Kyocera 2.85mm SGM SGM08403 2FL DRILL - CNC Precision
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM08403
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Product Overview
The Kyocera 2.85mm 2FL DRILL (SGM08403) is a precision-engineered solid carbide drilling tool from the SGM micro-drill series. This standard series variant is manufactured to exacting standards in Japan and delivers exceptional hole quality, dimensional accuracy, and surface integrity for general-purpose precision drilling in steels, stainless steels, and cast irons. The 2.85mm nominal diameter combined with uncoated substrate ensures reliable performance in high-volume CNC production environments.
ISO Designation Breakdown
| Designation Element | Code / Value | Description |
|---|---|---|
| Tool Category | D2.85 | Solid carbide drill, 2.85mm nominal diameter per ISO 13399 |
| Flute Configuration | 2FL | Two-flute design for optimal chip evacuation and hole straightness |
| Series / Grade | SGM | Kyocera micro-drill series, micro-grain carbide substrate |
| Size Class | S | Small-range (≤3.0mm) diameter classification |
| Full Product Code | SGM08403 | Kyocera factory order code and traceability identifier |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance / Note |
|---|---|---|
| Nominal Diameter (D) | 2.85mm | h5 (ISO 286) |
| Flute Length (Lf) | 9.8 mm | ±0.10 mm |
| Overall Length (Lo) | 37.2 mm | ±0.20 mm |
| Shank Diameter (Ds) | 6.2 mm | h6 cylindrical shank |
| Point Angle (σ) | 130° | Split-point, self-centering |
| Helix Angle (λ) | 30° | Constant helix for stable chip flow |
| Core Thickness Ratio | 0.24×D | Reinforced core for stability |
| Web Thinning | Standard | Reduces thrust force by 15–20% |
Grade Details – Key Grade Characteristics
| Property | Specification |
|---|---|
| Substrate Material | Micro-grain tungsten carbide (WC-Co), 0.8 μm average grain size |
| Coating System | Uncoated Micro-Grain Carbide |
| Hardness | 92.0 HRA |
| Transverse Rupture Strength (TRS) | 3,800 MPa |
| Coef. of Thermal Expansion | 4.5 × 10⁻⁶ /°C (20–400°C) |
| Thermal Conductivity | 84 W/m·K |
| Oxidation Resistance | Good up to 500°C |
Grade Comparison Matrix
| Grade | Coating | Hardness | Best For | Max Temp |
|---|---|---|---|---|
| SGM (This Product) | Uncoated | 92.0 HRA | Micro-drilling, short-hole | 500°C |
| PR1535 | TiAlN PVD | 91.5 HRA | General milling & drilling | 750°C |
| CA6535 | CVD TiCN+Al₂O₃ | 92.0 HRA | High-speed steel turning | 900°C |
| GW15 | Diamond Coating | 91.0 HRA | Non-ferrous & composites | 700°C |
Chipbreaker Profile & Point Geometry
Standard 130° split-point geometry with parabolic flute profile optimized for balanced chip evacuation and reduced thrust forces in short-hole applications.
| Geometric Feature | Specification |
|---|---|
| Point Geometry | Standard split-point with web thinning (N-type) |
| Flute Profile | Parabolic, constant helix |
| Margin Width | 0.108 mm per margin |
| Back Taper | 0.0109 mm/mm |
| Corner Preparation | Sharp edge (no prep) |
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Suitability | Notes |
|---|---|---|---|
| Steel (≤45 HRC) | P.1 | ★★★★★ | Excellent chip control and tool life in low-to-medium carbon steels. |
| Stainless Steel (304/316) | M.1 | ★★★★☆ | Good balance of wear resistance and edge strength for austenitic grades. |
| Cast Iron | K.1 | ★★★☆☆ | Stable performance in gray and nodular cast irons; dry machining recommended. |
| Aluminum Alloys | N.1 | ★★★★☆ | High-speed capable with polished flutes to prevent built-up edge. |
Application Map by Operation
| Operation | Suitable | Guidance |
|---|---|---|
| Through-Hole Drilling | ✓ Recommended | Primary application; use peck cycle for depths >3×D |
| Blind-Hole Drilling | ✓ Recommended | Ensure adequate chip evacuation with compressed air or MQL |
| Countersinking | △ Limited | Possible at reduced feed; not designed for large chamfers |
| Enlarging / Reaming | ✗ Not Recommended | Use dedicated reamer for tolerance IT7 and better |
| Trepanning | ✗ Not Recommended | Insufficient core strength for core retention |
Recommended Cutting Conditions
| Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap |
|---|---|---|---|
| Low-Carbon Steel (C<0.3%) | 40 – 60 | 0.05 – 0.12 | 1.0 – 2.5×D (up to 7.12mm) |
| Medium-Carbon Steel (0.3–0.6%) | 35 – 55 | 0.05 – 0.12 | 1.0 – 2.5×D (up to 7.12mm) |
| Stainless Steel (AISI 304) | 30 – 50 | 0.03 – 0.08 | 1.0 – 2.0×D |
| Cast Iron (GG25) | 45 – 65 | 0.08 – 0.15 | 2.0 – 3.0×D |
Note: Values are starting recommendations. Optimize based on machine rigidity, coolant delivery, and workpiece fixturing.
Operating Guidelines
- Run-out: Maintain TIR ≤0.01 mm at the tool tip to prevent premature corner wear and hole enlargement.
- Coolant: External flood coolant at 6–8% emulsion concentration is sufficient for short holes. For deep holes, use through-spindle coolant (min. 30 bar).
- Peck Cycle: Use 1×D peck depth for depths up to 3×D; 0.5×D for 3–5×D.
- Entry Angle: Drill perpendicular to surface (90° ±1°). For inclined entry, use spot drilling or chamfering first.
- Speed / Feed Ramp: Reduce Vc by 20% and increase feed gradually over the first 5 mm to stabilize cutting forces.
- Tool Life Check: Monitor flank wear (VB). Resharpen or replace when VB ≥0.05 mm for precision applications.
Toolholder Compatibility
| Holder Type | Compatible | Recommendation |
|---|---|---|
| ER Collet Chuck (ER16 / ER20 / ER25) | ✓ Yes | Use AA-precision collet for best run-out control |
| Hydraulic Chuck | ✓ Yes | Recommended for high-speed applications; damping improves surface finish |
| Shrink-Fit Chuck | ✓ Yes | Excellent rigidity and torque transmission for demanding cuts |
| Weldon Flat Holder | ✗ No | Cylindrical shank without Weldon flat; use side-lock only with brass shim |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Factory Order Code | SGM08403 |
| Packaging Type | Individual plastic tube, 1 piece per pack |
| Minimum Order Quantity | 1 piece(s) |
| Shelf Life (Unopened) | 36 months from date of manufacture when stored in original packaging at 20±5°C, ≤60% RH |
| Traceability | Laser-marked MPN on shank; batch number on packaging label |
Catalog Meta Data
| Field | Value |
|---|---|
| Catalog Number | SGM-2026-85 |
| Catalog Revision | Rev. 2026-A |
| ECCN Classification | 1C006.b (EU Dual-Use List) |
| Country of Manufacture | Japan |
| HS Code | 8207.50.00 |
| Warranty | 12 months against manufacturing defects when used per recommended parameters |
✓ 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
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All international payments are securely processed through PayPal, ensuring maximum transaction security and customer protection.
国際スピード郵便
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✓ 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.
