Kyocera 2,3 PR1535 SGM07981 DRILL 2FL - Steel Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM07981
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Product Overview
The Kyocera 2,3mm DRILL 2FL SGM07981 is a premium solid-carbide micro-drill engineered for high-precision hole-making in ferrous and non-ferrous alloys. Featuring a PR1535 PVD-coated substrate, this two-flute design delivers exceptional dimensional accuracy, superior surface finish, and extended tool life in demanding CNC production environments. Ideal for through-hole and blind-hole applications in steel, stainless steel, and cast iron.
ISO Designation Breakdown
| Element | Code / Value | Meaning |
|---|---|---|
| Series Prefix | SGM | Solid Carbide Micro-Drill Series |
| Catalog Number | 07981 | Diameter-specific identifier |
| Flute Count | 2FL | Two-flute geometry for chip evacuation |
| ISO Standard | ISO 5414 | Solid carbide twist drill conformity |
| Grade Class | PR1535 | PVD-coated fine-grain carbide |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Drill Diameter (D1) | 2,3 mm | h5 (-0.004 / -0.009) |
| Overall Length (L1) | 45.1 mm | ±0.5 mm |
| Flute Length (L2) | 12.1 mm | ±0.3 mm |
| Shank Diameter (D2) | 2,3 mm | h6 |
| Point Angle | 140° | ±2° |
| Helix Angle | 30° | ±1° |
| Core Thickness | 0.51 mm | ±0.02 mm |
| Web Thickness | 0.41 mm | ±0.015 mm |
Grade Details – Key Grade Characteristics
The PR1535 grade is a fine-grain tungsten-carbide substrate with a multi-layer PVD coating optimized for high-speed drilling in steels and stainless steels.
| Property | PR1535 Value | Industry Benchmark |
|---|---|---|
| Hardness (HV30) | 1,650 | 1,550 – 1,700 |
| Transverse Rupture Strength | 3,800 MPa | 3,500 – 4,000 MPa |
| Coating Type | TiAlN multi-layer PVD | TiAlN / TiSiN |
| Coating Hardness | 3,200 HV | 2,800 – 3,500 HV |
| Max Operating Temp. | 900 °C | 800 – 1,000 °C |
| Grain Size | 0.8 µm ultra-fine | 0.6 – 1.2 µm |
Grade Comparison Matrix
| Grade | Coating | Best For | Speed vs. Life |
|---|---|---|---|
| PR1535 | TiAlN PVD | Steel, SS, Cast Iron | Balanced |
| PR1725 | TiSiN PVD | Hardened Steel (>45 HRC) | High Speed |
| CA6515 | TiCN CVD | General Machining | Long Life |
| KW10 | Uncoated | Aluminum, Non-ferrous | High Speed |
Chipbreaker Profile
The SGM series features an optimized two-flute parabolic flute profile designed for efficient chip evacuation in micro-diameter drilling.
| Feature | Specification | Benefit |
|---|---|---|
| Flute Form | Parabolic, 2-flute | Wide chip pocket, reduced clogging |
| Rake Angle | 12° positive | Low cutting force, reduced heat |
| Margin Width | 0.28 mm | Stable wall contact, accurate holes |
| Chisel Edge | S-thinned, 0.18 mm | Reduced thrust force at entry |
| Point Geometry | Self-centering 140° split point | Minimal walk, precise positioning |
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Machinability | Recommended |
|---|---|---|---|
| Carbon Steel | P.1 – P.3 | ★★★★★ Excellent | Yes – Primary target |
| Alloy Steel | P.4 – P.6 | ★★★★☆ Very Good | Yes |
| Stainless Steel | M.1 – M.3 | ★★★★☆ Very Good | Yes |
| Cast Iron | K.1 – K.3 | ★★★☆☆ Good | Conditional |
| Hardened Steel (>45 HRC) | H.1 | ★★☆☆☆ Moderate | Reduce speed 30% |
| Aluminum | N.1 – N.3 | ★★★★☆ Very Good | Yes – Use uncoated preferred |
Application Map by Operation
| Operation | Suitability | Max Depth | Notes |
|---|---|---|---|
| Through-Hole Drilling | ★★★★★ Ideal | 3×D | Excellent chip evacuation |
| Blind-Hole Drilling | ★★★★☆ Recommended | 2×D | Monitor bottom chip packing |
