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）
7216AMDF车削铜保持器 80 140 26 145 152 2.92 DF pairing (P0, P6, P5 levels)
7216BMDF车削铜保持器 80 140 26 131 139 2.98 DF pairing (P0, P6, P5 levels)
7316CMDF车削铜保持器 80 170 39 242 233 7.7 DF pairing (P0, P6, P5 levels)
7316AMDF车削铜保持器 80 170 39 239 238 7.42 DF pairing (P0, P6, P5 levels)
7316BMDF车削铜保持器 80 170 39 219 218 7.58 DF pairing (P0, P6, P5 levels)
7416AMDF车削铜保持器 80 200 48 313 332 12 DF pairing (P0, P6, P5 levels)
7416BMDF车削铜保持器 80 200 48 290 307 12 DF pairing (P0, P6, P5 levels)
7017AMDF车削铜保持器 85 130 22 3.4 4.5 1.826 DF pairing (P0, P6, P5 levels)
7017BMDF车削铜保持器 85 130 22 79.3 96.7 1.94 DF pairing (P0, P6, P5 levels)
7217AMDF车削铜保持器 85 150 28 3 4.3 3.66 DF pairing (P0, P6, P5 levels)
7217BMDF车削铜保持器 85 150 28 2.2 3 3.74 DF pairing (P0, P6, P5 levels)
7317CMDF车削铜保持器 85 180 41 261 261 9.06 DF pairing (P0, P6, P5 levels)
7317AMDF车削铜保持器 85 180 41 2.2 2.8 8.66 DF pairing (P0, P6, P5 levels)
7317BMDF车削铜保持器 85 180 41 1.9 2.6 8.84 DF pairing (P0, P6, P5 levels)
7417AMDF车削铜保持器 85 210 52 331 360 17.08 DF pairing (P0, P6, P5 levels)
7417BMDF车削铜保持器 85 210 52 307 334 17.08 DF pairing (P0, P6, P5 levels)
7018AMDF车削铜保持器 90 140 24 3.2 4.3 2.38 DF pairing (P0, P6, P5 levels)
7018BMDF车削铜保持器 90 140 24 95 114 2.52 DF pairing (P0, P6, P5 levels)
7218AMDF车削铜保持器 90 160 30 2.8 4 4.5 DF pairing (P0, P6, P5 levels)
7218BMDF车削铜保持器 90 160 30 2 2.8 4.58 DF pairing (P0, P6, P5 levels)