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）
7032BMDB车削铜保持器 160 240 38 225 320 10.9 DB pairing (P0, P6, P5 levels)
BA160-4ADB车削铜保持器 160 250 40 252 355 14.28 DB pairing (P0, P6, P5 levels)
7232AMDB车削铜保持器 160 290 48 425 615 28.2 DB pairing (P0, P6, P5 levels)
7232BMDB车削铜保持器 160 290 48 385 555 28.4 DB pairing (P0, P6, P5 levels)
7332CMDB车削铜保持器 160 340 68 640 980 52.8 DB pairing (P0, P6, P5 levels)
7332AMDB车削铜保持器 160 340 68 565 845 61.4 DB pairing (P0, P6, P5 levels)
7332BMDB车削铜保持器 160 340 68 515 770 61.6 DB pairing (P0, P6, P5 levels)
7834AMDB车削铜保持器 170 215 22 109 192 3.7 DB pairing (P0, P6, P5 levels)
7834BMDB车削铜保持器 170 215 22 96.5 171 3.66 DB pairing (P0, P6, P5 levels)
7934CMDB车削铜保持器 170 230 28 183 297 6.72 DB pairing (P0, P6, P5 levels)
7934AMDB车削铜保持器 170 230 28 165 269 6.78 DB pairing (P0, P6, P5 levels)
7934BMDB车削铜保持器 170 230 28 147 241 6.72 DB pairing (P0, P6, P5 levels)
7034AMDB车削铜保持器 170 260 42 300 430 15.8 DB pairing (P0, P6, P5 levels)
7034BMDB车削铜保持器 170 260 42 270 385 15.54 DB pairing (P0, P6, P5 levels)
7234AMDB车削铜保持器 170 310 52 480 715 34.6 DB pairing (P0, P6, P5 levels)
7234BMDB车削铜保持器 170 310 52 435 650 35.2 DB pairing (P0, P6, P5 levels)
7334CMDB车削铜保持器 170 360 72 679 1040 62.4 DB pairing (P0, P6, P5 levels)
7334AMDB车削铜保持器 170 360 72 630 970 71.6 DB pairing (P0, P6, P5 levels)
7334BMDB车削铜保持器 170 360 72 575 890 71.2 DB pairing (P0, P6, P5 levels)
7836AMDB车削铜保持器 180 225 22 111 204 3.86 DB pairing (P0, P6, P5 levels)