programmable methods.

(2) Teach Single-plane and Dual-plane field balancing techniques using a variety of today’s data collector systems.

(3) Teach special balancing techniques required on overhung rotors.

(4) Instruct how to confirm unbalance is one of the dominant problems (using straightforward spectral & phase analysis).

(5) Provide and clearly explain today’s balancing tolerances. Includes a Certification Test in the afternoon on the last day of the course.
DYNAMIC FIELD BALANCING SEMINAR 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 of 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.
For more detailed information, please call Technical Associates of Charlotte, send us an email, or use our quick & convenient Online Request Form.
 
Call Technical Associates @ 704-333-9011
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