B R I T I S H S T A N D A R D B S E N
12082:2007
R a i l w a y a p p l i c a t i o n s —
A x l e b o x e s —
P e r fo r m a n c e t e s t i n g
T h e E u r o p e a n S t a n d a r d E N 12082:2007 h a s t h e s t a t u s o f a
B r i t i s h S t a n d a r d
I C S45.040
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12,&23<,1*,:,7+287,%6,,3(50,66,21,(;&(37,$6,3(50,77(',%<,&23<5,*+7,/$:
C opyrig ht Britis h S ta nda rds Ins titution
P rovide d by IHS unde r lice ns e with BS I - Uncontrolle d C opy
Not for R e s a le
No re production or ne tworking pe rmitte d without lice ns e from IHS
B S E N 12082:2007
T h i s B r i t i s h S t a n d a r d w a s
p u b l i s h e d u n d e r t h e a u t h o r i t y o f t h e S t a n d a r d s P o l i c y a n d
S t r a t e g y C o m m i t t e e
o n31J a n u a r y2008
?B S I2008
I S B N9780580583575N a t i o n a l f o r e w o r d
T h i s B r i t i s h S t a n d a r d i s t h e U K i m p l e m e n t a t i o n o f E N 12082:2007. I t
s u p e r s e d e s B S E N 12082:1998 w h i c h i s w i t h d r a w n.
T h e U K p a r t i c i p a t i o n i n i t s p r e p a r a t i o n w a s e n t r u s t e d b y T e c h n i c a l C o m m i t t e e R A E/3, R a i l w a y r o l l i n g s t o c k m a t e r i a l, t o P a n e l R A E/3/-/2, R o l l i n g b e a r i n g s
a n d l u
b r i
c a n t s.
A l i s t o f o r g a n i z a t i o n s r e p r e s e n t e d o n t h i s c o m m i t t e e c a n b e o b t a i n e d o n
r e q u e s t t o i t s s e c r e t a r y.
“N o r m a t i v e” A (m a n d a t o r y) r e q u i r e m e n t d e fi n e d a s a n e x p r e s s i o n i n t h e
c o n t e n t o f a
d o c u m
e n t c o n v e y i n g c r i t e r i a t o b e fu l fi l l e d i
f c o m p l i a n c e w i t h t h e
d o c u m
e n t i s t o b e c l a i m e d a n d fr o m w h i c h n o d e v i a t i o n i s p e r m i t t e d
[C E N/C E N E L E C I n t e r n a l R e g u l a t i o n s, P a r t 3: R u l e s fo r t h e S t r u c t u r e a n d
D r a ft i n g o f
E u r o p e a n S t a n d a r d s (P N E-R u l e s)]. “I n fo r m a t i v e” I n fo r m a t i o n (n o t m a n d a t o r y) i n t e n d e d t o a s s i s t t h e u n d e r s t a n d i n g o r u s e o f t h e d o c u m e n t.
I n fo r m a t i v e a n n e x e s s h a l l n o t c o n t a i n r e q u i r e m e n t s, e x c e p t a s o p t i o n a l
r e q u i r e m e n t s. (F o r e x a m p l e, a t e s t m e t h o d t h a t i s o p t i o n a l m a y c o n t a i n
r e q u i r e m e n t s b u t t h e r e i s n o n e e d t o c o m p l y w i t h t h e s e r e q u i r e m e n t s t o c l a i m c o m p l i a n c e w i t h t h e d o c u m e n t.)
T h i s p u b l i c a t i o n d o e s n o t p u r p o r t t o i n c l u d e a l l t h e n e c e s s a r y p r o v i s i o n s o f a c o n t r a c t. U s e r s a r e r e s p o n s i b l e fo r i t s c o r r e c t a p p l i c a t i o n.
C o m p l i a n c e w i t h a B r i t i s h S t a n d a r d c a n n o t c o n f e r i m m u n i t y f r o m
l e g a l o b l i g a t i o n s.
