Kyocera 2,12 PR1535 SGM07959 DRILL 2FL - Steel Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM07959
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Product Overview
The Kyocera 2,12 DRILL 2FL SGM07959 is a precision-engineered solid carbide micro-drill featuring PR1535 substrate technology. Designed for CNC machining centers and Swiss-type lathes, this 2.12 mm diameter tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding production environments. The optimized 2-flute geometry ensures efficient chip evacuation and minimizes cutting forces, making it ideal for steel machining applications.
ISO Designation Breakdown
| ISO Code | D2,12x7.42L18.02 |
| Tool Type | Solid Carbide Drill – 2 Flutes |
| Nominal Diameter (D) | 2.12 mm |
| Flute Length (Lf) | 7.42 mm |
| Overall Length (L) | 18.02 mm |
| Shank Diameter (Ds) | 2.12 mm |
| Grade | PR1535 |
| MPN | SGM07959 |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Point Angle | 140° | ±1° |
| Helix Angle | 30° | ±2° |
| Core Thickness | 0.466 mm | h9 |
| Margin Width | 0.254 mm | ±0.02 |
| Web Thinning | S-type | Standard |
| Corner Radius | 0.02 mm | ±0.005 |
Grade Details – Key Grade Characteristics
The PR1535 grade is engineered with a AlTiN multi-layer PVD coating deposited via advanced arc-evaporation technology. This substrate/coating combination delivers:
- Coating Hardness: HRC 35-50 – ideal for steel machining
- Oxidation Resistance: Up to 953°C, ensuring thermal stability in dry machining
- Coating Color: Dark Copper – visual identification for quick grade verification
- Adhesion Strength: Excellent bonding to ultra-fine carbide substrate (0.5 μm grain size)
- Friction Coefficient: 0.38 – reduced built-up edge formation
Grade Comparison Matrix
| Grade | Coating | Hardness Range | Best For |
|---|---|---|---|
| PR1535 | AlTiN | HRC 35-50 | Steel & Stainless Steel |
| PR1725 | TiAlN | HRC 45-55 | Hardened Steel |
| PR1225 | TiCN | HRC 30-45 | General Purpose |
| PR1525 | AlCrN | HRC 25-40 | Carbon Steel |
| PR1055 | TiN | HRC 20-35 | Cast Iron |
Chipbreaker Profile
The 2,12 features a precision-ground S-type chipbreaker with a 0.17 mm land width and 12.2° rake angle. This profile is optimized for 2.12 mm diameter holes and provides:
- Controlled chip curling for short, manageable chips in blind-hole drilling
- Reduced cutting force by 19% compared to conventional flat drills
- Enhanced edge stability for interrupted cuts and cross-hole drilling
- Smooth chip evacuation through 30° helical flutes with polished surface finish (Ra 0.2 μm)
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Machinability | Recommended |
|---|---|---|---|
| Carbon Steel | P.1 / P.2 | ★★★★★ | ✓ Yes |
| Alloy Steel | P.3 / P.4 | ★★★★☆ | ✓ Yes |
| Stainless Steel | M.1 / M.2 | ★★★☆☆ | ✓ Yes |
| Cast Iron | K.1 / K.2 | ★★★★★ | △ Limited |
| Hardened Steel (>45 HRC) | H.1 | ★★☆☆☆ | ✗ No |
| Aluminum | N.1 / N.2 | ★★★★★ | △ Limited |
Application Map by Operation
| Operation | Suitability | Max Depth | Notes |
|---|---|---|---|
| Through-hole Drilling | ★★★★★ | 3×D | Excellent chip evacuation |
| Blind-hole Drilling | ★★★★☆ | 2.5×D | Use peck cycle for >2×D |
| Spot Drilling | ★★★★★ | 0.5×D | Self-centering 140° point |
| Cross-hole Drilling | ★★★☆☆ | 1.5×D | Reduce feed by 20% |
| Micro Drilling | ★★★★★ | 2×D | Optimized for 2.12 mm |
Recommended Cutting Conditions
| Material | vc (m/min) | f (mm/rev) | RPM (approx.) |
|---|---|---|---|
| Carbon Steel | 40-80 | 0.0318-0.0742 | 6005-12011 |
| Alloy Steel | 35-70 | 0.0286-0.0668 | 5255-10510 |
| Stainless Steel | 30-65 | 0.0254-0.0594 | 4504-9759 |
| Cast Iron | 50-95 | 0.035-0.0816 | 7507-14263 |
Note: Values are starting recommendations. Adjust based on machine rigidity, coolant delivery, and workpiece setup. For depths exceeding 2×D, use a peck drilling cycle with 0.3×D peck depth.
Operating Guidelines
- Coolant: High-pressure internal coolant (minimum 20 bar) is strongly recommended for holes deeper than 1.5×D. Use water-miscible cutting fluid with 8-10% concentration.
- Run-out: Maintain total indicated run-out (TIR) below 0.01 mm at the tool tip. Excessive run-out reduces tool life by up to 40%.
- Peck Cycle: For blind holes >2×D, employ a peck depth of 0.2–0.3×D with a 20% feed reduction on re-entry.
- Entry Angle: When drilling inclined surfaces, ensure the entry angle does not exceed 5° from perpendicular without spot-facing first.
- Tool Life Monitoring: Replace the drill when flank wear (VB) reaches 0.08 mm or when burr formation on the hole exit increases significantly.
- Storage: Store in original packaging at 15-25°C with <60% relative humidity to prevent coating degradation.
Toolholder Compatibility
| Holder Type | Compatible | Clamping Force | Notes |
|---|---|---|---|
| Hydraulic Chuck (HSK-E) | ✓ | High | Best for <3 mm drills |
| Shrink Fit (HSK-A) | ✓ | Very High | Excellent run-out control |
| Collet Chuck (ER11/ER16) | ✓ | Medium | Use precision collets (AA grade) |
| Weldon Shank | ✗ | N/A | Not applicable for micro-drills |
Packaging & Ordering Information
| Manufacturer Part Number | SGM07959 |
| Packaging Type | Individual plastic tube with protective foam insert |
| Quantity per Package | 1 piece |
| Minimum Order Quantity | 1 |
| Warranty | Full manufacturer warranty against material and manufacturing defects |
| Certifications | ISO 9001:2015, ISO 14001:2015 |
Catalog Meta Data
| Catalog Series | SGM Series – Solid Carbide Micro Drills |
| Product Family | 2-Flute Standard Length Drills |
| Last Catalog Update | 2026-Q2 |
| Replacement For | N/A – Current generation |
| Cross-Reference | Compatible with DIN 6537 standard dimensions |
| Technical Support | Application engineering support available via Kyotow.com |
Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools with full manufacturer warranty. Every product is verified for authenticity and backed by expert CNC tooling application support. Bulk pricing and institutional orders are welcome.
✓ 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.
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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
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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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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.
