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）
7234AWDF冲压钢保持器 170 310 52 480 715 34.6 DF pairing (P0, P6, P5 levels)
7234BWDF冲压钢保持器 170 310 52 435 650 35.2 DF pairing (P0, P6, P5 levels)
7334AWDF冲压钢保持器 170 360 72 630 970 71.6 DF pairing (P0, P6, P5 levels)
7334BWDF冲压钢保持器 170 360 72 575 890 71.2 DF pairing (P0, P6, P5 levels)
7036AWDF冲压钢保持器 180 280 46 335 505 21 DF pairing (P0, P6, P5 levels)
7036BWDF冲压钢保持器 180 280 46 300 455 20.4 DF pairing (P0, P6, P5 levels)
7236AWDF冲压钢保持器 180 320 52 495 770 36.2 DF pairing (P0, P6, P5 levels)
7236BWDF冲压钢保持器 180 320 52 450 700 36.8 DF pairing (P0, P6, P5 levels)
7336AWDF冲压钢保持器 180 380 75 665 1070 84.2 DF pairing (P0, P6, P5 levels)
7336BWDF冲压钢保持器 180 380 75 605 975 85.2 DF pairing (P0, P6, P5 levels)
7038AWDF冲压钢保持器 190 290 46 365 560 22.6 DF pairing (P0, P6, P5 levels)
7038BWDF冲压钢保持器 190 290 46 325 505 21.6 DF pairing (P0, P6, P5 levels)
7238AWDF冲压钢保持器 190 340 55 510 825 44.8 DF pairing (P0, P6, P5 levels)
7238BWDF冲压钢保持器 190 340 55 460 750 45 DF pairing (P0, P6, P5 levels)
7338AWDF冲压钢保持器 190 400 78 730 1200 95 DF pairing (P0, P6, P5 levels)
7338BWDF冲压钢保持器 190 400 78 670 1100 94.4 DF pairing (P0, P6, P5 levels)
7040AWDF冲压钢保持器 200 310 51 390 620 27.4 DF pairing (P0, P6, P5 levels)
7040BWDF冲压钢保持器 200 310 51 350 560 25.4 DF pairing (P0, P6, P5 levels)
7240AWDF冲压钢保持器 200 360 58 550 900 53 DF pairing (P0, P6, P5 levels)
7240BWDF冲压钢保持器 200 360 58 495 815 53.2 DF pairing (P0, P6, P5 levels)