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）
7934BTNDF尼龙保持器 170 230 28 147 241 6.72 DF pairing (P0, P6, P5 levels)
7034ATNDF尼龙保持器 170 260 42 300 430 15.8 DF pairing (P0, P6, P5 levels)
7034BTNDF尼龙保持器 170 260 42 270 385 15.54 DF pairing (P0, P6, P5 levels)
7234ATNDF尼龙保持器 170 310 52 480 715 34.6 DF pairing (P0, P6, P5 levels)
7234BTNDF尼龙保持器 170 310 52 435 650 35.2 DF pairing (P0, P6, P5 levels)
7334CTNDF尼龙保持器 170 360 72 679 1040 62.4 DF pairing (P0, P6, P5 levels)
7334ATNDF尼龙保持器 170 360 72 630 970 71.6 DF pairing (P0, P6, P5 levels)
7334BTNDF尼龙保持器 170 360 72 575 890 71.2 DF pairing (P0, P6, P5 levels)
7836ATNDF尼龙保持器 180 225 22 111 204 3.86 DF pairing (P0, P6, P5 levels)
7836BTNDF尼龙保持器 180 225 22 99 182 3.84 DF pairing (P0, P6, P5 levels)
7936CTNDF尼龙保持器 180 250 33 236 370 9.8 DF pairing (P0, P6, P5 levels)
7936ATNDF尼龙保持器 180 250 33 213 335 9.94 DF pairing (P0, P6, P5 levels)
7936BTNDF尼龙保持器 180 250 33 190 300 9.68 DF pairing (P0, P6, P5 levels)
7036ATNDF尼龙保持器 180 280 46 335 505 21 DF pairing (P0, P6, P5 levels)
7036BTNDF尼龙保持器 180 280 46 300 455 20.4 DF pairing (P0, P6, P5 levels)
7236ATNDF尼龙保持器 180 320 52 495 770 36.2 DF pairing (P0, P6, P5 levels)
7236BTNDF尼龙保持器 180 320 52 450 700 36.8 DF pairing (P0, P6, P5 levels)
7336ATNDF尼龙保持器 180 380 75 665 1070 84.2 DF pairing (P0, P6, P5 levels)
7336BTNDF尼龙保持器 180 380 75 605 975 85.2 DF pairing (P0, P6, P5 levels)
7838ATNDF尼龙保持器 190 240 24 133 240 4.94 DF pairing (P0, P6, P5 levels)