A m e n d m e n t s/c o r r i g e n d a i s s u e d s i n c e p u b l i c a t i o n
D a t e C o m m e n t s
C opyrig ht Britis h S ta nda rds Ins titution
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EUR OP EAN S TANDAR D NOR ME EUR OPéENNE EUR OP?IS C HE NOR M EN 12082 D e c e m b e r 2007
IC S 45.040S upe rs e de s EN 12082:1998
E n g lis h V e rs io n
R a ilwa y a pplica tions - Axle boxe s - P e rforma nce te s ting
Applica tions fe rrovia ire s - Bo?te s d'e s s ie ux - Es s a is de
pe rform a nce s Ba hna nwe ndung e n - R a ds a tzla g e r - P rüfung de s
Le is tung s ve rm?g e ns
This Europe a n S ta nda rd wa s a pprove d by C EN on 8 Nove mbe r 2007.
C EN me mbe rs a re bound to com ply with the C EN/C ENELEC Inte rna l R e g ula tions which s tipula te the conditions for g iving this Europe a n
S ta nda rd the s ta tus of a na tiona l s ta nda rd without a ny a lte ra tion. Up-to-da te lis ts a nd bibliog ra phica l re fe re nce s conce rning s uch na tiona l
s ta nda rds m a y be obta ine d on a pplica tion to the C EN Ma na g e me nt C e ntre or to a ny C EN me mbe r.
This Europe a n S ta nda rd e xis ts in thre e officia l ve rs ions (Eng lis h, Fre nch, Ge rma n). A ve rs ion in a ny othe r la ng ua g e ma de by tra ns la tion
unde r the re s pons ibility of a C EN m e mbe r into its own la ng ua g e a nd notifie d to the C EN Ma na g e me nt C e ntre ha s the s a m e s ta tus a s the
offic ia l ve rs ions.
C EN me mbe rs a re the na tiona l s ta nda rds bodie s of Aus tria, Be lg ium, Bulg a ria, C yprus, C ze ch R e public, De nm a rk, Es tonia, Finla nd,
Fra nce, Ge rma ny, Gre e ce, Hung a ry, Ice la nd, Ire la nd, Ita ly, La tvia, Lithua nia, Luxe m bourg, Ma lta, Ne the rla nds, Norwa y, P ola nd, P ortug a l,
R oma nia, S lova kia, S love nia, S pa in, S we de n, S witze rla nd a nd Unite d King dom.
EU R OP EA N C OM M IT T EE FOR S T A NDA R DIZA T ION
C O M I TéE U R O PéE N
D
E N O R M A L I S A T I O N
E U R O P?I S C H E S K O M I T E E FüR N O R M U N G
Ma n a g e m e n t C e n tre: ru e d e S ta s s a rt, 36 B-1050 B ru s s e ls
? 2007 C EN All rig hts of e xploita tion in a ny form a nd by a ny m e a ns re s e rve d
worldwide for C EN na tiona l Me mbe rs.
R e f. No. EN 12082:2007: E
C opyrig ht Britis h S ta nda rds Ins titution
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EN 12082:2007 (E)
2
C o n te n ts P a g e
F o r e w o r d (3)
In t r o d u c t i o n (4)
1 S c o p e (5)
2 N o r m a t i v e r e f e r e n c e s (5)
3 T e r m s a n d d e fi n i t i o n s (5)
4 In fo r m a t i o n a n d c o n d i t i o n s t o b e a g r e e d a n d d o c u m e n t e d (6)
5 W a t e r t i g h t n e s s t e s t (7)
6 R i g p e r fo r m a n c e t e s t (7)
6.1 G e n e r a l (7)
6.2 E x e c u t i o n (7)
6.3 C a r r y i n g o u t t h e t e s t (9)
6.4 A c c e p t a n c e c r i t e r i a (10)
6.5 R i g t e s t r e p o r t (11)
7 F i e l d t e s t (11)
7.1 G e n e r a l (11)
7.2 C a r r y i n g o u t t h e t e s t (11)
7.3 T e s t p a r a m e t e r s (11)
7.4 A c c e p t a n c e c r i t e r i a (12)
7.5 F i e l d t e s t r e p o r t (12)
A n n e x A (n o r m a t i v e ) R i g p e r fo r m a n c e t e s t (13)
