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）
7013BTNDB尼龙保持器 65 100 18 48.9 56.6 0.94 DB pairing (P0, P6, P5 levels)
7213ATNDB尼龙保持器 65 120 23 114 116 2.06 DB pairing (P0, P6, P5 levels)
7213BTNDB尼龙保持器 65 120 23 103 105 2.1 DB pairing (P0, P6, P5 levels)
7313CTNDB尼龙保持器 65 140 33 182 161 4.44 DB pairing (P0, P6, P5 levels)
7313ATNDB尼龙保持器 65 140 33 180 164 4.24 DB pairing (P0, P6, P5 levels)
7313BTNDB尼龙保持器 65 140 33 166 151 4.34 DB pairing (P0, P6, P5 levels)
7413ATNDB尼龙保持器 65 160 37 226 209 6.82 DB pairing (P0, P6, P5 levels)
7413BTNDB尼龙保持器 65 160 37 209 194 6.82 DB pairing (P0, P6, P5 levels)
7814BTNDB尼龙保持器 70 90 10 32 34.6 0.182 DB pairing (P0, P6, P5 levels)
7914ACTNDB尼龙保持器 70 100 16 43 52.5 0.682 DB pairing (P0, P6, P5 levels)
7014ATNDB尼龙保持器 70 110 20 71.5 82.5 1.25 DB pairing (P0, P6, P5 levels)
7014BTNDB尼龙保持器 70 110 20 62.1 71.1 1.32 DB pairing (P0, P6, P5 levels)
7214ATNDB尼龙保持器 70 125 24 124 127 2.22 DB pairing (P0, P6, P5 levels)
7214BTNDB尼龙保持器 70 125 24 112 116 2.28 DB pairing (P0, P6, P5 levels)
7314CTNDB尼龙保持器 70 150 35 205 184 5.4 DB pairing (P0, P6, P5 levels)
7314ATNDB尼龙保持器 70 150 35 203 187 5.2 DB pairing (P0, P6, P5 levels)
7314BTNDB尼龙保持器 70 150 35 186 172 5.3 DB pairing (P0, P6, P5 levels)
7414ATNDB尼龙保持器 70 180 42 242 230 9.98 DB pairing (P0, P6, P5 levels)
7414BTNDB尼龙保持器 70 180 42 241 237 9.98 DB pairing (P0, P6, P5 levels)
7815BTNDB尼龙保持器 75 95 10 32.6 36 0.192 DB pairing (P0, P6, P5 levels)