Accupro E999921223 Square End Mill 3/4 in 3 Flute Pm

Product Description

The ACCUPRO E999921223 is a square-end, single-end mill designed for material removal and profiling operations on milling machines and machining centers. Built from powdered metal (PM), this cutter delivers consistent edge integrity across a range of ferrous and non-ferrous workpiece materials. The tool features a 3/4-inch cutting diameter, a 3-inch length of cut, and a 42-degree helix angle that promotes smooth chip evacuation and reduces cutting forces. With three spiral flutes and a right-hand cut and right-hand flute configuration, it is suited for conventional and climb milling strategies. The centercutting geometry allows plunge entry directly into the workpiece. Machinists, tool and die makers, and CNC operators working in job shops or production environments are the primary users.

This end mill is applied in milling operations requiring a full 3-inch depth of engagement across slots, pockets, shoulders, and contoured profiles. The 3/4-inch shank diameter matches standard ER, end mill, and side-lock holders found on vertical and horizontal milling machines. The uncoated PM construction makes it suitable for use in both dry and conventionally flooded cutting conditions. The 5-1/4-inch overall length accommodates moderate reach requirements without sacrificing rigidity. No chipbreaker or variable-helix features are present, keeping the tool profile straightforward for general-purpose material removal applications.

Key Features

• 3/4-inch cutting diameter with mill diameter tolerance of +0.0015 / -0.0000 inches for consistent fitment
• 3-inch length of cut supports deep slot and pocket milling in a single pass
• 42-degree helix angle promotes efficient chip flow and reduces heat buildup at the cutting edge
• Centercutting design allows direct plunge entry without pre-drilling
• Powdered metal construction provides uniform carbide distribution and repeatable edge sharpness
• Right-hand cut and right-hand spiral flute geometry compatible with standard spindle rotation on most milling equipment
• Uncoated finish allows resharpening and suits a broad range of cutting fluids and materials

Compatibility

Designed as an OEM-style general-purpose square end mill compatible with 3/4-inch end mill holders, ER collet chucks, and side-lock tool holders used on standard vertical and horizontal milling machines and CNC machining centers.

Installation Notes

Installation of end mills should be performed by a qualified machinist following the machine tool manufacturer's toolholder torque and runout specifications. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from any holder. Verify holder bore cleanliness and shank seating depth prior to tightening to minimize runout and extend tool life. Do not exceed the rated length-of-cut engagement or operate without appropriate workholding in compliance with applicable shop safety standards.