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）
7230BTNDF尼龙保持器 150 270 45 365 510 22.4 DF pairing (P0, P6, P5 levels)
7330CTNDF尼龙保持器 150 320 65 607 891 44.8 DF pairing (P0, P6, P5 levels)
7330ATNDF尼龙保持器 150 320 65 515 745 52 DF pairing (P0, P6, P5 levels)
7330BTNDF尼龙保持器 150 320 65 470 680 51.8 DF pairing (P0, P6, P5 levels)
7832ATNDF尼龙保持器 160 200 20 89 159 2.78 DF pairing (P0, P6, P5 levels)
7832BTNDF尼龙保持器 160 200 20 79 142 2.76 DF pairing (P0, P6, P5 levels)
7932CTNDF尼龙保持器 160 220 28 173 265 6.2 DF pairing (P0, P6, P5 levels)
7932ATNDF尼龙保持器 160 220 28 156 241 6.22 DF pairing (P0, P6, P5 levels)
7932BTNDF尼龙保持器 160 220 28 139 216 6.22 DF pairing (P0, P6, P5 levels)
7032ATNDF尼龙保持器 160 240 38 252 355 11.54 DF pairing (P0, P6, P5 levels)
7032BTNDF尼龙保持器 160 240 38 225 320 10.9 DF pairing (P0, P6, P5 levels)
7232ATNDF尼龙保持器 160 290 48 425 615 28.2 DF pairing (P0, P6, P5 levels)
7232BTNDF尼龙保持器 160 290 48 385 555 28.4 DF pairing (P0, P6, P5 levels)
7332CTNDF尼龙保持器 160 340 68 640 980 52.8 DF pairing (P0, P6, P5 levels)
7332ATNDF尼龙保持器 160 340 68 565 845 61.4 DF pairing (P0, P6, P5 levels)
7332BTNDF尼龙保持器 160 340 68 515 770 61.6 DF pairing (P0, P6, P5 levels)
7834ATNDF尼龙保持器 170 215 22 109 192 3.7 DF pairing (P0, P6, P5 levels)
7834BTNDF尼龙保持器 170 215 22 96.5 171 3.66 DF pairing (P0, P6, P5 levels)
7934CTNDF尼龙保持器 170 230 28 183 297 6.72 DF pairing (P0, P6, P5 levels)
7934ATNDF尼龙保持器 170 230 28 165 269 6.78 DF pairing (P0, P6, P5 levels)