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Bearing Numbering System

//Bearing Numbering System
Bearing Numbering System 2017-03-11T15:34:46+08:00
materialbearing typebearing part No.cageshields/sealsradial clearancetolerance class
H688JZZMC3
F608TW2RSMC4P6
MR52WZZMC2P5
SMF128WTTSMC3P6
SER1458WZZSC0A3
H6205RJ2RSC3
F6706W2RUC0
SR144JZZSMC4A5P
R10RJZZC2
F3-8MTP

material:

no symbol=chrome steel GCr15/SAE52100/DIN100Cr6/SUJ2
H=metric series stainless steel
S=inch series or MR series stainless steel

bearing type:

R=inch
FR=inch with flange
RW=inch with extended inner ring
FRW=inch with extended inner ring and flange
no symol=metric standard
F=metric with flange
MR=special metric
MF=special metric with flange

cage:

J=steel ribbon type
W=steel crown type
TW=nylon crown type
RJ=riveted steel ribbon type
V=full complement
TA=phenolic resin full machine, outer ring guided
TB=phenolic resin full machine, inner ring guided

shields/seals:

ZZ=pressed steel shields(non-removable), Z is single shield.
2RS=contact rubber seals, RS is single seal.
2RU=non-contact rubber seals, RU is single seal.
ZZS=steel shields with snap ring
TTS=teflon seals with snap ring

radial clearance:

standard ball bearings: C2, C0(CN), C3, C4, C5
miniature ball bearings: MC1, MC2, MC3, MC4, MC5, MC6

tolerance class:

ABEC-1(P0), ABEC-3(P6), ABEC-5(P5), ABEC-7(P4), ABEC-9(P2)