Accupro 12178621 Square End Mill 1 in 3 Flute Solid Carbide

Product Description

The ACCUPRO 12178621 is a solid carbide square end mill designed for precision material removal in milling applications. Built from micrograin solid carbide, it offers the rigidity and wear resistance required for demanding cutting operations. The 1 inch diameter tool features a 40-degree helix angle with 3 spiral flutes, promoting efficient chip evacuation and smooth cutting action. At 4 inches overall length with a 1-3/4 inch length of cut, this is a regular-length end mill suited to standard depth-of-cut requirements. It is centercutting, allowing plunge entry into the workpiece. Installation and operation are handled by machinists and CNC tooling professionals.

This end mill is used in general-purpose milling on CNC machining centers and manual mills across job shops, production facilities, and toolrooms. The right-hand cut, right-hand spiral flute configuration is the standard orientation for the majority of vertical and horizontal milling setups. The uncoated micrograin carbide construction makes it appropriate for a range of ferrous and non-ferrous materials where a coated tool is not specified. The 1 inch shank diameter mates directly with standard ER, CAT, BT, or HSK toolholders sized for 1 inch bore.

Key Features

• Solid micrograin carbide construction for high rigidity and wear resistance
• 3 spiral flutes with a 40-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge entry into workpiece material
• Right-hand cut and right-hand flute direction — standard orientation for most milling setups
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent dimensional accuracy
• Uncoated finish — no coating buildup concerns when regrinding or using in specific material applications

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 1 inch bore milling toolholders on CNC machining centers and conventional mills.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Always power down and lock out the machine spindle before loading or unloading tooling. Seat the shank fully into the toolholder and torque the retention mechanism per the toolholder manufacturer's specification. Verify runout at the tool tip with a dial indicator before committing to a production cut.