Straight hole open type

The straight hole open type self-aligning ball bearing is the basic universal type of self-aligning ball bearing. It adopts a classic structure of cylindrical straight hole inner ring+open unsealed+double row steel balls+outer ring spherical raceway. The core has the characteristics of self centering, easy installation, and flexible lubrication. It is mainly suitable for light medium load and large coaxiality deviation working conditions. It has no taper, no seal, and no additional locking structure. It is one of the most widely used basic bearings in industrial equipment and is suitable for general light medium load scenarios such as textiles, conveyors, agricultural machinery, and reducers.

Model Basic Dimensions Basic rated dynamic load WeightType
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
2308 40 90 33 46 13.4 0.922 Straight hole open type
1209 45 85 19 22 7.3 0.462 Straight hole open type
2209 45 85 23 28.5 8.9 0.517 Straight hole open type
1309 45 100 25 38.5 12.6 0.953 Straight hole open type
2309 45 100 36 55 16.5 1.22 Straight hole open type
1210 50 90 20 22.9 8 0.526 Straight hole open type
2210 50 90 23 28.5 9.4 0.556 Straight hole open type
1310 50 110 27 42 14.1 1.21 Straight hole open type
2310 50 110 40 66 20.1 1.64 Straight hole open type
1211 55 100 21 27 9.9 0.693 Straight hole open type
2211 55 100 25 39 12.4 0.746 Straight hole open type
1311 55 120 29 52 17.7 1.57 Straight hole open type
2311 55 120 43 77 23.8 2.07 Straight hole open type
1212 60 110 22 30.5 11.4 0.894 Straight hole open type
2212 60 110 28 48 16.3 1.06 Straight hole open type
1312 60 130 31 58 20.6 1.97 Straight hole open type
2312 60 130 46 89 28 2.58 Straight hole open type
1213 65 120 23 31 12.4 1.14 Straight hole open type
2213 65 120 31 58 19 1.36 Straight hole open type
1313 65 140 33 63 22.7 2.44 Straight hole open type