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NSK’s Extra-Capacity Sealed-Clean Four Row Taper Roller Bearings offer higher load capacity; provide greater sealing performance; and adopt Super-TF and WTF™ material.
Super-TF or WTF™ steel material.
Newly designed bearing internal geometry - wider cage diameter, increased number of rollers & larger rollers.
Seals: New type of lateral seal, new bore seal.
Main seal and seal holder are of a more compact design.
Special helicoidal groove.