Kyocera DNMG150416PG CA125P TMK00029 Turning Insert - General Turning

Product Overview

The DNMG150416PG is a premium 55° Diamond Insert (Double-Sided) manufactured by Kyocera under grade CA125P. Engineered for Medium Roughing to Semi-Finishing, this indexable carbide insert delivers exceptional dimensional accuracy, superior surface finish, and extended tool life in demanding CNC turning operations. The insert features a 1.6 mm and is optimized for machining Carbon steel, alloy steel, stainless steel, and cast iron.

ISO Designation Breakdown

Engineering Dimensions & Geometry

The DNMG150416PG is precision-ground to tight tolerances ensuring consistent seating in standard toolholders. Key dimensional data includes an inscribed circle diameter of MG mm, overall thickness of 15 mm, and a corner nose radius of 1.6 mm. The neutral to slightly positive rake for strength and versatility. These geometric attributes minimize cutting vibration and promote stable chip formation across the recommended parameter window.

Grade Details — Key Grade Characteristics

CA125P PVD Coated Carbide is a high-performance grade featuring:

• Excellent balance of wear resistance and fracture toughness for general turning
• Superior resistance to built-up edge (BUE) in steel and stainless steel
• Stable performance in continuous and light-to-medium interrupted cuts
• Good thermal shock resistance for both dry and wet machining
• Optimized for medium to high cutting speeds in general machining
• Enhanced crater wear resistance compared to uncoated grades

The CA125P substrate is paired with a PVD (Physical Vapor Deposition) Multi-layer Coating to create a thermally stable cutting edge capable of maintaining hardness at elevated temperatures generated during high-speed steel machining.

Grade Comparison Matrix

CA125P offers improved toughness over CA115P and is better suited for semi-roughing to medium finishing. It sits between CA120 (finishing) and CA130 (roughing) in the Kyocera grade spectrum.

Chipbreaker Profile

PG — General Purpose

Versatile chipbreaker for medium roughing to semi-finishing. Balanced edge strength and chip control across varying depths and feeds. Reliable in continuous and lightly interrupted cuts.

Key Chipbreaker Attributes:

• Neutral to slightly positive rake for strength and versatility
• Robust chip breaking across broad parameter ranges
• Optimized land width for edge strength and finish quality balance
• Precision-ground peripheral edges for accurate repeatability

Recommended Applications & Workpiece Materials

The DNMG150416PG CA125P is recommended for the following materials and application types:

• Carbon Steel: Continuous and semi-interrupted turning (C45, C60, 1045, 1060)
• Alloy Steel: Medium alloy steels up to 40 HRC (4140, 4340, 16MnCr5)
• Stainless Steel: Austenitic and martensitic grades (304, 316, 410, 420)
• Cast Iron: Gray cast iron and nodular cast iron (GG25, GGG40)
• Forged Components: Scale-covered surfaces with light interruption

Application Map by Operation

Recommended Cutting Conditions

Medium to high speeds, depths 0.5–4.0 mm, feeds 0.15–0.45 mm/rev.

Operating Guidelines

• Always verify insert seating and clamping force before starting the spindle.
• Use coolant or cutting fluid for materials prone to work-hardening (e.g., austenitic stainless steels).
• Ensure rigid tooling setup to minimize vibration; use anti-vibration boring bars for deep internal operations.
• Monitor flank wear (VB) and replace inserts when wear reaches 0.3 mm for roughing or 0.15 mm for finishing.
• Index the insert to a fresh edge if chipping, built-up edge, or discoloration is observed.
• For best surface finish, use the highest cutting speed within the recommended range and the lowest stable feed rate.

Toolholder Compatibility

The DNMG150416PG is compatible with standard ISO toolholders designed for 55° Diamond Insert (Double-Sided) inserts with a MG mm inscribed circle and 15 mm thickness. Recommended toolholder series include:

• External Turning: Standard lever-lock or screw-clamp holders (e.g., MDJNR, MDQNR for D-inserts)
• Internal Turning: Boring bars with 93° or 107° approach angles (e.g., S25R-MDJNR)
• Clamp System: Ensure holder chip groove matches insert thickness (15 mm) for proper seating
• Coolant Delivery: High-pressure coolant toolholders recommended for chip evacuation in blind-hole boring

Packaging & Ordering Information

Catalog Meta Data