Tool-flo 563825LJ5R Grooving Insert FLG3125 GP3 Left Hand

Product Description

The TOOL-FLO 563825LJ5R is a solid carbide grooving insert designed for precision external grooving and parting operations on CNC lathes and turning centers. Built to the FLG3125 insert style in grade GP3, it features a PVD-applied TiN coating over a micrograin carbide substrate, delivering edge sharpness and wear resistance suited for ferrous and non-ferrous materials. The cutting width measures 0.1252 inches (3.18 mm) with a maximum depth of cut reaching 0.1799 inches (4.57 mm). The left-hand orientation and positive rake geometry make this insert a direct-fit component for Flo-Lock toolholders. Machinists and CNC operators working in production turning environments install this insert as part of a qualified, repeatable grooving setup.

This insert is intended for use in the TOOL-FLO Flo-Lock grooving system, specifically in left-hand toolholder configurations. It suits applications where narrow-width grooving, undercut machining, or parting operations require consistent depth control and a stable cutting edge. The GP3 grade and PVD TiN finish make it applicable across a range of workpiece materials in medium to high-volume turning operations. The 3/8 inch gage diameter and ISO code FLG-3125L confirm fitment within the Flo-Lock insert pocket family.

Key Features

• Solid micrograin carbide substrate for improved edge retention and resistance to chipping
• PVD TiN coating applied to GP3 grade for reduced friction and extended tool life
• Cutting width of 0.1252 inches (3.18 mm) for precise groove sizing
• Maximum depth of cut of 0.1799 inches (4.57 mm) within a 0.1500 to 0.2000 inch range
• Positive rake angle of 55 degrees reduces cutting forces on the workpiece
• Left-hand orientation with 3-degree lead angle for directional grooving control
• Corner radius range of 0.0050 to 0.0100 inches for controlled edge geometry

Compatibility

Designed for use with TOOL-FLO Flo-Lock series left-hand grooving toolholders accepting the FLG-3125L insert pocket (ISO code FLG-3125L, gage diameter 3/8 inch).

Installation Notes

Installation is performed by machinists or CNC setup technicians. The machine spindle must be stopped and the turret fully de-energized before changing inserts. Use the manufacturer-recommended torx or hex key to seat the insert securely in the Flo-Lock pocket, ensuring the insert is fully seated against the pocket locating surfaces before resuming operation. Do not use worn or damaged toolholders, as improper seating can cause insert fracture or dimensional error in the finished groove.