... the areas of airplane, expresstrain, robot, NC machinery, ship, engineering machinery, and bearing.specification1)diameter:1-500mm2)length:2- ... C at sightApplicationUsed in airplane, expresstrain, robot, NC machinery, ship, engineering machinery, and bearing. PackagingBrand original package others according to ... contact me at any time. 2012 year low sales flate shape NR needle roller ,needle bearing