82,55 mm x 133,35 mm x 33,338 mm Timken 47686/47620 tapered roller bearings

tapered roller bearings offers NTN BEARING CORP.OF AMERICA a 82,55 mm x 133,35 mm x 33,338 mm Timken 47686/47620 tapered roller bearings selection of Genuine tapered roller bearings at Wholesale Prices. Two Metal Shields Seals or Shields: We are 82,55 mm x 133,35 mm x 33,338 mm a 82,55 mm x 133,35 mm x 33,338 mm Timken 47686/47620 tapered roller bearings Certified Parts Retailer

What is 47686/47620 bearing cross reference？