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）
7860BTNDB尼龙保持器 300 380 38 295 570 19.82 DB pairing (P0, P6, P5 levels)
7960ATNDB尼龙保持器 300 420 56 510 1000 48.8 DB pairing (P0, P6, P5 levels)
7960BTNDB尼龙保持器 300 420 56 455 900 47.4 DB pairing (P0, P6, P5 levels)
7060ATNDB尼龙保持器 300 460 74 625 1210 89.8 DB pairing (P0, P6, P5 levels)
7060BTNDB尼龙保持器 300 460 74 560 1090 89 DB pairing (P0, P6, P5 levels)
7864ATNDB尼龙保持器 320 400 38 310 635 21 DB pairing (P0, P6, P5 levels)
7864BTNDB尼龙保持器 320 400 38 274 565 21 DB pairing (P0, P6, P5 levels)
7964ATNDB尼龙保持器 320 440 56 515 1050 51.8 DB pairing (P0, P6, P5 levels)
7964BTNDB尼龙保持器 320 440 56 460 940 50.6 DB pairing (P0, P6, P5 levels)
7064ATNDB尼龙保持器 320 480 74 755 1590 94.4 DB pairing (P0, P6, P5 levels)
7064BTNDB尼龙保持器 320 480 74 675 1430 93.8 DB pairing (P0, P6, P5 levels)
7264ATNDB尼龙保持器 320 580 92 1030 2230 220 DB pairing (P0, P6, P5 levels)
7264BTNDB尼龙保持器 320 580 92 960 2140 218 DB pairing (P0, P6, P5 levels)
7868ATNDB尼龙保持器 340 420 38 310 655 22.2 DB pairing (P0, P6, P5 levels)
7868BTNDB尼龙保持器 340 420 38 275 585 22.4 DB pairing (P0, P6, P5 levels)
7968ATNDB尼龙保持器 340 460 56 535 1130 54.4 DB pairing (P0, P6, P5 levels)
7968BTNDB尼龙保持器 340 460 56 475 1020 54.4 DB pairing (P0, P6, P5 levels)
7068ATNDB尼龙保持器 340 520 82 845 1810 121 DB pairing (P0, P6, P5 levels)
7068BTNDB尼龙保持器 340 520 82 755 1640 123.6 DB pairing (P0, P6, P5 levels)
7872ATNDB尼龙保持器 360 440 38 355 765 23.4 DB pairing (P0, P6, P5 levels)