Tapered roller Bearing 31308 size:d=40mm,D=90mm,T=25.25mm,B=23mm The Description of Tapered Roller Bearing------Tapered roller bearing main bear with radial primarily, the axial union ... in automotive, rolling mill, mining, metallurgical, plastic machinery, etc. Tapered roller Bearing 31308 size:d=40mm,D=90mm,T=25.25mm,B=23mm1.material ...