brg.designation
TRANSCRIPT
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2005-03-24 ©SKF Slide 1SKF [L&D, Company HR]
SKF Bearing
Designations
Bearings in Machine Design
D K Sen
26th – 29th April 2005
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1-04-1! ©SKF Slide 2 [Code]SKF ["#$ani%aion]
ISO standards
InternationalOrganization forStandardization
ISOISO
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1-04-1! ©SKF Slide 3 [Code]SKF ["#$ani%aion]
ISO standards
or Metric Sizeor Metric SizeBearingsBearings
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1-04-1! ©SKF Slide 4 [Code]SKF ["#$ani%aion]
ABMA standards
A!ericanBearing
Man"fact"rers
Association
ABMAABMA
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1-04-1! ©SKF Slide 5 [Code]SKF ["#$ani%aion]
ABMA standards
or Inch Sizeor Inch SizeBearingsBearings
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1-04-1! ©SKF Slide [Code]SKF ["#$ani%aion]
Bearing Designations
Basic Designations S"pple!entar# Designations
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1-04-1! ©SKF Slide ! [Code]SKF ["#$ani%aion]
$he %asic designation identi&es'
( )rod"ct t#pe( Standard design( Size
$he s"pple!entar# designationidenti&es'
( Alternati*e design +*ariants,
( Bearing co!ponents( $#pes of special %earings
Bearing Designations
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-Basic Designation
1-04-1! ©SKF Slide ' [Code]SKF ["#$ani%aion]
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1-04-1! ©SKF Slide ( [Code]SKF ["#$ani%aion]
Metric Designation System
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1-04-1! ©SKF Slide 10 [Code]SKF ["#$ani%aion]
Metric Designation System
.onsists of 5 digits
irst digit denotes Bearing $#pe
Second digit denotes /idth
$hird digit denotes OD
o"rth 1 &fth digits denote ID
eight
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1-04-1! ©SKF Slide 11 [Code]SKF ["#$ani%aion]
Diameter and Width Series
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1-04-1! ©SKF Slide 12 [Code]SKF ["#$ani%aion]
Diameter and Width Series
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1-04-1! ©SKF Slide 13 [Code]SKF ["#$ani%aion]
Cylindrical Roller Bearings
NU NJ NUP
N NU + HJ NJ + HJ
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1-04-1! ©SKF Slide 14 [Code]SKF ["#$ani%aion]
Inch Designation System
L L L L
Bearingt#pe
Bearingseries
Bore-34s
of inch
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1-04-1! ©SKF Slide 15 [Code]SKF ["#$ani%aion]
Standard Inch Size Bearing Types
DBB
A.BB
SABB
.B
7S MS
A7S AMS
7 M
.7 .M
7 ' light series M ' !edi"! series
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1-04-1! ©SKF Slide 1 [Code]SKF ["#$ani%aion]
Inch Size TRB
Inch taper rollerbearings are designed
around roller & cageassemblies, and belongto families
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1-04-1! ©SKF Slide 1! [Code]SKF ["#$ani%aion]
Inch Designation System
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2SpplementaryDesignations !
1-04-1! ©SKF Slide 1' [Code]SKF ["#$ani%aion]
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1-04-1! ©SKF Slide 1( [Code]SKF ["#$ani%aion]
S"pple!entar# designation consist
)re&8es
S"8es
Spplementary Designations !
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1-04-1! ©SKF Slide 20 [Code]SKF ["#$ani%aion]
:sed to identif# co!ponents of a %eari :s"all# follo;ed %# the %earing design
"re#$es o% Metric Size Bearings!
S o"sing ;asher of a .#lindrical roller thr"st
%earingK .#lindrical roller and cage thr"st asse!%l#7 Separate inner or o"ter ring of a separa%le%earing Inner or o"ter ring ;ith roller 1 cage
asse!%l# of a separa%le %earing/ Stainless Steel deep groo*e %all %earing/S Shaft ;asher of a c#lindrical roller thr"st%earing
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1-04-1! ©SKF Slide 21 [Code]SKF ["#$ani%aion]
S&$es o% Metric Size Bearings!
