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）
78/850AMDF车削铜保持器 850 1030 82 1420 3880 246 DF pairing (P0, P6, P5 levels)
78/900AMDF车削铜保持器 900 1090 85 1540 4360 320.44 DF pairing (P0, P6, P5 levels)
78/950AMDF车削铜保持器 950 1150 90 1660 4860 336 DF pairing (P0, P6, P5 levels)
78/1000AMDF车削铜保持器 1000 1220 100 1880 5700 484 DF pairing (P0, P6, P5 levels)
BA1000-1ADF车削铜保持器 1000 1420 130 2340 9250 1308 DF pairing (P0, P6, P5 levels)
78/1060AMDF车削铜保持器 1060 1280 100 1430 5350 510 DF pairing (P0, P6, P5 levels)
78/1120AMDF车削铜保持器 1120 1360 106 2160 7000 624 DF pairing (P0, P6, P5 levels)
78/1400AMDF车削铜保持器 1400 1700 132 3080 11400 1206 DF pairing (P0, P6, P5 levels)
78/1500AMDF车削铜保持器 1500 1820 140 3280 12600 1472 DF pairing (P0, P6, P5 levels)