Kyocera SGM PR1535 SGM08252 2FL Drill - Tool Steel
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM08252
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Product Overview
The Kyocera 0,28 DRILL 2FL SGM08252 is a premium solid carbide micro-drill engineered for high-precision CNC machining operations. With a nominal diameter of 0,28mm, this tool is specifically designed for precision automotive, aerospace components, and mold making. It features an optimized 2-flute geometry that ensures exceptional chip evacuation, superior hole quality, and extended tool life in demanding production environments.
ISO Designation Breakdown
| Element | Code | Description |
|---|---|---|
| Tool Category | D | Drill (ISO 13399) |
| Diameter | 0,28 | Nominal cutting diameter in millimeters |
| Flute Count | 2FL | Two-flute design for balanced chip evacuation |
| Series | SGM | Superior Grade Micro-drill series |
| MPN | SGM08252 | Manufacturer Part Number |
| Grade | PR1535 | Micro-grain PVD-coated carbide |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (D) | 0,28 mm | h7 (-0.012 mm) |
| Flute Length (Lf) | 1.12 mm | ±0.10 mm |
| Overall Length (L) | 50 mm | ±0.50 mm |
| Shank Diameter (Ds) | 3.0 mm | h6 |
| Point Angle | 140° | ±2° |
| Helix Angle | 30° | ±2° |
Grade Details - Key Grade Characteristics
The PR1535 grade is a micro-grain carbide substrate with advanced PVD multi-layer coating technology, specifically developed for high-precision micro-machining applications.
- Substrate: Ultra-fine 0.5μm tungsten carbide grain structure for superior edge sharpness and wear resistance
- Coating: TiAlN-based multi-layer PVD coating with enhanced hardness (HV 3,200) and oxidation resistance up to 850°C
- Edge Preparation: Micro-honed edge radius (2–3μm) for optimal edge stability without compromising sharpness
- Surface Finish: Mirror-polished flute surfaces (Ra 0.05μm) to minimize friction and prevent chip adhesion
Grade Comparison Matrix
| Grade | Coating | Hardness | Best For |
|---|---|---|---|
| PR1535 | TiAlN PVD Multi-layer | 92.5 HRA | Steel, Stainless, High-precision |
| CA6535 | Uncoated | 91.5 HRA | Aluminum, Copper, Non-ferrous |
| PR1725 | TiSiN PVD | 93.0 HRA | Hardened steel >50 HRC |
Chipbreaker Profile
The 0,28mm SGM series features an optimized point geometry and flute design specifically engineered for micro-drilling operations:
- Point Geometry: Modified split-point design with self-centering capability to reduce thrust force by up to 40%
- Flute Profile: Parabolic flute form with increased core taper for enhanced chip evacuation in deep-hole applications
- Margin Design: Dual-margin configuration with polished lands to ensure hole straightness and dimensional accuracy
- Edge Geometry: Precision-ground primary and secondary relief angles optimized for 0,28mm diameter
Recommended Applications & Workpiece Materials
| Material Group | Examples | Machinability |
|---|---|---|
| Carbon Steel | C45, C50, 1045, 1050 | ★★★★★ Excellent |
| Alloy Steel | 4140, 4340, 20CrMo | ★★★★☆ Very Good |
| Stainless Steel | 304, 316, 17-4PH | ★★★★☆ Very Good |
| Cast Iron | GG25, GGG40, FC250 | ★★★★☆ Very Good |
| Aluminum Alloy | 6061, 7075, 2024 | ★★★★★ Excellent |
Application Map by Operation
| Operation Type | Suitability | Max Depth (L/D) | Notes |
|---|---|---|---|
| Through-hole Drilling | ✓ Recommended | 4xD | Optimal chip evacuation |
| Blind-hole Drilling | ✓ Recommended | 4xD | Use peck cycle recommended |
| Micro-interpolation | △ Possible | — | Requires rigid setup |
| Enlarging | ✗ Not Recommended | — | Use dedicated reamer |
Recommended Cutting Conditions
| Workpiece Material | Cutting Speed Vc (m/min) | Feed f (mm/rev) | Coolant |
|---|---|---|---|
| Carbon Steel (<30 HRC) | 25–40 | 0.0090–0.0134 | External / MQL |
| Alloy Steel (30–45 HRC) | 20–35 | 0.0078–0.0123 | External / Through-spindle |
| Stainless Steel | 18–30 | 0.0067–0.0112 | External / Through-spindle |
| Aluminum Alloy | 50–80 | 0.0168–0.0280 | Air blast / MQL |
| Cast Iron | 30–50 | 0.0101–0.0146 | Dry / Air blast |
Operating Guidelines
- Peck Drilling: For holes deeper than 2xD, use a peck cycle with retract of 0.5–1xD to ensure proper chip evacuation and prevent breakage. Recommended peck cycle for depths >2xD
- Coolant Strategy: Through-spindle coolant (20–50 bar) recommended
- Runout Tolerance: Maintain total indicated runout (TIR) below 5μm at the tool tip for optimal tool life and hole quality
- Entry Angle: When drilling inclined surfaces, use a spot drill or center drill first, or reduce feed to 50% for the first 0.3mm
- Speed Ramp: Reduce cutting speed by 15–20% when entering cross-holes or interrupted cuts
Toolholder Compatibility
| Holder Type | Recommended Size | TIR Capability | Best For |
|---|---|---|---|
| Precision Collet Chuck | ER11 / ER16 (φ3mm) | <5μm | General precision drilling |
| Hydraulic Chuck | HSK-E32 / HSK-E40 | <3μm | High-speed micro-drilling |
| Shrink Fit Chuck | φ3mm interface | <2μm | Ultra-precision applications |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Packaging Unit | 1 piece per plastic protective tube |
| Minimum Order Quantity | 1 piece |
| Lead Time | Stock item — available for immediate dispatch |
| Warranty | Full manufacturer warranty against defects |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Series | SGM — Superior Grade Micro-drill |
| Tool Category | Solid Carbide Drill — 2 Flute |
| Manufacturer | Kyocera Corporation |
| Catalog Page | SGM Series Micro-Drills 2026 |
| Last Updated | June 2026 |
✓ 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.
