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）
RNA49/58U 65 82 25 53.4 89.2 0.275 Single seal
RNA4912U 68 85 25 54.5 92.8 0.285 Single seal
RNA49/62U 70 88 25 55.7 96.3 0.32 Single seal
RNA4913U 72 90 25 56.8 99.8 0.325 Single seal
RNA49/68U 75 95 30 73.9 133 0.465 Single seal
RNA4914U 80 100 30 76.9 143 0.495 Single seal
RNA4915U 85 105 30 79.6 153 0.52 Single seal
RNA4916U 90 110 30 80.7 158 0.545 Single seal
RNA49/82U 95 115 30 83.2 168 0.57 Single seal
RNA4917U 100 120 35 103 225 0.695 Single seal
RNA4918U 105 125 35 106 238 0.73 Single seal
RNA4919U 110 130 35 109 250 0.76 Single seal
RNA4920U 115 140 40 134 297 1.2 Single seal
RNA4922U 125 150 40 140 322 1.28 Single seal
RNA4924U 135 165 45 178 410 1.94 Single seal
RNA4926U 150 180 50 206 511 2.36 Single seal
RNA4928U 160 190 50 214 549 2.51 Single seal
NA4900U 10 22 13 8 8.5 0.0245 Single seal
NA4901U 12 24 13 8.4 9.3 0.0275 Single seal
NA4904U 20 37 17 17.9 20.5 0.0785 Single seal