NA48 series

The NA48 series is a double row fully loaded needle roller bearing (with inner ring), without a cage and with full needle arrangement. The inner ring is integrally formed with double gear edges, and the outer ring is a stamped/turned structure with extremely strong radial bearing capacity. It is suitable for industrial scenarios with low-speed heavy loads and limited radial space, and can withstand pure radial loads. It is widely used for shaft end support in metallurgy, mining, engineering machinery, and heavy-duty transmission equipment.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
RNA4822 120 140 30 93.2 239 0.79 NA48 series
RNA4824 130 150 30 96.9 259 0.85 NA48 series
RNA4826 145 165 35 116 340 1.1 NA48 series
RNA4828 155 175 35 120 363 1.17 NA48 series
RNA4830 165 190 40 168 446 1.75 NA48 series
RNA4832 175 200 40 173 474 1.85 NA48 series
RNA4834 185 215 45 211 567 2.7 NA48 series
RNA4836 195 225 45 218 602 2.84 NA48 series
RNA4838 210 240 50 249 726 3.38 NA48 series
RNA4840 220 250 50 255 766 3.52 NA48 series
RNA4844 240 270 50 266 833 3.82 NA48 series
RNA4848 265 300 60 345 1150 5.67 NA48 series
RNA4852 285 320 60 354 1220 6.07 NA48 series
RNA4856 305 350 69 486 1550 9.75 NA48 series
RNA4860 330 380 80 610 1900 13.2 NA48 series
RNA4864 350 400 80 635 2040 14.1 NA48 series
RNA4868 370 420 80 651 2140 14.8 NA48 series
RNA4872 390 440 80 680 2320 15.6 NA48 series
RNA4876 415 480 100 951 2860 27.9 NA48 series
NA4822 110 140 30 93.2 239 1.2 NA48 series