The industry of wheels turn on bearings, so why do the wheels often vibrate, clatter, squeak, drag and overheat? Bearings can fail for lots of reasons. Most failures (as shown in Figure 1) are related to lubrication and contamination, but myths and misconceptions handed fromwheel bearings, one generation of maintenance engineers to the next help perpetuate many easily avoidable problems. These myths fall into three general areas of bearing use: installation, misapplication and lubrication. CLICK TO LEARN MORE … http://www.bearing-news.com/are-bearings-making-you-spin-your-wheels/