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）
BA180-4ADF车削铜保持器 180 259.5 33 251 380 11.3 DF pairing (P0, P6, P5 levels)
BA180-2ADF车削铜保持器 180 259.5 33 290 420 11.5 DF pairing (P0, P6, P5 levels)
7036AMDF车削铜保持器 180 280 46 335 505 21 DF pairing (P0, P6, P5 levels)
7036BMDF车削铜保持器 180 280 46 300 455 20.4 DF pairing (P0, P6, P5 levels)
7236AMDF车削铜保持器 180 320 52 495 770 36.2 DF pairing (P0, P6, P5 levels)
7236BMDF车削铜保持器 180 320 52 450 700 36.8 DF pairing (P0, P6, P5 levels)
7336AMDF车削铜保持器 180 380 75 665 1070 84.2 DF pairing (P0, P6, P5 levels)
7336BMDF车削铜保持器 180 380 75 605 975 85.2 DF pairing (P0, P6, P5 levels)
7838AMDF车削铜保持器 190 240 24 133 240 4.94 DF pairing (P0, P6, P5 levels)
7838BMDF车削铜保持器 190 240 24 118 214 4.94 DF pairing (P0, P6, P5 levels)
BA190-3ADF车削铜保持器 190 259.5 33 216 335 10.2 DF pairing (P0, P6, P5 levels)
7938CMDF车削铜保持器 190 260 33 239 385 9.96 DF pairing (P0, P6, P5 levels)
7938AMDF车削铜保持器 190 260 33 216 350 10.04 DF pairing (P0, P6, P5 levels)
7938BMDF车削铜保持器 190 260 33 192 315 10.14 DF pairing (P0, P6, P5 levels)
BA190-1ADF车削铜保持器 190 269.5 33 215 335 11.9 DF pairing (P0, P6, P5 levels)
7038AMDF车削铜保持器 190 290 46 365 560 22.6 DF pairing (P0, P6, P5 levels)
7038BMDF车削铜保持器 190 290 46 325 505 21.6 DF pairing (P0, P6, P5 levels)
7238AMDF车削铜保持器 190 340 55 510 825 44.8 DF pairing (P0, P6, P5 levels)
7238BMDF车削铜保持器 190 340 55 460 750 45 DF pairing (P0, P6, P5 levels)
7338AMDF车削铜保持器 190 400 78 730 1200 95 DF pairing (P0, P6, P5 levels)