Sumitomo 14HB978 Carbide Milling Insert Semt 13T3 ACP300

Product Description

The SUMITOMO 14HB978 is a solid carbide milling insert in a square SEMT style, designed for use in indexable milling cutters operating on stainless steel and steel workpieces. This insert carries the ACP300 manufacturer grade with a PVD coating process, delivering consistent cutting performance and edge retention in demanding milling applications. The insert measures 0.5 inches inscribed circle diameter and 0.19 inches thick, with a cutting edge effective length of 0.528 inches. The H chip breaker geometry controls chip evacuation during high-feed or finishing passes. Licensed machinists and CNC machine operators are the primary users of this tooling consumable.

This insert is suited for milling applications involving stainless steel (ISO material code M) and steel (ISO material code P) in both production shop and job shop environments. The SEMT style with a 20-degree relief angle makes it appropriate for use in face milling, shoulder milling, and similar operations where positive cutting action and reduced cutting forces are priorities. It is compatible with the Sumitomo WGX cutter series. Sold individually, with a minimum order quantity of 10 pieces.

Key Features

• Solid carbide construction with ACP300 grade for wear resistance in steel and stainless steel
• PVD coating process for improved edge toughness and heat resistance
• SEMT square insert style with 20-degree relief angle for positive cutting geometry
• H chip breaker for effective chip control in milling operations
• Cutting edge effective length of 0.528 inches with 0.5-inch inscribed circle
• Compatible with Sumitomo WGX cutter series

Compatibility

Designed for use with the Sumitomo WGX cutter series. Suitable for milling stainless steel and steel workpieces. Compatible with SEMT 13T3 insert seats.

Installation Notes

Insert seating and torque should be performed by a qualified machinist or CNC tooling technician following the cutter body manufacturer's torque specifications for the specific tool holder. Ensure the cutter is fully stopped and the machine is locked out before indexing or replacing inserts. Inspect the insert pocket and clamping screw for debris or damage before seating a new insert. Do not mix insert grades or chip breaker styles within the same cutter body unless the application specifically allows it.