Where to get belt rollers?

[memper]

Its getting warm enough in nyc so its time to dust off, change fluids and do maintenance checks. Upon inspecting my belt roller(fixed) and tensioner bearings they seem to spin ok with my thumb but they have patches of rust on them.
Should I just run them if they spin ok and the rust will be worn off by belt movement or should I replace?
If replacing, where can I purchase them?

*edit: it seems I can get the tensioner bearings here: https://www.motionindustries.com/productDetail.jsp?sku=02137990

But where for the fixed roller bearing? Part number?

[ducpainter]

If they spin smoothly just run them. The rust will polish off.

[memper]

Ok thanks.
moving on...

[Rudemouthsky]

First off that is way too much $$$ to pay for sealed bearings...

Top of the line Nachi:

http://www.ebay.com/itm/6201-2NSE-RS-2RS-Nachi-6201RS-12mm-Bore-ID-Sealed-Ball-Bearing-Made-in-Japan-/130377107572?pt=LH_DefaultDomain_0&hash=item1e5b14c874

Good 'enuff:

http://www.ebay.com/itm/1-6201-2RS-HCH-Premium-seal-6201-2rs-bearing-6201-ball-bearings-6201-RS-ABEC3-/140897574914?pt=LH_DefaultDomain_0&hash=item20ce266002

Or if you must have the SKF:

http://www.ebay.com/itm/Qt-1-SKF-6201-2RS-SKF-Brand-rubber-seals-bearing-6201-rs-ball-bearings-6201-rs-/131327223580?pt=LH_DefaultDomain_0&hash=item1e93b6671c

Fixed bearings are # 037029350...pricey at $56.74 EACH...and I'm convinced an alternative is here somewhere:

http://www.mcmaster.com/#cam-followers/=wdudqw

Grab your micrometer, take some measurements, and be a pioneer for the rest of us...I was going to do it but my builder needed em stat and I didn't wanna dick him around.

[memper]

I checked McMaster. The longest roller they have in metric Permasealed is 14mm. But mine spin ok so the belt movement will likely clean them up.

[Rudemouthsky]

Cool. I do think it may be beneficial to change the other (cheap) bearings, especially if they are getting up there. If one seizes up it'll wear your belts prematurely. And new rollers look aesthetically pleasing...my Nachis are a trick red color.