Needle Roller Bearings

Common Needle Roller Bearing Model Prefixes (Representing Types):

RNA (Drawn cup without inner ring): Machined, without inner ring.

NK (Needle roller bearing, without inner ring): Needle roller bearing without inner ring.

NKI (Needle roller bearing, with inner ring): Needle roller bearing with inner ring.

RNA..UU (Sealed, without inner ring): Sealed, without inner ring.

NA..UU (Sealed, with inner ring): Sealed, with inner ring.

HK (Drawn cup needle roller bearings): Machined needle roller bearings (commonly used by KOYO).

RC (Machined needle roller bearings): Precision needle roller bearings (with/without flange).

Common Applications:
Automotive: Transmissions, rocker arm pivots, U-joints.
Industrial: Gearboxes, printing machines, robots, construction equipment.