Kennametal 5591907 SNMG432MP Turning Insert KCM25B Carbide

Product Description

The KENNAMETAL 5591907 is a solid carbide turning insert in the SNMG432MP geometry, offered in the KCM25B grade with a multilayer CVD coating system consisting of TiCN, Al2O3, and TiOCN. It carries a 90-degree square shape, a neutral hand orientation, and a negative rake angle of 6 degrees with chamfered and honed cutting edges. The inscribed circle measures 0.5000 inches, insert length is 0.5000 inches, thickness is 0.1875 inches, and the corner radius is 0.0313 inches. Eight cutting edges are available per insert, providing significant index life on qualifying operations. This insert belongs to the KENLOC series and is installed by machinists and CNC turning specialists in production and job-shop environments.

This insert is designed for turning, facing, and boring operations on steel, stainless steel, and superalloys including titanium. The MP chip breaker geometry supports both roughing and medium machining applications. The KCM25B grade delivers high toughness on steel workpieces and moderate wear resistance combined with toughness on stainless steel. Maximum depth of cut reaches 0.1665 inches. The insert is held by clamp or pin methods and is compatible with negative-style SNMG toolholders operating within the ANSI size code 432 and ISO size code 120408 specifications.

Key Features

• Multilayer CVD coating: TiCN, Al2O3, and TiOCN for wear resistance across multiple workpiece materials
• 8 cutting edges per insert for extended index life and lower per-edge cost
• MP chip breaker geometry rated for both roughing and medium machining
• KCM25B grade optimized for steel and stainless steel with high toughness characteristics
• Neutral hand insert accepts clamp or pin holding methods in SNMG-compatible toolholders
• Conforms to ANSI and ISO standards: ANSI SNMG432, ISO SNMG120408

Compatibility

Designed for use in negative-style SNMG toolholders conforming to ANSI size code 432 and ISO size code 120408. Suitable for turning, facing, and boring operations on steel, stainless steel, and superalloys including titanium. Compatible with clamp and pin holding systems in the KENLOC series and equivalent toolholder configurations.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing the insert. Inspect the toolholder pocket and seating surfaces for chips or damage before seating the new insert. Verify clamp or pin torque per the toolholder manufacturer's specification and confirm insert seating before resuming cuts.