Miniature deep groove ball bearings from ISO 9001:2008 certified import manufacturers. Miniature ball bearings made of rolling bearing steel are extremely cost-effective, can withstand very high loads and are suitable for temperatures from approx. -10 to +120 °C, with plastic seals permanently up to approx. +100 °C. The rolling bearing steel is wear-resistant, shock-resistant, conductive and magnetic.Replacement mark: 2RS = plastic cover plate on both sides is protected against splash water and dust. 2Z (ZZ) = metal cover plate on both sides is dust-protected.