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）
BA280-4ADF车削铜保持器 280 389.5 46 405 745 32 DF pairing (P0, P6, P5 levels)
BT280-1BDF车削铜保持器 280 389.5 46 360 650 32 DF pairing (P0, P6, P5 levels)
7056AMDF车削铜保持器 280 420 65 560 1060 62.4 DF pairing (P0, P6, P5 levels)
7056BMDF车削铜保持器 280 420 65 530 1040 62 DF pairing (P0, P6, P5 levels)
7256AMDF车削铜保持器 280 500 80 830 1690 138 DF pairing (P0, P6, P5 levels)
7256BMDF车削铜保持器 280 500 80 745 1530 140.2 DF pairing (P0, P6, P5 levels)
7356AMDF车削铜保持器 280 580 108 1080 2270 280 DF pairing (P0, P6, P5 levels)
BT285-1BDF车削铜保持器 285 380 46 335 605 29.4 DF pairing (P0, P6, P5 levels)
7860AMDF车削铜保持器 300 380 38 297 580 20.2 DF pairing (P0, P6, P5 levels)
7860BMDF车削铜保持器 300 380 38 295 570 19.82 DF pairing (P0, P6, P5 levels)
7960AMDF车削铜保持器 300 420 56 510 1000 48.8 DF pairing (P0, P6, P5 levels)
7960BMDF车削铜保持器 300 420 56 455 900 47.4 DF pairing (P0, P6, P5 levels)
7060AMDF车削铜保持器 300 460 74 625 1210 89.8 DF pairing (P0, P6, P5 levels)
7060BMDF车削铜保持器 300 460 74 560 1090 89 DF pairing (P0, P6, P5 levels)
7864AMDF车削铜保持器 320 400 38 310 635 21 DF pairing (P0, P6, P5 levels)
7864BMDF车削铜保持器 320 400 38 274 565 21 DF pairing (P0, P6, P5 levels)
7964AMDF车削铜保持器 320 440 56 515 1050 51.8 DF pairing (P0, P6, P5 levels)
7964BMDF车削铜保持器 320 440 56 460 940 50.6 DF pairing (P0, P6, P5 levels)
7064AMDF车削铜保持器 320 480 74 755 1590 94.4 DF pairing (P0, P6, P5 levels)
7064BMDF车削铜保持器 320 480 74 675 1430 93.8 DF pairing (P0, P6, P5 levels)