JNS NK21/16 Machined Ring Type Needle Roller Bearing Without Inner Ring, 21mm bore x 29mm outside diameter x 16mm width. Equivalent to IKO TAF212916, INA NK21/16, NTN NK21/16R, Torrington - Koyo NK21/16.
Machined type needle roller bearings are high precision bearings which consist of machined outer ring with a complement of needle rollers retained and guided by a cage. The bearings feature a smaller cross-section, higher load-carrying capacity, greater rigidity. Therefore, they are useful in making machinery smaller and lighter.
JNS Needle Bearing Crossover Chart