S"8es identif#'
( ?ariants – de*iations fro! standard design
( ro"ped into fo"r categories
( Added to %asic designation in a speci&corder@ ;here
!ore than one de*iation applies
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1-04-1! ©SKF Slide 22 [Code]SKF ["#$ani%aion]
S&$es o% Metric Size Bearings!
.ategor# - ' Modi&ed InternalDesign
.ategor# 2 ' Modi&ed =8ternalDesign
.ategor# ' Modi&ed .age Design
.ategor# ' Modi&cations toenhance )erfor!ance
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1-04-1! ©SKF Slide 23 [Code]SKF ["#$ani%aion]
A A.
B B=
. and co!%inations thereof
.A.B...A.
D
= =.
S&$ Category '! Modi#ed InternalDesign
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1-04-1! ©SKF Slide 24 [Code]SKF ["#$ani%aion]
S&$ Category '! Modi#ed InternalDesign
A ' C $ransitional Designation changed later eg@ 2-0 A ' DDBB ;itho"t &lling sl C .ontact Angle 00 in SA.BB
eg@ E056 A
B ' C .ontact Angle 00 in SA.BB eg@ E2-0 B C Steep .ontact Angle in $B eg@ 22-0 B
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1-04-1! ©SKF Slide 25 [Code]SKF ["#$ani%aion]
S&$ Category '! Modi#ed InternalDesign
. ' C .ontact Angle -50 in SA.BB eg@ E0-2 .
C SB ;ith loose "ide lange @ s#!!et
rollers 1 pressed steel cage of ;indo
A. 'C .ontact Angle 250 in SA.BB eg@ E2-0 A. D 'C DA.BB ;ith t;o part Inner ing and
.ontact Angle of 50
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1-04-1! ©SKF Slide 2 [Code]SKF ["#$ani%aion]
S&$ Category '! Modi#ed InternalDesign
= ' C 7arger %all or oller dia!eter eg@ 2920 =
.A ' C SB ;ith loose g"ide ring %"t t;o integra ;ith !achined %rass cage eg@ 2-30 .A C A.BB for "ni*ersal !o"nting ;ith lo; a8 clearance ;hen !o"nted in pair
.A.' C SB of .A design %"t ;ith i!pro*ed rolle g"idance
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1-04-1! ©SKF Slide 2! [Code]SKF ["#$ani%aion]
S&$ Category '! Modi#ed InternalDesign
.B ' C A.BB for "ni*ersal !o"nting ;ith a8ialclearance larger than .A ;hen !o"nted
.. ' C A.BB for "ni*ersal !o"nting ;ith a8ial
clearance larger than .B ;hen !o"nted C SB of . design %"t ;ith i!pro*ed rolle g"idance
=. ' C Single o; .B ;ith a greater n"!%er of
larger rollers than the original design@ a increased a8ial load carr#ing capacit# in
langed e8ec"tions
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1-04-1! ©SKF Slide 2' [Code]SKF ["#$ani%aion]
S&$ Category '! Modi#ed InternalDesign
A ' C A.BB for "ni*ersal !o"nting ;ith ligh preload ;hen !o"nted in pair
B ' C A.BB for "ni*ersal !o"nting ;ith a8ia preload larger than A ;hen !o"nte . ' C A.BB for "ni*ersal !o"nting ;ith a8ia
preload larger than B ;hen !o"nte
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1-04-1! ©SKF Slide 2( [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
S"8 K
S"8K0
$aper -'-2
$aper -'0
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1-04-1! ©SKF Slide 30 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
K ' C $apered Bore + $aper - ' -2 ,K 0 ' C $apered Bore + $aper - ' 0 ,G ' C Snap ring groo*e on %earing o"ter dia!G- ' C One locating slot on o"tside edge of o"tG2 ' C $;o dia!etricall# opposite locating slot o"tside edge of o"ter ringG ' C G H G2 7ocating slots on side opposite
snap ring groo*eG6 ' C G H G2 7ocating slots on sa!e side as s
ring groo*eG ' C Snap ring groo*e on %earing o"ter dia! along ;ith an appropriate snap ring
& di# d l
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1-04-1! ©SKF Slide 31 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
) ' C SB ;ith t;o part o"ter ring
) ' C SB ;ith t;o part o"ter ring@ ;ith cali% spacer in %et;een
' C Integral Fange on o"ter ring o"ter dia C .ro;ned r"nner s"rface +$rac r"nner
