BT50 facemill holder, also called facemill arbour and facemill adaptor
BT50 FMA40 is mainly used to hold a Modular Indexable Cutter with an internal hole of 16 mm. Any cutter can come with a 40 mm Internal thread, but 160 mm and 200 mm Cutters are common in this range.
Made from alloy steel hardened to 54 56rcBalanced to G6.3 at 12,000 rpmsConcentricity is less than .005 micron up to 100 Length and 0.012 up to 200 LengthAll critical tool holder surfaces precision groundGage length is 70MM,100MM,150MM,Rear thread for pull stud is M16 X 2.0
