TAC-25M machining centre is manufactured by HOMMA MACHINERY CO.,LTD, Japan. Its processing objects are cylinder heads for MAN-B&W、WARTSILA series diesel engines, mainly used for turning of internal and external of cylinder head, hole drilling, boring, screw tapping, surfacing milling and etc.. Maximun allowed size of screw tapping of the machine is M85x6(screw milling if above M85), one time drilling maximum size is ф126mm(through-hole).