Accupro ED99921234 Square End Mill 1 in 3 Flute Ticn

Product Description

The ACCUPRO ED99921234 is a single-end square end mill designed for precision milling operations in metal and alloy workpieces. It is manufactured from powdered metal and finished with a TiCN (Titanium Carbonitride) coating, which improves surface hardness and heat resistance compared to uncoated tooling. The 1 inch cutting diameter, 4 inch length of cut, and 3-flute spiral geometry make it well suited for slotting, profiling, and peripheral milling where chip evacuation and cut quality are priorities. The 42-degree helix angle promotes smooth cutting action and reduced chatter. This tool is centercutting, allowing it to plunge directly into the workpiece.

This end mill is used in vertical and horizontal machining centers, CNC mills, and manual knee mills across job shops, tool rooms, and production environments. Its 1 inch shank diameter fits standard R8, CAT, BT, and HSK toolholders with a 1 inch bore. The 6.5 inch overall length provides reach for deeper setups where a standard-length tool would not clear the fixture. Right-hand cut and right-hand flute orientation are standard for conventional and climb milling on most CNC and manual spindles.

Key Features

• TiCN coating provides increased surface hardness and heat resistance for extended tool life in ferrous materials
• 42-degree helix angle reduces cutting forces and chatter in longer-reach applications
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• 3-flute spiral geometry balances chip clearing with rigidity for a 1 inch diameter tool
• Powdered metal substrate offers a fine-grain structure for a sharp, consistent cutting edge
• Right-hand cut and right-hand flute for compatibility with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or direct substitute for standard 1 inch diameter, 3-flute square end mills with a 1 inch shank. Fits any toolholder accepting a 1 inch straight shank.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and locked before inserting or removing the tool from the holder. Verify holder bore cleanliness and shank runout with a dial indicator before cutting to avoid premature edge wear. Follow shop-specific feeds, speeds, and depth-of-cut parameters for the workpiece material and machine rigidity.