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）
BA1000-1ADB车削铜保持器 1000 1420 130 2340 9250 1308 DB pairing (P0, P6, P5 levels)
78/1060AMDB车削铜保持器 1060 1280 100 1430 5350 510 DB pairing (P0, P6, P5 levels)
78/1120AMDB车削铜保持器 1120 1360 106 2160 7000 624 DB pairing (P0, P6, P5 levels)
78/1400AMDB车削铜保持器 1400 1700 132 3080 11400 1206 DB pairing (P0, P6, P5 levels)
78/1500AMDB车削铜保持器 1500 1820 140 3280 12600 1472 DB pairing (P0, P6, P5 levels)