Walter 6917268 RCMT1204M0-FM4 WSM30S Round Turning Insert

Product Description

The WALTER 6917268 is a round solid carbide turning insert in the RCMT-FM4 series, carrying the Tiger-tec Silver WSM30S grade. It features a 12 mm (0.4724 inch) inscribed circle, a full 6 mm corner radius, and a PVD-applied multilayer coating of TiCN, Al2O3, and Al. The FM4 chip breaker geometry runs a positive rake angle of 6 degrees with a honed cutting edge, promoting clean chip flow and reduced cutting forces. Insert thickness is 0.1875 inch (3/16 inch) and the screw-lock mounting hole measures 4.40 mm (0.1730 inch) in diameter. Licensed machinists and CNC turning professionals install this insert on production and job-shop lathes for demanding material applications.

This insert is rated primarily for stainless steel and superalloys and titanium (ISO material codes M and S) and secondarily for steel (ISO code P), covering material grades M30, S30, and P30. It supports three operations from a single insert style: turning, facing, and boring. Maximum depth of cut reaches 5.00 mm (0.2000 inch). The neutral hand orientation and round shape make it suitable for both conventional and multi-directional toolpaths where a full-radius insert geometry is required. Four cutting edges are available per insert, improving cost-per-edge efficiency on volume production runs.

Key Features

• WSM30S Tiger-tec Silver PVD coating: TiCN, Al2O3, and Al multilayer for thermal and wear resistance on difficult alloys
• Round insert shape with full radius and 360-degree lead angle for multi-directional cutting
• FM4 chip breaker geometry with positive 6-degree rake and honed edge for stainless steel and superalloy applications
• Four usable cutting edges per insert for improved cost-per-edge economy
• Multi-operation capability: turning, facing, and boring from one insert style
• Screw-lock holding method with ISO-standard RCMT geometry for broad toolholder compatibility

Compatibility

Designed for use in RCMT-style screw-lock toolholders conforming to ISO standards; compatible with turning, facing, and boring operations on CNC and manual lathes machining stainless steel, superalloys, titanium, and steel workpieces at material grades M30, S30, and P30.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the toolholder pocket is clean and free of chips before seating the insert. Secure the insert using the appropriate torx or hex drive screw specified by the toolholder manufacturer; do not overtighten. Verify insert seating and edge orientation before resuming cutting operations.