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）
7013BTNDF尼龙保持器 65 100 18 48.9 56.6 0.94 DF pairing (P0, P6, P5 levels)
7213ATNDF尼龙保持器 65 120 23 114 116 2.06 DF pairing (P0, P6, P5 levels)
7213BTNDF尼龙保持器 65 120 23 103 105 2.1 DF pairing (P0, P6, P5 levels)
7313CTNDF尼龙保持器 65 140 33 182 161 4.44 DF pairing (P0, P6, P5 levels)
7313ATNDF尼龙保持器 65 140 33 180 164 4.24 DF pairing (P0, P6, P5 levels)
7313BTNDF尼龙保持器 65 140 33 166 151 4.34 DF pairing (P0, P6, P5 levels)
7413ATNDF尼龙保持器 65 160 37 226 209 6.82 DF pairing (P0, P6, P5 levels)
7413BTNDF尼龙保持器 65 160 37 209 194 6.82 DF pairing (P0, P6, P5 levels)
7814BTNDF尼龙保持器 70 90 10 32 34.6 0.182 DF pairing (P0, P6, P5 levels)
7914ACTNDF尼龙保持器 70 100 16 43 52.5 0.682 DF pairing (P0, P6, P5 levels)
7014ATNDF尼龙保持器 70 110 20 71.5 82.5 1.25 DF pairing (P0, P6, P5 levels)
7014BTNDF尼龙保持器 70 110 20 62.1 71.1 1.32 DF pairing (P0, P6, P5 levels)
7214ATNDF尼龙保持器 70 125 24 124 127 2.22 DF pairing (P0, P6, P5 levels)
7214BTNDF尼龙保持器 70 125 24 112 116 2.28 DF pairing (P0, P6, P5 levels)
7314CTNDF尼龙保持器 70 150 35 205 184 5.4 DF pairing (P0, P6, P5 levels)
7314ATNDF尼龙保持器 70 150 35 203 187 5.2 DF pairing (P0, P6, P5 levels)
7314BTNDF尼龙保持器 70 150 35 186 172 5.3 DF pairing (P0, P6, P5 levels)
7414ATNDF尼龙保持器 70 180 42 242 230 9.98 DF pairing (P0, P6, P5 levels)
7414BTNDF尼龙保持器 70 180 42 241 237 9.98 DF pairing (P0, P6, P5 levels)
7815BTNDF尼龙保持器 75 95 10 32.6 36 0.192 DF pairing (P0, P6, P5 levels)