Accupro 75551739 CCMT32.51 Carbide Turning Insert

Product Description

The ACCUPRO 75551739 is a CCMT-style carbide turning insert designed for precision external turning operations on CNC and manual lathes. Identified by ANSI code CCMT32.51 and ISO code CCMT09T304, it features an 80-degree diamond (rhombic) insert shape with a positive side clearance and a neutral hand orientation. The CVD coating and ACP15K grade deliver high to moderate wear resistance combined with toughness, making this insert effective across a range of workpiece materials. The corner radius measures 0.40 mm (0.0157 inches) and the insert thickness is 3.97 mm (0.1563 inches). It is held in the toolholder via a screw-clamp method and belongs to the CI series.

This insert is suited for turning applications on steel, stainless steel, and cast iron workpieces, corresponding to ISO material group codes P, M, and K. The WSF+ chip breaker geometry is optimized for finishing and semi-finishing cuts where controlled chip flow and surface finish are priorities. Maximum depth of cut is 2.25 mm (0.0886 inches). It is typically installed by machinists and CNC programmers working in production turning, job shop, and maintenance machining environments. The inscribed circle measures 9.53 mm (0.3752 inches), confirming compatibility with standard CCMT seat toolholders.

Key Features

• ANSI code CCMT32.51 and ISO code CCMT09T304 for direct cross-reference ordering
• CVD-coated ACP15K carbide grade for wear resistance across steel, stainless steel, and cast iron
• 80-degree diamond insert shape (C) with positive side clearance for reduced cutting forces
• WSF+ chip breaker geometry suited for finishing and semi-finishing passes
• Screw-clamp holding method for secure, repeatable seating in the toolholder pocket
• Neutral hand orientation fits both left- and right-hand toolholder configurations

Compatibility

Designed as a direct-fit replacement for standard CCMT32.51 screw-on toolholders accepting an 80-degree diamond insert with a 9.53 mm inscribed circle and positive clearance geometry. Verify toolholder pocket dimensions and insert seat code before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully into the toolholder pocket and tighten the clamping screw to the toolholder manufacturer-specified torque using the appropriate Torx or hex key. Inspect the insert seat and clamp for wear or debris before seating a new insert to ensure accurate positioning and prevent premature edge failure.