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cao!
imam jednu dilemu i potrebni su mi vasi saveti, naime trebam uraditi redovan servis kaiseva, spanera, filtera itd...
e sad, problem nastaje kod uljnog spanera, tacnije lagera istog!
model je SKF 633254 koji je prestao da se proizvodi i nema ga nigde.
dimenzije:
58.5 spoljasnji precnik
35 unutrasnji precnik
30 sirina
na drugim alfinim forumima sam video da su radili prepravke tako sto vezu dva manja (6907) 55 x 35 x 10 u paralelu i kod strugara naprave cauru u koju upresuju oba lagera da bi dobili zeljeni spoljni precnik 58.5mm... koliko je srecno ovo resenje? s obzirom da je zupcasti u pitanju? neki kazu da ce jedan brzo da strada jer ga vodi ovaj drugi, zapravo da nisu predvidjeni da rade u paru u istom kucistu? jel ima smisla ovo?
evo i teksta:
drugo resenje je meni palo na pamet, da se isto upare dva lagera ali 6007 dimenzije 62 x 35 x 14 tako dobijam 28mm sto ustvari znaci 30mm kada se izmedju njih stavi odstojnik, znaci original ali mi je precnik 3.5mm veci?
u ovoj varijanti ne bi isla nikakva caura jer sam vec izasao iz dimenzije za tih 3.5mm, da li to moze biti problem? ili problem sto ce biti malo zazora izmedju njih zbog kaisa koji naleze? moze li da dodje do ostecenja kaisa?
ovako bi to izgledalo:
sta uraditi?
hvala!
p.s. zaboravio sam da kazem da je u pitanju alfa 155 2.5
imam jednu dilemu i potrebni su mi vasi saveti, naime trebam uraditi redovan servis kaiseva, spanera, filtera itd...
e sad, problem nastaje kod uljnog spanera, tacnije lagera istog!
model je SKF 633254 koji je prestao da se proizvodi i nema ga nigde.
dimenzije:
58.5 spoljasnji precnik
35 unutrasnji precnik
30 sirina
na drugim alfinim forumima sam video da su radili prepravke tako sto vezu dva manja (6907) 55 x 35 x 10 u paralelu i kod strugara naprave cauru u koju upresuju oba lagera da bi dobili zeljeni spoljni precnik 58.5mm... koliko je srecno ovo resenje? s obzirom da je zupcasti u pitanju? neki kazu da ce jedan brzo da strada jer ga vodi ovaj drugi, zapravo da nisu predvidjeni da rade u paru u istom kucistu? jel ima smisla ovo?
evo i teksta:
ok i see that the original bearing is a problem for you guys, here some info:
original bearing ( hydraulic tensioner ) is a very strong double row ball bearing compared to the small single row ball bearing in the mechanical tensioner- this is actually a step back ( alfa wants to sell spare parts !!!)
i had never a (hydraulic)bearing failure, but some of the older ones are running rough and replacement is a good idea
they measure: D 58.5mm x d 35 mm 30mm wide outer side, 25 mm wide inner side
this is from the outside measurements a very special bearing made for alfa only
as im not rich and not crazy either to spend 90 $ for a simple bearing and most of you guys too, do following:
buy 2 single row bearings 6.907 2 RS, they measure 55 x 35 x 10, they cost 4 ( !!!!!!) $ each
let your machinist do a steel sleeve with 59mm outer dia and a inner dia for press fit to the bearings and 2 spacers for the shaft ( cost maximal 20 $ ) that makes total less then 30 $ and the best thing is that next time you replace the bearings you reuse the sleeve and spacers, so you get away for 8 $ !!!
this homemade bearing is as strong as the original one and who doesnt believe has to dismantle the original one and the 6907, if somebody wants a better than new than use NSK 6907 VV bearing they are more expensive ( around 15 $ each ) but top of the range free spinning bearings
for the tensioner himself the cheapest solution is to make a mechanical ( disconnect the oil) out of a hydraulic one or buy the zat-tensioner
original bearing ( hydraulic tensioner ) is a very strong double row ball bearing compared to the small single row ball bearing in the mechanical tensioner- this is actually a step back ( alfa wants to sell spare parts !!!)
i had never a (hydraulic)bearing failure, but some of the older ones are running rough and replacement is a good idea
they measure: D 58.5mm x d 35 mm 30mm wide outer side, 25 mm wide inner side
this is from the outside measurements a very special bearing made for alfa only
as im not rich and not crazy either to spend 90 $ for a simple bearing and most of you guys too, do following:
buy 2 single row bearings 6.907 2 RS, they measure 55 x 35 x 10, they cost 4 ( !!!!!!) $ each
let your machinist do a steel sleeve with 59mm outer dia and a inner dia for press fit to the bearings and 2 spacers for the shaft ( cost maximal 20 $ ) that makes total less then 30 $ and the best thing is that next time you replace the bearings you reuse the sleeve and spacers, so you get away for 8 $ !!!
this homemade bearing is as strong as the original one and who doesnt believe has to dismantle the original one and the 6907, if somebody wants a better than new than use NSK 6907 VV bearing they are more expensive ( around 15 $ each ) but top of the range free spinning bearings
for the tensioner himself the cheapest solution is to make a mechanical ( disconnect the oil) out of a hydraulic one or buy the zat-tensioner
u ovoj varijanti ne bi isla nikakva caura jer sam vec izasao iz dimenzije za tih 3.5mm, da li to moze biti problem? ili problem sto ce biti malo zazora izmedju njih zbog kaisa koji naleze? moze li da dodje do ostecenja kaisa?
ovako bi to izgledalo:
sta uraditi?
hvala!
p.s. zaboravio sam da kazem da je u pitanju alfa 155 2.5
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