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）
7321AWDB冲压钢保持器 105 225 49 335 385 18.68 DB pairing (P0, P6, P5 levels)
7321BWDB冲压钢保持器 105 225 49 310 355 18.86 DB pairing (P0, P6, P5 levels)
7022AWDB冲压钢保持器 110 170 28 157 191 4.56 DB pairing (P0, P6, P5 levels)
7022BWDB冲压钢保持器 110 170 28 141 172 4.28 DB pairing (P0, P6, P5 levels)
7222AWDB冲压钢保持器 110 200 38 276 315 8.98 DB pairing (P0, P6, P5 levels)
7222BWDB冲压钢保持器 110 200 38 250 289 9.16 DB pairing (P0, P6, P5 levels)
7322AWDB冲压钢保持器 110 240 50 360 430 22.2 DB pairing (P0, P6, P5 levels)
7322BWDB冲压钢保持器 110 240 50 325 395 22.4 DB pairing (P0, P6, P5 levels)
7024AWDB冲压钢保持器 120 180 28 166 213 4.9 DB pairing (P0, P6, P5 levels)
7024BWDB冲压钢保持器 120 180 28 148 192 4.54 DB pairing (P0, P6, P5 levels)
7224AWDB冲压钢保持器 120 215 40 297 355 12.44 DB pairing (P0, P6, P5 levels)
7224BWDB冲压钢保持器 120 215 40 269 325 12.52 DB pairing (P0, P6, P5 levels)
7324AWDB冲压钢保持器 120 260 55 400 505 29 DB pairing (P0, P6, P5 levels)
7324BWDB冲压钢保持器 120 260 55 365 460 28.8 DB pairing (P0, P6, P5 levels)
7026AWDB冲压钢保持器 130 200 33 191 251 7.36 DB pairing (P0, P6, P5 levels)
7026BWDB冲压钢保持器 130 200 33 171 226 6.86 DB pairing (P0, P6, P5 levels)
7226AWDB冲压钢保持器 130 230 40 310 385 14.12 DB pairing (P0, P6, P5 levels)
7226BWDB冲压钢保持器 130 230 40 278 350 14.2 DB pairing (P0, P6, P5 levels)
7326AWDB冲压钢保持器 130 280 58 445 585 35 DB pairing (P0, P6, P5 levels)
7326BWDB冲压钢保持器 130 280 58 405 535 35.2 DB pairing (P0, P6, P5 levels)