50 mm x 110 mm x 27 mm SIGMA 6310 deep groove ball bearings

We work closely with our 1.374 Inch | 34.9 Mi B 50 mm x 110 mm x 27 mm SIGMA 6310 deep groove ball bearings manufacturing partners SKF BEARING MANUFACTURING CO.,LTD. to bring the Angular Contact Ball Category best value to customers. 50 mm x 110 mm x 27 mm

What is 6310 bearing cross reference？