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）
7302CMDF车削铜保持器 15 42 13 21.7 13.7 0.17 DF pairing (P0, P6, P5 levels)
7302AMDF车削铜保持器 15 42 13 21.8 14.2 0.168 DF pairing (P0, P6, P5 levels)
7302BMDF车削铜保持器 15 42 13 20.2 13.2 0.172 DF pairing (P0, P6, P5 levels)
7003AMDF车削铜保持器 17 35 10 10.4 7.65 0.08 DF pairing (P0, P6, P5 levels)
7003BMDF车削铜保持器 17 35 10 9.9 7.5 0.09 DF pairing (P0, P6, P5 levels)
7203AMDF车削铜保持器 17 40 12 17.6 12 0.134 DF pairing (P0, P6, P5 levels)
7203BMDF车削铜保持器 17 40 12 16.1 11 0.136 DF pairing (P0, P6, P5 levels)
7303CMDF车削铜保持器 17 47 14 25.7 16.8 0.24 DF pairing (P0, P6, P5 levels)
7303AMDF车削铜保持器 17 47 14 25.9 17.3 0.232 DF pairing (P0, P6, P5 levels)
7303BMDF车削铜保持器 17 47 14 24 16 0.236 DF pairing (P0, P6, P5 levels)
7004AMDF车削铜保持器 20 42 12 17.6 13.2 0.136 DF pairing (P0, P6, P5 levels)
7004BMDF车削铜保持器 20 42 12 15.2 11.1 0.158 DF pairing (P0, P6, P5 levels)
7204AMDF车削铜保持器 20 47 14 23.5 16.6 0.212 DF pairing (P0, P6, P5 levels)
7204BMDF车削铜保持器 20 47 14 21.6 15.3 0.218 DF pairing (P0, P6, P5 levels)
7304CMDF车削铜保持器 20 52 15 30.1 19.9 0.3 DF pairing (P0, P6, P5 levels)
7304AMDF车削铜保持器 20 52 15 30.5 20.8 0.292 DF pairing (P0, P6, P5 levels)
7304BMDF车削铜保持器 20 52 15 28.2 19.3 0.3 DF pairing (P0, P6, P5 levels)
7404AMDF车削铜保持器 20 72 19 57.8 38.2 0.79 DF pairing (P0, P6, P5 levels)
7404BMDF车削铜保持器 20 72 19 54.4 35.9 0.79 DF pairing (P0, P6, P5 levels)
7005AMDF车削铜保持器 25 47 12 18.3 14.8 0.158 DF pairing (P0, P6, P5 levels)