Symbols of Bearings

Example: CS6202XXPKWS

C
Ball material:
C=Ceramic (Si3N4)
S=Stainless Steel (440C)
No symbol = Chrome Steel

S
Ring Material:
No symbol = Chrome steel
S=Stainless Steel (440C)
S3=Stainless steel (SS303)
C=Ceramic (Si3N4)
CR=Ceramic (ZrO2)
N=Nylon
P=PEEK
B=Beryllium copper

6202
Size:
Basic size (see bearing size list)

XX 
Closure:
XX=Open (Standard bearing width, no seal)
No symbol=Open (Narrow bearing width, no seal)
TT=PTFE/F-Glass
VT=Virgin PTFE
VV= Non-contact rubber seal
RS= Contact rubber seal
ZZ=Metal shield

PK
Retainer material:
PK=PEEK
PS=PPS
VP1=Vespel SP1
VP3=Vespel SP3
TR=Torlon
PT=PTFE
NY=Nylon
PH=Phenolic
No symbol=Metal

WS
Lubrication:
Dry film lubrication/Coating
   WS=Tungsten Disulfide
    MO=Moly Disulfide
Grease
    L1=SRI, General purpose
    L2=Poly Rex EM, Electric Motor grade
    L3=Krytox, High Temperature
    L4=LVP Krytox, Vacuum
    L5=Kluber NB52, High speed