Not surprising that you may not have heard the term. Just like the automakers, CNC mfgrs don't refer to them as "price classes" in public as often as they do "size classes". And just like the big auto guys they (the CNC mfgrs) are acutely aware of their competitors pricing and work very hard to be pretty close to them with equal features and similarly priced options. And they do not hesitate in their marketing to use the term "Best in Class"TReischl wrote: ↑Fri Mar 13, 2020 1:20 am
Gary, where do these "price classes" exist? I have been around a long time and have never heard the term as you stated it. Sure, I have heard something like " Such and such is a $100K machine" but that is not a class, just a statement of the cost of the machine. I dunno, I think more in terms of "price ranges" rather than "classes".
In each of these size classes ( intentionally patronizing) most brands use a similar bearing type and as you go up the price ladder linear rails are used and their size increases with price. Similarly sized steppers, routers, spindles, etc, etc. You can be sure that as the price, quality and rigidity of these components increases, so does the overall model price and its ability to hold a tolerance at a given feedrate.
Its not my rule, maybe even not a written rule, but rest assured the R & D departments of the OEMs consider the overall machine price with every decision they make. I know because I worked in R&D at 2 US CNC OEMs.