J ' C One or !ore of %earing e8ternal di!en
altered to f"ll# co!pl# ;ith ISO stan
S & C ( M di# d ) l
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1-04-1! ©SKF Slide 32 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
Shields and Seals
Shield *o+,%riction Seal Contact Seal
RS* RS* R-- RS.RS. RS'
S & C t ( M di# d ) t l
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1-04-1! ©SKF Slide 33 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
S ' C .ontact seal of s#nthetic r"%%er ;ith or;itho"t sheet steel reinforce!ent on one
2S ' C .ontact seals of s#nthetic r"%%er ;ith sh steel reinforce!ent on t;o sides
S- ' C .ontact seal of acr#lonitrile %"tadiene r" +GB, ;ith sheet steel reinforce!ent on o
2S-' C .ontact seal of acr#lonitrile %"tadiene r" +GB, ;ith sheet steel reinforce!ent on t
S-
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1-04-1! ©SKF Slide 34 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
S2 ' C .ontact seal of F"oro r"%%er +)M, ;ithsteel reinforce!ent on one side
2S2' C .ontact seal of F"oro r"%%er +)M, ;it steel reinforce!ent on t;o sides
S ' C .ontact seal of acr#lonitrile %"tadiene+GB, ;ith sheet steel reinforce!ent o
side2S' C .ontact seal of acr#lonitrile %"tadiene
+GB, ;ith sheet steel reinforce!ent o sides
S & C t ( M di# d ) t l
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1-04-1! ©SKFSlide 35 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
S7 ' C 7o; friction contact seal of acr#lonitrile%"tadiene r"%%er +GB, ;ith sheet stee
reinforce!ent on one side2S7' C 7o; friction contact seal of acr#lonitril %"tadiene r"%%er +GB, ;ith sheet st reinforce!ent on t;o sides< ' C 7o; friction seal of acr#lonitrile %"tadi r"%%er +GB, ;ith sheet steel reinforc on one side
2< ' C 7o; friction seal of acr#lonitrile %"tadi r"%%er +GB, ;ith sheet steel reinforce
on t;o sides
S & C t ( M di# d ) t l
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1-04-1! ©SKFSlide 3 [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
eL"ire!ent Shields 7o;friction seals .ontact seals
< S7 < S S-
7o; friction HHH HH HHH o o
igh speeds HHH HHH HHH o o
rease retention o HHH H HHH HH
D"st e8cl"sion o HH H HHH HHH
/ater e8cl"sion
static o HHH HH
d#na!ic o H H
high press"re o HHH o
S#!%ols ' HHH e8cellent HH *er# good H good o fair notreco!!ended
S & C t ( M di# d ) t l
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1-04-1! ©SKFSlide 3! [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
ICOS oil sealed /earing nits
Designation ! ICOS 0 D'B$$,T12
S & C t ( M di# d ) t l
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1-04-1! ©SKF Slide 3' [Code]SKF ["#$ani%aion]
S&$ Category (! Modi#ed )$ternalDesign
< ' C Shield of pressed sheet steel &ttedon one side
2< ' C Shield of pressed sheet steel &ttedon t;o sides
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1-04-1! ©SKF Slide 3( [Code]SKF ["#$ani%aion]
S&$ Category 3! Modi#ed Cage Design
Cage Centering Types
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1-04-1! ©SKF Slide 40 [Code]SKF ["#$ani%aion]
S&$ Category 3! Modi#ed Cage Design
' C Machined Steel or S Iron cageA ' C .age centred on o"ter ring
B ' C .age centred on inner ring
= ' C Machined Steel .age phosphated ' C )ressed cage of hardened sheetsteel ' C )ressed cage of "nhardenedsheet steel
A ' C .age centred on o"ter ring = ' C .age phosphated7 ' C Machined light allo# cage7A ' C 7 .age centred on o"ter ring
C
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1-04-1! ©SKF Slide 41 [Code]SKF ["#$ani%aion]
S&$ Category 3! Modi#ed Cage Design
M ' C Machined %rass cage centred onrollersMA ' C M cage centred on o"ter ring
