Kyocera 0.025 ENDMILL 3FL BN TA SGM03808 ENDMILL - Micro Milling
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM03808
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1. Product Overview
The Kyocera 0.025 ENDMILL 3FL BN Grade TA (SGM03808) is a precision-engineered solid carbide micro endmill designed for high-performance CNC milling operations. Manufactured in Japan with ultra-fine grain carbide substrate and advanced TiAlN-based PVD coating, this tool delivers exceptional dimensional accuracy, superior surface finish quality, and extended tool life in demanding micro-machining applications.
With a cutting diameter of 0.025" (0.635 mm), this ball-nose endmill is optimized for 3D contouring, profiling, and finish milling of intricate geometries in steel, stainless steel, and hardened materials up to 55 HRC. The 3-flute design provides larger chip gullets for improved chip evacuation, making it ideal for slotting and pocketing applications where chip clearance is critical. The stronger core cross-section also enhances tool rigidity for improved stability in micro-machining.
2. ISO Designation Breakdown
| Designator | Meaning | Specification |
|---|---|---|
| SGM | Series Code | Solid Carbide Micro Endmill |
| 03 | Diameter Class | 0.025" Micro Range |
| 80 | Geometry Variant | Ball Nose, 3FL, Standard Length |
| TA | Grade Designation | TiAlN Coated for Steel/SS |
| BN | Coating Series | Black Nano Multi-layer PVD |
3. Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 0.025" (0.635 mm) | h6 (-0.004 to -0.009 mm) |
| Flute Length (APMX) | 0.075" | +0.00 / -0.05 mm |
| Overall Length (OAL) | 1-1/2" | +0.00 / -0.50 mm |
| Shank Diameter (DCON) | 1/8" | h6 |
| Corner Radius (RE) | 0.0025" | +0.002 / -0.000 mm |
| Number of Flutes (Z) | 3 | — |
| Helix Angle | 35° | ±1° |
| Core Diameter | 65% of DC | — |
| Point Geometry | Ball Nose (Spherical) | Form accuracy ≤ 5 μm |
4. Grade Details — Key Grade Characteristics
| Property | Specification |
|---|---|
| Carbide Substrate | Ultra-fine grain carbide (0.5 μm) |
| Coating System | TiAlN-based multi-layer PVD coating (BN series) |
| Hardness | HRA 92.5 |
| Transverse Rupture Strength | 4,200 MPa |
| Coating Color | Black-Bronze |
| Max Operating Temperature | Up to 1,100°C |
| Key Features | Superior oxidation resistance, excellent adhesion strength, low friction coefficient |
5. Grade Comparison Matrix
| Grade | Coating | Hardness | Max Temp | Primary Use |
|---|---|---|---|---|
| TA (BN) | TiAlN Multi-layer | HRA 92.5 | 1,100°C | Steel, SS, Hardened Steel |
| PR (PR) | TiAlN + DLC | HRA 91.8 | 900°C | Aluminum, Non-ferrous |
| CA (CA) | AlCrN | HRA 93.0 | 1,200°C | Hardened Steel >55 HRC |
| GW (GW) | TiSiN | HRA 92.0 | 1,050°C | General Purpose / Cast Iron |
6. Chipbreaker Profile
The 0.025 ENDMILL features a specialized micro-flute geometry optimized for chip evacuation in small-diameter milling. Optimized 3-flute parabolic core with enhanced chip gullet volume. The 35° helix angle provides aggressive chip shearing action while maintaining tool stability. Variable pitch spacing (unequal flute spacing) suppresses regenerative chatter.
