http://www.bearingde.com/roller-bearing/aligning-roller-bearings/ Double roller Aligning bearings are bearings with high radial load capacity, its self-aligning performance is good, and it can compensate the coaxiality error. Application Double Row Aligning Roller Bearing are widely used in agriculture, mining, petroleum, heavy machinery,paper making, printing machinery etc. Product NameDouble Row Aligning Roller Bearings FeatureSelf aligning roller bearings MaterialChrome steel ; Stainless steel; Plastic ;Nylon;Ceramic SizeInner dia * Outer dia* Thickness; Non-standard; Customized TechnologyCasting& Machining Precision GradeP0 P6 P5 P4 P2 are all available HardnessHrc60-65 CageSteel ; Brass; Stainless Steel StructureSingle row ; Doulbe row; 4 row ServiceOEM, Customized PackagingCartons & Plywood CasesWholesale Aligning Roller Bearings website:http://www.bearingde.com/roller-bearing/aligning-roller-bearings/