Kyocera DNMG150412PH CA115P TML00159 Precision Heavy-Duty

Product Overview

The DNMG150412PH is a 55° rhombic (diamond) negative insert manufactured by Kyocera under grade CA115P. Featuring an 15.875mm (5/8" Inscribed Circle) inscribed circle, 4.76mm (3/16") thickness, and a 1.2mm nose radius, this indexable carbide insert is engineered for high-precision CNC turning operations. The PH – Precision Heavy-Duty geometry ensures controlled chip formation and superior surface finish across a range of steel workpiece materials. With MPN TML00159, this insert is a genuine OEM component backed by full manufacturer specifications.

ISO Designation Breakdown

The model code DNMG150412PH follows ISO 1832 nomenclature for indexable inserts:

• D — 55° Rhombic insert shape with 55° included angle
• N — 0° clearance angle (negative basic insert, requires negative holder rake)
• M — Tolerance class ±0.05mm (inscribed circle), ±0.08mm (thickness), ±0.13mm (hole location)
• G — Cylindrical hole with countersink (40°–60° chamfer) for pin or screw clamping
• 15 — 15.875mm (5/8" Inscribed Circle)
• 04 — 4.76mm (3/16") nominal thickness
• 12 — 1.2mm corner nose radius
• PH — PH – Precision Heavy-Duty chipbreaker code

Engineering Dimensions & Geometry

Grade Details — Key Grade Characteristics

Grade CA115P is a CVD-coated carbide grade developed specifically for steel machining in the ISO P15 application zone. The substrate consists of a fine-grained tungsten carbide (WC-Co) with a cobalt content optimized for hardness and toughness balance. The multi-layer CVD coating architecture typically includes:

• TiCN base layer — Provides adhesion strength and resistance to plastic deformation at high temperatures
• Al₂O₃ middle layer — Offers thermal barrier protection and chemical stability during high-speed cutting
• TiN top layer — Gold-colored identification layer that reduces friction and improves wear detection

The "P" suffix in CA115P denotes a premium micro-grain substrate with enhanced edge integrity, making it particularly suitable for precision finishing where edge chipping must be minimized. The grade exhibits excellent flank wear resistance and crater wear stability under continuous cutting conditions.

Grade Comparison Matrix

How CA115P compares to adjacent grades in the Kyocera steel-turning portfolio:

Chipbreaker Profile

PH – Precision Heavy-Duty

The PH chipbreaker combines a moderate-width groove with a reinforced edge preparation, balancing precision with productivity. It is designed for medium-duty cuts where higher material removal rates are needed while maintaining acceptable surface finish and edge stability.

Key chipbreaker characteristics:

• Rake angle: Optimized for low cutting forces and controlled chip flow
• Groove width: Engineered for 1.2mm nose radius and recommended feed range
• Chip control: Produces short, curled chips that evacuate safely without scratching the finished surface
• Edge preparation: Micro-honed T-land for edge stability without sacrificing sharpness

Recommended Applications & Workpiece Materials

Suitable for precision to medium-duty turning of carbon and alloy steels in continuous to lightly interrupted conditions. Handles small shoulder steps and mild entry variations.

Compatible materials: Carbon steels (C25–C60), alloy steels (4130, 4140, 5150), cast steels, and forged steels up to 35 HRC.

• Plain carbon steels: SAE 1010–1060, DIN C15–C60
• Low-alloy steels: 4130, 4140, 5120, 8620 (annealed or normalized)
• Bearing steels: 52100, SUJ2, 100Cr6
• Tool steels: H13, D2 (in soft condition, pre-hardened ≤ 32 HRC)

Application Map by Operation

External turning, facing, mild contouring, and straight boring on medium-rigidity CNC turning centers.

Recommended Cutting Conditions

Starting parameters for CA115P with DNMG150412PH on carbon and alloy steels (dry or wet):

Operating Guidelines

• Machine Rigidity: Use on CNC lathes with minimum spindle runout ≤ 0.01mm. Ensure toolholder overhang is ≤ 4× holder diameter for boring bars.
• Coolant Strategy: Flood coolant essential for chip evacuation. Maintain coolant concentration at 7–10% for optimal performance.
• Entry Strategy: Use radial or oblique entry to avoid full-depth plunge. Ramp-in at 45° for facing operations.
• Exit Strategy: Reduce feed by 30% in the last 2mm of cut to prevent exit burr and edge micro-chipping.
• Edge Inspection: Check for uniform flank wear (VB ≤ 0.20mm) or crater wear (KT ≤ 0.12mm) before re-indexing. Replace insert if chipping exceeds 0.08mm.
• Workpiece Preparation: Ensure straightness and minimal runout. Cast or forged skins should be removed with a roughing grade before finish passes with DNMG150412PH.

Toolholder Compatibility

The DNMG150412PH is a negative insert with 0° clearance and requires a negative-rake toolholder. Compatible holder families include:

• MDJNR/L15, MDQNR/L15, SDJCR/L15 — 93° external turning, 107.5° profiling
• Clamp type: Lever or screw-down clamping with pin lock
• Insert seat angle: Must match 55° negative geometry
• Shim requirement: Use original Kyocera shim seat S15D (or equivalent) to prevent seat deformation and ensure accurate height alignment

Verify holder compatibility using the Kyocera Tooling Systems catalog or contact our technical support team with your machine spindle and turret specifications.

Packaging & Ordering Information

• Manufacturer Part Number (MPN): TML00159
• Packaging: Genuine Kyocera industrial packaging with holographic authenticity seal. Each insert is laser-marked with grade and model code.
• Minimum Order: Sold individually or in bulk packs (10 inserts per pack). Contact us for volume pricing on 50+ inserts.
• Authenticity: All inserts are sourced directly from Kyocera Corporation, Japan. Verify authenticity via the laser-etched batch code on each insert face.
• Price: $8.0 USD per insert (subject to volume discounts)

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