everything that rotates
                        needs to be balanced


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Vibration Information for rotating machinery applications.


Measurement and Data Acquisition Equipment

Monday, November 14, 2011

Numerous companies specialize in supplying measurement and data acquisition systems. Equipment is available at various price points and with different capabilities. Selecting the appropriate equipment can save you time and money if done correctly.  Read More

Static Balancing

Friday, July 01, 2011

Static balancing was the primary method for balancing before more sophisticated machines became available that could dynamically measure imbalance in rotating parts. Static balancing can be accomplished by placing a part on knife edges; the part will usually rotate until the heaviest side rests at the bottom. Material can either be removed from the heavy side, or added to the opposite side to try and correct the imbalance. This process is repeated until the part can rest at any angle without turning. Read More

Balance Criteria for Rigid Rotor

Tuesday, June 14, 2011

Every single rotor needs to be balanced. It is often difficult to decide which particular balancing method to employ, rotational speed for balancing to be used, acceptable vibration level for balancing to be met, etc. Fortunately, there are some general guidelines for balance quality in rigid motor. Achieving close balance tolerances in rotors requires careful analysis of all factors that may introduce balance errors other than unbalance such as: damaged bearings, aerodynamics and hydrodynamic effects, misalignment, runouts, etc. Read More

The Importance of Balancing for Energy Efficiency

Thursday, May 12, 2011

Imperfections during manufacturing usually impact the balance in rotating machinery. It is expected that the center of rotation and the center of mass will not coincide perfectly, causing a mass imbalance in the system. Manufacturers currently overcome this issue by using specialized machinery to detect the location of imbalance; they then add or remove material from the machine accordingly to correct the situation. Read More

Vibration in Boat Propellers

Monday, April 25, 2011

boat propeller vibrationBoat propellers are mostly cast and made from various alloys. Porosity and shrinkage are usually formed during casting processes, and foreign materials or inclusions are often observed in cast propellers. These manufacturing defects generate mass imbalance in the propellers. Static balancing is required to balance the propellers by removing or grinding some materials. The balancing process is time consuming, tedious, and costly. Read More