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）
7326AMDF车削铜保持器 130 280 58 445 585 35 DF pairing (P0, P6, P5 levels)
7326BMDF车削铜保持器 130 280 58 405 535 35.2 DF pairing (P0, P6, P5 levels)
7828AMDF车削铜保持器 140 175 18 77 130 1.9 DF pairing (P0, P6, P5 levels)
7828BMDF车削铜保持器 140 175 18 68 116 1.9 DF pairing (P0, P6, P5 levels)
7928ACMDF车削铜保持器 140 190 24 122 180 3.26 DF pairing (P0, P6, P5 levels)
7928AMDF车削铜保持器 140 190 24 117 173 3.84 DF pairing (P0, P6, P5 levels)
7928BMDF车削铜保持器 140 190 24 104 155 3.9 DF pairing (P0, P6, P5 levels)
7028AMDF车削铜保持器 140 210 33 194 265 7.8 DF pairing (P0, P6, P5 levels)
7028BMDF车削铜保持器 140 210 33 174 239 7.28 DF pairing (P0, P6, P5 levels)
7228AMDF车削铜保持器 140 250 42 355 470 17.84 DF pairing (P0, P6, P5 levels)
7228BMDF车削铜保持器 140 250 42 320 425 17.88 DF pairing (P0, P6, P5 levels)
7328CMDF车削铜保持器 140 300 62 573 802 37.6 DF pairing (P0, P6, P5 levels)
7328AMDF车削铜保持器 140 300 62 490 670 42.8 DF pairing (P0, P6, P5 levels)
7328BMDF车削铜保持器 140 300 62 445 615 43.2 DF pairing (P0, P6, P5 levels)
BA145-1ADF车削铜保持器 145 220 38 241 315 10.3 DF pairing (P0, P6, P5 levels)
7830AMDF车削铜保持器 150 190 20 87 149 2.64 DF pairing (P0, P6, P5 levels)
7830BMDF车削铜保持器 150 190 20 77 133 2.6 DF pairing (P0, P6, P5 levels)
7930ACMDF车削铜保持器 150 210 28 157 231 5.94 DF pairing (P0, P6, P5 levels)
7930AMDF车削铜保持器 150 210 28 150 222 5.98 DF pairing (P0, P6, P5 levels)
7930BMDF车削铜保持器 150 210 28 134 199 5.9 DF pairing (P0, P6, P5 levels)