I can see that, but it doesn't explain why the new bearings MEASURE smaller than the old bearings. I pressed (yes I had to use a press) a couple old bearings back into these nose drives, and everything'* tight. The new bearings fall right in.

Like I said, give me some time to find out more info on my end, and talk to Chris. I'd like to sort this out, not just for myself, but for everybody here. Like I said before, I've used Chris' stuff before too and not had problems. I think he'* a great guy. When I initially read this topic a few weeks ago, I too brushed it off as just a bad nosedrive. Then when I started having the same problem, with 3 different new NTN bearings, I remembered this topic and started to thing that maybe there'* a problem here.

Not sure what happened to you, but I've always had to press them in with considerable force. Both Gen'* of 62'* and M90'* alike. I'll drop Chris a link to this topic.

Will, thanks for bringing this to my attention. This is the first I've heard of any problems like this. To address the part number issue, these are the correct bearings. Ball bearings are designated in increments of millimeters, not fractions so I assure you these are the correct part number/dimension bearings. It is a possibility that the tolerance in the batch that you got could be off, but to .010 is a lot. I'm going to check out a bunch of the NTN'sI have here as well as some SKF'* I have. I have been using the NTN brand for at least a year now with no issues. When I first started getting them, both sizes were made in the USA, then they started sending me the larger one made in Taiwan, but the smaller one you are having an issue with is actually made in USA. Again, I'm going to check some out and post my findings later.

I just measured a bunch and they all seem consistent. I'd like to get those one'* in question back as well as a used one if possible. I've got 3 here that all seem the same, 1 NTN, 1 SKF, 1 Fafnir brand. I'll send these to you right away if you want.
Let me know, I'd like to get to the bottom of this being you're saying that the bearings hadn't spun in the housing and the housing is not damaged in any way.

Cool, Chris. I was going to email you when my parts guys found a few things out. I've got a couple used bearings I can send you, as well as the NTNs. I'm off tomorrow, but I can get them at work on Wednesday and we can figure things out.

OK, let me know.