A.1 S c h e m a t i c e x a m p l e o f t e s t r i g (13)
A.2 T e m p e r a t u r e m e a s u r e m e n t (14)
A.3 G r e a s e s a m p l i n g z o n e s (17)
A.4 D e fi n i t i o n o f l o a d i n g (18)
A.5 D e fi n i t i o n o f t e s t c y c l e s (19)
A.6 G r a p h i c a l p r e s e n t a t i o n o f t e s t c y c l e s (20)
A.7 T e m p e r a t u r e c r i t e r i a (21)
A.8 M e c h a n i c a l a n d p h y s i c o -c h e m i c a l a c c e p t a n c e c r i t e r i a (22)
A.9 W a t e r t i g h t n e s s t e s t..............................................................................................................................23 A n n e x Z A (i n fo r m a t i v e ) R e l a t i o n s h i p b e t w e e n t h i s E u r o p e a n S t a n d a r d a n d t h e E s s e n t i a l
R e q u i r e m e n t s o f E U D i r e c t i v e 96/48/E C o f t h e E u r o p e a n P a r l i a m e n t a n d o f t h e C o u n c i l o f
23 J u l y 1996 o n t h e i n t e r o p e r a b i l i t y o f t h e t r a n s -E u r o p e a n H i g h -s p e e d r a i l s y s t e m , a s
m o d i fi e d b y E U D i r e c t i v e 2004/50/E C o f 29 A p r i l 2004....................................................................25 A n n e x Z B (i n fo r m a t i v e ) R e l a t i o n s h i p b e t w e e n t h i s E u r o p e a n S t a n d a r d a n d t h e E s s e n t i a l
R e q u i r e m e n t s o f E U D i r e c t i v e 2001/16/E C o f t h e E u r o p e a n P a r l i a m e n t a n d o f t h e C o u n c i l
o f 19 M a r c h 2001 o n t h e i n t e r o p e r a b i l i t y o f t h e t r a n s -E u r o p e a n c o n v e n t i o n a l r a i l s y s t e m ,
a s m o d i fi e d b y E U D i r e c t i v e 2004/50/E C o f 29 A p r i l 2004 (26)
B i b l i o g r a p h y ......................................................................................................................................................28
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3
Fo re w o rd
T h is d o c u m e n t (E N 12082:2007) h a s b e e n p re p a re d b y T e c h n ic a l C o m m itte e C E N /T C 256 “R a ilw a y a p p lic a tio n s ”, th e s e c re ta ria t o f w h ic h is h e ld b y D IN.
T h is E u ro p e a n S ta n d a rd s h a ll b e g iv e n th e s ta tu s o f a n a tio n a l s ta n d a rd , e ith e r b y p u b lic a tio n o f a n id e n tic a l te x t o r b y e n d o rs e m e n t, a t th e la te s t b y J u n e 2008, a n d c o n flic tin g n a tio n a l s ta n d a rd s s h a ll b e w ith d ra w n a t th e la te s t b y J u n e 2008.
T h is d o c u m e n t s u p e rs e d e s E N 12082:1998.
T h is E u ro p e a n S ta n d a rd h a s b e e n p re p a re d u n d e r a m a n d a te g iv e n to C E N /C E N E L E C /E T S I b y th e E u ro p e a n C o m m is s io n a n d th e E u ro p e a n F re e T ra d e A s s o c ia tio n to s u p p o rt E s s e n tia l R e q u ire m e n ts o f E U D ire c tiv e
96/481) a n d E U D ire c tiv e 2001/162), a s m o d ifie d b y E U D ire c tiv e 2004/503) o f 29 A p ril 2004.
F o r re la tio n s h ip w ith E U D ire c tiv e s , s e e in fo rm a tiv e A n n e x e s Z A a n d Z B , w h ic h a re a n in te g ra l p a rt o f th is d o c u m e n t.
