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）
2303 17 47 19 13.9 3.15 0.155 Straight hole open type
1204 20 47 14 10.1 2.6 0.118 Straight hole open type
2204 20 47 18 14.7 3.5 0.134 Straight hole open type
1304 20 52 15 12.7 3.3 0.163 Straight hole open type
2304 20 52 21 17.6 4.25 0.206 Straight hole open type
1205 25 52 15 12.3 3.25 0.138 Straight hole open type
2205 25 52 18 17.3 4.4 0.156 Straight hole open type
1305 25 62 17 18.3 4.95 0.258 Straight hole open type
2305 25 62 24 25 6.5 0.335 Straight hole open type
1206 30 62 16 15.9 4.6 0.221 Straight hole open type
2206 30 62 20 26 6.9 0.252 Straight hole open type
1306 30 72 19 21.7 6.3 0.384 Straight hole open type
2306 30 72 27 32.5 8.7 0.488 Straight hole open type
1207 35 72 17 16 5.1 0.324 Straight hole open type
2207 35 72 23 33 8.9 0.389 Straight hole open type
1307 35 80 21 25.5 7.8 0.507 Straight hole open type
2307 35 80 31 40.5 11.1 0.675 Straight hole open type
1208 40 80 18 19.4 6.5 0.414 Straight hole open type
2208 40 80 23 32.5 9.4 0.476 Straight hole open type
1308 40 90 23 30 9.6 0.708 Straight hole open type