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）
RNA4900U 14 22 13 8 8.5 0.016 Single seal
RNA4901U 16 24 13 8.4 9.3 0.018 Single seal
RNA4904U 25 37 17 17.9 20.5 0.055 Single seal
RNA49/14U 18 26 13 9.26 10.8 0.0197 Single seal
RNA4902U 20 28 13 9.6 11.7 0.022 Single seal
RNA4903U 22 30 13 10.3 13.1 0.023 Single seal
RNA49/22U 28 39 17 18.3 23.7 0.0555 Single seal
RNA4905U 30 42 17 20.3 25.1 0.063 Single seal
RNA49/28U 32 45 17 21 26.8 0.0755 Single seal
RNA4906U 35 47 17 21.6 28.4 0.071 Single seal
RNA49/32U 40 52 20 29.4 44.2 0.0945 Single seal
RNA4907U 42 55 20 30.1 46.3 0.11 Single seal
RNA49/38U 45 58 20 31.6 50.4 0.119 Single seal
RNA4908U 48 62 22 37.2 58.3 0.15 Single seal
RNA49/42U 50 65 22 38 60.9 0.173 Single seal
RNA4909U 52 68 22 38.8 63.4 0.19 Single seal
RNA49/48U 55 70 22 39.6 66.1 0.187 Single seal
RNA4910U 58 72 22 41.3 71.1 0.18 Single seal
RNA49/52U 60 75 22 42.1 73.6 0.2 Single seal
RNA4911U 63 80 25 52.2 85.7 0.265 Single seal