| Feature | Description |
|---|---|
| Flute Profile | Parabolic core with polished rake face |
| Rake Angle | 8° positive (optimized for steel) |
| Clearance Angle | 12° primary, 25° secondary |
| Edge Preparation | Micro-honed (T-land) for edge stability |
| Surface Finish | Ra 0.1 μm flute surface (polished) |
7. Recommended Applications & Workpiece Materials
| Material Group | Material Examples | Hardness Range | Suitability |
|---|---|---|---|
| Carbon & Alloy Steels | 1045, 4140, 4340 | < 45 HRC | ★★★★★ Excellent |
| Stainless Steels | 304, 316, 17-4PH, 420 | < 40 HRC | ★★★★★ Excellent |
| Tool & Die Steels | D2, A2, H13, M2 | 45–55 HRC | ★★★★☆ Very Good |
| Cast Irons | Gray CI, Ductile CI | 180–260 HB | ★★★★☆ Very Good |
| Titanium Alloys | Ti-6Al-4V, Ti-5Al-2.5Sn | < 38 HRC | ★★★☆☆ Good (reduced speed) |
| Hardened Steels | SKD11, SKH51 | 50–55 HRC | ★★★☆☆ Good (finish only) |
8. Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| 3D Contouring / Profiling | ★★★★☆ | Primary application; ball nose excels at continuous path milling |
| Finish Milling | ★★★★★ | Mirror surface finish achievable with optimized parameters |
| Semi-Finish Milling | ★★★★★ | Use ae ≤ 0.3 × DC for best results |
| Slot Milling | ★★★★★ | Excellent chip evacuation; primary strength of 3-flute design |
| Plunge Milling | ★★★★☆ | Stronger core allows more aggressive plunge rates |
| Trochoidal Milling | ★★★★★ | Superior chip clearance in deep pocketing |
9. Recommended Cutting Conditions
| Material | Cutting Speed Vc (m/min) | Feed per Tooth fz (mm) | ax (mm) | ae (mm) |
|---|---|---|---|---|
| Carbon Steel (< 45 HRC) | 80-120 | 0.0007-0.0012 | ≤ 1.0 × DC | 0.05–0.20 × DC |
| Stainless Steel | 60-90 | 0.0005-0.0008 | ≤ 0.8 × DC | 0.05–0.15 × DC |
| Aluminum Alloy | 150-250 | 0.0010-0.0020 | ≤ 1.5 × DC | 0.10–0.30 × DC |
| Hardened Steel (50–55 HRC) | 40–60 | 0.005–0.015 | ≤ 0.3 × DC | 0.02–0.08 × DC |
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece clamping, and coolant application. Use high-pressure coolant (70+ bar) for best chip evacuation in deep cavities.
10. Operating Guidelines
- Rigidity: Ensure minimal tool overhang. Use shortest possible gauge length. Runout must be < 5 μm at tool tip.
- Coolant: Flood coolant or minimum quantity lubrication (MQL) recommended. For steel/stainless, use water-soluble coolant at 8–10% concentration.
- Speed Range: 12,000-28,000 RPM (depending on machine capability and workpiece material).
- Entry Strategy: Use helical ramp entry or circular interpolation entry. Avoid direct plunge into solid material.
- Chip Evacuation: Maintain positive chip flow. Use air blast or through-spindle coolant if available.
- Tool Life Monitoring: Monitor flank wear (VB). Replace when VB > 0.05 mm for finish operations or > 0.10 mm for roughing.
- Workholding: Rigid workpiece clamping essential. Minimize vibration for micro-diameter tools.
11. Toolholder Compatibility
| Holder Type | Specification | Compatibility |
|---|---|---|
| Collet Chuck | ER11 / ER16 precision collet (≤ 5 μm runout) | ★★★★★ Recommended |
| Hydraulic Chuck | HSK-E32 / E40, ISO 10/15 taper | ★★★★★ Excellent damping |
| Shrink Fit | 3–5 mm engagement length minimum | ★★★★☆ Good for high-speed |
| Milling Chuck | Mechanical clamping with < 10 μm runout | ★★★☆☆ Acceptable |
12. Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGM03808 |
| Packaging | Individual plastic tube with foam insert, labeled with barcode |
| Minimum Order Quantity | 1 piece |
| Bulk Packaging | 10 pieces per inner box, 100 pieces per master carton |
| Warranty | Full manufacturer warranty against material and manufacturing defects |
| Certification | ISO 9001:2015, ISO 14001:2015 compliant manufacturing |
13. Catalog Meta Data
| Field | Value |
|---|---|
| Product Line | Kyocera SGM Series — Solid Carbide Micro Endmills |
| Series Family | Micro Milling Tools (0.010" – 0.125" range) |
| Tool Category | Ball Nose Endmill, 3FL, Standard Length |
| Coating Family | BN Series (TiAlN-based Black Nano) |
| Grade Family | TA — Steel & Stainless Steel Grade |
| Industry Segments | Aerospace, Medical, Mold & Die, Precision Engineering |
| Replacement Parts | Not applicable — solid carbide disposable tool |
| Cross-Reference | Comparable to: OSG AE-MS, Union Tool C-CES, Guhring 3055 |
Disclaimer: All technical data, dimensions, and cutting parameters are provided as general guidance. Actual performance depends on machine condition, workpiece material, setup rigidity, and coolant application. Always verify parameters with test cuts before production runs. Kyocera and SGM are registered trademarks of Kyocera Corporation.
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
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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。
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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.
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