12,700 / mm x 33,32 / mm x 12,70 / mm IKO PHSB 8 plain bearings

plain bearings FAG BEARING LIMITED offers a 12,700 / mm x 33,32 / mm x 12,70 / mm IKO PHSB 8 plain bearings 7800 RPM maximum rpm: selection of Genuine plain bearings at Wholesale Prices. We are a 12,700 / mm x 33,32 / mm x 12,70 / mm IKO PHSB 8 plain bearings Certified 12,700 / mm x 33,32 / mm x 12,70 / mm Parts Retailer

What is PHSB 8 bearing interchange？