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）
7028AWDF冲压钢保持器 140 210 33 194 265 7.8 DF pairing (P0, P6, P5 levels)
7028BWDF冲压钢保持器 140 210 33 174 239 7.28 DF pairing (P0, P6, P5 levels)
7228AWDF冲压钢保持器 140 250 42 355 470 17.84 DF pairing (P0, P6, P5 levels)
7228BWDF冲压钢保持器 140 250 42 320 425 17.88 DF pairing (P0, P6, P5 levels)
7328AWDF冲压钢保持器 140 300 62 490 670 42.8 DF pairing (P0, P6, P5 levels)
7328BWDF冲压钢保持器 140 300 62 445 615 43.2 DF pairing (P0, P6, P5 levels)
7030AWDF冲压钢保持器 150 225 35 222 305 9.5 DF pairing (P0, P6, P5 levels)
7030BWDF冲压钢保持器 150 225 35 199 277 8.86 DF pairing (P0, P6, P5 levels)
7230AWDF冲压钢保持器 150 270 45 405 560 22.4 DF pairing (P0, P6, P5 levels)
7230BWDF冲压钢保持器 150 270 45 365 510 22.4 DF pairing (P0, P6, P5 levels)
7330AWDF冲压钢保持器 150 320 65 515 745 52 DF pairing (P0, P6, P5 levels)
7330BWDF冲压钢保持器 150 320 65 470 680 51.8 DF pairing (P0, P6, P5 levels)
7032AWDF冲压钢保持器 160 240 38 252 355 11.54 DF pairing (P0, P6, P5 levels)
7032BWDF冲压钢保持器 160 240 38 225 320 10.9 DF pairing (P0, P6, P5 levels)
7232AWDF冲压钢保持器 160 290 48 425 615 28.2 DF pairing (P0, P6, P5 levels)
7232BWDF冲压钢保持器 160 290 48 385 555 28.4 DF pairing (P0, P6, P5 levels)
7332AWDF冲压钢保持器 160 340 68 565 845 61.4 DF pairing (P0, P6, P5 levels)
7332BWDF冲压钢保持器 160 340 68 515 770 61.6 DF pairing (P0, P6, P5 levels)
7034AWDF冲压钢保持器 170 260 42 300 430 15.8 DF pairing (P0, P6, P5 levels)
7034BWDF冲压钢保持器 170 260 42 270 385 15.54 DF pairing (P0, P6, P5 levels)