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）
7411AMDF车削铜保持器 55 140 33 192 165 4.72 DF pairing (P0, P6, P5 levels)
7411BMDF车削铜保持器 55 140 33 179 153 4.72 DF pairing (P0, P6, P5 levels)
7012AMDF车削铜保持器 60 95 18 53.5 59 0.834 DF pairing (P0, P6, P5 levels)
7012BMDF车削铜保持器 60 95 18 46.4 50.7 0.9 DF pairing (P0, P6, P5 levels)
7212AMDF车削铜保持器 60 110 22 100 97.5 1.596 DF pairing (P0, P6, P5 levels)
7212BMDF车削铜保持器 60 110 22 91 89 1.63 DF pairing (P0, P6, P5 levels)
7312CMDF车削铜保持器 60 130 31 161 141 3.62 DF pairing (P0, P6, P5 levels)
7312AMDF车削铜保持器 60 130 31 159 143 3.48 DF pairing (P0, P6, P5 levels)
7312BMDF车削铜保持器 60 130 31 146 131 3.56 DF pairing (P0, P6, P5 levels)
7412AMDF车削铜保持器 60 150 35 209 187 5.7 DF pairing (P0, P6, P5 levels)
7412BMDF车削铜保持器 60 150 35 194 173 5.7 DF pairing (P0, P6, P5 levels)
7013AMDF车削铜保持器 65 100 18 56.5 65.5 0.91 DF pairing (P0, P6, P5 levels)
7013BMDF车削铜保持器 65 100 18 48.9 56.6 0.94 DF pairing (P0, P6, P5 levels)
7213AMDF车削铜保持器 65 120 23 114 116 2.06 DF pairing (P0, P6, P5 levels)
7213BMDF车削铜保持器 65 120 23 103 105 2.1 DF pairing (P0, P6, P5 levels)
7313CMDF车削铜保持器 65 140 33 182 161 4.44 DF pairing (P0, P6, P5 levels)
7313AMDF车削铜保持器 65 140 33 180 164 4.24 DF pairing (P0, P6, P5 levels)
7313BMDF车削铜保持器 65 140 33 166 151 4.34 DF pairing (P0, P6, P5 levels)
7413AMDF车削铜保持器 65 160 37 226 209 6.82 DF pairing (P0, P6, P5 levels)
7413BMDF车削铜保持器 65 160 37 209 194 6.82 DF pairing (P0, P6, P5 levels)