Kyocera Z4T DLC CEM03908 Corner Radius Endmill - Micro Milling
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: CEM03908
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Product Overview
The Kyocera Z4T CEM03908 is a precision-engineered 4-flute corner radius solid carbide endmill featuring an advanced DLC (Diamond-Like Carbon) coating. Manufactured in Japan to exacting ISO standards, this tool delivers exceptional wear resistance, low friction, and superior surface finish quality for demanding micro-milling operations.
Designed for CNC machining centers and high-speed milling applications, the Z4T series combines a robust carbide substrate with a smooth DLC coating to minimize built-up edge and extend tool life across a wide range of ferrous and non-ferrous materials.
ISO Designation Breakdown
| Code Segment | Parameter | Value |
|---|---|---|
| Z4T | Series / Tool Type | 4-Flute Corner Radius Endmill |
| 0200 | Cutting Diameter (d) | 20.0mm |
| 050 | Length of Cut (ap) | 5.0mm |
| 0400 | Overall Length (L) | 400mm |
| 080 | Shank Diameter (D) | 8.0mm |
| R005 | Corner Radius (r) | R0.05mm |
Engineering Dimensions & Geometry
| Dimension | Symbol | Value | Tolerance |
|---|---|---|---|
| Cutting Diameter | d | 20.0mm | h7 |
| Length of Cut | ap | 5.0mm | +0.3 / -0.0 mm |
| Overall Length | L | 400mm | +0.0 / -1.5 mm |
| Shank Diameter | D | 8.0mm | h6 |
| Corner Radius | r | R0.05mm | ±0.005 mm |
| Helix Angle | λ | 35° | ±2° |
| Core Diameter Ratio | — | 60% | — |
| Radial Rake Angle | γf | 8° | ±1° |
| Number of Flutes | Z | 4 | — |
| Center Cutting | — | Yes | — |
Grade Details - Key Grade Characteristics
Grade Designation: DLC (Diamond-Like Carbon)
| Property | Value / Rating | Performance Benefit |
|---|---|---|
| Coating Type | DLC (Diamond-Like Carbon) | Ultra-low friction, anti-adhesion |
| Coating Hardness (HV) | ~2,500 – 3,000 | Exceptional wear resistance |
| Oxidation Temperature | ~400°C | Stable in high-speed dry cutting |
| Friction Coefficient | ~0.1 – 0.2 | Reduced cutting forces, less heat |
| Substrate Material | Super Micro-Grain Carbide | High toughness + edge stability |
| Grain Size | <0.5 μm | Superior edge sharpness |
| Color | Black | Visual wear indicator |
Grade Comparison Matrix
| Grade | Coating | Wear Resistance | Heat Resistance | Toughness | Best For |
|---|---|---|---|---|---|
| DLC | DLC | ★★★★★ | ★★★★☆ | ★★★★☆ | Non-ferrous, plastics, finishing |
| MEGACOAT | PVD TiAlN | ★★★★☆ | ★★★★★ | ★★★★☆ | Steel, stainless steel, general |
| MEGACOAT HARD | Multi-layer PVD | ★★★★★ | ★★★★★ | ★★★☆☆ | Hardened steel >50 HRC |
| Uncoated | — | ★★☆☆☆ | ★★☆☆☆ | ★★★★★ | Aluminum, copper, plastics |
Chipbreaker Profile
Profile Type: High-Efficiency Chipbreaker
| Feature | Specification | Machining Benefit |
|---|---|---|
| Gash Design | Deep flute with optimized gash angle | Smooth chip evacuation, reduced clogging |
| Flute Geometry | 4-flute, constant helix | Balanced cutting forces, stable finish |
| Edge Preparation | Micro-honed with DLC finish | Minimized burr, extended edge life |
| Core Design | High core thickness ratio (60%) | Superior rigidity, reduced deflection |
Recommended Applications & Workpiece Materials
| Material Group | Examples | Machinability | Recommended Operation |
|---|---|---|---|
| Carbon Steel | C45, C50, 1045, 1050 | ★★★★★ | Slotting, shouldering, profiling |
| Alloy Steel | 4140, 4340, 8620 | ★★★★☆ | Roughing, semi-finishing |
| Stainless Steel | 304, 316, 17-4PH | ★★★★☆ | Finishing, contouring |
| Cast Iron | GG25, GGG40, FC250 | ★★★★★ | General milling, face milling |
| Aluminum Alloys | 6061, 7075, 2024 | ★★★★★ | High-speed finishing, pocketing |
| Copper / Brass | C110, C360, CuZn37 | ★★★★★ | Mirror finish applications |
| Plastics & Composites | POM, PA66, GFRP | ★★★★★ | Precision contouring, drilling |
Application Map by Operation
| Operation | Suitability | Depth of Cut (ap) | Width of Cut (ae) |
|---|---|---|---|
| Slotting | ●●●○○ | ≤ 1.0 × d | = d |
| Shouldering | ●●●●● | ≤ 1.5 × d | 0.1 – 0.5 × d |
| Profiling / Contouring | ●●●●● | ≤ 2.0 × d | 0.05 – 0.2 × d |
| Pocketing | ●●●●○ | ≤ 1.0 × d | 0.3 – 0.7 × d |
| Ramping | ●●●○○ | ≤ 0.5 × d | = d |
| Plunge Milling | ●●○○○ | ≤ 0.3 × d | = d |
| High-Feed Finishing | ●●●●● | 0.1 – 0.3 × d | 0.05 – 0.1 × d |
Recommended Cutting Conditions
Values are starting recommendations. Optimize based on machine rigidity, workpiece fixture, and coolant delivery.
