Deep groove ball bearings are highly versatile, self-retaining ball bearings with solid inner and outer rings and balls.
These machine elements are robust in application and easy to maintain and available in single and double row designs. Due to their low frictional torque, they are suitable for high revolutions.
Deep groove ball bearings with the suffix 2 Z have gap seals on both sides. They are suitable for high revolutions. Bearings with the suffix 2 RS are fitted with NBR lip seals on both sides and are suitable for medium speeds. Bearings with the suffix 2 RU have the same friction behaviour as the 2 Z seals. When the inner ring is stationary and the outer is rotating, however, the grease loss is less than in the case of 2 Z seals.
The material is generally a full-hardened, low-alloy chromium steel with high purity (100 CR 6).
For ball bearings in corrosive environments, non-corrosive steels are available. The steels used as standard and proven in practice are: X 65 CR 13, X 102 CR MO 17, X 105 CR MO. These steels have satisfactory corrosion resistance in many media.
For special applications, special steels or special coatings are available.