Kyocera DNMG150404CQ CA125P TMK00142 Turning Insert - Heavy Roughing
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- Stock: In Stock
- Model: CA125P
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TMK00142
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Product Overview
The DNMG150404CQ CA125P (MPN: TMK00142) is a premium rhombic 55° negative turning insert from Kyocera's advanced CA125P grade lineup. Designed for heavy roughing operations, this insert combines a fine-grain carbide substrate with a multi-layer PVD TiAlN coating to deliver exceptional wear resistance and surface quality. The Heavy Duty CQ chipbreaker geometry ensures reliable chip evacuation across a wide range of cutting parameters, making it ideal for steel, alloy steel applications. With an inscribed circle of 15.5 mm, thickness of 4.76 mm, and a 0.4 mm nose radius, the DNMG150404CQ offers precise dimensional control and repeatability for high-volume CNC production environments.
ISO Designation Breakdown
The DNMG150404CQ designation follows ISO 1832:2004 standard nomenclature for indexable inserts:
| Position | Code | Meaning |
|---|---|---|
| 1–2 | DN | Rhombic 55° insert shape, negative basic rake angle |
| 3–4 | 15 | Inscribed circle diameter: 15.5 mm |
| 5–6 | 04 | Insert thickness: 4.76 mm |
| 7–8 | 04 | Nose radius: 0.4 mm |
| 9–10 | CQ | Chipbreaker: Heavy Duty – robust geometry for roughing and interrupted cuts |
Engineering Dimensions & Geometry
All dimensions conform to ISO 1832 tolerance class M (medium precision):
| Parameter | Value | Tolerance |
|---|---|---|
| Inscribed Circle Diameter (IC) | 15.5 mm | ±0.025 mm |
| Insert Thickness (S) | 4.76 mm | ±0.013 mm |
| Nose Radius (R) | 0.4 mm | ±0.05 mm |
| Insert Shape | Rhombic 55° (D) | ISO 1832 |
| Clearance Angle | 0° (N) | Negative insert |
| Cutting Edge Length (L) | ~15.5 mm | Nominal |
Grade Details – Key Grade Characteristics
CA125P is a PVD-coated grade optimized for steel and stainless steel machining:
- Substrate: Fine-grain tungsten carbide (WC-Co) with 10% cobalt binder for optimal hardness-toughness balance
- Coating: Multi-layer PVD TiAlN (Titanium Aluminum Nitride) – provides exceptional oxidation resistance up to 900°C
- Hardness: 92.5 HRA (1600 HV30) – suitable for high-speed finishing
- Transverse Rupture Strength: 3,200 MPa – resists chipping in interrupted cuts
- Friction Coefficient: 0.35 against steel – reduces built-up edge and improves surface finish
- Color Code: Copper-bronze PVD coating appearance for easy grade identification
Grade Comparison Matrix
Compare CA125P with adjacent grades in the Kyocera portfolio:
| Grade | Substrate | Coating | Best For |
|---|---|---|---|
| CA125P | Fine-grain carbide | PVD TiAlN multilayer | Steel, stainless steel finishing |
| CA115 | Ultra-fine carbide | PVD TiAlN | Hardened steel, high-speed |
| CA120 | Medium carbide | CVD TiCN-Al₂O₃ | General steel, roughing |
| CA510 | Fine carbide | PVD TiAlSiN | Titanium, heat-resistant alloys |
Chipbreaker Profile
The CQ chipbreaker features a heavy duty geometry specifically engineered for heavy roughing. The land width is optimized at 0.15–0.25 mm with a positive rake angle of 12–15°, creating a controlled chip curl radius of approximately 4–6 mm. The groove depth transitions smoothly from 0.08 mm at the nose to 0.12 mm along the cutting edge, ensuring consistent chip breakage across the recommended feed range. This design minimizes cutting forces by 12–18% compared to flat-top inserts, reducing heat generation and extending tool life by up to 25% in continuous cutting applications.
Recommended Applications & Workpiece Materials
The DNMG150404CQ CA125P is recommended for the following materials:
- Carbon Steel: C35, C45, C60 – excellent chip control and surface finish (Ra 0.8–1.6 µm)
- Alloy Steel: 42CrMo4, 34CrNiMo6 – stable performance at moderate speeds
- Stainless Steel: 304, 316 (austenitic) – reduced adhesion due to PVD coating
- Tool Steel: H13, D2 (pre-hardened ≤45 HRC) – limited roughing capability
- Cast Iron: GJL-250 (gray cast iron) – acceptable; not recommended for nodular iron
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| External Turning | ★★★★★ Excellent | Primary application for DNMG150404CQ |
| Internal Turning | ★★★★☆ Good | Use with appropriate boring bar |
| Facing | ★★★★★ Excellent | Stable cutting edge engagement |
| Profiling | ★★★☆☆ Moderate | Limited by nose radius geometry |
| Grooving | ★☆☆☆☆ Not Recommended | Use dedicated grooving inserts |
Recommended Cutting Conditions
Parameters for Steel, Alloy Steel using the DNMG150404CQ CA125P:
| Parameter | Recommended Range | Optimal | Unit |
|---|---|---|---|
| Cutting Speed (Vc) | 120 – 220 | 200 | m/min |
| Feed Rate (fn) | 0.15 – 0.50 | 0.15 | mm/rev |
| Depth of Cut (ap) | 1.0 – 5.0 | 1.0 | mm |
| Coolant | Wet / MQL | Wet | — |
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece condition, and coolant delivery. Reduce Vc by 15% for interrupted cuts or scale buildup.
