Accupro 311670 Square End Mill 0.5in 5 Flute Solid Carbide

Product Description

The ACCUPRO 311670 is a solid carbide square end mill designed for high-performance milling in demanding machining environments. With a 0.5 inch (12.70 mm) cutting diameter, 2 inch length of cut, and 5-flute spiral geometry, it removes material efficiently while maintaining surface finish quality. The 38-degree helix angle promotes smooth chip evacuation and reduces cutting forces. An AlTiCrN coating provides thermal resistance and wear protection at elevated cutting temperatures. The variable index flute spacing minimizes chatter and vibration during high-speed passes. This tool is installed and operated by machinists and CNC programmers in production and job-shop settings.

The 311670 is suited for milling ferrous and hardened workpiece materials in vertical and horizontal machining centers. The single-end, right-hand cutting, right-hand spiral configuration makes it a direct fit for standard ER and side-lock toolholders. At 4 inches overall length with a 0.5 inch shank diameter, it works in close-clearance setups where extended-reach tooling is not required. The micrograin carbide substrate supports aggressive feeds and speeds in steel, stainless, and hardened alloys. It is sold as a single unit.

Key Features

• 0.5 inch cutting diameter with 2 inch length of cut for deep-slot and side-milling operations
• 5-flute spiral geometry increases feed rate capability compared to 4-flute designs
• 38-degree helix angle improves chip flow and lowers radial cutting pressure
• AlTiCrN coating extends tool life in high-heat ferrous and hardened-material applications
• Variable index flute spacing reduces harmonic vibration and chatter
• Centercutting design allows plunge entry without a pre-drilled start hole
• Micrograin solid carbide substrate provides edge strength and dimensional stability

Compatibility

Designed as a direct-fit replacement end mill for standard 0.5 inch bore ER collet chucks, Weldon side-lock holders, and hydraulic toolholders used in CNC vertical and horizontal machining centers.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank to the minimum recommended engagement depth in the toolholder and torque the retention hardware per the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before initiating any cutting program.