2.438 Inch | 61.925 Millimeter x 1.909 Inch | 48.489 Millimeter x 2.75 Inch | 69.85 Millimeter HUB CITY PB251 X 2-7/16 Pillow Block Bearings

HUB CITY Bearings offers BEARING Machinery Equipment Co.,Ltd.OF USA a 2.438 Inch | 61.925 Millimeter x 1.909 Inch | 48.489 Millimeter x 2.75 Inch | 69.85 Millimeter HUB CITY PB251 X 2-7/16 Pillow Block Bearings selection of Genuine HUB CITY Bearings at Wholesale Prices. We are a 2.438 Inch | 61.925 Millimeter x 1.909 Inch | 48.489 Millimeter x 2.75 Inch | 69.85 Millimeter HUB CITY PB251 X 2-7/16 Pillow Block Bearings 2.438 Inch | 61.925 Millimeter x 1.909 Inch | 48.489 Millimeter x 2.75 Inch | 69.85 Millimeter Certified Parts Retailer

What is PB251 X 2-7/16 bearing cross reference？