Double row cylindrical roller bearings are cylindrical bore and conical bore two kinds of structure, the type of bearing with compact structure, rigidity, bearing capacity, small deformation by load, etc., especially for machine tool spindle support.
Double row cylindrical roller bearings cage to use more physical cage.
structure
Various types of double row cylindrical roller bearing structure distinction:
NN-type bearing inner ring double-wall and no outer wall; NNU-type bearings for the outer ring and the inner wall without ribs.
Both bearings do not limit the axial displacement between the shaft and the shell, generally used for non-locating bearing.
