Sgs 77203 Corner Radius End Mill 1/2 Inch 7 Flute Carbide

Product Description

The SGS 77203 is a solid carbide corner radius end mill designed for high-performance finishing operations in demanding metalworking applications. Built to Series 77C specifications, it features a 1/2 inch mill diameter, a 0.03 inch corner radius, and 7 helical flutes with a close pitch and variable index geometry. The 4 inch overall length accommodates extended reach setups, while the 2 inch length of cut handles deep finishing passes. A TiN coating reduces friction and extends tool life in abrasive materials. This end mill is intended for use in CNC machining centers with standard end mill holders and is installed by machinists and tooling specialists in precision metal cutting environments.

The SGS 77203 is engineered for finishing cuts in steel, stainless steel, cast iron, superalloys, and titanium, as well as hard materials. Its right-hand flute direction and right-hand cutting geometry suit standard CNC spindle setups. The straight-cylindrical shank with h6 tolerance provides a secure, repeatable fit in end mill holders. The close pitch flute design and high helix style support chip evacuation during finishing passes on difficult-to-machine workpiece materials.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard materials
• 0.03 inch corner radius with tolerance of -0.0020 to 0.0000 inches for controlled edge geometry
• 7 helical flutes with variable index geometry to reduce harmonic vibration during finishing
• TiN coating improves surface hardness and reduces tool wear on abrasive workpiece materials
• 2 inch length of cut on a 4 inch overall length straight-cylindrical shank for extended reach applications
• Right-hand cut and right-hand flute direction; single end configuration for standard CNC use

Compatibility

Designed for use with standard end mill holders. Suitable for finishing operations on steel, stainless steel, cast iron, superalloys, titanium, and hard materials. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the CNC spindle and machine tool are fully powered down and at rest before changing tooling. The straight-cylindrical shank should be seated to the correct gage depth in a clean, properly torqued end mill holder per the holder manufacturer specifications. Verify runout with a dial indicator after installation before initiating any cutting cycle.