Originally Posted by
Burton
Your computer must be much better than mine - or maybe you have some inside info that I don`t.
I checked out that site and couldn`t find any grade 25 bearings in any size. ain fact the only description I could find listed against even the bicycle specific kit was `NEW`.
I did find lots of 100 5/32 ball bearings for $6, and also lots of 5 (FIVE) 5/32 ball bearings for $12 and neither had a grade posted against them so I have no idea how anyone is expected to know what they`re buying.
And based on my experiences with some Chinese suppliers who offerred to write whatever grade we wanted on some bearings - think I`ll stick to reputable sources.
Click on these links and you'll easily find exactly what I described. Scroll down a bit and you'll get the info you were missing, including a very complete description of what grade 25 is,
Grade 25 Chrome steel bearing balls are widely used in precision ball bearings as well as most aerospace, transportation and industrial applications.Chromium (Cr) has a tendency to increase hardness, toughness and wear resistance of steel. Chrome steel is a chrome alloy carbon steel, not a chrome plated steel.
Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity as a result of through hardening (Rockwell C 60-67). Chrome steel is approximetly 96% iron and fully magnetic.
http://cgi.ebay.com/100-5-32-Chrome-...item588d7f4b21
http://cgi.ebay.com/100-1-4-Chrome-s...item483ff1f383
Absolutely no reason to think this source is any less reputable than any other.