| Workpiece Material | Cutting Speed Vc (m/min) | Feed per Tooth fz (mm) | RPM (approx.) | Coolant |
|---|---|---|---|---|
| Carbon Steel (< 700 N/mm²) | 115 | 0.023 | 8,901 | Emulsion / MQL |
| Alloy Steel (700–1000 N/mm²) | 95 | 0.02 | 7,565 | Emulsion / MQL |
| Stainless Steel (Austenitic) | 72 | 0.038 | 6,675 | Emulsion (high pressure) |
| Cast Iron (Gray / Ductile) | 145 | 0.028 | 9,791 | Dry / Compressed air |
| Aluminum Alloys | 247 | 0.056 | 13,753 | Mist / Air blast |
| Copper / Brass | 297 | 0.062 | 16,503 | Dry / Mist |
| Plastics / Composites | 347 | 0.084 | 20,629 | Dry / Vacuum |
Operating Guidelines
- Run-out Check: Ensure spindle run-out is < 0.005 mm (TIR) at the tool tip. Excessive run-out reduces tool life and surface quality.
- Tool Overhang: Minimize overhang to 3×D or less for optimal rigidity. Use hydraulic or shrink-fit holders for micro-tools.
- Ramping Entry: When ramping, reduce feed rate to 50% and maintain ramp angle ≤ 2° to prevent corner chipping.
- Coolant Strategy: For steel and stainless, use high-pressure coolant (≥ 70 bar) directed at the cutting zone. For aluminum, air blast or MQL is preferred to avoid thermal shock.
- Chip Evacuation: Ensure adequate chip evacuation, especially in pocketing and slotting. Chip recutting is the primary cause of premature wear in micro endmills.
- Speed & Feed Ramp: Start at 70% of recommended Vc and fz, then increase gradually while monitoring tool wear and surface finish.
- Corner Radius Benefit: The R0.05mm corner radius distributes cutting forces across the edge, reducing chipping and extending tool life compared to sharp corners.
Toolholder Compatibility
| Holder Type | Compatibility | Notes |
|---|---|---|
| ER Collet Chuck (ER11 / ER16) | Compatible | Use precision collets (≤ 0.005 mm run-out) |
| Hydraulic Expansion Chuck | Recommended | Best damping for micro-milling; excellent TIR |
| Shrink-Fit Holder | Recommended | Highest gripping force and concentricity |
| Weldon Side-Lock | Not Recommended | Risk of run-out and tool damage for micro-tools |
| Milling Chuck (KM / HSK) | Compatible | Verify clamping range matches shank diameter |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number (MPN) | CEM03908 |
| Brand | Kyocera (Japan) |
| Packaging Type | Individual plastic tube with foam insert |
| Quantity per Pack | 1 piece |
| Minimum Order Quantity | 1 piece |
| Warranty | Full manufacturer warranty against defects |
| Certification | ISO 9001:2015 manufacturing standard |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Family | Z4T Series – Solid Carbide Micro Endmills |
| Product Line | Kyocera Microtools (Precision Cutting Tools) |
| ISO Category | Solid Endmill – Corner Radius Type |
| DIN Standard | DIN 6527 / DIN 844 |
| Material Group Compatibility | P (Steel), M (Stainless), K (Cast Iron), N (Non-ferrous) |
| Coating Technology | DLC – Smooth Diamond-Like Carbon |
| Country of Manufacture | Japan |
| Catalog Page Reference | Solid Endmill – Micro Tool Section |
Why Buy from Kyotow.com?
Genuine OEM industrial cutting tools backed by full manufacturer warranty. Expert CNC tooling application support, fast worldwide shipping with tracked delivery, and bulk order discounts available. Every tool is inspected for authenticity and quality before dispatch.
✓ 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):
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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
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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.
