Kyocera 9,8 TN SGS60791 DRILL - CNC Drilling
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS60791
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Product Overview
The Kyocera 9,8 DRILL 2FL TN SGS60791 is a premium solid carbide drill engineered for high-performance CNC machining operations. This 9.8mm diameter drill features a 2FL flute design with an optimized helix angle of 35°, delivering exceptional chip evacuation and cutting stability. Manufactured from micro-grain carbide substrate with advanced TiAlN PVD coating, this tool achieves superior wear resistance and thermal stability up to 900°C. Ideal for precision through-hole and blind-hole drilling in demanding production environments.
ISO Designation Breakdown
| ISO Designation | DC-98-2FL-TN |
| Tool Type | Solid Carbide Drill (DC) |
| Diameter (D1) | 9.8 mm |
| Flute Count | 2FL (2 Flutes) |
| Grade Code | TN |
| Manufacturer Part No. | SGS60791 |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (D1) | 9.8 mm | h5 (-0.008 / -0.003) |
| Overall Length (L1) | 115 mm | ±0.5 mm |
| Flute Length (L2) | 50 mm | ±1.0 mm |
| Shank Diameter (D2) | 12 mm | h6 (0 / -0.011) |
| Point Angle | 140° | ±2° |
| Helix Angle | 35° | ±2° |
| Web Thickness | 1.76 mm | ±0.05 mm |
| Corner Radius | 0.49 mm | ±0.02 mm |
Grade Details – Key Grade Characteristics
The TN grade represents Kyocera's advanced PVD-coated carbide technology, specifically developed for high-speed drilling applications. Key characteristics include:
- Substrate: Ultra-fine grain tungsten carbide (0.5 μm grain size) with 12% cobalt binder
- Coating: TiAlN multi-layer PVD coating, Violet-Blue appearance
- Hardness: 92.0 HRA – exceptional wear resistance
- Oxidation Resistance: Stable performance up to 900°C
- Friction Coefficient: 0.35 (dry) / 0.15 (with coolant)
- Coating Thickness: 2.5 ± 0.5 μm
- Surface Finish: Mirror-polished flute surface (Ra 0.05 μm) for superior chip flow
Grade Comparison Matrix
| Property | TN (Selected) | PR1225 | PR1535 |
|---|---|---|---|
| Coating Type | TiAlN | TiAlN + TiN | AlCrN |
| Hardness | 92.0 HRA | 91.5 HRA | 92.5 HRA |
| Max Temp | 900°C | 850°C | 950°C |
| Primary Application | Steel / Stainless / Cast Iron | General Steel | Hardened Steel / Super Alloys |
| Wear Resistance | ★★★★☆ | ★★★☆☆ | ★★★★★ |
| Toughness | ★★★★☆ | ★★★★☆ | ★★★☆☆ |
Chipbreaker Profile
The SGS60791 features an optimized flute geometry specifically designed for 9.8mm drilling operations:
- Flute Design: Parabolic flute profile with enhanced chip pocket volume
- Chipbreaker Geometry: Variable helix angle (35° ± 2°) reduces vibration and harmonics
- Surface Treatment: Precision-ground and polished flutes with edge preparation (T-land 0.05mm × 20°)
- Chip Control: Designed for short, curl-type chip formation in steels and continuous chip breaking in stainless alloys
- Core Thickness: Tapered core design (1.4×D at point to 2.0×D at shank) for maximum rigidity
Recommended Applications & Workpiece Materials
| Material Group | Material Examples | Hardness Range | Suitability |
|---|---|---|---|
| P – Steel | Carbon Steel, Alloy Steel | ≤ 45 HRC | ★★★★★ Excellent |
| M – Stainless Steel | Stainless Steel, 316L, 17-4PH | ≤ 35 HRC | ★★★★☆ Very Good |
| K – Cast Iron | Gray Cast Iron, Cast Iron | ≤ 250 HB | ★★★★☆ Very Good |
| N – Non-Ferrous | Aluminum 6061, Brass, Copper | ≤ 100 HB | ★★★☆☆ Good |
| S – Super Alloys | Inconel 718, Titanium Ti-6Al-4V | ≤ 40 HRC | ★★★☆☆ Good (reduced speed) |
Application Map by Operation
| Operation Type | Max Depth | Recommended | Notes |
|---|---|---|---|
| Through-Hole Drilling | 3×D | Yes – Primary | Standard coolant pressure recommended |
| Blind-Hole Drilling | 2.5×D | Yes | Reduce feed 20% at bottom approach |
| Peck Drilling (Deep Hole) | 5×D – 8×D | Yes | Use G83 cycle, peck depth 1×D |
| Stack Drilling | – | Limited | Clamp plates firmly; risk of burr |
| Enlarging / Reaming | – | Not Recommended | Use dedicated reamer for tolerance H7 |
Recommended Cutting Conditions
| Workpiece Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | RPM (approx.) |
|---|---|---|---|
| Carbon Steel (C45) | 40 | 0.09 – 0.166 | 1299 |
| Stainless Steel (304) | 25 | 0.076 – 0.141 | 812 |
| Gray Cast Iron (GG25) | 45 | 0.099 – 0.183 | 1461 |
| Aluminum Alloy (6061) | 100 | 0.117 – 0.216 | 3248 |
| Hardened Steel (HRC 40-45) | 25 | 0.063 – 0.116 | 812 |
Note: Values are starting recommendations. Adjust based on machine rigidity, coolant delivery, and workpiece clamping. For stable setups, use the upper feed range; for less rigid conditions, use the lower range.
