Kyocera DNMG150604HQ CA5525 CVD Coated Carbide Turning Insert (Imperial: DNMG441HQ)
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Kyocera DNMG150604HQ CA5525 CVD Coated Carbide Turning Insert (ANSI: DNMG441HQ)
1. Product Overview
Which 55° diamond indexable turning insert provides superior chip control, smooth cutting forces, and edge wear resistance during general-purpose steel machining on CNC lathes?
The Kyocera DNMG150604HQ CA5525 (Imperial ANSI designation: DNMG 441HQ CA5525) is an industrial-grade, double-sided 55° rhombic negative turning insert engineered for profiling, facing, and continuous turning. Manufactured according to ISO 1832 and ANSI B212.4 international standards, this 4-edge insert pairs Kyocera's high-performance CA5525 CVD coated grade with the flagship HQ general-purpose chipbreaker geometry.
The specialized 3D HQ chipbreaker is designed with a curved rake pocket and optimized edge wave that breaks stringy steel chips across a wide range of feed rates (0.12 - 0.35 mm/rev). The CA5525 grade features advanced micro-structure control over its thick CVD Al2O3 and TiCN coating layers, providing extraordinary protection against flank wear, cratering, and plastic deformation during high-speed ISO P (steel) turning operations.
2. Key Features
- CA5525 Advanced CVD Coating Tech: Integrates a high-fracture-toughness substrate with thick Al2O3 and TiCN CVD layers for excellent thermal shock resistance and long tool life in steel.
- Flagship HQ General-Purpose Chipbreaker: Curved 3D pocket geometry curls continuous steel chips into small C-shapes, preventing dangerous nests around the chuck and workpiece.
- Double-Sided 4-Corner Economy: 55° rhombic (D-style) negative geometry provides 4 fully functional indexable cutting edges to minimize cost per component.
- Precision 0.4mm Nose Radius (RE 0.4 / 1/64"): Lowers radial cutting force, reducing chatter on thin-walled parts while delivering clean surface finishes (Ra < 0.8 μm).
- Universal Toolholder Compatibility: Standardized 15mm edge length fits standard DDJNR, MDJNR, and PDJNR external turning shanks.
3. Technical Specifications & Metric/Imperial Model Comparison
ISO / ANSI Designation Code Breakdown
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Full Insert Model Designation | DNMG150604HQ CA5525 | DNMG441HQ CA5525 |
| Inscribed Circle (IC) | 12.70 mm | 0.500 in (1/2") |
| Thickness (S) | 6.35 mm | 0.250 in (1/4") |
| Corner Nose Radius (RE) | 0.40 mm | 0.0156 in (1/64") |
| Fixing Hole Diameter (d1) | 5.16 mm | 0.203 in |
| Cutting Edge Length (L) | 15.50 mm | 0.610 in |
| Usable Cutting Edges | 4 Edges (Double-Sided) | 4 Edges (Double-Sided) |
Recommended Cutting Parameters for CA5525 Grade
| ISO Material Group | Cutting Speed Vc (m/min / SFM) | Feed Rate fn (mm/rev / IPR) | Depth of Cut ap (mm / in) |
|---|---|---|---|
| ISO P Carbon & Alloy Steel (1045, 4140, 4340) | 150 - 300 m/min (490 - 980 SFM) | 0.15 - 0.38 mm/rev (.006 - .015 IPR) | 1.0 - 4.5 mm (.039 - .177 in) |
| ISO M Austenitic Stainless Steel (304, 316) | 120 - 220 m/min (390 - 720 SFM) | 0.12 - 0.30 mm/rev (.005 - .012 IPR) | 0.8 - 3.5 mm (.031 - .138 in) |
| ISO K Gray & Ductile Cast Iron | 140 - 260 m/min (460 - 850 SFM) | 0.15 - 0.35 mm/rev (.006 - .014 IPR) | 1.0 - 4.0 mm (.039 - .157 in) |
Need Precise Feeds and Speeds Calculations for Your CNC Lathe?
Optimize tool life, prevent chip packing, and calculate precise spindle speeds (RPM) and feed rates (IPM/MMPM) tailored to your exact workpiece diameter and material hardness.
Open Interactive Speeds and Feeds Calculator →Matching External & Internal Turning Toolholders
Mount DNMG 150604 / DNMG 441 inserts directly into standard ISO double-clamp or top-and-hole clamp turning shanks:
Browse Compatible DDJNR / MDJNR Turning Toolholders →4. Product Application Scenarios
Kyocera DNMG150604HQ CA5525 inserts excel in general-purpose precision metal turning:
- General Machinery Shaft Turning: Smooth, efficient longitudinal turning and facing of carbon steels (1045, 1018) and alloy steels (4140).
- Contour Profiling: 55° diamond geometry enables multi-directional profiling and shoulder undercut clearance.
- High-Mix Low-Volume CNC Production: The versatile HQ breaker eliminates insert changes when transitioning between light finishing and medium roughing.
- Automotive & Hydraulic Parts: Production turning of hydraulic cylinder rods, bushings, and automotive drive shafts.
5. Tooling & Equipment Compatibility
Conforms strictly to ISO 1832 and ANSI B212.4 indexable insert standards. Fully compatible with standard DNMG 1506 / DNMG 44 toolholder pockets across major global brands:
KyoceraSandvik CoromantIscarKennametalTungaloyMitsubishi MaterialsSeco ToolsWalter
6. Kyocera Grade Comparison Matrix
| Kyocera Grade | Coating Structure | Primary Application Target | Key Performance Characteristic |
|---|---|---|---|
| CA5525 (Featured) | CVD Multi-Layer (Al2O3 + TiCN) | Steel & Alloy Steel (ISO P) | General purpose balance of high wear resistance and fracture toughness |
| CA5515 | CVD Coated Carbide | High-Speed Steel Turning (ISO P) | Maximum abrasive wear resistance for continuous high-speed finishing |
| PR1535 | MEGACOAT NANO PVD | Stainless Steel & Titanium (ISO M/S) | Advanced nano-coating preventing edge build-up in sticky materials |
7. Why Choose Kyocera Cutting Tools & Verified Reviews
We are an authorized distributor of 100% genuine Kyocera cutting tools. Every pack is factory-sealed with full heat lot traceability.
"The HQ breaker is my go-to choice for medium steel turning."
We run these DNMG150604HQ inserts on our Haas ST-20 lathe turning 1045 steel shafts. The HQ chipbreaker keeps chips short and manageable. Tool life with CA5525 is impressive.
— Eric M., Precision Machine Works (USA) 🇺🇸
"Ottimo controllo del truciolo e stabilità di lavorazione."
La rompitruciolo HQ gestisce benissimo i trucioli senza creare grovigli. Qualità CA5525 molto costante.
— Stefano P., Meccanica di Precisione (Italy) 🇮🇹
"Sehr gute Allround-Platte für die Stahlbearbeitung."
HQ-Spanbrecher funktioniert hervorragend im mittleren Vorschubbereich. Sehr gute Oberflächengüte.
— Thomas K., Maschinenbau (Germany) 🇩🇪
"HQブレーカの切くず分断性能が高く、自動盤でも安心です。"
CA5525材種との組み合わせで長寿命。安定した旋削加工が可能になりました。
— Hiroshi S., Precision Tooling (Japan) 🇯🇵
8. Frequently Asked Questions (AI & Machinist Knowledge Base)
Need Help With Kyocera Inserts?
Looking for a Kyocera equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This Kyocera insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.