Guhring 3189 Carbide Square Nose End Mill, TiAlN/TiN Multilayer Finish, Roughing Cut, 20 Deg Helix, 4 Flutes, 2.5" Overall Length, 0.25" Cutting Diameter, 0.25" Shank Diameter

GS 100 roughing cutters offer extensive general purpose application possibilities. These roughers have a unique round knuckle-type tooth profile which requires less HP than traditional flat knuckle-type end mills. The unique geometry also has a staggered pitch angle (see illustration), spreading the feed engagement across the full length of the cutting edge and allowing for a high rate of metal removal. The 5-flute GS 100 U with its 30 degree RH spiral and fine knuckle-type teeth is suitable for the machining of all general steels up to 48 HRC, high-alloyed steels as well as titanium or chrome nickel alloys. Suitable for less powerful and less stable machines. Suitable for less favorable workpiece and tool clamping conditions. High metal removal rate due to the utilization of the complete cutting edge length. Standard length. Super-A finish. Type NRf: Fine knuckle type teeth short chipping with excellent chip evacuation. Higher feed rates in comparison to type NR. Suitable for roughing of materials with high hardness up to approximate 48 HRC.

• Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
• Aluminum titanium nitride is similar to TiAlN but with a higher aluminum content for improved hardness and smoothness
• Round shanks allow use with a wide variety of toolholding systems
• Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction
• 4 Flutes