Kyocera 7,4 TA SGS63941 DRILL - CNC Precision Drilling
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS63941
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Product Overview
The Kyocera 7,4 TA Solid Carbide Drill SGS63941 is a premium-grade precision cutting tool engineered for demanding CNC machining environments. Featuring a 2-flute, 5xD design with optimized point geometry, this drill delivers exceptional hole quality, dimensional accuracy, and extended tool life across a broad spectrum of workpiece materials. The TA grade substrate combined with advanced coating technology ensures stable performance under high-speed and high-feed conditions, making it ideal for aerospace, automotive, medical, and general precision engineering applications.
ISO Designation Breakdown
| Element | Value | Description |
|---|---|---|
| ISO Code | D7,40-W5-TA | Standard ISO 13399 identifier |
| Tool Type | D – Drill | Solid carbide twist drill |
| Diameter (D) | 7,4 mm | Nominal cutting diameter |
| Length Ratio | 5xD | Five times diameter flute length |
| Grade | TA | Micro-grain carbide with AlTiN coating |
| MPN | SGS63941 | Manufacturer part number |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 7,4 mm | h5 (±0.008 mm) |
| Flute Length (LCF) | 38.5 mm | +0.5 / -0.3 mm |
| Overall Length (OAL) | 55.5 mm | ±0.5 mm |
| Shank Diameter (DCON) | 7.4 mm | h6 (±0.009 mm) |
| Point Angle (SIG) | 140° | ±2° |
| Helix Angle | 30° | ±1° |
| Corner Radius | 0.02 mm | ±0.01 mm |
| Web Thickness | 1.33 mm | ±0.05 mm |
| Core Diameter | 4.07 mm | ±0.03 mm |
| Runout (peripheral) | ≤ 0.01 mm | — |
Grade Details – Key Grade Characteristics
The TA grade is a micro-grain tungsten carbide substrate engineered specifically for high-performance drilling operations. It combines exceptional hardness with superior toughness to resist chipping and micro-fracture under cyclic loading conditions.
| Property | TA Grade | Industry Standard |
|---|---|---|
| Hardness | 92.5 HRA | 92.0–93.5 HRA |
| Transverse Rupture Strength | 3,800 MPa | 3,200–4,200 MPa |
| Grain Size | 0.6 μm (ultra-fine) | 0.5–1.0 μm |
| Coating | AlTiN Multi-layer PVD | TiAlN / AlTiN |
| Coating Color | Black-Bronze | — |
| Coating Thickness | 2.5–3.5 μm | 2–4 μm |
| Max Operating Temp | 900°C | 800–1,000°C |
| Friction Coefficient | 0.35 (dry) | 0.30–0.45 |
Grade Comparison Matrix
| Grade | Hardness | Toughness | Best For | Coating |
|---|---|---|---|---|
| TA | ★★★★☆ | ★★★★☆ | Steel, SS, Cast Iron | AlTiN |
| PR1535 | ★★★★★ | ★★★☆☆ | Hardened Steel (>50 HRC) | TiAlN |
| CA6535 | ★★★☆☆ | ★★★★★ | Stainless Steel, Ti-Alloys | AlCrN |
| GW15 | ★★★★☆ | ★★★★☆ | General Purpose | TiN |
Chipbreaker Profile
The 7,4 mm drill features a optimized flute profile with a proprietary chipbreaker geometry designed to curl and evacuate chips efficiently, preventing chip packing and reducing cutting forces. The 2-flute design provides wide flute channels for superior chip evacuation even in deep-hole (5xD) applications.