MB ' C M cage centred on inner ringM7 ' C One piece %rass ;indo; t#pe cage
centred on inner or o"ter ringM) ' C One piece %rass ;indo; t#pe cage@
;ith p"nched or rea!ed pocets@centred on inner or o"ter ring
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1-04-1! ©SKF Slide 42 [Code]SKF ["#$ani%aion]
) ' C Mo"lded cage !ade of glass&%re reinforced pol#a!ide 66
$G ' C Mo"lded cage !ade of plastic
N ' C )ressed Brass cage
? ' C "ll co!ple!ent %earing+ ;itho"t cage ,
S&$ Category 3! Modi#ed Cage Design
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 43 [Code]SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
.7EA ' C Standard SK L"alit# for )inion B.7E. ' C Special SK L"alit# for )inion Be
.G ' C Gor!al internal clearance $his "s"all
follo;ed %# M7) to denote partdisplaced range eg' .G ' C :pper half of Gor!al
.GM ' C $;o !iddle L"arters of Gor! .G7 ' C 7o;er half of Gor!al
.G) ' C :pper half of Gor!al 17o;er half of .
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 44 [Code]SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
.- ' C Internal clearance less than .2.2 ' C Internal clearance less than Gor!al
. ' C Internal clearance !ore than Gor!al. ' C Internal clearance !ore than ..5 ' C Internal clearance !ore than .
A letter M7) follo;ing the clearanc designation denotes part or displaced
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Internal Clearance
1-04-1! ©SKF Slide 45 [Code]SKF ["#$ani%aion]
.- clearance less than C(
.2 clearance less than 1ormal
. clearance greater than1ormal. clearance greater than C3.5 clearance greater than C4
adial internal clearance
Axial internal clearance
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In5encing "arameters
1-04-1! ©SKF Slide 4 [Code]
SKF ["#$ani%aion]
COLD
WARM
it
eat
Speed
7oad
Expansion
Compression
Reducedradial
clearance
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)6ect on Bearing *i%e
1-04-1! ©SKF Slide 4! [Code]
SKF ["#$ani%aion]
Relati7e /asic rating li%e *'89 :
"reloading Clearance
*oad Distri/tion de to Clearance
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*oad Distri/tion de to ClearanceChanges
1-04-1! ©SKF Slide 4' [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 4( [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
.0- ' C ed"ced tolerance for r"nningacc"rac# of I.02 ' C =8tra red"ced tolerance for r"nningacc"rac#
of I ' less than .0-.0 ' C ed"ced tolerance for r"nningacc"rac# of O.0 ' C =8tra red"ced tolerance for r"nningacc"rac#
of O ' less than .0
.05 ' C .0- H .0.06 ' C .02 H .0
.0E ' C .0- H .0
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 50 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
.-0 ' C ed"ced tolerance for %ore 1 ODIn case of tapered %ore@ refers to
onl# OD
.20 ' C Bore dia!eter tolerance less than.-0.0 ' C ed"ced %ore dia!eter tolerance@to;ards
standard !ini!"! li!it.0 ' C OD tolerance less than .-0
.50 ' C ed"ced OD tolerance@ to;ardsstandard !ini!"! li!it
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 51 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
.60 ' C .20 H .50.E0 ' C .20 H .0.30 ' C ed"ced heighttolerancefor thr"st %earings.-5 ' C .-0 H .05.-3 ' C .-0 H .03
.E3 ' C .E0 H .03
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 52 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
/DB : * Two single row DGBB/ACBB/TRB, paired for mounting in backtoback arrangement!
/D" : * Two single row DGBB/ACBB/TRB, paired
for mounting in facetoface arrangement!
/DT : * Two single row DGBB/ACBB/TRB, paired
for mounting in tandem
/#A : * Case $ardened bearing or bearing components!
