Machine Capabilities. UNISIG produces precision solutions to meet the production and specification demands across applications. Capacidades de la Máquina.These chart is based on machining experiences using steels with a hardness of 200-250HB and cutting speed of 100m/min. DRILL DIA (mm). POWER. DRILL DIA (mm). B - 285 | TREPANNING DRILLS These chart is based on machining experiences using steels with a hardness of 200-250HB and cutting speed of 100m/min. B - 271 | TREPANNING DRILL. B - 272 | SOLID CARBIDE DRILL. B - DRILLING resistance sub-micro substrate for general purpose machining. All too often, shops invest hundreds of thousands of dollars in a new machining center to increase production, when they could accomplish. Engraving, Blanking, Drilling and Trepanning-Advantages and limitations – (2Hrs) Applications. Electro Chemical Machining: Electro- ISCAR introduces a new modular and adjustable trepanning system for face grooving and trepanning operations. This system is intended for machining centers and These chart is based on machining experiences using steels with a hardness of 200-250HB and cutting speed of 100m/min. • For cast iron the effective power