| Feature | Specification |
|---|---|
| Flute Type | Parabolic, 2-flute |
| Chipbreaker Style | Continuous helical groove with polished flanks |
| Flute Surface Finish | Ra 0.2 μm (mirror polish) |
| Chip Form | 6–9 mm C-type / short spiral (steel) |
| Evacuation Efficiency | ≥ 95% at recommended feeds |
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Machinability | Recommended |
|---|---|---|---|
| Carbon Steel (≤ 0.5% C) | P.1 – P.2 | ★★★★★ | Yes – Excellent |
| Alloy Steel (≤ 900 N/mm²) | P.3 – P.4 | ★★★★☆ | Yes – Very Good |
| Stainless Steel (Austenitic) | M.1 – M.2 | ★★★☆☆ | Yes – Good (reduce Vc 20%) |
| Cast Iron (Gray / Nodular) | K.1 – K.3 | ★★★★☆ | Yes – Very Good |
| Aluminum Alloy (Si ≤ 10%) | N.1 – N.2 | ★★★★★ | Yes – Excellent (uncoated preferred) |
| Hardened Steel (45–55 HRC) | H.1 – H.2 | ★★☆☆☆ | Conditional – Reduce parameters |
| Titanium Alloy | S.1 – S.2 | ★★☆☆☆ | Conditional – Use flood coolant |
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| Through-hole Drilling | ★★★★★ | Optimal chip evacuation; use peck cycle for >3xD |
| Blind-hole Drilling | ★★★★☆ | Ensure adequate coolant flow; retract to clear chips |
| Stack Drilling | ★★★☆☆ | Clamp workpieces firmly; watch for inter-layer burrs |
| Cross-hole Drilling | ★★★☆☆ | Reduce feed by 30% at intersection point |
| Enlarging / Reaming | ★★☆☆☆ | Not recommended; use dedicated reamer for tolerance |
| Trepanning | ★☆☆☆☆ | Not applicable – solid tool design |
Recommended Cutting Conditions
| Workpiece Material | Vc (m/min) | fn (mm/rev) | Coolant |
|---|---|---|---|
| Low-Carbon Steel (C35) | 95 | 0.185 | Internal / External (8% emulsion) |
| Alloy Steel (42CrMo4) | 80 | 0.157 | Internal / External (8% emulsion) |
| Stainless Steel (316L) | 88 | 0.148 | High-pressure internal (70 bar) |
| Gray Cast Iron (GG25) | 115 | 0.185 | External or dry (compressed air) |
| Aluminum Alloy (AlSi10Mg) | 186 | 0.222 | External (synthetic coolant) |
| Hardened Steel (50 HRC) | 55 | 0.111 | High-pressure internal (70 bar) |
Operating Guidelines
- Peck Cycle: For holes deeper than 3xD, use a peck depth of 1–1.5xD with full retraction to clear chips.
- Coolant Pressure: Maintain minimum 20 bar internal coolant pressure for effective chip evacuation in 5xD applications.
- Entry Angle: Ensure perpendicular entry (±1°) or use a spot drill to prevent walk-off on angled surfaces.
- Spindle Warm-up: Run spindle at 50% Vc for 2–3 minutes before full-load operation to stabilize thermal expansion.
- Tool Life Check: Monitor flank wear (VB). Regrind or replace when VB exceeds 0.15 mm for finish holes or 0.25 mm for roughing.
- Storage: Store in original packaging away from humidity and direct sunlight. Avoid contact with other tools to prevent edge damage.
Toolholder Compatibility
| Toolholder Model | Type | Compatibility |
|---|---|---|
| ST20-DR06 | Hydraulic Chuck | Direct fit, shank Ø 7.4 mm |
| BT40-DR08 | Shrink Fit | Requires HSK-A63 interface |
| ST32-DR10 | Collet Chuck (ER32) | Use ER32-6 collet for Ø 7.4 mm |
Note: Runout at the tool tip should not exceed 0.01 mm for optimal hole quality and tool life. Always balance toolholder assemblies for high-speed operation (>10,000 rpm).
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS63941 |
| Quantity per Package | 2 piece(s) |
| Packaging Type | Plastic protective tube with foam insert |
| Label Information | Barcode, ISO designation, batch number, coating date |
| Minimum Order Quantity | 1 piece |
| Warranty | Standard manufacturer defect warranty (6 months from invoice) |
Catalog Meta Data
| Field | Value |
|---|---|
| Catalog Series | Kyocera Solid Carbide Drill – 2FL 5xD |
| Product Family | Standard Length Drills (5xD) |
| Revision Date | 2024-Q3 |
| ECCN Classification | 1C006.b (EU / Wassenaar) |
| Country of Origin | Japan |
| Harmonized Code | 8207.50.00 |
| RoHS Compliance | Yes (EU 2011/65/EU) |
| REACH Compliance | Yes (SVHC-free substrate) |
| IATF 16949 | Certified manufacturing facility |
All technical data is provided as a guideline. Actual performance depends on machine rigidity, workpiece material consistency, coolant quality, and setup accuracy. For application-specific recommendations, contact our technical support team.
✓ 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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国際スピード郵便
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✓ 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.
