Accupro 75286526 DNMG110404 Carbide Turning Insert

Product Description

The ACCUPRO 75286526 is a DNMG-style indexable carbide turning insert designed for precision external turning operations on CNC and manual lathes. It carries ANSI insert code DNMG110404 and ISO insert code DNMG331, with a 55-degree diamond (rhombic) shape and a neutral hand orientation. The insert is manufactured in grade ACP25M with a CVD coating and features the WM+ chip breaker geometry. With four usable cutting edges and a negative side clearance, this insert delivers consistent tool life across steel, stainless steel, and cast iron applications. Corner radius measures 0.40 mm (0.0157 inches).

This insert is suited for turning steel (P-class), stainless steel (M-class), and cast iron (K-class) workpieces in both roughing and finishing passes where wear resistance and toughness are required. The WM+ chip breaker geometry manages chip flow effectively across this material range. It is appropriate for production turning cells, job shop lathes, and toolroom applications where a reliable general-purpose turning insert is needed. Machinists and CNC operators in metalworking environments are the primary users.

Key Features

• DNMG110404 (ANSI) / DNMG331 (ISO) insert code for direct toolholder compatibility
• ACP25M carbide grade with CVD coating for high wear resistance across multiple workpiece materials
• WM+ chip breaker geometry suited for steel, stainless steel, and cast iron
• Four cutting edges per insert for extended tool life and cost efficiency
• Neutral hand orientation for flexible toolholder placement
• Compatible with clamp, lever lock, pin, and screw insert-holding methods

Compatibility

Designed for use in DNMG-style toolholders that accept a D-shape (55-degree) insert with tolerance code M, clearance code N, and a 0.1512-inch hole diameter. Verify toolholder specifications against ANSI code DNMG110404 or ISO code DNMG331 before ordering.

Installation Notes

Insert seating and clamping should be performed with the machine spindle locked and all power isolated from the lathe. Use the toolholder manufacturer's recommended torque procedure for the specific clamping method (clamp, lever lock, pin, or screw) — do not over-tighten, as this can fracture the insert. Inspect the insert pocket and chip groove for debris before seating a new edge. Index or replace the insert when surface finish or dimensional tolerance degrades, not after visible edge breakage.