Cutting speed: Vc (m/min) GradeInsertExt. ToolholderInt. ToolholderThreadingGroovingMiniature toolMilling cutterEndmillDrilling toolTooling SystemUser's GuideIndex A B Indexable gundrillfor extreme productivity C and stability D Ultimate efficiency Unique chipbreakers on the cutting edge enable impressive chip control and high feed rates. E Excellent chip control - Chip splitters breaks chips into smaller segments to facilitate smooth Chip evacuation process - Its smooth chip evacuation ability allows the use in standard lathes and machining centers2Chip splitter F Insert NDJ chipbreaker G 1 3 - Low cutting force- For general purpose Guide pad H Performance comparison Chip control with other types of drills S55C140 S55C Drill diameter : DC = 21 mm Brazed Gundrill I 100 Brazed Gundrill J 50 0.1 0.2 0.3 feed: f (mm/rev) Cutting speed : Vc = 100 m/min Vc = 60 m/minfeed: f = 0.15 mm/revf = 0.05 mm/rev K Two bodies available for machining centers, lathes, and gundrill machines MCTR : for machining centers and lathes TRLG : for gundrill machines L Tool dia. : DC = 12 - 39.1 mm*Max. DC = 40: Available tailor-made toolsL/D: 8, 10, 15, 20, 25Tool dia.: DC = 12 - 30 mm*Max. DC = 40: Available tailor-made toolsOverall length: 800, 1000, 1500, 1650 mmM * Can be tailored up to 2400 mm overall length Reference pages: J090 - J111, Technical references → L086 Tungaloy J089