® Mill-Thread Technical Section MTQ type Thread mills with relieved neck and internal coolant for milling medium and large threads on relatively deep work pieces. Advantages To produce medium and large threads on relatively Provides high rigidity and stability (anti-vibration). deep work pieces. Accomplishes deep threads in one pass. To use overhang according to the application. Relatively low cutting forces due to short cutting To perform deep threads at the bottom of the length. application. Threads length up to 3D. Cutting Data MT7 Sub-Micron Grade with Titanium Aluminum Nitride multi-layer coating (ISO K10 - K20). This is a general purpose grade, which can be used with all materials; it should be run at medium to high cutting speeds. Cutting Feed mm/tooth ISO Materials Speed Cutting Diameter=D m/min ø10 ø12 ø14 ø16 ø20 ø25 Low and Medium Carbon Steels < 0.55%C 100 - 250 0.06 0.07 0.07 0.08 0.10 0.12 P High Carbon Steels ≥ 0.55%C 110 - 180 0.05 0.05 0.06 0.07 0.09 0.10 Alloy Steels, Treated Steels 90 - 160 0.03 0.04 0.04 0.05 0.06 0.07 M Stainless Steels - Free CuttingStainless Steels - Austenitic60 - 1600.040.04 0.05 0.06 0.06 0.0860 - 1200.040.040.040.050.060.07 Cast Steels 130 - 170 0.03 0.04 0.04 0.05 0.06 0.07 K Cast Iron 70 - 150 0.06 0.07 0.07 0.08 0.10 0.12 Aluminum ≤ 12%Si, Copper 150 - 350 0.06 0.07 0.07 0.08 0.10 0.12 N Aluminum > 12% Si 100 - 250 0.03 0.04 0.04 0.05 0.06 0.07 Synthetics, Duroplastics, Thermoplastics 100 - 400 0.08 0.09 0.10 0.11 0.13 0.15 S Nickel Alloys, Titanium Alloys 20 - 80 0.02 0.02 0.02 0.03 0.03 0.03 startpoint ThreadMilling endpoint Thread start ThreadpositionMilling Millingstart Thread (2. entry) (2. entry) position Milling (1. entry) (1. entry) B12-13