A c c o rd in g to th e C E N /C E N E L E C In te rn a l R e g u la tio n s , th e n a tio n a l s ta n d a rd s o rg a n iz a tio n s o f th e fo llo w in g c o u n trie s a re b o u n d to im p le m e n t th is E u ro p e a n S ta n d a rd : A u s tria ,
B e lg iu m , B u lg a ria ,
C y p ru s , C z e c h R e p u b lic ,
D e n m a rk ,
E s to n ia ,
F in la n d , F ra n c e ,
G e rm a n y , G re e c e ,
H u n g a r y , Ic e la n d , Ire la n d , Ita ly , L a tv ia , L ith u a n ia , L u x e m b o u rg , M a lta , N e th e rla n d s , N o rw a y , P o la n d , P o rtu g a l, R o m a n ia , S lo v a k ia , S lo v e n ia , S p a in , S w e d e n , S w itz e rla n d a n d U n ite d Kin g d o m .
1)
Officia l J ourna l of the Europe a n C ommunitie s No. L 235 of 17.9.96. 2)
Officia l J ourna l of the Europe a n C ommunitie s No. L 110 of 20.4.01. 3) Officia l J ourna l of the Europe a n C ommunitie s No. L 220 of 21.6.04. C opyrig ht Britis h S ta nda rds Ins titution P rovide d by IHS unde r lice ns e with BS I - Uncontrolle d C opy
Not for R e s a le
No re production or ne tworking pe rmitte d without lice ns e from IHS --````````-`-`````---
EN 12082:2007 (E)
4
In tro d u c tio n T h is E u ro p e a n S ta n d a rd h a s b e e n d ra w n u p w ith th e p u rp o s e o f s ta n d a rd iz in g th e p e rfo rm a n c e te s tin g o f a x le b o x e s fo r a ll ty p e s o f ro llin g s to c k to e n s u re s u ita b ility fo r th e re q u ire d s e rv ic e , i.e . th a t th e a s s e m b ly o f b o x h o u s in g , b e a rin g , s e a lin g a n d g re a s e is w e ll s u ite d fo r th e s e rv ic e re q u ire m e n ts .
T h is te s tin g is m a d e u p o f tw o s ta g e s , a "rig p e rfo rm a n c e te s t", d e s c rib e d in d e ta il in th is E u ro p e a n S ta n d a rd , a n d a "fie ld te s t”. W h e n rig p e rfo rm a n c e te s tin g is s p e c ifie d , it n e e d s to b e c a rrie d o u t in a c c o rd a n c e w ith th is E u ro p e a n S ta n d a rd. T h e e x te n t o f te s tin g to b e a p p lie d d e p e n d s o n th e n o v e lty o f b e a rin g d e s ig n , s e a l d e s ig n , g re a s e fo rm u la tio n o r b o x h o u s in g , a s w e ll a s th e a p p lic a tio n (s e e E N 12080 a n d E N 12081).
T h e rig p e rfo rm a n c e te s t w ill c h e c k th e s a tis fa c to ry fu n c tio n o f th e a s s e m b ly d u rin g a s im u la te d jo u rn e y. It is to b e a p p lie d o n ly if th e a x le b o x is c o m p o s e d o f e le m e n ts d e liv e re d b y s u p p lie rs th a t o p e ra te a q u a lity
m a n a g e m e n t s y s te m 4).
T h e fie ld te s t c o m p ris e s m o n ito rin g o n v e h ic le s in s e rv ic e o f a s u ffic ie n tly la rg e s a m p le o f a x le b o x e s d u rin g a h ig h m ile a g e .
4) The s ys te ms us e d s hould offe r e quiva le nce with EN IS O 9001.
C opyrig ht Britis h S ta nda rds Ins titution
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No re production or ne tworking pe rmitte d without lice ns e from IHS
EN 12082:2007 (E)
5 1 S c o p e T h is E u ro p e a n S ta n d a rd s p e c ifie s th e p rin c ip le s a n d m e th o d s fo r a rig p e rfo rm a n c e te s t o f th e s y s te m o f b o x h o u s in g , ro llin g b e a rin g s , s e a lin g a n d g re a s e . T e s t p a ra m e te rs a n d m in im u m p e rfo rm a n c e re q u ire m e n ts fo r v e h ic le s in o p e ra tio n o n m a in lin e s a re s p e c ifie d in C la u s e
6 a n d A n n e x A (n o rm a tiv e ). D iffe re n t te s t p a ra m e te rs a n d p e rfo rm a n c e re q u ire m e n ts m a y b e s e le c te d fo r v e h ic le s in o p e ra tio n o n o th e r n e tw o rk s . B a s ic p rin c ip le s fo r a fie ld te s t a re a ls o d e te rm in e d.
