200 mm x 250 mm x 24 mm skf 61840 bearing

SKF Bearing offers a 200 mm x 250 mm x 24 mm skf 61840 bearing selection of Genuine Non Contact Seal Enclosure Type SKF Bearing 0 Weight at Wholesale BEARING DRIVESHAFT,INC. Prices. We are a 200 mm x 250 mm x 24 mm 200 mm x 250 mm x 24 mm skf 61840 bearing Certified Parts Retailer

What is 61840 bearing cross reference？