Tool-flo 79125APN4C Grooving Insert GP50C Vee Bottom

Product Description

The TOOL-FLO 79125APN4C is a solid carbide grooving insert designed for precision grooving operations on CNC lathes and turning centers. Manufactured to the GP50C grade with a PVD-applied TiN coating, this insert delivers consistent performance on stainless steel and non-ferrous metals. The VDB insert style features a Vee Bottom seating profile for secure, repeatable positioning in compatible toolholders. With a cutting width of 0.125 inches and a double-end configuration, this insert provides two usable cutting edges per piece, extending tool life and reducing cost per edge. A chip breaker (P style) is ground into the insert to manage chip flow during grooving passes.

This insert is suited for external and internal grooving applications in production and job-shop environments where tight tolerances and surface finish are required. The Vee Bottom (VDB) series is commonly used in aerospace, medical, and general machining contexts where stainless steel and non-ferrous alloys are the primary workpiece materials. Machinists and CNC programmers working with interrupted cuts or groove-to-shoulder profiles will find the neutral hand orientation and clamp-style holding method compatible with standard VDB toolholders.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance on stainless steel and non-ferrous metals
• 0.125 inch cutting width with 0.250 inch cutting height for controlled grooving depth
• Double-end insert design provides two cutting edges per insert
• Vee Bottom (VDB) seating style ensures repeatable insert positioning under clamp holding
• P-style chip breaker integrated for effective chip control during grooving passes
• Corner radius of 0.015 inches for controlled edge geometry and surface finish

Compatibility

Designed for use with VDB-style grooving toolholders that accept the 125 insert size and clamp-style holding method. ISO code VDB125A015CB. Compatible with toolholders referencing manufacturers catalog number VDB 125 A015-CB.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing inserts. Ensure the toolholder pocket and clamping surfaces are clean and free of chips before inserting. Verify clamp torque is applied per the toolholder manufacturers specification to prevent insert movement during cutting.