NU210 Single‑row Cylindrical Roller Bearing 50*90*20mm Open‑type High Radial Load Chrome Steel Gearbox Motor Spare Part Product Overview NU210 is an open‑type single‑row cylindrical roller bearing with dimensions 50*90*20mm. It has two ribs on the outer ring and rib‑free inner ring, allowing free axial floating movement between shaft and housing. Manufactured from high‑quality GCr15 chrome steel, this separable‑structure bearing delivers excellent heavy radial‑load capacity