2 No rm a tive re fe re n c e s
T h e fo llo w in g re fe re n c e d d o c u m e n ts a re in d is p e n s a b le fo r th e a p p lic a tio n o f th is E u ro p e a n S ta n d a rd. F o r d a te d re fe re n c e s , o n ly th e e d itio n c ite d a p p lie s . F o r u n d a te d re fe re n c e s , th e la te s t e d itio n o f th e re fe re n c e d d o c u m e n t (in c lu d in g a n y a m e n d m e n ts ) a p p lie s .
E N 12080, R a ilw a y a p p lic a tio n s — A x le b o x e s — R o llin g b e a rin g s
E N 12081, R a ilw a y a p p lic a tio n s — A x le b o x e s — L u b ric a tin g g re a s e s
IS O 2137, P e tro le u m p ro d u c ts — L u b ric a tin g g re a s e a n d p e tro la tu m — D e te rm in a tio n o f c o n e p e n e tra tio n IS O 2176, P e tro le u m p ro d u c ts — L u b ric a tin g g re a s e — D e te rm in a tio n o f d ro p p in g p o in t
IS O 3733, P e tro le u m p ro d u c ts a n d b itu m in o u s m a te ria ls — D e te rm in a tio n o f w a te r — D is tilla tio n m e th o d
N F F 19-5035), M a térie l ro u la n t fe rro v ia ire — M éth o d e d 'e s s a is d e s g ra is s e s p o u r b o ?te s d 'e s s ie u x à
ro u le m e n ts — E s s a i d y n a m iq u e d e la s ta b ilité a l'o x y d a tio n d e s g ra is s e s
3 Te rm s a n d d e fin itio n s
F o r th e p u rp o s e s o f th is E u ro p e a n S ta n d a rd , th e fo llo w in g te rm s a n d d e fin itio n s a p p ly.
3.1
c u s t o m e r
ra ilw a y u n d e rta k in g , m a n u fa c tu re r o r b u y e r o f ra ilw a y ro llin g s to c k o r s u b a s s e m b lie s , o r th e ir re p re s e n ta tiv e
3.2
r a i l w a y u n d e r t a k i n g
o rg a n is a tio n o r its re p re s e n ta tiv e , w h a te v e r s ta tu s it h a s , w h ic h is re s p o n s ib le fo r th e re g is tra tio n o f ro llin g s to c k
3.3
s u p p l i e r
s u p p lie r o f ro llin g b e a rin g s , s e a lin g , g re a s e o r b o x h o u s in g s fo r a x le b o x e s , m a n u fa c tu re d u n d e r h is re s p o n s ib ility
3.4
a x l e
b o x
a s s e m
b ly o f b o x h o u s in g , ro llin g b e a rin g s , s e a lin g a n d g re a s e
5) NF — As s ocia tion Fra n?a is e de Norma lis a tion (AFNOR ), 11 a ve nue Fra ncis de P re s s e ns é, 93571 La P la ine S a int-De nis Ce de x, Te l.: +33 (0) 1 41 62 80 00, Fa x: +33 (0) 1 49 17 90 00.
