Accupro ED99921232 Square End Mill 1 in 3 Flute Ticn

Product Description

The ACCUPRO ED99921232 is a single-end, square-profile end mill designed for milling steel, stainless, and alloy materials in CNC machining centers and manual mills. Built from powdered metal with a TiCN (titanium carbonitride) finish, it delivers good wear resistance and thermal hardness at an accessible price point compared to solid carbide tooling. The cutter measures 1 inch in diameter with a 3-inch length of cut, a 1-inch shank diameter, and a 5-1/2-inch overall length. Three spiral flutes at a 42-degree helix angle promote chip evacuation and reduce chatter during aggressive cuts. Centercutting geometry allows plunge entry directly into the workpiece.

This end mill is suited for general-purpose peripheral milling, slotting, and plunge operations on ferrous and non-ferrous workpiece materials in both job-shop and production environments. The right-hand cut and right-hand flute orientation match standard spindle rotation on the vast majority of vertical machining centers and manual knee mills. The 42-degree helix angle makes it a practical choice for finishing passes and medium-chip-load roughing where tool deflection must be managed on longer reaches.

Key Features

• Powdered metal construction with TiCN finish for improved wear resistance over high-speed steel
• 42-degree helix spiral flute for aggressive chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Three flutes balance chip clearance and surface finish across a wide range of feed rates
• Right-hand cut, right-hand flute — compatible with standard CNC and manual spindle setups
• 1-inch shank diameter with tight shank tolerance (-0.0001 / -0.0005 inches) for secure tool-holder engagement

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool for CNC vertical machining centers and manual mills accepting a 1-inch straight shank. Confirm spindle taper, collet, or end mill holder bore before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before seating or removing the tool from the holder. Use a calibrated torque wrench on set-screws or draw bolts per the tool-holder manufacturer specifications — do not over-torque. Verify runout with a dial indicator after securing the tool; excessive runout shortens tool life and degrades surface finish.