Kyocera SGM03919 BN TA 0.035" 3FL Ball Nose Endmill - Micro Milling
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM03919
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Product Overview
The Kyocera SGM03919 is a premium 3FL ball nose endmill engineered for aerospace component machining with tight tolerances and superior surface finish. With a cutting diameter of 0.035" (0.889 mm), this solid carbide tool features the advanced BN TA coating system, delivering exceptional wear resistance and thermal stability in demanding machining environments.
Designed for high-speed CNC milling centers and micromachining applications, the SGM03919 combines optimized flute geometry with a 38° helix angle to ensure smooth chip evacuation and minimal cutting forces. The ball nose profile with a nominal corner radius of 0.0175" enables precise 3D contouring and finishing operations with surface finishes down to Ra 0.2 μm.
ISO Designation Breakdown
| Designation Element | Code | Description |
|---|---|---|
| Manufacturer Series | SGM | Kyocera Micro Endmill Series – Solid Carbide General Machining |
| Product Code | 03919 | Unique catalog identifier for 0.035" diameter specification |
| Tool Type | ENDMILL | Endmill – peripheral and face milling capable |
| Flute Count | 3FL | 3 Flutes – balanced chip load distribution for finishing |
| Nose Geometry | BN | Ball Nose – spherical cutting profile for 3D surfacing |
| Coating Grade | BN TA | TiAlN-based nano-composite coating for high-temperature stability |
Engineering Dimensions & Geometry
| Parameter | Imperial | Metric | Tolerance |
|---|---|---|---|
| Cutting Diameter (D1) | 0.035" | 0.889 mm | h6 |
| Corner Radius (R) | 0.0175" | 0.445 mm | ±0.005 mm |
| Flute Length (L1) | 0.500" | 12.70 mm | +0.05/-0.00 mm |
| Overall Length (L) | 1.496" | 38 mm | ±0.50 mm |
| Shank Diameter (D2) | 0.125" | 3.175 mm | h6 |
| Helix Angle | — | 38° | ±1° |
| Number of Flutes | — | 3 | — |
| Core Diameter | 0.0210" | 0.533 mm | ±0.01 mm |
Grade Details – Key Grade Characteristics
The BN TA grade represents Kyocera's advanced coating technology specifically developed for micro-endmill applications. TA coating delivers a hardness of 3,300 HV with low coefficient of friction (0.35).
- Coating Composition: Nano-layered TiAlN with aluminum content optimized for thermal stability
- Coating Thickness: 2.5–3.0 μm total thickness with alternating layer period of 15–20 nm
- Substrate Material: Ultra-fine grain tungsten carbide (0.6 μm) with 12% cobalt binder
- Hardness: 3,300 HV (coating) / 1,650 HV (substrate)
- Friction Coefficient: 0.35 against steel, 0.40 against titanium alloys
- Oxidation Threshold: 900°C in ambient atmosphere, 1,050°C in inert gas
- Edge Preparation: Micro-honed radius of 3–5 μm for chipping resistance
- Surface Finish: Ra 0.15 μm on rake face, Ra 0.10 μm on flank face
Grade Comparison Matrix
| Property | BN TA (This Tool) | Standard TiAlN | Uncoated Carbide |
|---|---|---|---|
| Hardness (HV) | 3,300 | 2,800 | 1,650 |
| Max Operating Temp | 900°C | 750°C | 500°C |
| Tool Life (Steel) | 100% (baseline) | 75% | 35% |
| Tool Life (Stainless) | 100% (baseline) | 70% | 30% |
| Tool Life (Titanium) | 100% (baseline) | 65% | 25% |
| Friction Coefficient | 0.35 | 0.45 | 0.60 |
| Recommended Vc (Steel) | 67.0 m/min | 53.6 m/min | 33.5 m/min |
Chipbreaker Profile