C opyrig ht Britis h S ta nda rds Ins titution
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EN 12082:2007 (E) 6 3.5
b o x h o u s i n g
s tru c tu ra l c o m p o n e n t w h ic h c o n ta in s ro llin g b e a rin g s , s e a lin g a n d g re a s e
3.6
r o l l i n g b e a r i n g
b e a rin g , o p e ra tin g w ith ro llin g m o tio n b e tw e e n th e p a rts , s u p p o rtin g lo a d a n d m o v in g in re la tio n to e a
c h o th e r
3.7
c a r t r i
d g
e b e a r i n g
ro llin g b e a rin g w ith tw o o r m o re ro w s o f ro llin g e le m e n ts w ith in a s in g le o u te r rin g , g re a s e d a n d e q u ip p e d w ith in te g ra l s e a ls
3.8
g r e a s e
s e m i-s o lid lu b ric a n t, w h ic h c o n s is ts o f a th ic k e n e r a n d a d d itiv e s d is p e rs e d in a lu b ric a tin g o il
3.9
s e a l i n g
c o m p o n e n t th a t p ro te c ts th e ro llin g b e a rin g s a g a in s t in g re s s o f w a te r a n
d d u s t a n d r
e ta in s g re a s e in th e ro llin g b e a rin g s
3.10
n o m i n a l t e s t s p e e d
v e h ic le s p e e d lim it in c re a s e d w ith 10 %
3.11
m a i n l i n e
ra ilw a y n e tw o rk o p e n to d iffe re n t ty p e s o f ro llin g s to c k
3.12
n e t w o r k
in fra s tru c tu re , o n w h ic h a n y ra ilw a y u n d e rta k in g c a n o p e ra te ro llin g s to c k
4 In fo rm a tio n a n d c o n d itio n s to b e a g re e d a n d d o c u m e n te d
T h e a p p ro v a l p ro c e d u re s fo r th e ro llin g b e a rin g s a re d e fin e d in E N 12080 a n d fo r th e lu b ric a tin g g re a s e s in E N 12081. T h e rig p e rfo rm a n c e te s t is s tip u la te d in b o th o f th e s e E u ro p e a n S ta n d a rd s . F o r th e rig p e rfo rm a n c e te s t, th e fo llo w in g is to b e a g re e d b e tw e e n th e c u s to m e r a n d th e s u p p lie r a n d s h a ll b e fu lly d o c u m e n te d b y th e s u p p lie r:
d e s ig n a tio n a n d c h a ra c te ris tic s o f th e ro llin g b e a rin g a c c o rd in g to E N 12080;
d e s ig n a tio n a n d c h a ra c te ris tic s o f th e lu b ric a tin g g re a s e a c c o rd in g to E N 12081;
d e s ig n a tio n a n d c h a ra c te ris tic s o f th e s e a lin g ;
d e s ig n a tio n a n d c h a ra c te ris tic s o f th e b o x h o u s in g ;
in p u t d a ta re q u ire d fo r d e te rm in in g te s t p a ra m e te rs a re fu rth e r d e s c rib e d in 6.2.2;
e x te n t o
f te s tin
g fo r ro llin g b e a rin g s fo r v e
h ic le s n o t in o p e ra tio n o n m a in lin e s ;
e x te n t o
f te s tin
g fo r ro llin g b e a rin g , g re a s e , s e a lin g o r b o x
h o u s in g s im ila r to s e rv ic e p ro v e n d e s ig n s (s e e
A.5);
c o n
d itio n s in t
e n d e d fo r th e fie ld te s t (s e e C la u s e 7).
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7 5 Wa te rtig h tn e s s te s t
T h e c u s to m e r s h a ll s p e c ify w h e th e r a w a te rtig h tn e s s te s t s h a ll b e m a d e .
A s u ita b le m e th o d (in s ta tic m o d e ) is p re s e n te d in A.9.
A m e th o d fo r o p tio n a l fu rth e r d y n a m ic te s tin g is d e s c rib e d in U IC 515-5.
6 R ig p e rfo rm a n c e te s t
6.1 Ge n e ra l T h e te s t c o n s is ts o f p u ttin g tw o a x le b o x e s o n a te s t rig a n d s u b je c tin g th e m to re p e a te d lo a d in g c y c le s d e te rm in e d fro m th e o p e ra tin g c o n d itio n s o f th e v e h ic le s to b e e q u ip p e d w ith th e s e a x le b o x e s .
T w o id e n tic a l a x le b o x e s in c lu d in g ; ro llin g b e a rin g s , s e a lin g , g re a s e a n d b o x h o u s in g , a s s e m b le d a s fo r o p e ra tin g c o n d itio n s s h a ll b e m o u n te d o n th e te s t rig a x le jo u rn a ls . A fte r m o u n tin g , th e c le a ra n c e s h a ll b e a s c lo s e a s p o s s ib le to th e m a x im u m o f th e to le ra n c e fo r o n e a x le b o x a n d m in im u m fo r th e o th e r.
