Roundness measurement is critical for many applications. It can be measured in several different ways, ranging from simple caliper measurements to high-precision, dedicated roundness measurement systems. In this article...

Abrasive wear is the loss of material due to sliding in the presence of hard particles, when a hard surface or particle slides over another surface and removes material from that surface by cutting or furrowing action. Some degree of surface darkening occurs as a result of wear...

Bearing is the important support of mechanical transmission mechanism, directly affecting the technical level and quality performance of equipment, known as the ‘joints of industry’. At present, wind turbine bearings...

Foreign countries on the above several test methods are used, but the application of different purposes, for example, the development of a new product, the first to do the friction wear test. But if the form of friction and...