Training & Seminars Optimize your balancing processes with our expert knowledge.

This course provides an in-depth look at jet engine balancing and builds upon the foundation laid in the Fundamentals of Jet Engine Balancing course. This course combines lecture and hands-on instruction focused on the theories behind jet engine balancing.

Topics Include:

Jet Engine Process Flow

• Moment weighing
• Static Balancing of rotor stages
• Dynamic balancing of rotor modules

Engine design considerations

• Materials and construction considerations
• Machining tolerances and errors
• Assembly tolerances and errors

Tooling

• Designs, benefits, repeatability
• Interference fit, hydraulic adapters, diaphragm adapters, collets
• Tolerances, runouts, etc.
• Design considerations
• Rotor configuration, machine capability, rotating vs. non-rotating tooling
• Build stands, lifting tools, balancing tooling, assembly tooling, tool carts, use of hand tools
• PMI rotor simulators

Applications of balancing software

Calibration and performance testing
Vibration Analysis

• How unbalance drives resonance
• Unbalance vs. alignment vs. natural frequency

Locations: Onsite, Online, Portal

Often used in succession to our Balancing Theory & Applications course, this program covers many similar topics in more detail. Universal balancing concepts are presented at a higher level with emphasis on rotor tolerances, high speed rotor balancing and practical design considerations to streamline production. You'll learn the theory behind rigid and flexible rotors and specific applications of ISO 1940 and ISO 11342. You'll also study the use of tooling on production applications, the potential error sources and how it can affect balancing tolerances. The selection of the appropriate balancing machine will be covered using real case studies as examples.
Other topics include:

• Operating Principles of hard and soft bearing balancing machines
• Applied ISO tolerance specifications
• Principles of rotor dynamics:
  • – Resonance
  • – Relationship of vibrating system to harmonic excitation of unbalance
  • – Phase response to unbalance
  • – Relationship of force and displacement
• Tooling:
  • – Influence of run outs and fit tolerances
  • – Proper indexing techniques
• Determine the correct tooling for the job
• Flexible rotor balancing
  • – Instrumentation tips and techniques using CAB690
  • – Balancing corrections in three planes
  • – Tolerance specifications as applied to rigid & flexible rotors
  • – High speed balancing machines and computer aided balancing of flexible rotors (CABFLEX++)
• Modern instrumentation usage for indication of balance, whip, Nyquist plots and their application
  to advanced balancing methods.
• Vibration analysis

Certification:
Level III-Balancing Specialist

Locations: Onsite, Online

Accurate vibration analysis can be the most valuable maintenance tool available. When used properly, it can provide the necessary information to completely evaluate machine condition, identify symptoms to avoid ongoing damage, determine the cause of damaged components and offer a prognosis for remaining service life. It can mean the difference between maximum production efficiency and catastrophic failure.

We begin this two-day program studying the modern methods used throughout the industry to effectively evaluate machine vibration, how it effects equipment, and how to identify an unbalance, misalignment, or bearing problem.

Other topics include:

• How to accurately evaluate machine condition using mechanical vibration
• Pinpointing relative shaft vibrations, absolute bearing vibrations and absolute shaft vibrations
• How to effectively use spectrum analysis for fault diagnostics
• CEPSTRUM – what it is and how to use it
• Identifying damage in rolling element bearings using Bearcon signature analysis
• Resonance frequencies and critical speeds

Three-day class including alignment and field balancing is available upon request.

Additional topics covered:

• The causes of unbalance
• Identifying static, quasi-static, dynamic and couple unbalance
• How to accurately measure and correct for an unbalance condition
• Determining the weight and location of correction mass
• Field balancing and trim balancing techniques for assembled rotors while in operational condition
• Single, two-plane and multi-plane balancing
• Selecting proper balancing tolerances by application
• Introduction to alignment and its influences
• Methods of alignment (Rim & face, reverse rim)
• Coupling errors, face errors, centering errors, and pitch errors
• Parallel offset and angular offset
• Principles of measurement and correction

Locations: Onsite

Main Topics:

• Fundamental principles/theoretical aspects
  similar to the courses described above - by arrangement, e.g. for a three-day course similar to course 101 Basics
• Measuring equipment and capabilities of the universal balancing machines available on site
• General balancing tasks, and specific aspects connected with balancing of the customer's rotors
• Balancing process
• Discussion of balancing methods used
• Possibilities of improvement

Target Audience:
Machine operators, foremen, development and design engineers, method engineers and production planners involved in processes in which universal balancing machines are used - both horizontal and vertical.

Number of participants
Depending on the type and number of balancing machines available and on the specific balancing task.

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Following the training course, we offer you targeted on-site production support. Our experts support your employees directly at the balancing machine – in the real production environment. The aim is to put the knowledge gained in the training course into practice immediately and to confidently master typical challenges in series production.

• Confident application of the knowledge learned to specific components
• Support during the initial setup and optimization of your balancing processes
• Error minimization through practical support during the start-up phase
• Individual tips and tricks for your employees

Our production support ensures that training content leads to sustainable process improvements – efficiently, practically, and precisely tailored to your requirements.

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