Single seal

The single sealed needle roller bearing is a derivative of the standard needle roller bearing that integrates a single-sided sealing structure. It is divided into two core categories: stamped outer ring/solid outer ring, and no inner ring/with inner ring. The sealing side achieves dust and grease leakage prevention, and the opening side can be easily refilled, balancing sealing protection and maintenance flexibility. It is suitable for industrial scenarios with mild sealing requirements such as dust and humidity that require regular lubrication. It is the mainstream choice in the fields of engineering machinery, automotive parts, conveying equipment, agricultural machinery, etc.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
RNA6912U 68 85 45 93.4 186 0.505 Single seal
RNA6913U 72 90 45 97.4 200 0.58 Single seal
RNA6914U 80 100 54 124 281 0.91 Single seal
RNA6915U 85 105 54 128 299 0.96 Single seal
RNA6916U 90 110 54 132 317 1.01 Single seal
RNA6917U 100 120 63 168 448 1.3 Single seal
RNA6918U 105 125 63 172 471 1.36 Single seal
RNA6919U 110 130 63 177 493 1.42 Single seal
NA6900U 10 22 22 16.3 20.9 0.04 Single seal
NA6901U 12 24 22 15.5 20.4 0.0455 Single seal
NA6902U 15 28 23 18.5 27.1 0.0625 Single seal
NA6903U 17 30 23 19.8 30.6 0.0685 Single seal
NA6904U 20 37 30 33 44.6 0.137 Single seal
NA69/22U 22 39 30 33.8 52 0.153 Single seal
NA6905U 25 42 30 39.2 58.7 0.162 Single seal
NA69/28U 28 45 30 38.9 59.1 0.177 Single seal
NA6906U 30 47 30 40.1 63 0.185 Single seal
NA69/32U 32 52 36 50.3 88.3 0.3 Single seal
NA6907U 35 55 36 51.6 92.6 0.32 Single seal
NA6908U 40 62 40 63.7 117 0.44 Single seal