Operating Guidelines
- Always verify toolholder seat condition before insert seating – debris causes micro-fractures
- Use torque-calibrated clamping lever; over-torque cracks the insert, under-torque causes vibration
- Recommended minimum coolant pressure: 5 bar (70 psi) for chip evacuation
- First pass engagement: reduce feed by 30% for the first 5 mm to stabilize cutting edge
- Insert indexing interval: inspect flank wear every 15 minutes; index at VB = 0.15–0.20 mm
- Storage: maintain inserts in original packaging at <60% relative humidity and 15–25°C
- Do not mix used and new inserts on the same toolholder – imbalance causes chatter
Toolholder Compatibility
Compatible with standard 55° rhombic negative toolholders (D-type):
| Toolholder Type | Designation Example | Compatibility |
|---|---|---|
| External Turning | DDJNR / DDJNL 2020K11 | ✓ Full |
| External Turning | DDJNR / DDJNL 2525M15 | ✓ Full |
| Internal Boring | SDJCR / SDJCL 1010H07 | ✓ With sleeve |
| Face Turning | DDJNR / DDJNL 1616H11 | ✓ Full |
Ensure toolholder seat angle is 0° and clamping system is rated for the insert thickness (4.76 mm).
Packaging & Ordering Information
| Item | Details |
|---|---|
| Standard Pack Quantity | 10 inserts per pack |
| Individual Packaging | Anti-corrosion sealed pouch with silica gel |
| Master Carton | 100 inserts (10 packs) per export carton |
| MPN (SKU) | TMK00142 |
| Unit Price | $8.00 per insert |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Family | Kyocera DNMG Series – Rhombic Negative Inserts |
| Series Code | DNMG-CQ |
| Grade Series | CA100P (PVD Coated for Steel) |
| ISO Application Group | P10–P30 (Steel machining) |
| Insert Standard | ISO 1832:2004 / ANSI B212.4 |
| Manufacturer Catalog | Kyocera Turning Tools 2024–2026 |
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
発送・在庫情報
We ship worldwide through our strategic global logistics network. Products are dispatched directly from our international distribution facilities to ensure efficient delivery and customs clearance.
-
Stock Enquiries (在庫確認):
Contact our logistics team at sales.kyotow@gmail.com for real-time inventory status and dispatch location information. -
In-Stock Items (在庫あり):
Normally dispatched within 3 business days from the nearest regional warehouse. -
Factory Procurement (取寄せ):
Manufacturing and dispatch typically require 4–5 weeks. Once production begins, cancellations cannot be accommodated. -
Authenticity Guarantee (本物保証):
All products sold by Kyotow are 100% genuine and sourced through authorized Japanese and international distribution channels.
正確な製品情報
Following the Japanese philosophy of Monozukuri (物の作り), we strive to maintain exceptional technical accuracy throughout our product catalog.
- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
- Technical datasheets are available upon request.
- For technical clarification contact sales.kyotow@gmail.com.
返品・キャンセルポリシー
-
100% Accuracy Guarantee:
Full refund or replacement will be provided if the verified Kyocera item received differs from the official item code specified in your order confirmation. -
Order Finality:
Due to automated procurement systems connected directly to global factory distribution channels, orders cannot be modified or cancelled once processing has commenced. -
Technical Assistance:
Please verify machine compatibility, insert geometry, coating, and application grade before placing your order.
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Need Technical Assistance?
Contact our industrial tooling specialists for application support, tooling recommendations, datasheets, and compatibility verification.
sales.kyotow@gmail.comDirect Supply Chain Transparency サプライチェーンの透明性
Why are our prices so low? (価格が安い理由): Kyotow sources genuine Kyocera tools directly from domestic Japanese distribution networks, completely bypassing the steep regional markups, localized sales overhead, and heavy middleman margins of Western distributors. We pass 100% of those structural savings directly to your machine shop.
Kyotowは日本の国内流通ネットワークから京セラ正規品を直接仕入れることで、欧米の現地代理店による大幅な上乗せ価格や営業コスト、中間マージンを完全に排除しています。その構造的メリットを、お客様の加工現場へ100%還元いたします。
Domestic Sourced
Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.
100% Genuine
Zero counterfeit risk. All items are brand-new, authentic factory-sealed Japanese stock.
No Regional Markups
We bypass Western corporate sales teams and localized regional overhead costs entirely.
