U320W - Hoffmann Imperial Double Row Self Aligning - 20x52x21mm R&M LLRJB17 the 6904 bearing is built

the 6904 bearing is built for durability and efficient lubrication flow

This 7207A5TRSULP3 bearing is a Super Precision angular contact bearing with a 25° contact angle and a phenolic cage

NU 23 30 E M1 C3 Two Flanges on Outer Ring and No Flanges on Inner Ring Medium

Medium Series 17mm - Bore Size Double Row without Filling Slots Metal Shields On Both Sides Glass Fibre Reinforced PA66 Cage (Polyamide Cage) Normal Internal Clearance Grease with a lithium thickener of consistency 3 to the NLGI Scale for a temperature range –30 to +120 °C

U320W - Hoffmann Imperial Double Row Self Aligning - 20x52x21mm R&M LLRJB17 the 6904 bearing is builtThis U320W is a wide medium, metricseries double row self aligning bearings with a steel cage and a standard internal clearance. The bearing's dimensions are 20x52x21mm.