The lineup of NSK bearings for mining machinery are manufactured using NSK's proprietary technologies in order to provide long-life performance even under the harsh conditions found in and around the digging area.Construction equipment used in harsh environments risk contamination from dust, mud, and huge loads, and require a certain degree of ruggedness that is different from the requirements of a common passenger vehicle. NSK has developed bearings for such equipment. These bearings provide long life and higher limiting speeds exceeding that of conventional bearings.