DF pairing (P0, P6, P5 levels)

DF pairing is one of the three classic paired installation methods for angular contact ball bearings, with the full name Double Face to Face and code DF. The core is to install two angular contact ball bearings of the same specification with the narrow outer edge facing each other and the wide inner edge facing each other, with the contact angle centerline converging towards the inside of the bearing to form an "inner eight" layout. It is suitable for radial loads and bidirectional axial loads, with small shaft span and high concentricity requirements. It is a commonly used choice for compact shaft systems such as pump valves, motor end caps, and small spindles, and can be adapted to a full range of angular contact ball bearings such as 7000C/AC/B and AC7000 full ceramic types.

Model Basic Dimensions Basic rated dynamic load WeightType
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
7011AWDF冲压钢保持器 55 90 18 52.5 55.5 0.782 DF pairing (P0, P6, P5 levels)
7011BWDF冲压钢保持器 55 90 18 45.4 47.5 0.84 DF pairing (P0, P6, P5 levels)
7211AWDF冲压钢保持器 55 100 21 83 79 1.226 DF pairing (P0, P6, P5 levels)
7211BWDF冲压钢保持器 55 100 21 75 72 1.254 DF pairing (P0, P6, P5 levels)
7311AWDF冲压钢保持器 55 120 29 139 123 2.82 DF pairing (P0, P6, P5 levels)
7311BWDF冲压钢保持器 55 120 29 128 113 2.9 DF pairing (P0, P6, P5 levels)
7411AWDF冲压钢保持器 55 140 33 192 165 4.72 DF pairing (P0, P6, P5 levels)
7411BWDF冲压钢保持器 55 140 33 179 153 4.72 DF pairing (P0, P6, P5 levels)
7012AWDF冲压钢保持器 60 95 18 53.5 59 0.834 DF pairing (P0, P6, P5 levels)
7012BWDF冲压钢保持器 60 95 18 46.4 50.7 0.9 DF pairing (P0, P6, P5 levels)
7212AWDF冲压钢保持器 60 110 22 100 97.5 1.596 DF pairing (P0, P6, P5 levels)
7212BWDF冲压钢保持器 60 110 22 91 89 1.63 DF pairing (P0, P6, P5 levels)
7312AWDF冲压钢保持器 60 130 31 159 143 3.48 DF pairing (P0, P6, P5 levels)
7312BWDF冲压钢保持器 60 130 31 146 131 3.56 DF pairing (P0, P6, P5 levels)
7412AWDF冲压钢保持器 60 150 35 209 187 5.7 DF pairing (P0, P6, P5 levels)
7412BWDF冲压钢保持器 60 150 35 194 173 5.7 DF pairing (P0, P6, P5 levels)
7013AWDF冲压钢保持器 65 100 18 56.5 65.5 0.91 DF pairing (P0, P6, P5 levels)
7013BWDF冲压钢保持器 65 100 18 48.9 56.6 0.94 DF pairing (P0, P6, P5 levels)
7213AWDF冲压钢保持器 65 120 23 114 116 2.06 DF pairing (P0, P6, P5 levels)
7213BWDF冲压钢保持器 65 120 23 103 105 2.1 DF pairing (P0, P6, P5 levels)