... Bearing’s Functions: aTapered Roller Bearings, according to the low number of rollers, are defined as single row and four ... greater the capacity will be.c.The bearings are mainly used in metallurgy, milling, rolling mills, automobiles, machines, plastics and other industries ... or ABEC7,5,3,15. Material: GCr15, SiMn etc8 feature: low noise, long life ,high precision,9 apply: machine tools, electrical ...