R12 Small Inch Ball Bearing

The R12 Small Inch Ball Bearing, as an R-series miniature bearing, generally adopts a single-row radial structure; the conventional model uses 52100 chrome steel for rings and balls with ceramic versions available, matches PTFE or stainless steel cages, comes in various types like open, double metal shielded or double rubber sealed, has an inner diameter of 0.75 inches and an outer diameter of 1.625 inches, is compatible with grease or oil lubrication, features high rotational speed and good temperature resistance, suitable for scenarios such as BMX bikes and instruments

Technical parameter:

Miniature deep groove ball bearing:

There are many types of miniature deep groove ball bearings, including the metric 68 series, 69 series, 60 series, etc., as well as the British R series. In addition, different types of ‌ with ZZ steel dust cover, RS rubber seal ring and flange flange can be selected according to requirements.

The main materials are carbon steel, bearing steel, stainless steel, plastic, ceramic and so on. The choice of these materials directly affects the performance and service life of bearings. For example, bearing steel has good comprehensive mechanical properties and wear resistance, stainless steel is suitable for wet or corrosive environments, and ceramic materials are suitable for high temperature, high speed and high load occasions.