d:  D: B:  
Bearing No.Internal DiameterOutside DiameterWidthCatalogue
77888U 440 620 454 Four Row Series
77888 440 620 454 Four Row Series
77888 440 650 355 Four Row Series
77888K 440 650 355 Four Row Series
381088X2/HG 440 650 355 Four Row Series
DOWNLOAD BROCHURE