"or closer identification, it is followed b% one of
following numbers : &/'/(/)//+//- e!g!,
' Bot$ rings ( .uter ring
+ Rolling elements etc!
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 53 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
$ ' C Bearing s"pplied ;ith igh $e!perat + "pto H-00 ., grease7$ ' C Bearing s"pplied ;ith 7o; as ;ell as
$e!perat"re + 0 to H-00
., grea7$ ' C Bearing s"pplied ;ith 7o; $e!perat" + "pto 500 ., greaseM$ ' C Bearing s"pplied ;ith Medi"! $e!pe + 0 to H--00 ., grease
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SKF ;reases %or sealed D;BB
1-04-1! ©SKF Slide 54 [Code]
SKF ["#$ani%aion]
$echnical Standard greases Special greases
speci&cations
7$-0 M$E M$ G $22 7$20 /B 7$2
$hicener 7ithi"!
7ithi"! 7ithi"! )ol#"rea
7ithi"! 7ithi"! )ol#"rea
7ithi"!soap soap soap soap co!ple
8soap soap soap
soap
Base oil t#pe Diester oil
Mineraloil
Mineraloil
Mineraloil
Mineraloil
Diesteroil
=steroil
=steroil
G7Iconsistenc#
2 2 2 2 2 2
class
Operating 50 toH90 0 toH--0 0 toH-20 0 toH-50 20 toH-0 55 toH--0 0 toH-60 50 toH-0te!perat"re@.
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;rease #lling degree
1-04-1! ©SKF Slide 55 [Code]
SKF ["#$ani%aion]
grease
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Main grease #lling degrees
1-04-1! ©SKF Slide 5 [Code]
SKF ["#$ani%aion]
7ary %rom '8 to '88 : o% the %ree 7olme
identi#ed /y a digit %rom ' to 2
1ormal ! (> , 3> :
Special !
'8 , '> : ?'8 , (8 : +hen d@'8 mm code ' A
4> , 8 : code B
8 , '88 : code 2 C
#ll ?related to ns+ept 7olme code >
S ; % l d ;
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SKF ;reases %or sealed D;BB
1-04-1! ©SKF Slide 5! [Code]
SKF ["#$ani%aion]
no grease s&$
standard grease
standard grease #lling degree
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 5' [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
) ' C Di!ensional and r"nning acc"rac# to IS tolerance class )A ' C Di!ensional acc"rac# to ISO tolerance c and and r"nning acc"rac# to ABMA)5 ' C Di!ensional and r"nning acc"rac# to IS
tolerance class 5 + More acc"rate tha)6 ' C Di!ensional and r"nning acc"rac# to IS tolerance class 6) ' C ) H .
)52 ' C )5 H .2)62 ' C )6 H .2)A9 ' C Di!ensional and r"nning acc"rac# to A
class 9
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" i i l
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"recision class
1-04-1! ©SKF Slide 0 [Code]
SKF ["#$ani%aion]
1µ
How much is a µ?
Ahumanhair
0,06 mmStandard
High precisionbearing
Precisionbearing
Normal
P6 P6
SP
P4A
UP
PA9A
PA9B
Tolerance
classes
0/-15 µm0/-12 µm
0/-9 µm 0/-7 µm0/-2,5 µm
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 1 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
S) ' C Special )recision@ di!ensional acc"rac# a
corresponding to )5 and r"nning acc"rac appro8 to )S0 ' C Bearing ring di!ensionall# sta%ilized to o
te!perat"res "pto H -500.
S- ' C Bearing ring di!ensionall# sta%ilized to o te!perat"res "pto H 2000.S2 ' C Bearing ring di!ensionall# sta%ilized to o
te!perat"res "pto H 2500.S ' C Bearing ring di!ensionall# sta%ilized to o
te!perat"res "pto H 000.S ' C Bearing ring di!ensionall# sta%ilized to o
te!perat"res "pto H 500.
