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）
7005BMDF车削铜保持器 25 47 12 16.6 13.4 0.182 DF pairing (P0, P6, P5 levels)
7205AMDF车削铜保持器 25 52 15 26.3 20.5 0.26 DF pairing (P0, P6, P5 levels)
7205BMDF车削铜保持器 25 52 15 24 18.8 0.266 DF pairing (P0, P6, P5 levels)
7305CMDF车削铜保持器 25 62 17 42.8 30.6 0.486 DF pairing (P0, P6, P5 levels)
7305AMDF车削铜保持器 25 62 17 43 31.5 0.47 DF pairing (P0, P6, P5 levels)
7305BMDF车削铜保持器 25 62 17 39.5 29.3 0.482 DF pairing (P0, P6, P5 levels)
7405AMDF车削铜保持器 25 80 21 64.5 46.3 1.054 DF pairing (P0, P6, P5 levels)
7405BMDF车削铜保持器 25 80 21 60 43 1.054 DF pairing (P0, P6, P5 levels)
7006AMDF车削铜保持器 30 55 13 23.6 20.2 0.232 DF pairing (P0, P6, P5 levels)
7006BMDF车削铜保持器 30 55 13 21.3 18.4 0.266 DF pairing (P0, P6, P5 levels)
7206AMDF车削铜保持器 30 62 16 36.5 29.5 0.394 DF pairing (P0, P6, P5 levels)
7206BMDF车削铜保持器 30 62 16 33.5 27 0.404 DF pairing (P0, P6, P5 levels)
7306CMDF车削铜保持器 30 72 19 52.5 40.5 0.724 DF pairing (P0, P6, P5 levels)
7306AMDF车削铜保持器 30 72 19 54.5 41.5 0.692 DF pairing (P0, P6, P5 levels)
7306BMDF车削铜保持器 30 72 19 50.5 38.5 0.708 DF pairing (P0, P6, P5 levels)
7406AMDF车削铜保持器 30 90 23 77.3 56.9 1.372 DF pairing (P0, P6, P5 levels)
7406BMDF车削铜保持器 30 90 23 71.8 52.8 1.372 DF pairing (P0, P6, P5 levels)
7007AMDF车削铜保持器 35 62 14 29.7 26.8 0.306 DF pairing (P0, P6, P5 levels)
7007BMDF车削铜保持器 35 62 14 25.7 22.8 0.34 DF pairing (P0, P6, P5 levels)
7207AMDF车削铜保持器 35 72 17 48.5 40 0.574 DF pairing (P0, P6, P5 levels)