1.Machine tapered roller bearing skf 2.Precision: p0,p6,p5,p4,p2 3 ... specification:types:single row ,double row and four row taper roller bearingdimension range:inner diameter:15mm,outer diameter 380mmmain models:30000 ... ' main shafts, big power reduction gears, axletree axle boxes, roller wheels of transportation devices, and the supporting rollers and working ... 6322223231530206tapered roller bearing skf ...