Double Row Cylindrical Roller Bearings

1.Products:
Type Code: NN-Double row cylindrical roller bearings(inner ribs form)
Series Code: 30-30 Series
Inner Code: Inner codex5=Bearing bore diameter
Bore the form of Code: No mark-cylinder inside the hole; K-Taper taper 1:12
Cage Class: No mark-Copper alloycage; TN-Resin cage
Precision Code: P5-ISO5 level; P4-ISO4 level;P2-ISO2 level; SP-The size ISO5,rotation than ISO5 level; UP-The size ISO4,rotation than ISO4 level;
Radial Clearance Letter: No mark-Standard clearance,C1,C2-Special clearance of less than standard clearance
Hole Code: No mark-No hole; W33-The outer ring with the standard tank and the hole

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Double Row Cylindrical Roller Bearings