by dirktheeng » Tue May 10, 2011 2:41 am
All,
I was wondering if you could check the bearing ID size with a calipers and post them. Some reviewers on the VXB site said that they recieved undersized bearings. Bart also mentioned this, but I am not sure that this isn't a fluke. I was wondering if this was a fluke of bad bearings or if VXB is not a reputable source. The R4ZZ bearing is supposed to be 0.2500" to 0.252" in size on the ID. That is a measured standard for the R4ZZ bearing. I am going to check mine too when I get my calipers back from work. This is somewhat important if we ever want to switch from threaded rod to a more precise shaft. If we have bearings that are undersized, then we have to replace them too to upgrade. Mcmaster also sells the same class of bearing for $4.60 a piece (really pricy but known to be right on and reputable). At most this means an additional $45. I have found other dealers who sell the same class of bearing as cheap as $1.90 a piece, but now I am afraid to order if they are undersized too. I have some emails out to ask about this and see if we can get measured confirmation of the id from another inexpensive source.
-Dirk