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）
7313AWDB冲压钢保持器 65 140 33 180 164 4.24 DB pairing (P0, P6, P5 levels)
7313BWDB冲压钢保持器 65 140 33 166 151 4.34 DB pairing (P0, P6, P5 levels)
7413AWDB冲压钢保持器 65 160 37 226 209 6.82 DB pairing (P0, P6, P5 levels)
7413BWDB冲压钢保持器 65 160 37 209 194 6.82 DB pairing (P0, P6, P5 levels)
7014AWDB冲压钢保持器 70 110 20 71.5 82.5 1.25 DB pairing (P0, P6, P5 levels)
7014BWDB冲压钢保持器 70 110 20 62.1 71.1 1.32 DB pairing (P0, P6, P5 levels)
7214AWDB冲压钢保持器 70 125 24 124 127 2.22 DB pairing (P0, P6, P5 levels)
7214BWDB冲压钢保持器 70 125 24 112 116 2.28 DB pairing (P0, P6, P5 levels)
7314AWDB冲压钢保持器 70 150 35 203 187 5.2 DB pairing (P0, P6, P5 levels)
7314BWDB冲压钢保持器 70 150 35 186 172 5.3 DB pairing (P0, P6, P5 levels)
7414AWDB冲压钢保持器 70 180 42 242 230 9.98 DB pairing (P0, P6, P5 levels)
7414BWDB冲压钢保持器 70 180 42 241 237 9.98 DB pairing (P0, P6, P5 levels)
7015AWDB冲压钢保持器 75 115 20 73 87.5 1.322 DB pairing (P0, P6, P5 levels)
7015BWDB冲压钢保持器 75 115 20 63.5 75.2 1.38 DB pairing (P0, P6, P5 levels)
7215AWDB冲压钢保持器 75 130 25 123 129 2.38 DB pairing (P0, P6, P5 levels)
7215BWDB冲压钢保持器 75 130 25 112 117 2.44 DB pairing (P0, P6, P5 levels)
7315AWDB冲压钢保持器 75 160 37 221 212 6.26 DB pairing (P0, P6, P5 levels)
7315BWDB冲压钢保持器 75 160 37 202 195 6.38 DB pairing (P0, P6, P5 levels)
7415AWDB冲压钢保持器 75 190 45 278 282 11.8 DB pairing (P0, P6, P5 levels)
7415BWDB冲压钢保持器 75 190 45 257 261 11.8 DB pairing (P0, P6, P5 levels)