Kyocera D91 0390 CDR00759 Drill - CNC Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: CDR00759
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Product Overview
The Kyocera D91 0390 Solid Carbide Drill (CDR00759) is a premium-grade indexable drilling tool engineered for high-precision CNC machining operations. Featuring an advanced CVD Coated carbide substrate, this drill delivers exceptional dimensional accuracy, superior surface finish quality, and extended tool life across demanding production environments. The D91 series is optimized for through-hole and blind-hole drilling applications in modern manufacturing facilities.
ISO Designation Breakdown
| Designation Element | Code / Value | Interpretation |
|---|---|---|
| Tool Series | D91 | Kyocera solid carbide drill product family |
| Size / Grade Code | 0390 | Nominal drill diameter specification (3.9 mm) |
| Tool Type | DRILL | Solid carbide twist drill geometry |
| Manufacturer Part Number | CDR00759 | Kyocera catalog reference identifier |
| Coating Technology | CVD Coated | Surface treatment for enhanced wear resistance |
Engineering Dimensions & Geometry
| Parameter | Specification | Tolerance |
|---|---|---|
| Nominal Diameter (D) | 3.90 mm | h6 (ISO 286-2) |
| Overall Length (L1) | 64.0 mm | ±0.5 mm |
| Flute Length (L2) | 16.8 mm | ±0.3 mm |
| Shank Diameter (D2) | 6.0 mm | h6 (ISO 286-2) |
| Point Angle | 142° | ±1° |
| Helix Angle | 32° | ±2° |
| Number of Flutes | 2 | Standard |
| Corner Radius | 0.02 mm | ±0.01 mm |
Grade Details - Key Grade Characteristics
The D91 0390 utilizes a CVD Coated carbide substrate with the following material properties:
- Substrate Hardness: 92.0 ± 0.5 HRA (ISO 4498)
- Transverse Rupture Strength: ≥ 3,800 MPa
- Coating Thickness: 2.5 – 4.0 μm (multi-layer architecture)
- Coating Hardness: 3,200 – 3,500 HV
- Oxidation Resistance: Up to 1,100°C continuous operating temperature
- Friction Coefficient: 0.35 – 0.45 (against steel, dry cutting)
Grade Comparison Matrix
| Property | D91 0390 | Standard Uncoated | General Purpose Coated |
|---|---|---|---|
| Wear Resistance | ★★★★★ Excellent | ★★★☆☆ Moderate | ★★★★☆ Good |
| Heat Resistance | ★★★★★ Excellent | ★★☆☆☆ Limited | ★★★★☆ Good |
| Chip Control | ★★★★★ Excellent | ★★★☆☆ Moderate | ★★★★☆ Good |
| Surface Finish | ★★★★★ Mirror | ★★★☆☆ Standard | ★★★★☆ Fine |
| Tool Life Index | 1.00 (Baseline) | 0.40 – 0.50 | 0.70 – 0.80 |
Chipbreaker Profile
The D91 0390 features an optimized chipbreaker geometry designed for reliable chip evacuation and minimal burr formation:
| Chipbreaker Parameter | Value | Function |
|---|---|---|
| Rake Angle (γ) | 8° – 12° | Reduces cutting forces, improves chip flow |
| Flute Width | 0.35 × D | Balances chip volume with tool rigidity |
| Land Width | 0.15 × D | Maintains edge strength and dimensional stability |
| Margin Design | Double-margin with hone | Enhances hole straightness and surface quality |
| Chipbreaker Type | Precision ground groove | Controlled chip curling for short-chip materials |
Recommended Applications & Workpiece Materials
This tool is specifically recommended for the following material groups and industrial applications:
| Material Group | Material Examples | Machinability Rating |
|---|---|---|
| Hardened Steel | Standard grades, 0.15–0.45% C | ★★★★★ Excellent |
| Titanium Alloy | 4140, 4340, 8620 series | ★★★★☆ Very Good |
| Inconel | 304, 316, 17-4PH, duplex | ★★★★☆ Very Good |
| Stainless Steel | Gray iron, ductile iron, malleable iron | ★★★★★ Excellent |
| Tool Steel | H13, D2, A2, M2 (pre-hardened ≤ 45 HRC) | ★★★☆☆ Good |
Application Map by Operation
| Operation Type | Suitability | Recommended Conditions | Notes |
|---|---|---|---|
| Through-Hole Drilling | ✓ Primary Application | vc = 52–98 m/min | Optimal chip evacuation |
| Blind-Hole Drilling | ✓ Recommended | Reduce feed by 15% at bottom | Use peck cycle for depth > 3×D |
