d            D            B          Cr      Cor    Weight R6       9.525    22.225    5.558    2.57    1.36    0.0096 R8      12.700    28.575    6.35    5.11    2.39    0.0169 R10    15.875    34.925    7.14    6.00    3.25    0.0292 R12    10.050    41.275    7.938    9.38    5.03    0.0447 R14    22.225    47.625    9.525    10.06    5.85    0.0748 R16    50.800    9.525    12.700    10.06    5.85    0.0808 R18    28.575    53.975    12.700    13.23    8.30    0.0847 R20    31.750    57.150    9.525    13.23    8.30    0.0903 R22    34.925    63.500    11.112    16.21    10.42    0.1332 R24    38.100    66.675    11.112    17.03    11.70    0.1384 R20 ZZ-2RS Nonstandard Deep Groove Ball Bearing Features: 1. High quality through hardened bearing steel used for basic construction. 2. Optimized raceway geometry and super finishing. 3. High precision accuracy and manufacturing consistency. 4. Proprietary high performance sealing options. 5. Premium grease as lubrication system. We have multiple packages for shielded radial ball bearing R20-2RS  1.Industrial package: plastic tube + paper carton + wooden pallet craft paper + paper carton + wooden pallet 2.Individual package:individual paper box + paper carton + wooden pallet 3.As customer's demand