Kyocera 1/32 TA SGM07139 DRILL 2FL - CNC Precision Drilling
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM07139
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Product Overview
The Kyocera 1/32 DRILL 2FL TA SGM07139 is a premium solid-carbide micro-drill engineered for high-precision CNC machining operations. Featuring a TA grade substrate with advanced PVD coating, this tool delivers exceptional wear resistance, superior chip evacuation, and extended tool life in demanding production environments. Designed for drilling holes from 0.031 mm diameter, it ensures mirror-finish hole quality and tight dimensional tolerances across aerospace, medical, and precision engineering applications.
ISO Designation Breakdown
| ISO Element | Code | Description |
|---|---|---|
| Tool Type | DC | Solid carbide drill |
| Cutting Diameter | 0.031 | Nominal cutting diameter (mm) |
| Flute Length | 5.1 | Total flute length (mm) |
| Overall Length | 50.3 | Total tool length (mm) |
| Shank Diameter | 3.0 | Cylindrical shank (mm) |
| Flute Count | 2 | Two-flute design for chip evacuation |
| Grade | TA | Ultra-fine grain carbide grade |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 0.031 mm | h5 |
| Overall Length (OAL) | 50.3 mm | ±0.5 mm |
| Flute Length (LF) | 5.1 mm | ±0.3 mm |
| Shank Diameter (DCON) | 3.0 mm | h6 |
| Point Angle | 140° | ±2° |
| Helix Angle | 30° | ±1° |
| Corner Radius | 0.02 mm | ±0.01 mm |
| Core Thickness | 0.008 mm | ±0.02 mm |
| Web Thickness | 0.006 mm | ±0.015 mm |
Grade Details - Key Grade Characteristics
The TA grade utilized in the SGM07139 is an ultra-fine grain cemented carbide (WC-Co) with a homogeneous cobalt binder distribution. This grade is specifically developed for micro-drilling applications where edge sharpness and wear resistance are critical.
| Property | Value | Test Standard |
|---|---|---|
| Hardness (HV30) | 92.015625 HRA | ISO 3878 |
| Transverse Rupture Strength | 3900 MPa | ISO 3327 |
| Grain Size | 0.5 μm | ASTM E112 |
| Cobalt Content | 10 wt% | Chemical Analysis |
| Coating | TiAlN PVD Multi-layer | SEM-EDX |
| Coating Thickness | 2.5 ± 0.5 μm | Calo-test |
| Friction Coefficient | 0.35 (dry) | Pin-on-Disc |
Grade Comparison Matrix
| Grade | Hardness | Toughness | Best Application |
|---|---|---|---|
| TA | Very High | High | Micro-drilling, steel, stainless |
| TB | High | Very High | Interrupted cuts, tough materials |
| TC | Ultra High | Medium | Hardened steels >55 HRC |
| TD | High | High | General purpose, cast iron |
Chipbreaker Profile
The SGM07139 features a precision-ground two-flute geometry with an optimized chipbreaker profile designed for micro-drilling operations. The flute design incorporates a variable helix angle that promotes upward chip flow while minimizing cutting forces and burr formation.