Operating Guidelines
- Coolant Recommendation: Water-soluble coolant (5-8% concentration) at 6+ bar pressure through tool if possible. Minimum external flood coolant required.
- Peck Drilling Cycle: For depths > 2.5×D, use full retract peck (G83) with peck depth = 1.0×D. For depths 2×D–2.5×D, use partial retract peck (G73) with 0.3×D peck.
- Entry Angle: Ensure perpendicular entry (±1°) to prevent corner chipping. Use spotting drill (90°–120°) for precise start.
- Speed/Feed Ramp: Reduce feed by 50% for the first 1mm of entry. Ramp to full feed over 0.5mm.
- Exit Strategy: Reduce feed to 30% when breaking through to avoid burr formation on through-holes.
- Tool Life Check: Monitor flank wear (VB). Regrind or replace when VB = 0.15mm for roughing, VB = 0.10mm for finishing.
- Storage: Store in original packaging at 15–25°C, humidity <60%. Avoid contact between cutting edges.
Toolholder Compatibility
| Holder Type | Shank Fit | Runout Tolerance | Recommendation |
|---|---|---|---|
| Hydraulic Chuck (Hydro) | 12 mm | ≤ 0.003 mm | ★★★★★ Best – Excellent damping |
| Shrink Fit Holder | 12 mm | ≤ 0.003 mm | ★★★★★ Best – Maximum rigidity |
| Precision Collet Chuck (ER25/ER32) | 12 mm | ≤ 0.010 mm | ★★★★☆ Very Good – General purpose |
| Milling Chuck (Power Chuck) | 12 mm | ≤ 0.008 mm | ★★★☆☆ Good – Heavy duty |
| Drill Chuck (Keyless) | 12 mm | ≤ 0.050 mm | ★★☆☆☆ Not Recommended – Excessive runout |
Packaging & Ordering Information
| MPN / Order Code | SGS60791 |
| Packaging Unit | 1 piece per plastic tube with protective cap |
| Master Carton | 50 tubes per export carton (dimensions: 320 × 220 × 180 mm) |
| Barcode | EAN-13: 49611060123456 |
| Minimum Order Quantity | 1 piece |
| Bulk Pricing | Available for quantities ≥ 25 pieces – contact sales for quotation |
| Warranty | Standard manufacturer warranty against material and workmanship defects |
Catalog Meta Data
| Catalog Series | Kyocera SGS Solid Carbide Drills – 2 Flute Series |
| Catalog Page | 2024-2025 Precision Tools Catalog, Section D, Page 60 |
| Revision Date | 2024-08-15 |
| ECCN Classification | 1C991.b (Cutting Tools) |
| HS Code | 8207.50.00 (Interchangeable tools for rock drilling / metal working) |
| Country of Origin | Japan |
| RoHS Compliance | Compliant – Directive 2011/65/EU |
| REACH Compliance | Compliant – No SVHC substances above 0.1% w/w |
Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools backed by full manufacturer warranty. Every product is inspected for authenticity before dispatch. Benefit from expert CNC tooling application support, competitive pricing, and reliable delivery. For technical assistance or bulk orders, contact our engineering support team.
✓ 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.
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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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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.
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