While traditional chipbreaker geometries are associated with indexable inserts, the SGM03919 incorporates advanced flute surface topography that functions as a continuous chipbreaker along the cutting edge:
- Flute Profile: Parabolic flute form with variable core thickness maximizing rigidity while maintaining chip space
- Rake Face Geometry: Positive rake angle of 8° on peripheral edges, 5° on ball nose tip for controlled chip flow
- Chip Splitting Features: Micro-serrations (0.02 mm pitch) on rake face promoting chip segmentation in long-chipping materials
- Helix Angle Effect: The 38° helix creates a natural chip-curling action, directing chips axially away from the cutting zone
- Edge Conditioning: Variable micro-land width (0.05–0.08 mm) along the cutting edge providing stability in interrupted cuts
- Flute Polishing: Mirror-finished flute surfaces (Ra ≤ 0.1 μm) prevent chip welding and built-up edge formation
Recommended Applications & Workpiece Materials
The SGM03919 with BN TA coating is optimized for the following workpiece materials and application scenarios:
Primary Materials: Titanium alloys (Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo) and commercially pure titanium
| Material Group | Hardness Range | Recommended Operation | Expected Tool Life |
|---|---|---|---|
| Carbon & Alloy Steels | < 45 HRC | 3D Finishing, Contouring | 120–180 min |
| Hardened Tool Steels | 45–55 HRC | Precision Finishing, Engraving | 80–120 min |
| Stainless Steels (Austenitic) | < 200 HB | Cavity Milling, Texturing | 60–90 min |
| Titanium Alloys | 30–38 HRC | Blade Root Forming, Profiling | 40–60 min |
| Nickel Superalloys | 35–45 HRC | Turbine Component Finishing | 30–50 min |
| Aluminum Alloys | < 150 HB | High-Speed 3D Surfacing | 200–300 min |
Application Map by Operation
| Operation Type | Suitability | Max Depth of Cut (ap) | Max Width of Cut (ae) | Notes |
|---|---|---|---|---|
| 3D Contouring / Surfacing | ★★★★★ Excellent | ≤ 0.0525" | ≤ 0.0105" | Optimal for mold & die finishing |
| Slot Milling | ★★★☆☆ Limited | ≤ 0.0262" | = 0.035" | Use reduced feed for full slotting |
| Plunge Milling | ★★★★☆ Good | ≤ 0.0158" | — | Ball nose tip allows axial plunge |
| Ramping / Helical Entry | ★★★★★ Excellent | ≤ 0.0525" | ≤ 0.0105" | Max ramp angle 3° recommended |
| Trochoidal Milling | ★★★★☆ Good | ≤ 0.0420" | ≤ 0.0063" | Excellent chip evacuation |
| Engraving / Marking | ★★★★★ Excellent | ≤ 0.0035" | ≤ 0.0018" | Use highest spindle speeds available |
| Rest Machining | ★★★★★ Excellent | ≤ 0.0525" | ≤ 0.0105" | Ideal for corner picking and detail work |
Recommended Cutting Conditions
Parameters below are starting recommendations. Optimize based on machine rigidity, workpiece fixturing, and surface finish requirements.
| Workpiece Material | Cutting Speed Vc | Feed per Tooth fz | Spindle Speed n | Depth of Cut ap | Width of Cut ae |
|---|---|---|---|---|---|
| Carbon Steel (< 45 HRC) | 67.0 m/min | 0.0068 mm/z | 23,989 RPM | ≤ 0.0525" | ≤ 0.0105" |
| Stainless Steel (304/316) | 45.2 m/min | 0.0054 mm/z | 16,184 RPM | ≤ 0.0420" | ≤ 0.0084" |
| Titanium (Ti-6Al-4V) | 28.5 m/min | 0.0040 mm/z | 10,204 RPM | ≤ 0.0262" | ≤ 0.0053" |
| Hardened Steel (45-55 HRC) | 40.2 m/min | 0.0034 mm/z | 14,393 RPM | ≤ 0.0158" | ≤ 0.0032" |
| Aluminum (7075/6061) | 134.0 m/min | 0.0136 mm/z | 47,978 RPM | ≤ 0.0630" | ≤ 0.0126" |
Operating Guidelines
- Runout Control: Maintain total indicated runout (TIR) below 0.01 mm at the tool tip. Excessive runout causes uneven wear and premature chipping on one flute.
