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）
7348BMDF车削铜保持器 240 500 95 835 1600 183.8 DF pairing (P0, P6, P5 levels)
BA250-1ADF车削铜保持器 250 349.5 46 380 650 27.2 DF pairing (P0, P6, P5 levels)
7852AMDF车削铜保持器 260 320 28 185 380 9.38 DF pairing (P0, P6, P5 levels)
7852BMDF车削铜保持器 260 320 28 164 340 9.34 DF pairing (P0, P6, P5 levels)
7952AMDF车削铜保持器 260 360 46 375 660 28.6 DF pairing (P0, P6, P5 levels)
7952BMDF车削铜保持器 260 360 46 335 595 28.4 DF pairing (P0, P6, P5 levels)
BA260-4ADF车削铜保持器 260 369.5 46 395 695 31.4 DF pairing (P0, P6, P5 levels)
BT260-3BDF车削铜保持器 260 369.5 46 380 680 32.2 DF pairing (P0, P6, P5 levels)
BT260-1BDF车削铜保持器 260 369.5 46 380 680 31.4 DF pairing (P0, P6, P5 levels)
BT260-5BDF车削铜保持器 260 379.5 56 430 775 38.2 DF pairing (P0, P6, P5 levels)
7052AMDF车削铜保持器 260 400 65 565 1050 57.4 DF pairing (P0, P6, P5 levels)
7052BMDF车削铜保持器 260 400 65 505 945 58 DF pairing (P0, P6, P5 levels)
7252AMDF车削铜保持器 260 480 80 775 1500 130.6 DF pairing (P0, P6, P5 levels)
7252BMDF车削铜保持器 260 480 80 700 1360 131 DF pairing (P0, P6, P5 levels)
7352AMDF车削铜保持器 260 540 102 960 1920 230 DF pairing (P0, P6, P5 levels)
BA270-2ADF车削铜保持器 270 370 46 390 715 29.4 DF pairing (P0, P6, P5 levels)
7856AMDF车削铜保持器 280 350 33 234 465 14.16 DF pairing (P0, P6, P5 levels)
7856BMDF车削铜保持器 280 350 33 208 415 14.06 DF pairing (P0, P6, P5 levels)
7956AMDF车削铜保持器 280 380 46 400 745 30 DF pairing (P0, P6, P5 levels)
7956BMDF车削铜保持器 280 380 46 355 670 30 DF pairing (P0, P6, P5 levels)