D u rin g rig o p e ra tio n , th e a x le b o x e s a re s u b je c te d to c o n s ta n t v e rtic a l lo a d s a n d v a ry in g tra n s v e rs a l lo a d s w h ic h w ill p ro d u c e ra d ia l a n d a x ia l fo rc e s o n th e ro llin g b e a rin g s .
C a lc u la tin g th e c o n s ta n t n o m in a l ra d ia l fo rc e n r F a n d th e n o m in a l a x ia l lo a d a n F is c a rrie d o u t b y m e a n s o f th e m e th o d s d e s c rib e d in A.4. T h e c o n s ta n t ra d ia l lo a d is d e s ig n a te d r F , a n d th e v a ry in g a c tu a l a x ia l lo a d is d e s ig n a te d a F . A ll th e s e fo rc e s a re a p p lie d o n o n e jo u rn a l w ith a x le b o x.
O th e r te s t p a ra m e te rs in c lu d in g d iffe re n t ra d ia l a n d a x ia l lo a d c y c le s , s p e e d s , b e n d in g fo rc e s o n a x le jo u rn a l tra n s m itte d v ia th e a x le b o x , a n a ly s is o f te m p e ra tu re e tc. c a n b e a p p lie d a s s u p p le m e n ta ry te s ts in a g re e m e n t b e tw e e n c u s to m e r a n d s u p p lie r.
B e fo re th e re a l p e rfo rm a n c e te s t, a p re -te s t s h a ll b e c a rrie d o u t. T h is d o e s n o t c o n s titu te p a rt o f th e o ffic ia l a p p ro v a l te s t fo r th e b e a rin g s o r g re a s e b e in g te s te d , b u t is in te n d e d to o b s e rv e th e th e rm a l b e h a v io u r o f th e b e a rin g s w h ile th e g re a s e is re d is trib u te d.
T h e p e rfo rm a n c e te s t c o n s is ts o f re p e a tin g id e n tic a l c y c le s u p to a n a g re e d c u m u la tiv e d is ta n c e . T h e n u m b e r o f c y c le s a n d th e te s t d is ta n c e re fle c t th e s e rv ic e c o n d itio n s o f th e in te n d e d a p p lic a tio n. T h ro u g h o u t th e te s t, th e p e rfo rm a n c e o f th e b e a rin g s w ill b e m o n ito re d b y m e a s u re m e n t o f te m p e ra tu re s , th e v a lu e s o f w h ic h , b o th a b s o lu te a n d re la tiv e , s h a ll re m a in w ith in lim its . F in a lly , o n c o m p le tio n o f th e te s t, th e b e a rin g s a n d th e g re a s e w ill b e in s p e c te d a n d s h a ll n o t s h o w a n y c h a n g e s b e y o n d lim its im p o s e d.
6.2 Ex e c u tio n
6.2.1 T e s t r i g
T h e te s t rig s h a ll a p p ly te s tin g c o n d itio n s w h ic h a re d e riv e d fro m th e s e rv ic e o p e ra tin g c o n d itio n s a n d e n s u re a c c u ra te m o n ito rin g o f th e a x le b o x e s u n d e r te s t a n d a t th e s a m e tim e m in im iz e in flu e n c e fro m th e rig . E s p e c ia lly , it s h a ll b e a v o id e d th a t d is tu rb a n c e s o n o n e a x le b o x a re tra n s fe rre d to th e o th e r a x le b o x. A n e x a m p le o f a te s t rig is s c h e m a tic a lly s h o w n in A.1 a n d in c lu d e s p rin c ip a lly :
a )
a x le o r tw o s y n c h ro n iz e d a x le s , o n w h ic h th e a x le
b o x e s a re m o u n te d o n th e jo u rn a ls ; b )
ro ta tio n m e c h a n is m ; c ) d e v ic e fo r m e a s u rin g th e ro ta tio n a l s p e e d o f th e a x le ;
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EN 12082:2007 (E) 8 d ) d e v ic e a rra n g e d to s u b je c t e a c h a x le b o x to a c o n s ta n t ra d ia l fo rc e
