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The Double-row Cylindrical Roller Bearing is the separable type bearing so it is easy to assemble and disassemble.
The Double-row Cylindrical Bearing has two structures: Cylindrical Bore and Tapered Bore (suffix K). It also has two designs: NNU and NN. The NN design has an inner ring with two ribs and an outer ring without ribs. The NNU design has an inner ring without ribs and an outer ring with two ribs. The structure with tapered bore allows the radial clearance to be adjusted when the bearing is installed. The Double-row Cylindrical Roller Bearing allows a certain axial displacement between the shaft and bearing housing, which can be used as a non-locating bearing.
The Double-row Cylindrical Roller Bearing is characterized by high stiffness and high precision, so it usually used as the spindle bearings of precision machine tools.
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