Kyocera DCMT070204GK CA320 TME01806 Finishing Insert
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- Stock: In Stock
- Model: CA320
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TME01806
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Product Overview
The DCMT070204GK CA320 (TME01806) is a premium-grade indexable carbide insert manufactured by Kyocera in Japan. Designed for precision finishing operations, this finishing insert combines an ultra-fine grain carbide substrate with a multi-layer CVD coating to deliver exceptional wear resistance, thermal stability, and chip control.
With its 55° rhombic (diamond) geometry, 7.94 mm inscribed circle, and 0.40 mm nose radius, the DCMT070204GK is optimized for steel, stainless steel, cast iron machining. The precision finishing (g-type) profile ensures reliable chip evacuation across a broad spectrum of cutting parameters, reducing downtime and improving surface integrity.
ISO Designation Breakdown
The DCMT070204GK designation follows ISO 1832 standard nomenclature for indexable inserts:
| Position | Code | Parameter | Specification |
|---|---|---|---|
| 1 | D | Insert Shape | 55° Rhombic (Diamond) |
| 2 | C | Clearance Angle | 7° |
| 3 | M | Tolerance Class | ±0.05 mm (IC), ±0.13 mm (T) |
| 4 | T | Fixing & Type | Single-sided with hole (3D chipbreaker) |
| 5 | 07 | Inscribed Circle | 7.94 mm |
| 6 | 02 | Insert Thickness | 2.38 mm |
| 7 | 04 | Nose Radius | 0.40 mm |
| 8 | GK | Chipbreaker | Precision Finishing (G-Type) |
Engineering Dimensions & Geometry
All dimensions conform to ISO 1832:2017 tolerances. Measurements are nominal values at 20°C.
| Dimension | Value | Tolerance | Notes |
|---|---|---|---|
| Inscribed Circle (IC) | 7.94 mm | ±0.05 mm | ISO 1832 |
| Insert Thickness (S) | 2.38 mm | ±0.13 mm | Nominal |
| Nose Radius (rε) | 0.40 mm | ±0.10 mm | Critical for surface finish |
| Corner Angle | 55°° | ±1° | Included angle |
| Clearance Angle | 7° | ±1° | Relief angle |
| Hole Diameter | 5.16 mm (standard) | ±0.08 mm | For clamping |
| Overall Length | 11.12 mm | ±0.20 mm | Approximate |
| Weight (per insert) | 0.36 g | ±0.05 g | Carbide density ~14.5 g/cm³ |
Grade Details – Key Grade Characteristics
The CA320 grade is a CVD-coated ultra-fine grain carbide engineered for medium to high-speed turning of ferrous materials. The coating architecture provides a thermal barrier and chemical stability at elevated temperatures.
| Property | Value | Test Standard |
|---|---|---|
| Substrate | Ultra-fine grain tungsten carbide (WC-Co) | ISO 4499 |
| Coating | CVD Multi-layer (TiCN-Al₂O₃-TiN) | ISO 4499 |
| Hardness | HV 1,650 | ISO 4499 |
| Transverse Rupture Strength | 3,200 MPa | ISO 4499 |
| Thermal Conductivity | 45 W/m·K | ISO 4499 |
| Coefficient of Friction | 0.35 (against steel) | ISO 4499 |
| Oxidation Resistance | Up to 900°C | ISO 4499 |
| Color Code | Gold/Black (TiN top layer) | ISO 4499 |
Grade Comparison Matrix
Select the optimal grade based on your specific machining requirements:
| Grade | Application | Speed Range | Best For |
|---|---|---|---|
| CA320 | General to Heavy Turning | Medium-High | Steel, Stainless, Cast Iron |
| CA310 | Light Finishing | High | Steel, Precision Parts |
| CA330 | Heavy Interruption | Low-Medium | Cast Iron, Forgings |
| CA350 | High-Speed Finishing | Very High | Hardened Steel (>45 HRC) |
Chipbreaker Profile
The GK-type chipbreaker is engineered for precision finishing with a shallow, precision-ground groove. The design prioritizes surface finish quality and minimizes cutting forces. Key characteristics include:
- Shallow precision groove (0.2mm depth) for fine chip control
- Sharp cutting edge with high positive rake angle
- Optimal for depths of cut 0.2–2.0 mm
- Superior surface finish at feed rates 0.05–0.20 mm/rev
- Minimized burr formation on precision components
Recommended Applications & Workpiece Materials
The DCMT070204GK CA320 is primarily recommended for the following material groups:
- Carbon & Alloy Steels: Excellent performance from annealed to quenched & tempered conditions (up to 35 HRC)
- Stainless Steels: Austenitic (304, 316) and ferritic grades; avoid work-hardening by maintaining consistent feed
- Cast Irons: Gray cast iron (GG20–GG30) and nodular cast iron (GGG40–GGG60) with or without chill layers
- Tool Steels: Pre-hardened tool steels (H13, D2, O1) in soft-annealed or pre-hardened state
- Structural Steels: S235, S355, and similar construction steels with scale or rust
Not Recommended For: Titanium alloys, nickel-based superalloys (Inconel), hardened steels >45 HRC, or non-ferrous metals (aluminum, copper) without specialized geometry modifications.
