If you are going to import natr needle bearing in stock or you want to check the price with one China natr needle bearing manufacturer, supplier and factory, please feel free to contact Weinuo Machinery.NATR series Track Roller Bearing contains outer ring ,inner ring ,needle retainer assembly and the retaining ringswhich are pressed and fixed by the two sides of inner ring. NATR...pp series has an additional sealing ring.This kind of yoke type track rollers have huge lubricant storage space ,so they can be used for long period without re-grease.NATR series is single row  with axial guidance, gap sealed on both sides