DT pairing (P0, P6, P5 levels)

DT pairing is one of the three classic paired installation methods for angular contact ball bearings, with the full name Double Tandem (series connection) and code DT. The core is to install two angular contact ball bearings of the same specification in the same direction (outer ring wide/narrow edge in the same direction, contact angle centerline in the same line), forming a unidirectional load superposition layout, suitable for radial load+ultra large unidirectional axial load conditions. It is the core choice for heavy-duty shaft systems that need to withstand unidirectional large axial forces, such as rolling mills, cranes, hydraulic equipment, etc. It can be adapted to the full series of angular contact ball bearings such as 7000C/AC/B and AC7000 all ceramic types.

Model Basic Dimensions Basic rated dynamic load WeightType
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
7821BTNDT尼龙保持器 105 130 13 49.4 60 0.74 DT pairing (P0, P6, P5 levels)
7921ACTNDT尼龙保持器 105 145 20 78.5 108 1.64 DT pairing (P0, P6, P5 levels)
7921ATNDT尼龙保持器 105 145 20 79 109 1.94 DT pairing (P0, P6, P5 levels)
7021ATNDT尼龙保持器 105 160 26 130 163 3.68 DT pairing (P0, P6, P5 levels)
7021BTNDT尼龙保持器 105 160 26 116 147 3.46 DT pairing (P0, P6, P5 levels)
7221ATNDT尼龙保持器 105 190 36 254 283 7.68 DT pairing (P0, P6, P5 levels)
7221BTNDT尼龙保持器 105 190 36 231 258 7.84 DT pairing (P0, P6, P5 levels)
7321CTNDT尼龙保持器 105 225 49 362 413 17.24 DT pairing (P0, P6, P5 levels)
7321ATNDT尼龙保持器 105 225 49 335 385 18.68 DT pairing (P0, P6, P5 levels)
7321BTNDT尼龙保持器 105 225 49 310 355 18.86 DT pairing (P0, P6, P5 levels)
7822ATNDT尼龙保持器 110 140 16 50.5 76 1.16 DT pairing (P0, P6, P5 levels)
7922ACTNDT尼龙保持器 110 150 20 79.5 112 1.754 DT pairing (P0, P6, P5 levels)
7922ATNDT尼龙保持器 110 150 20 80 112 2.02 DT pairing (P0, P6, P5 levels)
7022ATNDT尼龙保持器 110 170 28 157 191 4.56 DT pairing (P0, P6, P5 levels)
7022BTNDT尼龙保持器 110 170 28 141 172 4.28 DT pairing (P0, P6, P5 levels)
7222ATNDT尼龙保持器 110 200 38 276 315 8.98 DT pairing (P0, P6, P5 levels)
7222BTNDT尼龙保持器 110 200 38 250 289 9.16 DT pairing (P0, P6, P5 levels)
7322CTNDT尼龙保持器 110 240 50 404 484 20.2 DT pairing (P0, P6, P5 levels)
7322ATNDT尼龙保持器 110 240 50 360 430 22.2 DT pairing (P0, P6, P5 levels)
7322BTNDT尼龙保持器 110 240 50 325 395 22.4 DT pairing (P0, P6, P5 levels)