6208

6208 is a numeric designation used in several contexts, but it is most widely known as a standard bearing size in the 6200 series of deep groove ball bearings. In this bearing family, 6208 denotes a bearing with a bore diameter of 40 millimeters, an outer diameter of 80 millimeters, and a width of 18 millimeters. This size is common in various mechanical and industrial applications, valued for its balance of speed capability and load capacity.

Variants of the 6208 bearing are commonly encountered in catalogs. The suffixes indicate seal or shield configurations: for example, 6208-2RS or 6208-2RS1 denotes two rubber seals (one on each side), 6208-Z or 6208-ZZ indicates shields (metal shields) on one or both sides, respectively. The choice of seal or shield affects lubrication retention and environmental protection, as well as friction characteristics.

Common applications for 6208 bearings include electric motors, pumps, conveyors, gearboxes, household appliances, and automotive components. They are selected for moderate radial loads, high-speed operation, and broad availability from multiple manufacturers, such as SKF, NSK, Timken, and other bearing suppliers. As with other bearings, performance depends on proper mounting, lubrication, and alignment to prevent premature wear or failure.

In summary, 6208 most often identifies a widely used 40x80x18 mm deep groove ball bearing, with several seal or shield variants to suit different operating conditions. It is a standard component in many mechanical systems and a staple in bearing catalogs.