Roller bearing measurement
Patented solutions:
● For quality assurance of bearings,
● inspection of bearings in machines in the test bench
● and for condition monitoring in plants
Our solution for your bearings
Detect the causes of bearing damage or use our solutions for the quality assurance of your rolling bearings. With the BestSens-SAW technology, we offer you a unique opportunity to measure the operating behaviour of bearings in machines online.
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HOW DO I BENEFIT FROM IT?
Active condition monitoring instead of passive damage limitation
BeMoS enables them to actively look inside their bearing instead of just passively listening from the outside. This allows you to identify malfunctions before they cause any damage. To give your bearing a long life, BeMoS uses one of the effects of sound transmission in solids.
HOW DOES IT WORK?
BeMoS transmits sound pulses. Thousands of them. Every second.
Every single sound pulse collects important information on its way across the bearing: Is a rolling element just passing by? Is there sufficient lubricant on the bearing raceway? Is there even contact between the roller and the bearing raceway?
How does this work?
The sound generated propagates on the bearing ring in the form of surface acoustic waves (SAW). These waves are influenced by their boundary conditions. Tensions in the material and adjacent media, such as those caused by passing rolling elements, change the speed and dampen the sound. Conversely, the properties of the sound transmission can be used to draw conclusions about the boundary conditions.
Further information can be derived from the multitude of impulses:
How fast is the cage rotating?
What load does the bearing have to withstand right now?
Is there any slip?
Overload can quickly damage a bearing. Excessive stresses in the contact zone between the rolling element and the rtaceway cause the material to fatigue and lead to breakouts in the tracks and rolling elements (pitting). The high pressures and temperatures that occur in the rolling contact also cause the lubricant to age more quickly. An overload of the bearing can be recognised by the characteristic values that BeMoS one generates from the transmitted sound pulses.
But a load that is too low can also damage a bearing. If the load falls below a minimum, slippage can easily occur. The rolling elements then no longer roll over the raceway, but slide on it. This leads to increased friction in the rolling contact and thus to damage to raceways and rolling elements. Such damage is often detected too late. Only when the bearing is loaded again does the pre-damage lead to failure in a very short time. With BeMoS one, you can detect slip and take countermeasures already during design, but also later during operation.
Based on the cage speed and the geometry of the bearing, the contact angle can be calculated. With BeMoS one, this can even be done so precisely that the system can be used for quality assurance in bearing production. However, knowing the contact angle is also an advantage in the operation of rotating machines, such as pumps. The pressure angle can be used to determine the load that is currently acting on the bearing. In this way, you can find the optimum operating point for your machine in order to achieve the longest possible service life.
Example applications
Measure axial thrust
The running time of centrifugal pumps depends significantly on the load on the bearings. With the BestSens AG measuring method, the axial forces can be recorded during operation, service intervals can be extended and the operating conditions can be optimised in terms of running time.
Our expertise in rolling bearings is highly appreciated at conferences and among experts.
VDI Expert Conference Damage Mechanisms on Bearings
Since 2012, BestSens has been an integral part of the VDI conference on bearing damage mechanisms as a speaker or participant. Through regular exchange with leading experts from the bearing industry, mechanical engineering and lubricant manufacturers, our solutions are geared to the needs of the market and are continuously developed further.
Wälzlagerdiagnose an Maschinensätzen (Springer Vieweg Verlag)
The leading expert in condition monitoring, Dieter Franke, has included BestSens technology in the standard work for the diagnosis and monitoring of rolling bearing faults and damage. In chapter 12.3.1 under the heading “Expanding the methodology of rolling bearing diagnosis”, Dieter Franke describes the possibilities of BestSens technology. The new edition is published by Springer Vieweg Verlag in 2022.
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