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Hi?gang,

I have a fellow Losmandy user in Australia, interested in having me send some R4ZZ ABEC-7 bearings to him with some Belleville washers, and clutch disks.? So I am putting together a kit for him.

I looked for my favorite vendor of the R4ZZ ABEC-7 bearings, namely .? I specified those when I wrote the PDF on installing these, a few years ago.? Since then, other people mentioned the good price on these quality bearings from McMaster-Carr online.?? I remember seeing the same item, some time ago, on McMaster-Carr website for about $5.50.

At BocaBearings, they show these bearings at a cost (singles) of ~$10.77 each.? At quantity 10, they go down slightly to $9.39.? The specific bearing is listed here:

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I then chatted with the seller BocaBearings.com. I told him the McMaster-carr version were only about $5.50.? He replied that his bearings are more costly than McMaster because they are stainless steel, and that the McMaster-Carr bearings are not stainless.? (I guess he's in the bearing business and should know!)

So...? this might explain the 2X price difference between these 2 vendors.? And of course, we have our equipment outdoors, where heat and moisture can corrode things, so the stainless?steel bearings would be preferred for long term use.

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I just put in my order for 10 of these from Bocabearings.? ?I'll have a few spare, so let me know if you also want some, and I'll order more of them... but of course you can get them directly for hardly any more money!? They are harder to get abroad, so if you are out of the US, let me know if you want me to ship you some for upgrading your mount also.

All the best,

Michael