RS ------ a ring, with the metric system
2RS ----- for the two seals, with the metric system
P ------- a ring, with the imperial system
PP ------ for two seals, with the imperial system
ASI/OH--- for the hole
HK, BA, TA .. Z - Piercing Needle roller bearings
BK, TAM, TLAM - sealed drawn cup needle roller bearings
F - perforation drawn cup needle roller bearings full
FY, YT - perforation drawn cup needle bearing full complement (grease limit)
FH, YTL - perforation drawn cup needle bearing full complement (Re Series)
MF - sealed drawn cup needle roller bearings full
MFH - sealed drawn cup needle roller bearings full
SCE - Piercing Needle roller bearings
BCE - sealed drawn cup needle roller bearings
SCH - Piercing Needle roller bearings
BCH - sealed drawn cup needle roller bearings
SN - perforation drawn cup needle roller bearings full
B - perforation drawn cup needle roller bearings full
BH - perforation drawn cup needle bearing full complement (Re Series)
M - sealed drawn cup needle roller bearings full
MH - sealed drawn cup needle bearing full complement (Re Series)