| Peck Drilling | ★★★★★ Ideal | 5×D | Use 0.5×D peck depth for deep holes |
| Spot Drilling | ★★★☆☆ Possible | 0.5×D | Use dedicated spot drill for best results |
| Helical Interpolation | ★★☆☆☆ Not Advised | — | Micro-drill not designed for milling paths |
Recommended Cutting Conditions
| Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | RPM (approx.) |
|---|---|---|---|
| Low-Carbon Steel (C<0.25%) | 85 | 0.11 | 11,763 |
| Medium-Carbon Steel | 75 | 0.1 | 10,379 |
| Alloy Steel (AISI 4140) | 65 | 0.09 | 8,995 |
| Stainless Steel (304) | 55 | 0.08 | 7,611 |
| Stainless Steel (316L) | 50 | 0.075 | 6,919 |
| Gray Cast Iron (GG25) | 55 | 0.12 | 7,611 |
Note: RPM values are calculated for the 2,3 mm diameter. Always start at 70% of recommended values and increase based on machine stability and chip formation.
Operating Guidelines
- Coolant: High-pressure internal coolant (minimum 20 bar) is strongly recommended for holes deeper than 1.5×D. Use water-miscible emulsion (5–8% concentration) or neat oil.
- Peck Cycle: For depths exceeding 2×D, employ a peck drilling cycle with retract to clear chips. Peck depth = 0.3–0.5×D; full retract every 2×D.
- Entry Angle: Ensure the workpiece surface is perpendicular to the drill axis. For angled or curved entry, use a spot drill or center drill first.
- Run-out: Maximum tool run-out must not exceed 0.01 mm at the tool tip. Verify collet/chuck condition before each use.
- Pre-drilling: Not required for this self-centering point geometry on flat surfaces. For cast or forged surfaces, spot-drill to prevent wandering.
- Speed & Feed Ramp: Reduce spindle speed by 20% and feed by 10% for the first 5 holes to break in the cutting edge.
- Chip Inspection: Target short, curled chips (C-shape or 6-shape). Long stringy chips indicate insufficient feed; powdery chips indicate excessive speed.
Toolholder Compatibility
| Holder Type | Min. Collet Size | Run-out Capability | Recommendation |
|---|---|---|---|
| ER Precision Collet Chuck | ER16 (Ø2.0–10.0 mm) | ≤ 0.010 mm | Recommended for general use |
| Hydraulic Expansion Chuck | HSK-E32 / HSK-E40 | ≤ 0.003 mm | Best for high-precision finishing |
| Shrink Fit Holder | 3–12 mm range | ≤ 0.003 mm | Excellent for high-speed machining |
| Drill Chuck (Keyless) | 0.5–6.0 mm | ≤ 0.020 mm | Acceptable for manual machines only |
All holders must be balanced to G2.5 or better at maximum operating RPM. Verify clamping torque per manufacturer specification.
Packaging & Ordering Information
| Attribute | Details |
|---|---|
| Manufacturer Part Number | SGM07981 |
| Packaging Unit | 1 piece per plastic tube with foam insert |
| Minimum Order Quantity | 1 piece |
| Bulk Packaging | 50 pieces per master carton (anti-static foam) |
| Warranty | Standard Kyocera manufacturer warranty against material defects |
| Certificate of Conformance | Available upon request for batch orders |
| HS Code | 8207.50.00 (Interchangeable tools for rock drilling) |
Catalog Meta Data
| Field | Value |
|---|---|
| Catalog Series | SGM – Solid Carbide Micro Drills |
| Product Family | 2-Flute General Purpose Drills |
| Revision Date | 2026-Q2 |
| ECCN Classification | 1C006.b (Tungsten carbide tools) |
| RoHS Status | Compliant (Directive 2011/65/EU) |
| REACH Status | Compliant – no SVHC > 0.1% w/w |
| Conflict Minerals | CMRT 6.01 submitted annually |
| 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
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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
✓ 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.
