Balancing of the rotor is therefore necessary to accomplish any of the following: • Reduce vibration • Increase bearing life • Reduce structural stresses • Reduce noise • Improve the quality of the product III. CAUSES OF UNBALANCE Manufacturing processes are the major source of unbalance.

Below is an overview of procedure for single plane field balancing. Refer product user manual for detailed instructions. metro B6012 is the easiest to use vibration analyzer and balancer suitable for periodic condition monitoring and field balancing of rotors, blowers, impellers, cooling towers, industrial fans, HVAC systems, motors, pumps

The mass balancing correction is undertaken within the normal operating speed range and establishes a matrix for a number of different speeds. The values are determined using a series of Fourier transformations. EP1256790A2 - Procedure for balancing rotors - Google Patents Procedure for balancing rotors Download PDF Info Publication number

Field balancing is the technique of balancing rotors in place as they are allowed to run at their typical operating speed with minimum disassembly. This technique can be used when the rotor is accessible to make corrections. When certain fans and blowers are enclosed and inaccessible, field balancing is not an option.

Primary Balancing describes the process where primary forces caused by unbalanced mass components in a rotating object may be re­ solved into one plane and balanced by adding a mass in that plane only. This is known as Static Balancing as the object would now be completely balanced in the static condition (but not necessarily in dynamic).

A rigid rotor can be balanced at the two end planes and will stay in balance when in service. A flexible rotor will require multi-plane balancing. If a rotor is balanced on a low speed balancing

The principle of performing field balancing is to make (usually tempo­ rary) alterations to the mass distribu­ tion of the rotor, by adding trial masses, and to measure the resulting phase and magnitude of bearing vibra­ tion. The effects of these trial correc­ tions enable the amount and position of the required correction mass to be determined.

22/04/  · Rotors are a critical component used to convert electric or electromagnetic energy into rotational motion. For rotors to operate reliably, they must maintain even weight

The only way to assess the unbalance state is to add balance correction weights at various locations and using some calculation tool such as the influence.

Keywords: Balancing, rotor, vibration, influence coefficient, exact point graphical balancing procedure based on a linear rotor system.

Although rigid rotor balancing is a very simple and straightforward procedure, it cannot identify the projection of the imbalance on high speed flexible modes.