On modern front- and four-wheel drive cars, wheel bearings are a set of permanently sealed, precisely machined steel ball or straight roller bearings. The balls, or rollers, are encased in a "cage ...

It also offers drives, belts, chains ... spherical, and cylindrical roller bearings, plain bearings, metal-polymer bearings and rod end bearings, thrust and specialty ball bearings, and housed ...

USA, describes how drum motors offer a solution to many traditional conveyor drive issues faced by the mining industry ...