Accupro 2500171 Roughing End Mill 1 in 4 Flute Altin Carbide

Product Description

The ACCUPRO 2500171 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), it handles high-heat cutting environments in steel, stainless, and hardened materials. The 1-inch diameter cutter features four right-hand flutes with a fine pitch and a stub-length design, giving it high rigidity with a 1.25-inch length of cut and 3-inch overall length. Right-hand cutting direction and centercutting capability make it suitable for plunge entry and standard peripheral milling. Machinists and tool-and-die professionals use this type of end mill for roughing passes where material removal rate is the priority.

This end mill fits standard 1-inch diameter toolholders and collet chucks on vertical machining centers, CNC mills, and manual knee mills. Its stub-length geometry reduces deflection during heavy roughing cuts in ferrous and non-ferrous metals. The AlTiN coating extends tool life in dry or high-speed machining where coolant may not be used. It is sold as a single-end tool and is not designed for regrinding to a double-end configuration. Shank diameter matches the cutting diameter at 1 inch, simplifying toolholder selection.

Key Features

• Micrograin solid carbide construction for toughness and wear resistance
• AlTiN coating rated for high-heat, high-speed cutting applications
• Four right-hand flutes with fine pitch geometry for efficient chip evacuation
• Centercutting design allows plunge entry into workpiece
• Stub-length build minimizes deflection during aggressive roughing passes
• Shank diameter tolerance of +0.0001 to -0.0004 inches ensures consistent toolholder fit

Compatibility

Designed for use in standard 1-inch diameter collet chucks and end mill holders on CNC vertical machining centers and manual milling machines. Compatible with ER-style and straight-bore toolholding systems accepting a 1-inch shank diameter.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in an e-stop or locked-out state per applicable shop safety procedures. Seat the shank fully into the toolholder and torque the retention hardware to the toolholder manufacturer's specification. Verify runout at the cutting edge with a dial indicator before initiating a cut. Do not exceed the tool's rated length of cut of 1.25 inches during any single pass.