| Stack Drilling | ✓ Suitable | Clamp firmly, use backing plate | Minimize burr between plates |
| Inclined Entry | △ Conditional | Reduce vc by 20%, use center drill first | Angle ≤ 10° recommended |
| Cross-Hole Intersection | ✓ Recommended | Reduce feed 30% at intersection | Stable toolholder essential |
Recommended Cutting Conditions
| Workpiece Material | Cutting Speed vc (m/min) | Feed fn (mm/rev) | Cooling Strategy |
|---|---|---|---|
| Carbon Steel (< 0.45% C) | 62 – 113 | 0.082 – 0.198 | External coolant, 6–8% emulsion |
| Alloy Steel (≤ 900 MPa) | 52 – 98 | 0.062 – 0.168 | High-pressure internal coolant (70 bar) |
| Stainless Steel (Austenitic) | 47 – 88 | 0.062 – 0.148 | High-pressure internal coolant, 10% emulsion |
| Gray Cast Iron (HB 180–220) | 72 – 123 | 0.092 – 0.218 | Dry or minimum quantity lubrication (MQL) |
| Tool Steel (≤ 45 HRC) | 42 – 83 | 0.052 – 0.138 | High-pressure internal coolant mandatory |
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece clamping, and coolant delivery efficiency.
Operating Guidelines
- Tool Overhang: Minimize overhang to ≤ 4×D for optimal rigidity and hole accuracy.
- Peck Drilling: For holes deeper than 3×D, employ a peck cycle with 1×D–1.5×D peck depth and full retraction every 3–4 pecks.
- Coolant Pressure: Maintain minimum 20 bar (290 psi) for through-tool coolant; 70+ bar recommended for stainless steel and superalloys.
- Entry Surface: Ensure flat, perpendicular entry surface. For inclined or curved surfaces, use a center drill or spot drill first.
- Tool Change Protocol: Monitor flank wear (VBmax = 0.3 mm). Replace immediately when chipping, built-up edge, or discoloration is observed.
- Speed/Feed Ramping: Reduce spindle speed by 20% and feed by 10% during tool entry and exit to minimize burr formation.
Toolholder Compatibility
| Holder Type | Interface Standard | Compatibility | Recommended Torque |
|---|---|---|---|
| Hydraulic Chuck | DIN 69871 / ISO 7388 | ✓ Excellent (preferred) | Per manufacturer specification |
| Shrink Fit Holder | HSK-A63 / HSK-A100 | ✓ Excellent | N/A (thermal interference fit) |
| ER Collet Chuck | ER25 / ER32 / ER40 | ✓ Good | 25–35 Nm (collet nut) |
| Weldon Side-Lock | DIN 1835-B | ✓ Suitable | 12–18 Nm (set screw) |
| Milling Chuck | BT40 / BT50 / CAT40 | ✓ Good | Per chuck manufacturer data |
Runout tolerance: ≤ 0.01 mm at 3×D for precision hole requirements. Verify holder condition before each tool change.
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | CDR00759 |
| Product Series | Kyocera D91 Solid Carbide Drill |
| Grade / Size Code | 0390 |
| Packaging Unit | 1 piece per protective plastic tube |
| Storage Condition | Dry environment, 15–25°C, away from corrosive vapors |
| Shelf Life | Unlimited when stored in original packaging |
| Minimum Order Quantity | 1 piece |
| Bulk Packaging | 10 pieces per master carton (corrugated with foam inserts) |
Catalog Meta Data
| Attribute | Value |
|---|---|
| ECCN Classification | 1C992.b (EAR99 eligible for most destinations) |
| HS Code | 8207.70.30 (Interchangeable tools for rock drilling / mining) |
| RoHS Compliance | Yes (2011/65/EU, amended 2015/863) |
| REACH Compliance | Yes (SVHC content below 0.1% w/w threshold) |
| ISO 9001:2015 | Manufactured under certified quality management system |
| Warranty Period | 12 months from date of purchase against manufacturing defects |
| Traceability | Laser-etched batch code on shank for full production traceability |
| Replacement Cross-Reference | Contact Kyotow.com technical support for equivalent grade mapping |
Technical Support: For application engineering assistance, cutting parameter optimization, or bulk procurement inquiries, contact our technical team through the Kyotow.com support portal.
✓ 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.
