Microlog® MX series Balancing module
Unbalance is defined as: “The uneven distri bution of mass about a rotor’s rotating centreline.” The rotating centreline can be defined as the axis about which the rotor would rotate if not constrained by its bearings. A second ary centreline, often referred to as the geo metric centreline (the physical centreline of the rotor) also exists. When these two centrelines coincide, the rotor will be in a state of balance. When they are apart, the rotor will be unbalanced. The MX series balancing module is a sim ple to use application, enabling users to cor rect a state of unbalance, if it has been diag nosed, and therefore to ensure smooth running and operation. The MX can display and output the fol lowing results: • Amount and angle. • Static couple components for two planes. • Dynamic coupling for 1 to 2 planes.
Key features • High precision 1 or 2 plane balancing. • Static or dynamic couple balancing. • Balance both slow and fast rotating machines. • Ability to resolve balance weights and trial weight estimator. • Easy to follow interface with graphical outputs. • Results displayed/printed in summary table. Some of the benefits associated with a well balanced, smooth running rotor are: • Minimize vibration – Unbalance is still the major source of machine vibration. • Minimize structural stress – The forces produced by unbalance have to be absorbed by the surrounding structure. • Increase machine and bearing life – The time between outages can be extended if the machine is running smoothly.
• Increase product quality – Minimum vibration, especially on machine tools, produces better parts. • Increase personnel safety – Dangers associated with machine failure and expo sure to high levels of vibration are minim ized. • Increase productivity – Machines run ning smoothly have more “uptime” availa bility • Lower operating costs – Extra machines are not required “just in case” of break downs. Spare capacity is kept to a min imum. Energy consumption is reduced.
Functional specifications No. of planes:
1 or 2 (simultaneously or sequentially), dynamic or static
Input signal types:
Accelerometers, velocity transducers, displacement probes, volts and manual
Measurement parameters:
Acceleration, A–V, A–D, velocity, V–D, displacement
Measurement units:
Imperial, metric
Balance weight positions:
Continuous, fixed
Functions:
Report – Summary weights and vibration levels Trail weight calculator Save partially completed runs Fix position of resultant weight location as number of positions/angle for fan balancing
Ordering information • CMXA-BAL-SL – Balancing module
SKF and Microlog are registered trademarks of the SKF Group. All other trademarks are the property of their respective owners. © SKF 2005 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless permission is granted. Every care has been taken to ensure the accuracy of the information contained in this pub lication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein. Publication 5599 EN
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