Promax US362280 Square End Mill 3/4 in 3 Flute Carbide

Product Description

The PROMAX US362280 is a solid carbide square end mill designed for precision milling operations in metal fabrication and machining environments. With a 3/4-inch mill diameter, 1-inch length of cut, and a 3-inch overall length, this tool handles slotting, profiling, and peripheral milling on a range of workpiece materials. The 46/48 degree variable helix geometry reduces chatter and improves chip evacuation compared to standard fixed-helix tools. A ZrN (zirconium nitride) coating increases surface hardness and heat resistance, extending tool life in production runs. This end mill is installed and operated by machinists and CNC programmers working with vertical or horizontal milling machines and machining centers.

This end mill is suited for use in job shops, production machining cells, and tool rooms handling ferrous and non-ferrous materials. The three-flute configuration balances chip clearance with cutting edge count, making it a practical choice for both roughing and semi-finishing passes. The variable index feature further suppresses harmonic vibration, which is especially useful in longer reach setups or when cutting harder alloys. The straight-cylindrical shank is compatible with standard ER collet chucks and end mill holders commonly found in CNC and manual milling setups.

Key Features

• 3/4-inch mill diameter with a matching 3/4-inch straight-cylindrical shank for secure tool holding
• 46/48 degree variable helix with variable index for reduced chatter and improved surface finish
• ZrN coating for elevated hardness and thermal resistance during cutting
• Three-flute design optimizes chip evacuation while maintaining cutting edge strength
• Centercutting geometry allows plunge entry into workpiece material
• Micrograin solid carbide substrate provides rigidity and wear resistance

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill for standard 3/4-inch ER collet chucks and end mill holders on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's tooling and runout specifications. Confirm collet or holder bore size matches the 3/4-inch shank before securing. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the tool. Follow applicable shop safety procedures and machine guarding requirements during setup and operation.