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）
NA4824 120 150 30 96.9 259 1.3 NA48 series
NA4826 130 165 35 116 340 1.96 NA48 series
NA4828 140 175 35 120 363 2.1 NA48 series
NA4830 150 190 40 168 446 2.88 NA48 series
NA4832 160 200 40 173 474 3.05 NA48 series
NA4834 170 215 45 211 567 4.12 NA48 series
NA4836 180 225 45 218 602 4.34 NA48 series
NA4838 190 240 50 249 726 5.76 NA48 series
NA4840 200 250 50 255 766 6.04 NA48 series
NA4844 220 270 50 266 833 6.57 NA48 series
NA4848 240 300 60 345 1150 10.2 NA48 series
NA4852 260 320 60 354 1220 11 NA48 series
NA4856 280 350 69 486 1550 15.8 NA48 series
NA4860 300 380 80 610 1900 22.3 NA48 series
NA4864 320 400 80 635 2040 23.7 NA48 series
NA4868 340 420 80 651 2140 25 NA48 series
NA4872 360 440 80 680 2320 26.4 NA48 series
NA4876 380 480 100 951 2860 44.6 NA48 series