- Coolant Strategy: For steels and stainless, use high-pressure coolant (70+ bar) directed at the cutting zone. For titanium, flood coolant is mandatory to prevent workpiece combustion.
- Entry Strategy: Always use ramp or helical entry; avoid direct 90° plunging except at reduced feed (25% of normal). Maximum recommended ramp angle is 3°.
- Stepover for Finishing: For mirror surface finishes, use stepover (ae) ≤ 10% of tool diameter (0.0035") with high spindle speeds.
- Chip Evacuation: Ensure adequate compressed air blast or coolant flow to prevent chip recutting, especially in deep cavity applications.
- Tool Overhang: Minimize overhang to L/D ≤ 4 for optimal stability. For L/D > 4, reduce cutting parameters by 20% and consider vibration-damping holders.
- Wear Monitoring: Inspect flank wear (VB) every 30 minutes. Retire tool when VB exceeds 0.05 mm (finishing) or 0.10 mm (roughing).
- Speed Ramp-Up: When starting a new job, begin at 70% of recommended Vc and increase in 10% increments while monitoring spindle load and surface finish.
- Workpiece Preparation: Ensure flat, perpendicular datum surfaces and secure fixturing. Vibration from loose workpieces is the primary cause of micro-endmill failure.
- Storage: Store in original packaging away from direct sunlight and humidity. Avoid contact between cutting edges and hard surfaces.
Toolholder Compatibility
Fits hydraulic chucks (Kennametal, Sandvik Coromant) offering 4x damping over collet systems
| Holder Type | Gripping Diameter | Max RPM | Runout @ 3×D | Best For |
|---|---|---|---|---|
| ER Collet (ER11/ER16) | 1/8" (3.175 mm) | 30,000 RPM | ≤ 0.015 mm | General purpose, cost-effective |
| Shrink Fit | 1/8" (3.175 mm) | 50,000 RPM | ≤ 0.003 mm | High-speed finishing, tight tolerances |
| Hydraulic Chuck | 1/8" (3.175 mm) | 25,000 RPM | ≤ 0.005 mm | Heavy cuts, vibration damping |
| Micro-Milling Chuck | 3–4 mm | 60,000 RPM | ≤ 0.002 mm | Micro-machining, dental, electronics |
Packaging & Ordering Information
Delivered in custom-fit cardboard sleeve with tool identification label and barcode
| Item | Details |
|---|---|
| Minimum Order Quantity | 1 piece (no MOQ for standard items) |
| Lead Time | Stock item – ships within 24 hours of order confirmation |
| Shelf Life | 36 months from date of manufacture when stored in original packaging at 15–25°C, <60% RH |
| Warranty | Kyocera standard warranty against manufacturing defects. Does not cover misuse, incorrect parameters, or improper handling. |
| Returns | Unused tools in original packaging may be returned within 30 days. Custom or modified tools are non-returnable. |
| Bulk Pricing | Contact Kyotow.com sales for quantities above 50 pieces. Institutional and OEM pricing available. |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Kyocera Catalog Series | SGM – Solid Carbide Micro Endmills |
| Catalog Page Reference | Page 144, Edition A (2025) |
| ECCN Classification | 1C998 (standard carbide cutting tools) |
| Country of Manufacture | Japan |
| HS Code | 8207.70.60 (Interchangeable tools for milling) |
| RoHS Compliance | Compliant – Lead-free substrate and coating |
| REACH Status | No SVHC substances above 0.1% w/w threshold |
| ISO 9001:2015 | Manufactured under Kyocera certified quality management system |
| Batch Traceability | Laser-marked lot number on shank for full manufacturing traceability |
✓ 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.
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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.
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We bypass Western corporate sales teams and localized regional overhead costs entirely.
