Accupro 75503904 Turning Insert CCMT431 Carbide Cvd

Product Description

The ACCUPRO 75503904 is a carbide turning insert designed for precision metal cutting on CNC and manual lathes. It carries the ANSI code CCMT431 and ISO code CCMT120404, identifying it as a diamond-shaped (80-degree included angle) insert with a 7-degree relief angle and a 0.40 mm (0.0157 inch) corner radius. The insert features a CVD coating and a WSF+ chip breaker geometry, making it suited for achieving consistent chip control across a range of steel and cast iron workpiece materials. With a positive side clearance and screw-holding method, it seats securely in standard CCMT-style toolholders. Each insert provides 2 cutting edges.

This insert is used in turning operations on steel, stainless steel, and cast iron workpieces where high to moderate wear resistance combined with reliable toughness is required. It fits standard CCMT-style external turning toolholders and is appropriate for production and job-shop environments where repeatable surface finish and tool life are priorities. The ACP15K grade and CVD coating make it suitable for moderate-to-finishing depth-of-cut applications, with a maximum depth of cut of 2.25 mm (0.0886 inches).

Key Features

• ANSI insert code CCMT431 and ISO code CCMT120404 for standard toolholder compatibility
• CVD-coated carbide grade ACP15K for high wear resistance on steel, stainless steel, and cast iron
• WSF+ chip breaker geometry for consistent chip control in finishing and semi-finishing cuts
• 80-degree diamond (rhombic) insert shape with positive side clearance for reduced cutting forces
• 0.40 mm corner radius for controlled surface finish at moderate feed rates
• 2 usable cutting edges per insert for extended value per unit

Compatibility

Designed for use in CCMT-style screw-clamp turning toolholders. Compatible workpiece materials include Steel (P), Stainless Steel (M), and Cast Iron (K) as designated by ISO primary workpiece material codes.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or indexing the insert. Use the appropriate torx or hex key to tighten the clamping screw to toolholder manufacturer specifications - do not overtighten, as this can fracture the insert. Inspect the insert pocket and clamping screw condition before each insert change.