VIBRATION MONITORING PRACTICE OF ROLLING BEARINGS

Vibration Monitoring Practice of Rolling Bearings



Vibration Monitoring Practice of Rolling Bearings

Introduction

Roller bearings are used in industry all over the world and they are considered to be an essential part. These are used in placing goods so that they can be transported from one place to another. These equipments have less friction and sliding. There are different types of roller bearings; the difference between in each part is its diameter. There are other types which are spherical, ball, needle, tapered and cylindrical. Each of these bearings is designed for a special purpose. The vibration monitoring practice of rolling bearings is a process which analyses vibration emitted out by the bearings, this is a process which is used for identifying faults in the bearings. This paper will discuss how to discover faults by monitoring its vibration spectrum.

Roller bearing breakdown is the most commonly known fault roller bearing. When a fault is found, it is better to shut down the machine as quickly as possible to avoid any further major damages. Taking such measures can cause a lot of inconvenience as you may lose time and suffer economic losses. Therefore it is advised to continuously monitor the roller bearing so that you are aware of its condition; this will help you avoid any major damages. To analyze the defects in bearings a vibration method is used. This will help identify any problems before they occur. Measurements of vibration are taken at every end on the engine and rotation bearing to identify the problems if any. Investigation of the Time domain and vibration spectrum is used to identify defects in bearings. It is observed that each of the above mentioned method is useful for the detection of the faults. (Henderson, Priest, 2006. Pp. 28-31).

Electric analysis is also used to observe the vibration signature components in rotating machinery. This gives you the understanding how the machine works. Forty percent failures of electrical motors are caused by overuse and constant friction of the bearing. Mostly defects are caused by bearings in rolling elements. Comprehensive overview of the bearing defect can be observed by vibration frequencies at rotational speed (Lind 2003, pg.9-76). The faults are usually occurred in areas like inner race, outer race and rolling elements. These produce high cost and are exhausted because of improper defect calculations from equations. The roller bearing defects are fragmented and distributed. These defects are comprised of chinks, pits and spalls which are caused and friction on the rotating surface. The fragmented fault comprises of surface coarseness, waviness, and uneven races, inner face fault frequency and off-size rotation materials. These are caused by manufacturing fault or cheap raw materials.

The analysis of vibration has been acknowledged as one of the most helpful supervising techniques. It is very helpful when observing rotating appliances, where vibration initiated by components for example looseness, misalignment unbalance; eccentricity and it's response to an external force can bring unforeseen failures. One of the most widespread components observed by vibration in ...