JNS NK40/20 Machined Ring Type Needle Roller Bearing Without Inner Ring, 40mm bore x 50mm outside diameter x 20mm width. Equivalent to IKO TAF405020, INA NK40/20, NTN NK40/20R, Torrington - Koyo NK40/20.
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