Hello
I've just bought some SYK bk12 ball screw supports and some bf12 to go with them . The boxes on the bf 12 state c3 grade which is what I ordered but the bk12 supports only state BK12 is there any way of finding out if the the bk12 supports are c3 grade. will there be a problem if I open the bk supports to have a look at the bearings ? Thanks in advance.

Andrew