Any rotating machinery will always have some degree of vibration. While some degrees of vibration may be acceptable, the primary objective of any rotating equipment is to run with as minimal vibration as possible to prevent damage and ultimately increase the machine’s lifespan. Instead of attempting to eliminate vibration, it is crucial to look for machinery balance to reduce vibration to the point where there is less noise.
A unit must undergo a complicated balancing process to rotate in its bearings without being affected by unbalanced centrifugal forces. The machine will function correctly and in the most effective way when it is in balance. In contrast, an imbalanced machine risks breaking down and becoming inefficient over time.
Two primary forms of balancing can be done for your machinery: static and dynamic. Static or dynamic balancing minimizes vibration and lowers noise levels produced by a machine while also extending the machine’s life. But the major issue here is: What’s the difference?
A machine’s center of gravity is found in the axis of rotation when it is balanced statically. This procedure suggests that it will be stationary without brake pressure at the horizontal axis. Even if the rotor is not spinning, the imbalance will still exist.
The component is positioned using low friction bearings so that the portion that weighs the most is at the bottom. After that, the technician cleans up the lowest part (heavy side). Alternately, they add to the top (light side) until the rotation is on a proper axis. This procedure is repeated until the heavy point is gone and the rotor no longer revolves on its own.
Dynamic balancing entails changing an object’s equilibrium by adding or withdrawing weight. First, the technician must identify the unbalanced components, and they calculate this while it is rotating at a set speed. Information obtained through this approach sheds light on how much weight is necessary to balance out either too light or too heavy sections.
Dynamic balancing, which lowers vibration, also promotes the machine’s quieter operation, which inevitably prevents early system collapse. The component is only considered to be in balance when there is no centrifugal force or pair unbalance due to rotation,
What varieties of dynamic balancing are there?
Dynamic balancing can be done on parts of all different sizes and forms. Small disks with a width of less than 30% of the diameter are typically used for single plane dynamic balancing.
When a component is spinning faster, and the width exceeds 30% of the diameter, multi-plane dynamic balancing (multi-plane) is typically used. A technician may use more than two correction positions to balance long, high-speed rotors, including flexible ones.
The bottom line
Eradicate frequent performance issues with your machinery by balancing it, whether static or dynamic. Vibration, noise, and heat are a few of these issues, and doing away with them will increase the system’s lifespan and precision and delay system failure. Dynamic balancing has the advantage of being able to balance objects precisely, which makes it the preferable method, especially for high-performance components.