r F = n r F ; e ) m e a s u rin g d e v ic e to m o n ito r th is ra d ia l fo rc e r F ;
f) d e v ic e a rra n g e d to s u b je c t e a c h a x le b o x to a n a lte rn a tin g a x ia l fo rc e
a F ; g )
m e a s u rin g d e v ic e to m o n ito r th is a lte rn a tin g a x ia l fo rc e a F ; h )
v e n tila tio n e q u ip m e n t to s im u la te th e c o o lin g in o p e ra tio n ; i) s e n s o rs p e rm ittin g te m p e ra tu re m e a s u re m e n t:
1) i n g e n e ra l, tw o s e n s o rs in th e lo a d e d z o n e o f b o th a x le b o x e s , a lig n e d c e n tra lly a b o v e th e b e a rin g
ro w s w ith ty p ic a l p o s itio n s s h o w n in F ig u re A.2 fo r a n a x le b o x w ith tw o b e a rin g s a n d in F ig u re A.3 fo r a n a x le b o x w ith o n e b e a rin g ;
2) i n th e s c a n n in g z o n e o f th e h o t b o x d e te c to rs (H B D ), b y a s e n s o r in d ire c t c o n ta c t w ith th e s u rfa c e o f th e b o d y a s in d ic a te d in F ig u re A.4 (a n o n -c o n ta c tin g te m p e ra tu re s e n s o r – m e a s u rin g in th e s a m e z o n e – s h a ll b e u s e d o n ly in c a s e th e re a re n o s u ita b le s u rfa c e s to a tta c h a s e n s o r);
3) o f th e a m b ie n t a ir s tre a m w h ic h is d ire c te d a t th e a x le b o x e s , m e a s u re d a t th e o u tle t o f th e c o o lin g fa n s . It s h a ll b e m e a s u re d fo r b o th a x le b o x e s (s e e F ig u re A.1).
6.2.2 T e s t p a r a m e t e r s
6.2.2.1
G e n e r a l T h e te s t p a ra m e te rs w ill b e d e fin e d o n th e b a s is o f th e o p e ra tin g c o n d itio n s o f th e v e h ic le s to b e e q u ip p e d w ith th e s e a x le b o x e s a n d d o c u m e n te d in a c c o rd a n c e w ith C la u s e 4. T h e fo llo w in g te s t p a ra m e te rs a re re q u ire d , a g re e d a n d d o c u m e n te d b e fo re th e te s t a n d p re s e n te d in th e te s t re p o rt:
a )
re fe re n c e v e rtic a l lo a d 0F (th e a x le lo a d ), in n e w to n s ; b )
w h e e l d ia m e te r a t th e lim it o f w e a r m in d , in m e tre s ; c )
v e h ic le s p e e d lim it m a x
ν, in k ilo m e tre s p e r h o u r; d )
p re -te s t p ro c e d u re ; e )
te s t c y c le a n d c u m u la tiv e te s t d is ta n c e , in k ilo m e tre s ; f) o rig in a l g re a s e q u a n tity a n d , if re q u ire d , re -lu b ric a tio n in te rv a l a n d g re a s e q u a n tity. If d e v ia tio n s fro m th e te s t p a ra m e te rs in A.4 a n d A.6 a re a g re e d in o rd e r to s im u la te s p e c ia l o p e ra tin g c o n d itio n s , th is s h a ll b e in d ic a te d in th e te s t re p o rt.
6.2.2.2 R o t a t i o n a l s p e e d
T h e m a x im u m ro ta tio n a l s p e e d , m a in ta in e d m o s t o f th e tim e d u rin g th e te s t, is th a t o f a w h e e ls e t o n w h ic h th e w h e e ls a re a t th e ir lim it o f w e a r a n d w h e re th e ro ta tio n a l s p e e d is d e riv e d fro m th e v e h ic le s p e e d lim it, in c re a s e d w ith a s a fe ty m a rg in o f 10 %. T h e re s u ltin g ro ta tio n a l s p e e d is th e n o m in a l te s t s p e e d , n , in re v o lu tio n s p e r m in u te . T h e n o m in a l s p e e d in k ilo m e tre s p e r h o u r is d e s ig n a te d n ν
. m in
m a x
6110d πv n = (1)
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