Accupro 75536490 Turning Insert DCGT21.51 Carbide Diamond

Product Description

The ACCUPRO 75536490 is a carbide turning insert designed for precision machining of cast iron and non-ferrous materials including aluminum. Conforming to ANSI insert code DCGT21.51 and ISO insert code DCGT070204, this insert features a 55-degree diamond (rhombic) shape with a positive side clearance and a polished ACN15K grade coating. The 0.0315-inch corner radius and neutral hand orientation make it well-suited for light finishing and semi-finishing passes where dimensional accuracy and surface finish are priorities. Licensed machinists and CNC lathe operators are the primary installers of this insert in production and job-shop turning applications.

This insert is applied in turning operations targeting cast iron and aluminum or other non-ferrous workpieces. The ACN15K grade is rated for high wear-resistance to moderate wear-resistance and toughness in both K-grade (cast iron) and N-grade (aluminum and non-ferrous) material categories. The LMF+ chip breaker geometry supports light cutting depths, with a maximum depth of cut of 0.0531 inches (1.35 mm), making it appropriate for finishing operations requiring tight tolerances and consistent surface quality on CNC or manual lathes.

Key Features

• ANSI code DCGT21.51 and ISO code DCGT070204 for standardized toolholder compatibility
• ACN15K carbide grade with polished finish for cast iron and non-ferrous applications
• 55-degree diamond insert shape with 2 cutting edges and positive side clearance
• LMF+ chip breaker geometry optimized for light finishing cuts
• Neutral hand orientation for flexible setup on multiple toolholder configurations
• Screw insert holding method for secure, repeatable seating

Compatibility

Designed as an OEM-style replacement turning insert for DCGT-style toolholders accepting ANSI size code 21.51 and ISO size code 070204 inserts with a 0.25-inch inscribed circle diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert firmly against the toolholder pocket and torque the clamping screw according to the toolholder manufacturer specification. Inspect the insert seat and clamping components for wear or debris before seating a new insert to ensure proper contact and prevent premature edge failure.