The MDSS "Long Multi Drill" is special designed for deep hole drilling e.g. for crankshaft machining. Cutting temperature, chip removement, strength and geometry of the drill and so called minimum quantity lubrication (MQL) have big influence to cutting process. Especially this MQL enables this carbide twisted drill to make deep hole drilling, whose L/D is more than 15, as short chips are generated by MQL. Our Long Multi Drill has a ZX coated chip generating area and a new designed chip removal area.
