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It can be combined with an inner ring , where the shaft cannot be hardened and ground.
The needle roller bearing can accommodate axial loads in one direction and, therefore, locate the shaft in one direction only.
The combined bearings can be mounted back-to-back, for short shafts and where changes in length due to thermal expansion are relatively minor.
NKX series bearings with a cage consist of a radial needle roller bearing and a thrust ball bearing with a ball and cage thrust assembly identical to the 511 series.
This bearing permit relatively high-speed operation and located axially in one direction by the outer ring flange.
It can be mounted separately from both the ball and cage assembly and shaft washer.
This series bearing should be oil lubricated, as there is no cover that retains the grease in the bearing,it have no stamped steel cover, as standard.

NKX 70 Needle roller / thrust Ball bearings detail Specifications

Main Dimensions
Diameter under rollers(Fw): 70mm
Outer diameter(D): 85mm
Diameter of flange(D1)(max.):95.2mm
Width(C):40mm
Width of thrust part(C1):18mm
Distance side face to lubrication hole(C2):11mm
Bore diameter of thrust part(dw):70mm
Chamfer dimension(r) min.:1.0mm
Dynamic load ratings radial(Cr): 44.5KN
Static load ratings radial(Cor): 92KN
Dynamic load ratings axial(Cr): 43KN
Static load ratings axial(Cor): 127KN

ABUTMENT DIMENSIONS
Diameter of shaft abutment(da)min.:90.5 mm
Radius of fillet(ra)max.:1 mm
Radius of fillet(rb)max.:1 mm
Bore diameter of associated inner ring(Di):60 mm
Diameter of inner ring raceway(F):70 mm
Width of associated inner ring(Bi):25 mm