NK12/12 Needle Roller Bearing – Machined Ring, High Radial Load Capacity. Single-row needle roller bearing without inner ring — the shaft serves as the raceway. High stiffness, low cross-section, accommodates axial displacement. Ideal for gearboxes, automotive transmissions, pumps, compressors, and compact industrial machinery where radial space is limited. Model: NK12/12 (NK12/12-XL, NK12/12TN variants available) Bearing Type: Needle roller bearing, single row, machined ring, without inner ring Under Roller Diameter (Fw): 12 mm / 0.4724 in Outside Diameter (D): 19 mm / 0.7480 in Width (C): 12 mm / 0.4724 in Weight: 11.68 – 13.0 g