Do you guys think that there is a big difference between KOYO and National Bearings - or any American bearing for that matter. Specifically wheel and knuckle bearings.
Matthew
Matthew
KOYO vs NATIONAL Bearing
- Thread starter ArmyFJ
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Where are the National bearings made? If this is the company you are talking about I would run their product. http://www.nationalprecision.com/ I have had good luck with Fafnir, Koyo, SKF, and Timken.
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The knuckle bearings are tricky because there is a bearing with almost the same part number as the Koyo part that some places cross reference to a bearing that is not the correct dimensions.
If the bearing is high quality and the correct dimensions you will be fine running them. You are going to need a caliper to tell if the bearings are the correct dimension or look up the maker and number online to get dimensions. I have read many people get the wrong size knuckle bearings from auto parts houses.
30303 and 30303D are not the same. One is taller than the other and I ran into fitment problems on my cruiser front with toy knuckles. The "d" is shorter.
FineWynsFJ40
Too much to do...
You cannot go wrong with KOYO bearings, they are the original ones, after all.
i have no issues with national....sell them all the time at work, and they appear beefy and never had to warranty one.
if you do get nationals, make sure to get the races also. often times, even if a bearing has the same number, the taper will be different, so it's imperative to get a race that matches the bearing from the manufacturer.
if you do get nationals, make sure to get the races also. often times, even if a bearing has the same number, the taper will be different, so it's imperative to get a race that matches the bearing from the manufacturer.
timkens are the shizz in my book.
my bro-in-law is an engineer at one of their plants, so i guess i might be a little biased, ha ha.
my bro-in-law is an engineer at one of their plants, so i guess i might be a little biased, ha ha.
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Thanks for the info guys the knuckle bearing is PN 30304 at the parts store but a thread in here mentioned PN 30304a ... so I am going to measure them and I will let you all know. I doubt they will work.
Matthew
Matthew
I've been running National bearings on Japanese cars for over a decade. Never a failure. Some of the cars are used in AutoX. One is a V8 powered heavy performance sedan. One car is driven between 100-120 MPH. All uses are for high stress situations.
It is known in 1st gen 4x4 Tacoma circles that Koyo bearings come in a National box when purchased from O'Reilly.
It is known in 1st gen 4x4 Tacoma circles that Koyo bearings come in a National box when purchased from O'Reilly.
