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）
78/530AMDB车削铜保持器 530 650 56 810 1680 74.4 DB pairing (P0, P6, P5 levels)
79/530ACMDB车削铜保持器 530 710 82 1000 2600 172 DB pairing (P0, P6, P5 levels)
BA540-2ADB车削铜保持器 540 660 56 635 1790 156.4 DB pairing (P0, P6, P5 levels)
78/560AMDB车削铜保持器 560 680 56 820 1740 79.6 DB pairing (P0, P6, P5 levels)
BA560-1ADB车削铜保持器 560 700 100 1080 2890 174.6 DB pairing (P0, P6, P5 levels)
79/560AMDB车削铜保持器 560 750 85 1010 2760 210 DB pairing (P0, P6, P5 levels)
78/600AMDB车削铜保持器 600 730 60 920 2060 100 DB pairing (P0, P6, P5 levels)
78/630AMDB车削铜保持器 630 780 69 815 2270 144.4 DB pairing (P0, P6, P5 levels)
78/670AMDB车削铜保持器 670 820 69 770 2150 152.6 DB pairing (P0, P6, P5 levels)
78/670BMDB车削铜保持器 670 820 69 680 1890 152.6 DB pairing (P0, P6, P5 levels)
BA700-1ADB车削铜保持器 700 900 74 860 2580 234 DB pairing (P0, P6, P5 levels)
78/710AMDB车削铜保持器 710 870 74 1180 2920 187.2 DB pairing (P0, P6, P5 levels)
78/750AMDB车削铜保持器 750 920 78 1280 3260 222 DB pairing (P0, P6, P5 levels)
BA760-1ADB车削铜保持器 760 860 50 415 1470 80.2 DB pairing (P0, P6, P5 levels)
BA775-1ADB车削铜保持器 775 1080 90 960 3400 548 DB pairing (P0, P6, P5 levels)
78/800AMDB车削铜保持器 800 980 82 1400 3740 262 DB pairing (P0, P6, P5 levels)
78/850AMDB车削铜保持器 850 1030 82 1420 3880 246 DB pairing (P0, P6, P5 levels)
78/900AMDB车削铜保持器 900 1090 85 1540 4360 320.44 DB pairing (P0, P6, P5 levels)
78/950AMDB车削铜保持器 950 1150 90 1660 4860 336 DB pairing (P0, P6, P5 levels)
78/1000AMDB车削铜保持器 1000 1220 100 1880 5700 484 DB pairing (P0, P6, P5 levels)