Posted by spiffy1 on January 05, 2009 at 23:44:48 from (70.41.137.72):
I think this was discussed a while back around here, and I'm not positive my cross reference data is correct, but I believe the New Departure bearings used for mains in a 22-36 [and I think 15-30, 10-20 ect.] cross to the max capacity series.
It also seems a couple parts houses have noted that many people are using a slightly lighter bearing [I presumed this meant Standard Capacity as I don't know if 'light' is even made in bearings of this size] with good results.
Now for my quandry, I happened across a pair of bearings at a nice price, front: max capacity, rear: standard [however, a "high performance" version within the "standard" classification]. Comparing the rear to it's max capacity version, the dynamic load is nearly identical: good; static load is maybe 2/3 but so great it doesn't matter: OK. The fatigue load, however, is also about 2/3 of a max capacity bearing; yet neither is under my expectations for even idle conditions, so I'm thinking this should be a non-issue as well (i.e. neither will run "infinitely" so dynamic load rating again becomes the life predicting factor for the application and the life is near identical or at least "absolutely fine")?
I know, I know, this tractor will probably never see a single 12hour day, let alone pulling 3 16s through hard soil the whole time, so I'm over-analyzing, but I hate to underdo things anyway. Any opinions confirming or negating my estimate [the high performance 'standard' bearing should be as good as the 'max capacity' in this case]?
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