Kyocera 1/4 6FL PR1725 SGS74055 Carbide Drill - High-Speed Finishing
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS74055
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Product Overview
The Kyocera SGS74055 is a 1/4 6FL solid carbide drill featuring grade PR1725. Engineered for high-speed finishing, this tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding CNC machining environments. The optimized point geometry and advanced PVD coating ensure stable performance across a wide range of workpiece materials.
ISO Designation Breakdown
| ISO Symbol | D3.00-1FL |
| Tool Type | Solid Carbide Drill (6FL) |
| Diameter (D) | 6.35 mm (1/4") |
| Overall Length (L) | 66 mm |
| Flute Length (L1) | 22 mm |
| Shank Diameter (d) | 6.0 mm |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (D) | 6.35 mm | h6 (0/-0.008) |
| Overall Length (L) | 66 mm | ±0.5 mm |
| Flute Length (L1) | 22 mm | ±1.0 mm |
| Shank Diameter (d) | 6.0 mm | h6 |
| Point Angle | 140° | ±2° |
| Helix Angle | 40° | ±2° |
| Core Thickness | 0.4 × D | ±0.02 mm |
Grade Details - Key Grade Characteristics
Grade PR1725 is a premium carbide substrate paired with an advanced PVD coating, specifically developed for high-performance drilling operations.
| Property | Specification |
|---|---|
| Carbide Substrate | Fine WC-Co with TaC |
| Coating Type | AlCrN High-performance |
| Hardness | 93.5 HRA |
| Transverse Rupture Strength | 3,800 MPa |
| Coating Color | Silver-Gray |
| Max Operating Temp | 1,100°C |
Grade Comparison Matrix
| Grade | Coating | Best For | Speed vs Wear |
|---|---|---|---|
| PR1535 | TiAlN PVD | Steel, Cast Iron | Balanced |
| CA6535 | TiAlSiN Nano | Stainless, Titanium | High Speed |
| PR1725 | AlCrN | Hardened Steel | Maximum Wear |
Chipbreaker Profile
High-helix (40°) design with polished flutes and reinforced core (0.4D) for stability
Recommended Applications & Workpiece Materials
- Steel & Alloy Steel (P1.1–P2.5): Excellent chip control and tool life at high cutting speeds.
- Stainless Steel (M1.0–M2.0): Polished flutes reduce built-up edge and improve surface finish.
- Cast Iron (K1.0–K3.0): Strong cutting edge withstands interrupted cuts and abrasive conditions.
- Titanium & Superalloys (S1.0–S2.0): Optimized for low thermal conductivity materials with reduced heat generation.
- Hardened Steel (H1.0–H2.0): Capable of drilling up to 50 HRC with appropriate parameters.
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| Through-Hole Drilling | ★★★★★ | Optimal chip evacuation with internal coolant |
| Blind-Hole Drilling | ★★★★☆ | Reduce feed by 20% near bottom |
| Peck Drilling | ★★★★★ | Recommended for depths >3×D |
| Helical Interpolation | ★★★☆☆ | Use reduced radial engagement |
| Micro-Drilling | ★★★☆☆ | Stable setup and high RPM required |
Recommended Cutting Conditions
| Material Group | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap |
|---|---|---|---|
| Low-Carbon Steel (P1.1) | 90-130 | 0.08-0.18 | 1.5-3.0D |
| Alloy Steel (P2.0) | 80-120 | 0.08-0.18 | 1.5-3.0D |
| Stainless Steel (M1.0) | 70-110 | 0.06-0.14 | 1.5-3.0D |
| Cast Iron (K1.0) | 100-140 | 0.08-0.18 | 1.5-3.0D |
| Titanium (S1.0) | 60-100 | 0.05-0.11 | 1.0-2.0D |
Operating Guidelines
- Always use high-pressure internal coolant (minimum 70 bar) for depths exceeding 3×D.
- Ensure runout is less than 0.01 mm (TIR) to maximize tool life and hole accuracy.
- Use rigid toolholding (hydraulic or shrink-fit) for optimal performance.
- Reduce cutting speed by 15% when drilling stacked or exit-side chamfered plates.
- For peck cycles, retract to 1×D above the bottom of the previous peck to minimize cycle time.
- Monitor spindle load; sudden spikes indicate chip packing or edge wear.
Toolholder Compatibility
This 1/4 drill is compatible with the following standard toolholder interfaces:
| Taper Type | Collet / Chuck Size | Min Taper Size |
|---|---|---|
| HSK | ER16 / ER20 / ER32 | HSK32E (small) to HSK100A (large) |
| BT / DIN | ER16 / ER20 / ER32 / ER40 | BT30 (small) to BT50 (large) |
| CAT / ANSI | ER32 / ER40 / ER50 | CAT40 (medium) to CAT50 (large) |
Recommended holders for this size: HSK50A, BT30-ER20, BT40-ER25
Packaging & Ordering Information
- Standard Packaging: Individual plastic tube with protective foam insert.
- Minimum Order Quantity: 1 piece (no MOQ for standard items).
- Bulk Packaging: Available in boxes of 10 pieces with labeled dividers.
- Lead Time: Stock items ship within 24 hours; non-stock items typically 2–3 weeks.
- Custom Configurations: Special lengths, coatings, and edge preparations available on request (MOQ applies).
Catalog Meta Data
| Field | Value |
|---|---|
| Manufacturer Part Number | SGS74055 |
| Series | SGS74000 Solid Carbide Drill |
| Grade | PR1725 |
| Flute Count | 6FL |
| Nominal Diameter | 1/4 inch (6.35 mm) |
| Overall Length | 66 mm |
| Coating | AlCrN High-performance |
| Point Geometry | 140° Self-centering split point |
| Coolant Type | Internal coolant (axial) recommended |
| Country of Manufacture | Japan |
✓ 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.
安全な決済方法
✓ Encrypted Transactions
✓ Global Buyer Protection
✓ Safe International Payments
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.
