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）
7824AMDB车削铜保持器 120 150 16 51.5 79.5 1.26 DB pairing (P0, P6, P5 levels)
7924ACMDB车削铜保持器 120 165 22 110 154 2.3 DB pairing (P0, P6, P5 levels)
7924AMDB车削铜保持器 120 165 22 99 139 3.32 DB pairing (P0, P6, P5 levels)
7024AMDB车削铜保持器 120 180 28 166 213 4.9 DB pairing (P0, P6, P5 levels)
7024BMDB车削铜保持器 120 180 28 148 192 4.54 DB pairing (P0, P6, P5 levels)
BA120-3ADB车削铜保持器 120 215 38 274 325 24 DB pairing (P0, P6, P5 levels)
7224AMDB车削铜保持器 120 215 40 297 355 12.44 DB pairing (P0, P6, P5 levels)
7224BMDB车削铜保持器 120 215 40 269 325 12.52 DB pairing (P0, P6, P5 levels)
BT120-1BDB车削铜保持器 120 220 40 247 294 13.54 DB pairing (P0, P6, P5 levels)
7324CMDB车削铜保持器 120 260 55 431 542 25.2 DB pairing (P0, P6, P5 levels)
7324AMDB车削铜保持器 120 260 55 400 505 29 DB pairing (P0, P6, P5 levels)
7324BMDB车削铜保持器 120 260 55 365 460 28.8 DB pairing (P0, P6, P5 levels)
7826AMDB车削铜保持器 130 165 18 68.5 106 1.82 DB pairing (P0, P6, P5 levels)
7926ACMDB车削铜保持器 130 180 24 120 172 3.08 DB pairing (P0, P6, P5 levels)
7926AMDB车削铜保持器 130 180 24 121 175 3.64 DB pairing (P0, P6, P5 levels)
BA130-1ADB车削铜保持器 130 199.5 33 191 251 7.48 DB pairing (P0, P6, P5 levels)
7026AMDB车削铜保持器 130 200 33 191 251 7.36 DB pairing (P0, P6, P5 levels)
7026BMDB车削铜保持器 130 200 33 171 226 6.86 DB pairing (P0, P6, P5 levels)
BA130-2ADB车削铜保持器 130 205 24 122 180 5.96 DB pairing (P0, P6, P5 levels)
7226AMDB车削铜保持器 130 230 40 310 385 14.12 DB pairing (P0, P6, P5 levels)