Category 4! Modi#cations to enhance
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1-04-1! ©SKF Slide 2 [Code]
SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
:) ' C :ltra )recision@ di!ensional acc"rac# ap corresponding to ) and r"nning acc"rac
%etter than )/20' C $hree l"%rication holes in o"ter ring
/' C 7"%ricating groo*e and three l"%ricationin o"ter ring?8888' C ? pl"s a second letter follo;ed %# a thr n"!%er denoting *ariants not co*ered
PlogicalQ s"pple!entar# designations
?A 20- ' Bearings for Kiln $r"cs ?A 0- ' Bearings for $raction Motors
Category 4! Modi#cations to enhance
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SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
? n"!%er speci&cations '
(?A ' Application oriented *arients(?B ' Bo"ndar# di!ension de*iations(?. ' Material andor heat treat!ent @ !ainl#
hardening(?= ' =8ternal and also so!e internal de*iations(? ' Other *ariants referred to %efore hard!achining(?' .age *ariants +other than co*ered "nder
? ,(?' eat treat!ent after hardening(?' Matched %earing sets
+single %earings prepared for pairing,(?K' Maring 1 pacaging(?7' Special s"rface or s"rface treat!ent –
!echanical@ che!ical @ etc
Category 4! Modi#cations to enhance
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SKF ["#$ani%aion]
Category 4! Modi#cations to enhance"er%ormance
? n"!%er speci&cations '
(?M ' Asse!%ling prescriptions(?) ' Sealed @ shielded(?R ' R"alit# @ di!ensions @ acc"rac# @ *i%ration@
torL"e test(? ' inal inspection eL"iring certi&cates@ safet#acts etc(?S ' .learance and preload(?$' 7"%rication(?:' Other *ariants referred to grinding andasse!%ling(?/' Man"fact"ring stages on %earing parts(?J' Bearing parts not referred to in %earingdesignations(?
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SKF ["#$ani%aion]
g y"er%ormance
/here t;o s"8es follo; one another@ the&rst
ending ;ith a &g"re and the second
starting ;ith
one@ a stroe is to %e "sed
eg' 6-0 . 6025-
Category 4! Modi#cations to enhance
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SKF ["#$ani%aion]
g y"er%ormance
/here a s"8 for a di*ided clearance rangeis follo;ed %# a s"8 for t#pe of grease@ a
stroe is to %e "sedeg ' 62052
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SKF ["#$ani%aion]
g y"er%ormance
$he seL"ence of categor# s"8es isas follo;s '
- Materials @ heat treat!ent
2 )recision @ clearance @ L"ietr"nning
Bearing sets @ paired %earings
Sta%ilization
5 7"%rication
6 Other *ariants
Bearing Designations
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Bearing Designations
$he seL"ence of ;riting the
designations'
( )re&8 – if an#
( Basic designation
( S"pple!entar# designation of categor# -
( S"pple!entar# designation of categor# 2
( S"pple!entar# designation of categor#
( Stroe
( S"pple!entar# designation of categor#
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Other Designations
SKF ["#$ani%aion]
1-04-1! ©SKF Slide ( [Code]
Date Codes
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Date Codes
1-04-1! ©SKF Slide !0 [Code]
SKF ["#$ani%aion]
Letter Year Year Year Year Letter Year Year Year Year
A 1910 1934 1958 1981 N 1922 1946 1970 1993B 1911 1935 1959 1982 O 1923 1947 1971 1994
C 1912 1936 1960 1983 P 1924 1948 1972 1995D 1913 1937 1961 1984 R 1925 1949 1973 1996E 1914 1938 1962 1985 S 1926 1950 1974 1997F 1915 1939 1963 1986 T 1927 1951 1975 1998
G 1916 1940 1964 1987 U 1928 1952 1976 1999E 1917 1941 1965 1988 V 1929 1953 – –J 1918 1942 1966 1989 W 1930 1954 1977 2000
K 1919 1943 1967 1990 X 1931 1955 1978 2001L 1920 1944 1968 1991 Y 1932 1956 1979 2002M 1921 1945 1969 1992 Z 1933 1957 1980 2003
The Year Letter to be marked on a bearing or a bearing accessory shallcomprise a single letter in accordance with the table below
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