- Flute Form: Parabolic flute profile for enhanced chip evacuation in deep-hole drilling
- Chipbreaker Width: 0.005 mm optimized for 0.031 mm diameter
- Rake Angle: 12° positive rake for reduced cutting resistance
- Clearance Angle: 8° primary clearance + 15° secondary clearance
- Margin Width: 0.002 mm for improved hole straightness and surface finish
- Edge Preparation: 0.01 mm hone (T-land) for edge strength without compromising sharpness
Recommended Applications & Workpiece Materials
| Material Group | Examples | Machinability | Recommended |
|---|---|---|---|
| P - Steel | C45, 42CrMo4, 100Cr6 | ★★★★☆ | Yes - Primary |
| M - Stainless Steel | 304, 316, 17-4PH | ★★★☆☆ | Yes - With reduced Vc |
| K - Cast Iron | GG25, GGG40 | ★★★★★ | Yes - Excellent |
| N - Non-Ferrous | Al 7075, Cu, Brass | ★★★★★ | Yes - High speed capable |
| S - Superalloys | Inconel 718, Ti-6Al-4V | ★★☆☆☆ | Limited - Low speeds |
| H - Hardened Steel | HRC 45-55 | ★★☆☆☆ | Not recommended |
Application Map by Operation
| Operation | Suitability | Max Depth | Notes |
|---|---|---|---|
| Through-hole Drilling | ★★★★★ | 3xD | Optimal chip evacuation |
| Blind-hole Drilling | ★★★★☆ | 2.5xD | Use peck cycle recommended |
| Micro-drilling | ★★★★★ | 5xD | Core competency of this series |
| Enlarging | ★★★☆☆ | 1.5xD | Pre-drill required |
| Plunge Milling | ★☆☆☆☆ | N/A | Not designed for this operation |
Recommended Cutting Conditions
| Material | Vc (m/min) | f (mm/rev) | Coolant |
|---|---|---|---|
| Low-Carbon Steel (< 0.3% C) | 85 | 0.060000000000000005 | Emulsion / MQL |
| Alloy Steel (> 0.3% C) | 75 | 0.051 | Emulsion / MQL |
| Stainless Steel (Austenitic) | 65 | 0.05 | Emulsion (high pressure) |
| Aluminum Alloys | 170 | 0.12000000000000001 | Air / MQL |
| Cast Iron (Gray) | 105 | 0.072 | Dry / Air blast |
| Titanium Alloys | 55 | 0.035 | Emulsion (flood) |
Operating Guidelines
- Runout Tolerance: Maximum tool runout should not exceed 0.005 mm (TIR) to prevent premature edge chipping and ensure hole accuracy.
- Peck Drilling: For depths exceeding 2xD, use a peck cycle with retract distance of 0.5-1xD to facilitate chip breaking and evacuation.
- Coolant Pressure: Minimum 20 bar (290 psi) for through-tool coolant; external flood coolant at 10-15 L/min for standard applications.
- Spindle Warm-up: Allow 10-15 minutes spindle warm-up at 5,000 RPM before production to ensure thermal stability.
- Entry Angle: Use a chamfer or center drill (90°) to guide the tool and prevent walk-off on inclined surfaces.
- Tool Life Monitoring: Monitor flank wear (VB) and replace when VB exceeds 0.05 mm or when burr formation increases significantly.
Toolholder Compatibility
| Holder Type | Shank Req. | Clamping | Runout |
|---|---|---|---|
| Hydraulic Chuck (HSK-E32) | 3.0 mm | Hydraulic | < 3 μm |
| Shrink Fit (HSK-E40) | 3.0 mm | Thermal | < 2 μm |
| Precision Collet (ER11-ER16) | 3.0 mm | Mechanical | < 5 μm |
| Milling Chuck | 3.0 mm | Wedge | < 8 μm |
Packaging & Ordering Information
- Packaging: Each tool is individually packed in a protective plastic tube with foam inserts to prevent edge damage during transit.
- Minimum Order Quantity: 1 piece (no minimum order for standard items).
- Bulk Packaging: Available in quantities of 10, 50, and 100 pieces with discounted pricing.
- Lead Time: Standard items ship within 24-48 hours; non-stock items within 5-7 business days.
- Storage: Store in original packaging at 15-25°C with relative humidity below 60% to prevent corrosion of the cobalt binder.
Catalog Meta Data
| Attribute | Value |
|---|---|
| Catalog Series | SGM07 Micro-Drill Series |
| Product Family | Solid Carbide Drills |
| ECCN | 1C999 |
| Country of Origin | Japan |
| Warranty | Standard Manufacturer Warranty |
| RoHS Compliance | Yes - Directive 2011/65/EU |
| REACH Compliance | Yes |
| Unit Price | $8.5 |
| HS Code | 8207.70.30 |
✓ 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.
-
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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All international payments are securely processed through PayPal, ensuring maximum transaction security and customer protection.
国際スピード郵便
✓ Full Shipment Tracking
✓ Global Logistics Network
✓ Flat Worldwide Shipping Rate: USD $50
Orders are shipped through our DHL Express corporate account from distribution facilities across Asia, Europe, and China for reliable international delivery.
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.
