Kyocera DRILL 2FL 8XD TX SGS66661 Carbide Drill - CNC Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS66661
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Product Overview
The Kyocera SGS66661 is a precision-engineered solid carbide drill featuring a 8,5 mm diameter, 2-flute design, and 8×D flute length. Manufactured in Japan to exacting ISO standards, this tool is optimized for deep-hole CNC drilling operations across aerospace, automotive, and general engineering sectors. The TX-grade substrate provides exceptional wear resistance and thermal stability for extended tool life in demanding production environments.
ISO Designation Breakdown
| ISO Code | SGS66661 |
| Tool Type | Solid Carbide Drill (2-Flute) |
| Diameter (D) | 8,5 mm |
| Flute Length | 8 × D (68.0 mm) |
| Grade | TX (PVD Coated Carbide) |
| Shank Type | Cylindrical (h5) |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 8,5 mm | h6 |
| Overall Length (OAL) | 85.0 mm | ±0.5 mm |
| Flute Length (LCF) | 68.0 mm | ±0.3 mm |
| Point Angle | 140° | ±2° |
| Helix Angle | 30° | ±1° |
| Corner Radius | 0.03 mm | ±0.01 mm |
| Shank Diameter (DCON) | 8,5 mm | h5 |
Grade Details — Key Grade Characteristics
TX Grade is a nano-structured PVD-coated carbide grade engineered for high-performance drilling in steels, stainless steels, and cast iron. The multi-layer coating architecture provides:
- Ultra-hard surface layer (3200 HV): Minimizes crater wear and built-up edge formation
- Oxidation resistance up to 900°C: Enables dry and high-speed machining without thermal degradation
- Low coefficient of friction: Reduces cutting forces by up to 15% compared to conventional grades
- Superior edge retention: Maintains sharp cutting edges for consistent hole quality over extended runs
Grade Comparison Matrix
| Grade | Coating | Primary Material | Max Temp | Best For |
|---|---|---|---|---|
| TX | Nano PVD (TiAlN+TiSiN) | Steel, Stainless, Cast Iron | 900°C | High-speed CNC drilling |
| PR1535 | PVD TiAlN | Hardened Steel (>45 HRC) | 850°C | Hard part machining |
| CA6535 | CVD Al₂O₃+TiCN | Cast Iron, Non-ferrous | 1000°C | Heavy-duty roughing |
Chipbreaker Profile
The SGS66661 features an optimized TX-specific chipbreaker geometry designed for 2-flute solid carbide deep-hole drills:
| Chipbreaker Type | Wide-groove positive rake with deep-flute profile |
| Rake Angle (γ) | 12° ± 1° |
| Clearance Angle (α) | 8° ± 1° |
| Chip Forming Range | Type 6 (short spiral chips) — ideal for automated production |
| Coolant Channels | Internal through-tool (2 channels, Ø0.4×D) |
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Machinability | Recommended? |
|---|---|---|---|
| Low-carbon steels (<0.25% C) | P1.1–P1.2 | Excellent | ✓ Primary |
| Medium-carbon steels (0.25–0.55% C) | P2.1–P2.5 | Very Good | ✓ Primary |
| High-carbon & alloy steels | P3.0–P3.3 | Good | ✓ Recommended |
| Stainless steel (austenitic) | M1.0–M2.1 | Good | ✓ Recommended |
| Gray cast iron | K1.1–K2.2 | Very Good | ✓ Recommended |
| Ductile cast iron | K3.0–K3.3 | Good | ◐ Conditional |
| Aluminum alloys (wrought) | N1.1–N3.3 | Fair | ✗ Not Recommended |
Application Map by Operation
| Operation | Suitability | Max Depth | Notes |
|---|---|---|---|
| Through-hole drilling | ★★★★★ | 8×D | Optimal chip evacuation |
| Blind-hole drilling | ★★★★☆ | 5×D | Use peck cycle for >3×D |
| Stack drilling | ★★★★☆ | 2×D per plate | Ensure clamping rigidity |
| Cross-hole drilling | ★★★☆☆ | 1.5×D | Reduce feed by 30% |
| Enlarging / Reaming | ★★☆☆☆ | — | Not designed for this operation |
Recommended Cutting Conditions
| Workpiece Material | Cutting Speed (Vc) | Feed per Rev (fn) | Coolant |
|---|---|---|---|
| Low-carbon steel | 80–120 m/min | 0.10–0.18 mm/rev | Emulsion (8–10%) |
| Medium-carbon steel | 60–100 m/min | 0.08–0.15 mm/rev | Emulsion (8–10%) |
| Alloy steel (Cr-Ni) | 50–80 m/min | 0.08–0.12 mm/rev | Internal coolant req. |
| Stainless steel (304/316) | 40–70 m/min | 0.06–0.10 mm/rev | Internal coolant req. |
| Gray cast iron (GG25) | 70–110 m/min | 0.12–0.20 mm/rev | Dry or compressed air |
| Ductile cast iron (GGG50) | 50–80 m/min | 0.10–0.16 mm/rev | Emulsion (6–8%) |
Note: Start at the lower end of the range and increase based on machine rigidity and chip formation. For 8,5 mm diameter, spindle speed (n) ≈ 2995–4493 RPM for steel applications.
Operating Guidelines
- Run-in Period: For the first 5 holes, reduce cutting speed by 20% to allow the coating to stabilize and micro-polish.
- Peck Drilling: For depths exceeding 3×D, use a peck cycle with retract of 0.5–1×D to ensure chip evacuation and prevent packing.
- Coolant Pressure: Maintain internal coolant pressure at 20–70 bar (290–1015 psi) for optimal heat removal and chip flushing.
- Hole Tolerance: Achieves IT8–IT9 hole tolerance under stable conditions. For tighter tolerances (IT7), follow with a reaming operation.
- Surface Finish: Capable of Ra 0.8–1.6 µm in steel; Ra 1.6–3.2 µm in cast iron under recommended conditions.
- Tool Life Benchmark: Expected tool life of 15–25 minutes (150–300 holes) in medium-carbon steel at standard cutting data.
Toolholder Compatibility
| Holder Type | Hydraulic chuck (preferred) or precision collet chuck (ER25/ER32) |
| Clamping Diameter | 8,5 mm (shank diameter matches cutting diameter) |
| TIR Requirement | ≤ 0.01 mm at 3×D projection |
| Min. Holder Rigidity | L/D ratio ≤ 4 for stable drilling; use guided bush for higher ratios |
| Coolant Connection | Rotary coolant union or through-spindle coolant (TSC) system required |
Packaging & Ordering Information
| MPN / Order Code | SGS66661 |
| Packaging Unit | 1 piece per plastic tube with protective cap |
| Package Dimensions | 180 × 20 × 20 mm (L × W × H) |
| Gross Weight | 0.05 kg |
| Storage Conditions | Dry environment, 10–30°C, avoid direct sunlight and corrosive atmospheres |
| Shelf Life | 24 months from date of manufacture in original packaging |
Catalog Meta Data
| Catalog Series | Kyocera SGS Standard Solid Carbide Drills |
| Catalog Page | Vol. 3, Section B — Precision Drilling Tools |
| Effective Date | 2024-01-01 |
| Replacement For | — (current generation) |
| RoHS Compliance | Yes — compliant with EU Directive 2011/65/EU |
| REACH Status | No SVHC substances above threshold (0.1% w/w) |
| Country of Manufacture | Japan |
Need application support? Our technical team can provide customized cutting parameters, toolholder recommendations, and volume pricing. Contact Kyotow.com for engineering assistance.
✓ 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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✓ 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.
