According to the CPE-2B Parts Manual, for the 38" Timed Mower Deck, here are the Bearings:
Spindle Bearings:
464 347 R91 BEARING ASSY, (4) From 1960 - 1961, Order PKG, 470 849 R91
470 880 R91 BEARING ASSY, (4) From 1962 - 1963
Pulley Bearings:
582 010 R91 BEARING, Pulley (2)