Vibration measurement of bearings, rolling bearing defects

Vibration should be measured on all bearings or the bearings of the equipment in the horizontal plane which passes through the rotational axis, in the directions (vertical, axial, lateral) as close as possible to the axis of rotation.

Measurement vibration bearings should be periodic in nature and depend on the state unit. If the vibration condition of the equipment is estimated at "good" ("excellent"), the measurements are carried out monthly if satisfactory, - twice a month. Periodic vibration measurement units need be performed under the same loads of the turbine, but they have to be half (minimum) of rated load.

It should be noted, that defects in the bearings are a common situation during operation industrial equipment. This element of the rotating mechanism most often of the nodes goes down. To identify the causes of the appearing of oscillations, it is recommended that vibration measurement of the bearing.

Methods vibration measurement quite a lot:

· Ultrasonic;

· The spectrum of the vibration signals;

· Spectrum envelope, and other.

Using these methods can early signs of fatigue of the bearing. The defect may be:

· The wear of the separator;

· Distortion of the outer or inner rings;

· Wear of rolling elements;

· Potholes;

· Chips;

· Defects of lubricant in the bearing;

· The crack in the depth of the node.

Measurement helps to determine the degree of bearing wear, but it must spend right, in horizontal (vertical) axis of rotation. Starting to rotate bearing with fixed speed and a certain load for a specific time period record the signals from the transducer. Having the information data is analyzed to establish the defects of the bearing, to get to know him the quality and condition in the study period.

Process vibration measurement of the bearing is necessary to carry out in dynamics. In still (push turning) the outer ring begins to rotate the inner ring. Constant speed depends on the size of the bearing and its design, but it must not exceed the nominal 1% and not be less than its more than 2%.

A simpler measurement process.

Using modern special devices called refrigerators, you can simplify vibration measurement of bearings. Using these devices, the level of vibration (as bearing) to quickly assess the status of the machine and accurately set the cause of the vibration. Experts repairmen can use the refrigerators to fast to obtain validation data of vibration in a short period of time to identify defects in bearings and to decide on their further operation.

Note that a method of testing defects in the bearings with refrigerators widely distribution.

Our the company develops and produces modern portable GPS navigators of a series of "VibroPoint"corresponding to ISO 10816. It can be noted vibroshock BALTECH VP-3405-2 vibration meter BALTECH VP-3410, vibrometer-balancer "PROTON-Balance-II" and device BALTECH VP-3450, allowing to diagnose the bearing condition of the lubricant and the bearing by Shock Pulses (MUI).

If you want training for your staff, we invite your employees in our licensing "Training the centre of excellence and training", where training courses on the rules of measurement of vibration with refrigerators and analyzers vibration (analysers). Then we will help to create your company the Department of diagnostic.

If you don't need a Department of diagnostics and want to trust us vibration measurement of bearings and other qualify work to your the services of our division of technical service (OTS) with their own devices.