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）
7872BTNDF尼龙保持器 360 440 38 315 680 23.4 DF pairing (P0, P6, P5 levels)
7972ATNDF尼龙保持器 360 480 56 540 1180 55.8 DF pairing (P0, P6, P5 levels)
7972BTNDF尼龙保持器 360 480 56 480 1060 55.8 DF pairing (P0, P6, P5 levels)
7072ATNDF尼龙保持器 360 540 82 865 1920 124.8 DF pairing (P0, P6, P5 levels)
7072BTNDF尼龙保持器 360 540 82 775 1730 127.2 DF pairing (P0, P6, P5 levels)
7272ATNDF尼龙保持器 360 650 95 1090 2550 288 DF pairing (P0, P6, P5 levels)
7272BTNDF尼龙保持器 360 650 95 975 2310 280 DF pairing (P0, P6, P5 levels)
7876ATNDF尼龙保持器 380 480 46 455 955 39 DF pairing (P0, P6, P5 levels)
7976ATNDF尼龙保持器 380 520 65 635 1450 79.6 DF pairing (P0, P6, P5 levels)
7976BTNDF尼龙保持器 380 520 65 565 1300 81.4 DF pairing (P0, P6, P5 levels)
7076ATNDF尼龙保持器 380 560 82 800 1750 135.8 DF pairing (P0, P6, P5 levels)
7076BTNDF尼龙保持器 380 560 82 720 1580 133.4 DF pairing (P0, P6, P5 levels)
7880ATNDF尼龙保持器 400 500 46 465 1000 40.8 DF pairing (P0, P6, P5 levels)
7980ATNDF尼龙保持器 400 540 65 640 1500 84.2 DF pairing (P0, P6, P5 levels)
7980BTNDF尼龙保持器 400 540 65 570 1350 84.6 DF pairing (P0, P6, P5 levels)
7080ATNDF尼龙保持器 400 600 90 905 2030 171.8 DF pairing (P0, P6, P5 levels)
7080BTNDF尼龙保持器 400 600 90 810 1830 172.4 DF pairing (P0, P6, P5 levels)
7884ATNDF尼龙保持器 420 520 46 505 1110 42.2 DF pairing (P0, P6, P5 levels)
7984ATNDF尼龙保持器 420 560 65 665 1610 88 DF pairing (P0, P6, P5 levels)
7984BTNDF尼龙保持器 420 560 65 590 1440 88.8 DF pairing (P0, P6, P5 levels)