Application Map by Operation
Suitability rating for common turning operations (★★★★★ = Optimal):
| Operation | Suitability | Recommended DOC | Notes |
|---|---|---|---|
| Precision Finishing | ★★★★★ | 0.1–1.0 mm | Primary application |
| Semi-Finishing | ★★★★☆ | 0.5–2.0 mm | Good results |
| Face Turning | ★★★★☆ | 0.2–1.5 mm | Excellent surface finish |
| Profiling | ★★★★★ | 0.1–1.0 mm | Ideal for complex profiles |
| Heavy Roughing | ★☆☆☆☆ | Not recommended | Edge chipping risk |
Recommended Cutting Conditions
Parameters are starting recommendations. Optimize based on machine rigidity, workpiece condition, and required surface finish. Use coolant for steels and stainless; dry or mist for cast iron.
| Workpiece Material | Cutting Speed Vc (m/min) | Feed f (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Low-Carbon Steel (<0.25% C) | 140-200 | 0.20 - 0.80 | 0.2 - 2.0 |
| Medium-Carbon Steel (0.25–0.60% C) | 140-180 | 0.20 - 0.80 | 0.2 - 2.0 |
| Alloy Steel (<40 HRC) | 140-160 | 0.20 - 0.80 | 0.2 - 2.0 |
| Stainless Steel (Austenitic) | 70-110 | 0.20 - 0.80 | 0.2 - 2.0 |
| Gray Cast Iron (HB 180–220) | 120-160 | 0.20 - 0.80 | 0.2 - 2.0 |
| Ductile Cast Iron (HB 150–200) | 120-140 | 0.20 - 0.80 | 0.2 - 2.0 |
Note: Reduce cutting speed by 20–30% for interrupted cuts, cast surfaces with scale, or when using long overhang toolholders. Increase speed by 10–15% for stable, continuous cuts on pre-machined surfaces.
Operating Guidelines
- Entry Angle: Use 45°–75° entering angle for optimal chip control and minimal notch wear
- Lead Angle: Maintain 5°–15° lead angle to distribute cutting force and improve surface finish
- Coolant: High-pressure coolant (70–100 bar) recommended for stainless steel and exotic alloys; dry cutting acceptable for cast iron
- Speed Ramp: Reduce cutting speed by 15% for initial passes on forged or cast surfaces with scale/oxidation
- Depth Progression: For heavy roughing, use progressive depth increments: 50% → 75% → 100% of target DOC
- Tool Overhang: Keep toolholder overhang to minimum (≤4× holder diameter) to prevent vibration
- Edge Preparation: GK-type chipbreaker requires no additional edge honing for standard applications
- Insert Change: Monitor flank wear (VBmax = 0.3 mm for roughing, 0.15 mm for finishing). Replace before catastrophic failure
- Workpiece Rigidity: Ensure minimum L/D ratio of 4:1 for unsupported workpieces; use steady rests for slender shafts
- Chip Management: Verify chip curl and break pattern within first 10 passes; adjust feed if continuous chips form
Toolholder Compatibility
The DCMT070204GK is compatible with standard ISO toolholders designed for 55° rhombic (diamond) inserts with 7° clearance:
- Recommended Toolholders: PDJNR/L, PDQNR/L, DDJNR/L (55° diamond, 7°–11° clearance)
- Clamping System: Lever-lock or screw-clamp mechanisms with top clamp or through-hole clamping
- Seat Angle: Match toolholder seat angle to insert clearance angle (7°)
- Insert Pocket: Ensure pocket is clean and free of chip debris before insert seating
- Torque Spec: Clamp screw torque 2.5–3.5 N·m (do not overtighten to avoid insert fracture)
- Replacement: Use original Kyocera clamping components for guaranteed retention force
Packaging & Ordering Information
| Parameter | Details |
|---|---|
| Standard Pack Quantity | 10 inserts per sealed plastic container |
| Master Carton | 100 inserts (10 containers) per master carton |
| Labeling | Each insert laser-marked with grade, model, and batch code |
| Storage | Store in original packaging at 15–25°C, humidity <60% RH |
| Shelf Life | Unlimited when stored in original sealed packaging |
| MSDS | Available upon request; carbide inserts are non-hazardous solids |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Manufacturer Part Number | TME01806 |
| Kyocera Catalog Series | CA320 Series – CVD Coated Carbide |
| ISO Application Group | P15–P35, M15–M25, K15–K25 |
| Industry Standards | ISO 1832, ANSI B212.4, JIS B 4120 |
| Coating Technology | CVD Multi-layer (TiCN/Al₂O₃/TiN) |
| Substrate Class | Ultra-fine grain WC-Co (0.8 μm) |
| Country of Manufacture | Japan |
| Warranty | Full manufacturer defect warranty (materials & workmanship) |
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
発送・在庫情報
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-
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。
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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.
