Single row deep groove ball bearings can accommodate radial and axial loads, and allows a high speed. Deep groove ball bearings are separable Min. Sealed deep groove ball bearings are maintenance-free, and can make the structure simplified. 1. With seals or shields bearing (2RS or ZZ) 2. With shields: Single-sided or double-sided iron shields. (ZZ) 3. With non-contact rubber seal ring: Non-contact seals on one or both sides. (Expressed as 2LS) 4. Band-contact rubber seal ring: Single-sided or double-sided contact-contact seal rings and inner ring. N: The outer ring with snap ring groove NR: Outer ring with snap ring grooves and snap rings. Deep groove ball bearings are used: Due to limited capacity of deep groove ball bearings are self-aligning, so you need good concentricity of the bearing SEAT, bad concentricity Affect the operation of the balance, increased bearing stresses to shorten bearing service life. Deep groove ball bearings allow only very Small deflection angle, this also depends on the load size. Source:sales-bearing.com
Source:
http://www.sales-bearing.com/news/The-Features-of-Deep-groove-ball-bearings-51.html