DB pairing (P0, P6, P5 levels)

DB pairing is the most commonly used paired installation method for angular contact ball bearings, full name Double Back to Back, also known as back-to-back pairing, code named DB. The core is to install two angular contact ball bearings of the same specification with the outer ring wide edge facing each other and the inner ring narrow edge facing each other, forming an open layout facing both sides, suitable for radial+bidirectional axial load+overturning moment working conditions. It is the mainstream choice for shaft systems such as machine tool spindles, precision motors, reducers, etc. that require rigidity and rotational accuracy, and can also be adapted to angular contact ball bearings such as AC7000 and 7000 series.

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