Ningbo DEMY (D & M) Bearings Co., Ltd is one of the leading manufacturers of ball bearings, roller bearings, and other types of bearings. We are also an exporter and distributor of a variety of belts, chains, auto parts and hardware spare parts, etc.
Ball bearings and roller bearings are rolling-element bearings used for supporting loads, both axial and radial. They are a necessity in almost every industry. For example, deep groove ball bearings are used to reduce rotational friction in gearboxes, electrical motors, and in textile industries, while angular contact ball bearings and tapered roller bearings are regularly used in machine tool spindles, wheel hubs of vehicles, and more.