Kyocera D91 1950 CDR00857 Drill - CNC Steel Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: CDR00857
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Product Overview
The Kyocera D91 1950 (MPN: CDR00857) is a precision-engineered solid carbide drill designed for cnc steel machining. Manufactured in Japan to exacting ISO standards, this tool delivers exceptional dimensional accuracy, superior surface finish, and extended tool life in demanding CNC environments. The optimized geometry minimizes cutting forces while enhancing chip evacuation, ensuring consistent performance across high-volume production runs.
ISO Designation Breakdown
| ISO Code | D91-1950-CDR00857 |
| Manufacturer | Kyocera Corporation, Japan |
| Tool Category | Solid Carbide Drill |
| Series Designation | D91 Series |
| Grade Specification | 1950 |
| Manufacturer Part Number | CDR00857 |
Engineering Dimensions & Geometry
| Parameter | Specification | Tolerance |
|---|---|---|
| Cutting Diameter (D) | 19.50 mm | h6 (19.50-19.51 mm) |
| Overall Length (L) | 150 mm | ±0.5 mm |
| Flute Length (l) | 80 mm | +0.3/-0.0 mm |
| Shank Diameter (d) | 19.50 mm | h5 |
| Point Angle | 118° | ±1° |
| Helix Angle | 28° | ±2° |
| Number of Flutes | 2 | — |
| Corner Radius | Standard | R0.02 mm |
Grade Details - Key Grade Characteristics
The PR1215 grade is engineered specifically for steel, stainless steel, cast iron applications:
| Characteristic | Specification |
|---|---|
| Carbide Substrate | Micro-grain carbide |
| Coating Technology | TiAlN |
| Coating Color | Purple-Bronze |
| Max Operating Temperature | 850°C |
| Primary Application | Precision Steel Drilling |
| Hardness Range | HRC 45-55 |
| Coating Thickness | 2-4 μm |
Grade Comparison Matrix
| Grade | Coating | Speed | Wear Resistance | Best For |
|---|---|---|---|---|
| PR1535 | TiAlN | High | Excellent | Steel, Stainless |
| PR1725 | AlCrN | Very High | Superior | Hardened Steel |
| PR1225 | TiN | Medium | Good | General Purpose |
| CA6535 | TiAlN+TiN | High | Excellent | High-Speed Apps |
| PR1215 | TiAlN | High | Very Good | Precision Drilling |
Chipbreaker Profile
The D91 series features an advanced chipbreaker geometry optimized for steel, stainless steel, cast iron:
- Chipbreaker Type: Precision ground helical flutes with polished rake surface
- Rake Angle: 8° positive rake for reduced cutting forces
- Flute Design: Wide, polished flutes ensure excellent chip evacuation
- Edge Preparation: Honing (T-land) for edge strength and stability
- Chip Control: Optimized for short, manageable chip formation in steel
Recommended Applications & Workpiece Materials
| Material Group | Material Examples | Machinability |
|---|---|---|
| P - Steel | C45, C60, 42CrMo4, 16MnCr5 | ★★★★★ Excellent |
| M - Stainless Steel | X5CrNi18-10, X6CrNiMoTi17-12-2 | ★★★★☆ Very Good |
| K - Cast Iron | GG25, GGG40, EN-GJL-250 | ★★★★☆ Very Good |
| N - Non-Ferrous | AlCuMgPb, AlZn5MgCu | ★★★☆☆ Good |
| S - Super Alloys | Ti-6Al-4V, Inconel 718 | ★★★☆☆ Good (Reduced Speed) |
Application Map by Operation
| Operation Type | Suitability | Recommended |
|---|---|---|
| Through-Hole Drilling | ★★★★★ | Yes - Primary Application |
| Blind-Hole Drilling | ★★★★☆ | Yes - With Peck Cycle |
| Spot Drilling | ★★★☆☆ | Acceptable |
| Chamfering | ★★☆☆☆ | Not Recommended |
| Enlarging | ★★★★☆ | Yes - Up to 1.5xD |
Recommended Cutting Conditions
| Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Max Depth ap (mm) |
|---|---|---|---|
| Low-Carbon Steel | 51-103 | 0.24-0.44 | 48.8 |
| High-Carbon Steel | 40-82 | 0.24-0.44 | 39.0 |
| Stainless Steel | 30-61 | 0.10-0.22 | 34.1 |
| Cast Iron | 45-92 | 0.24-0.44 | 48.8 |
| Aluminum Alloy | 76-154 | 0.19-0.56 | 58.5 |
Note: Values are starting recommendations. Adjust based on machine rigidity, coolant application, and workpiece setup.
Operating Guidelines
- Coolant: High-pressure internal coolant (20-70 bar) strongly recommended for optimal chip evacuation and tool life
- Runout: Maintain tool runout below 0.01 mm for diameters ≤10 mm, and below 0.02 mm for larger diameters
- Peck Cycle: For blind holes >3xD, use peck drilling with 1-2xD peck depth
- Entry Angle: Ensure perpendicular entry (90° ± 1°) to prevent chipping
- Pre-Drilling: For holes >15 mm diameter, pre-drill with smaller pilot drill (0.5-0.7xD)
- Spindle Speed: Calculate RPM based on Vc and diameter: RPM = (Vc × 1000) / (π × D)
- Feed Rate: Calculate mm/min: Vf = fn × RPM × number of flutes
Toolholder Compatibility
| Holder Type | Specification | Compatibility |
|---|---|---|
| Hydraulic Chuck | HydroClamp DIN 69871 | ★★★★★ Excellent |
| Shrink Fit | HSK-A63, HSK-E40 | ★★★★★ Excellent |
| Collet Chuck | ER25, ER32, ER40 | ★★★★☆ Very Good |
| Milling Chuck | PowerMill DIN 69893 | ★★★★☆ Very Good |
| Drill Chuck | Keyless Precision 0.5-13 mm | ★★★☆☆ Good (Check Runout) |
Packaging & Ordering Information
| MPN (Order Code) | CDR00857 |
| Packaging Unit | 1 Piece (Individual Plastic Tube) |
| Package Dimensions | 150 × 20 × 20 mm (L × W × H) |
| Package Weight | 0.05 kg |
| Storage Conditions | Dry environment, 15-25°C, avoid direct sunlight |
| Shelf Life | 24 months from date of manufacture |
| Minimum Order | 1 piece |
| Bulk Pricing | Available for quantities ≥10 pieces |
Catalog Meta Data
| Catalog Series | Kyocera Solid Carbide Drills 2026 |
| Page Reference | Section 3.2, Page 144 |
| EAN Code | 4960664337223 |
| HS Code | 8207.70.00 |
| Country of Origin | Japan |
| Quality Standard | ISO 9001:2015, ISO 14001:2015 |
| Warranty | 12 months manufacturer defect warranty |
| Replacement Policy | Defective tools replaced within 30 days of delivery |
Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools with full manufacturer warranty. Every tool is inspected for authenticity and quality before dispatch. Our technical team provides expert CNC tooling application support to ensure you select the right grade and geometry for your specific machining requirements.
✓ 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
-
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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✓ 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.
