Kyocera 0,25 PR1535 SGM07744 Micro Drill - Precision CNC Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM07744
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Product Overview
The Kyocera 0,25 PR1535 SGM07744 is a precision-engineered solid carbide micro drill designed for high-performance CNC machining operations. This 0,25mm diameter 2-flute drill delivers exceptional dimensional accuracy, superior surface finish, and extended tool life in demanding production environments. Manufactured in Japan to exacting OEM standards, it is the preferred choice for aerospace, automotive, medical, and general precision engineering applications.
ISO Designation Breakdown
| ISO Code | D0.25mm-2FL-SC |
| Diameter (DC) | 0,25 mm |
| Flutes | 2 (2FL) |
| Overall Length | 31.2 mm |
| Helix Angle | 30° |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 0,25 mm | h5 |
| Point Angle | 140° | ±2° |
| Flute Length | 8.8 mm | ±0.5 mm |
| Shank Diameter | 3.0 mm | h6 |
| Corner Radius | 0.01 mm | ±0.005 mm |
Grade Details - Key Grade Characteristics
The PR1535 grade is a premium micro-grain carbide substrate with advanced PVD multi-layer coating optimized for high-speed drilling applications. Key characteristics include:
- Micro-grain carbide substrate (grain size 0.5 μm) for superior edge sharpness
- Multi-layer TiAlN coating providing exceptional heat resistance up to 900°C
- High hardness (HRA 92.5) ensuring minimal wear in continuous operations
- Optimized cobalt binder content for improved toughness and chip evacuation
- Superior chemical stability preventing built-up edge (BUE) formation
Grade Comparison Matrix
| Property | PR1535 | Standard Grade |
|---|---|---|
| Hardness (HRA) | 92.5 | 91.0 |
| Coating Type | TiAlN Multi-layer | TiN Single-layer |
| Max Cutting Temp | 900°C | 600°C |
| Tool Life Index | 1.8x | 1.0x (Baseline) |
| Application Range | Steel / Stainless / Cast Iron | Carbon Steel Only |
Chipbreaker Profile
This micro drill features an optimized 2-flute geometry with precision-ground chipbreaker grooves designed for efficient chip evacuation in deep-hole drilling. The flute design incorporates:
- Wide flute channel with polished surface (Ra 0.2 μm) to minimize chip adhesion
- Optimized helix angle of 30° ensuring smooth chip flow and reduced cutting forces
- Reinforced core diameter (40% of tool diameter) for enhanced rigidity and stability
- Precision-ground margin lands for accurate hole diameter and improved surface finish
Recommended Applications & Workpiece Materials
| Material Group | Machinability | Recommended |
|---|---|---|
| Carbon Steel (C45, C60) | Excellent | ✓ Primary |
| Alloy Steel (4140, 4340) | Very Good | ✓ Recommended |
| Stainless Steel (304, 316) | Good | ✓ Suitable |
| Cast Iron (GG25, GGG50) | Very Good | ✓ Recommended |
| Hardened Steel (45-55 HRC) | Good | ✓ Limited |
Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| Through-hole Drilling | ★★★★★ | Optimal chip evacuation |
| Blind-hole Drilling | ★★★★☆ | Peck cycle recommended |
| Micro-hole Machining | ★★★★★ | Primary application |
| High-speed Production | ★★★★★ | Stable at elevated feeds |
| CNC Center Operations | ★★★★★ | Full compatibility |
Recommended Cutting Conditions
| Parameter | Carbon Steel | Alloy Steel | Stainless Steel |
|---|---|---|---|
| Cutting Speed (Vc) | 77.5 m/min | 65.9 m/min | 54.2 m/min |
| Feed Rate (fn) | 0.0198 mm/rev | 0.0178 mm/rev | 0.0158 mm/rev |
| Spindle Speed (n) | 98676 RPM | 83874 RPM | 69073 RPM |
| Depth of Cut (ap) | 1.5 × D | 1.0 × D | 1.0 × D |
| Coolant Recommendation | External / Internal | Internal Preferred | Internal Required |
Operating Guidelines
- Always use precision collet chucks or hydraulic chucks with TIR ≤ 0.005 mm
- Ensure workpiece clamping rigidity to minimize vibration during micro-drilling
- Use peck drilling cycles (Q value: 0.5-1.0 × D) for holes deeper than 3× diameter
- Maintain coolant flow rate ≥ 5 L/min at 6-8 bar pressure for effective chip removal
- Verify spindle runout before operation; replace worn collets immediately
- Reduce feed rate by 20% when entering cross-holes or inclined surfaces
- Store tools in original packaging at 15-25°C with humidity <60% RH
Toolholder Compatibility
| Toolholder Type | Shank Dia | Compatibility |
|---|---|---|
| ER11 Collet Chuck | 3.0 mm | ✓ Direct Fit |
| ER16 Collet Chuck | 3.0 mm | ✓ With Reduction Sleeve |
| Hydraulic Chuck (HSK-E32) | 3.0 mm | ✓ Optimal for Micro-Drilling |
| Shrink Fit Holder | 3.0 mm | ✓ Excellent Rigidity |
Packaging & Ordering Information
| MPN / Order Code | SGM07744 |
| Packaging Unit | 1 Piece / Plastic Tube |
| Minimum Order Quantity | 1 |
| Gross Weight | 0.015 kg |
| Warranty | Full Manufacturer Warranty - 12 Months |
Catalog Meta Data
| Catalog Series | SGM Micro Drill Series |
| Product Family | Solid Carbide Micro Drills (2FL) |
| Manufacturer Code | KYO-SGM-2FL-0.25 |
| ECCN Classification | EAR99 |
| Harmonized Code | 8207.50.40 |
✓ 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.
