In-situ Dynamic Balancing

In-situ Dynamic Balancing

What is 'In-situ Dynamic Balancing'?

In-situ (or on-site) balancing is a form of rotational balancing which is achieved on site. Similar to car tire balancing however on an industrial scale, most impellers/rotors will develop imbalance due to many factors; some unavoidable. It can be detected using Vibration Analysis. In static imbalance, there is a single heavy spot in the unit which generates an imbalance force; by applying a balance force in the opposite direction, the two forces cancel out leaving the unit neutral and free of imbalance.

Coupled imbalance can occur with larger plane distance (long rotors for example), this is where there are two static spots on opposite planes are creating the imbalance forces. This can be described as a 'twist' in the unit balance. A combination of both coupled and static is where the opposite planes are out of sync and one side is also heavier than the other, this is called Dynamic Imbalance.

What are the benefits of 'In-situ Dynamic Balancing?

  • Reduce maintenance costs - Imbalance is a large factor in reducing the lifespan of bearings and other mechanical components, therefore by balancing machinery, these components last longer.
  • Reduced energy costs - units running out of balance generally consume more power as the driver must work harder to compensate, balancing will reduce overall energy costs
  • Noise/vibration reductions - Imbalance causes higher vibration and noise levels which can be greatly reduced once a unit is balanced.
  • No removal required - The unit does not need to be stripped and removed for in-situ balancing, reducing the repair cost of some machinery. However, not all dynamic imbalance can be rectified on-site due to physical restrictions; some may require a Workshop Balance.

Our services include On-Site Dynamic Balancing of all types of rotating components such as:

  • Generators
  • Compressors
  • Turbines
  • Pump impellers
  • Motor rotors
  • Gears
  • Crankshafts
  • Fans and blowers
  • Process rolls
  • Air Pulleys and sheaves
  • Bearing spindle assemblies
  • Printing drums
  • High-speed tooling
  • Cutting tools

Balancing: Single, Dual and Multiplane Vibration Balancing

Single/Dual Plane Balancing

  • 1 or 2 balancing planes
  • Rigid rotors
  • 1 to 4 sensors (1 or 2 per bearing)
  • Real time acquisition and 1X polar diagram (amplitude and phase)
  • Steady state speed acquisition
  • Acceptance of residual unbalance according to ISO 1940 / balancing quality selection
  • Size and weight: optimum size with OR34. Runs on the 3-Series instruments’ platform
  • Trim Balancing
  • Report generation
  • Designed for non-experts

Multiplane Balancing

  • 1 to 14 planes
  • Flexible or rigid rotors
  • Up to 32 channels for 1X acquisition
  • Run-up, Coast-down, steady-state
  • Balance at multiple speeds or ranges of speeds
  • Calculate predicted Amplitude vs. RPM after balancing correction
  • Multiplane report generation

Arrelic Expertise In-situ Dynamic Balancing

We have an extensive knowledge and enthusiastic drive when it comes to our work, we will always go the extra mile to ensure our service is the best service we can possibly provide.

Arrelic offer tailor-made reporting for every client, every part of the report can be modified to suit your needs and/or requirements, we are proud of our in-depth balancing reports and we are sure you will be happy with our reporting standard.

With competitive pricing and an unrivalled quality of service, Arrelic will meet your balancing needs.

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