QJ. N2 with keyway

The QJ ・ N2 type is a specially designed four point contact ball bearing with keyway. The suffix N2 represents the outer ring with a single-sided keyway and a stop ring groove. The core is a four point contact ball structure, which can withstand bidirectional axial loads and radial loads. A single set of bearings can achieve bidirectional axial positioning of the shaft system. The keyway design can effectively prevent relative rotation between the outer ring and the bearing seat, and is suitable for high-speed, heavy-duty, and precision transmission scenarios that require anti slip of the outer ring. It is the core precision support choice for machine tool spindles, reducers, wind turbine gearboxes, and other equipment.

Model Basic Dimensions Basic rated dynamic load WeightType
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
QJ202N2 15 35 11 8.3 12.7 0.062 QJ. N2 with keyway
QJ203N2 17 40 12 11.4 17 0.082 QJ. N2 with keyway
QJ303N2 17 47 14 15 23.4 0.14 QJ. N2 with keyway
QJ304N2 20 52 15 21.6 32 0.18 QJ. N2 with keyway
QJ205N2 25 52 15 21.2 27 0.16 QJ. N2 with keyway
QJ305N2 25 62 17 30 42.5 0.29 QJ. N2 with keyway
QJ206N2 30 62 16 31 45 0.24 QJ. N2 with keyway
QJ306N2 30 72 19 46 63 0.42 QJ. N2 with keyway
QJ207N2 35 72 17 41 61.5 0.35 QJ. N2 with keyway
QJ307N2 35 80 21 55 80 0.57 QJ. N2 with keyway
QJ208N2 40 80 18 49 77.5 0.45 QJ. N2 with keyway
QJ308N2 40 90 23 67 100 0.78 QJ. N2 with keyway
QJ209N2 45 85 19 55 88.5 0.52 QJ. N2 with keyway
QJ309N2 45 100 25 87.5 133 1.05 QJ. N2 with keyway
QJ210N2 50 90 20 57 97 0.59 QJ. N2 with keyway
QJ310N2 50 110 27 102 159 1.35 QJ. N2 with keyway
QJ211N2 55 100 21 71 122 0.77 QJ. N2 with keyway
QJ311N2 55 120 29 118 187 1.75 QJ. N2 with keyway
QJ212N2 60 110 22 85.5 150 0.98 QJ. N2 with keyway
QJ312N2 60 130 31 135 217 2.15 QJ. N2 with keyway