... Low noise,long life,single row 4.Precision level:P0,P4,P5, high precision SKF Needle Roller Bearing1. Strong abrasion ... . 4. Low noise, long life 5. High Precision and load capacity. 6. Various types are available ... machines MaterialsChrome steel, Carbon steel, Stai GCr15, High Carbon steel GCr-11, and so on FeatureNeedle ... an outer race(sometimes housing itself). high precision SKF Needle Roller Bearing