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）
7006AWDF冲压钢保持器 30 55 13 23.6 20.2 0.232 DF pairing (P0, P6, P5 levels)
7006BWDF冲压钢保持器 30 55 13 21.3 18.4 0.266 DF pairing (P0, P6, P5 levels)
7206AWDF冲压钢保持器 30 62 16 36.5 29.5 0.394 DF pairing (P0, P6, P5 levels)
7206BWDF冲压钢保持器 30 62 16 33.5 27 0.404 DF pairing (P0, P6, P5 levels)
7306AWDF冲压钢保持器 30 72 19 54.5 41.5 0.692 DF pairing (P0, P6, P5 levels)
7306BWDF冲压钢保持器 30 72 19 50.5 38.5 0.708 DF pairing (P0, P6, P5 levels)
7406AWDF冲压钢保持器 30 90 23 77.3 56.9 1.372 DF pairing (P0, P6, P5 levels)
7406BWDF冲压钢保持器 30 90 23 71.8 52.8 1.372 DF pairing (P0, P6, P5 levels)
7007AWDF冲压钢保持器 35 62 14 29.7 26.8 0.306 DF pairing (P0, P6, P5 levels)
7007BWDF冲压钢保持器 35 62 14 25.7 22.8 0.34 DF pairing (P0, P6, P5 levels)
7207AWDF冲压钢保持器 35 72 17 48.5 40 0.574 DF pairing (P0, P6, P5 levels)
7207BWDF冲压钢保持器 35 72 17 44 36.5 0.588 DF pairing (P0, P6, P5 levels)
7307AWDF冲压钢保持器 35 80 21 65 52.5 0.928 DF pairing (P0, P6, P5 levels)
7307BWDF冲压钢保持器 35 80 21 59.5 48.5 0.948 DF pairing (P0, P6, P5 levels)
7407AWDF冲压钢保持器 35 100 25 98.2 73.9 1.9 DF pairing (P0, P6, P5 levels)
7407BWDF冲压钢保持器 35 100 25 91.3 68.6 1.9 DF pairing (P0, P6, P5 levels)
7008AWDF冲压钢保持器 40 68 15 31.5 31 0.38 DF pairing (P0, P6, P5 levels)
7008BWDF冲压钢保持器 40 68 15 27.4 26.4 0.42 DF pairing (P0, P6, P5 levels)
7208AWDF冲压钢保持器 40 80 18 57.5 50.5 0.75 DF pairing (P0, P6, P5 levels)
7208BWDF冲压钢保持器 40 80 18 52 46 0.766 DF pairing (P0, P6, P5 levels)