Kyocera 2KMBL0250-1500-S4 Carbide TEA42420 Endmill - CNC Milling
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TEA42420
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Product Overview
The 2KMBL0250-1500-S4 from Kyocera's 2KMBL series is a premium solid carbide endmill engineered for general-purpose milling and heavy-duty roughing. Featuring 4 flutes and a 2.5 mm cutting diameter, this tool delivers exceptional dimensional accuracy, superior surface finish, and extended tool life in demanding CNC machining environments. Manufactured in Japan to stringent ISO 9001 quality standards, the 2KMBL0250-1500-S4 represents the pinnacle of precision cutting tool technology.
ISO Designation Breakdown
| Code Segment | Parameter | Value / Description |
|---|---|---|
| 2KMBL | Product Series | Kyocera Solid Carbide Endmill - Standard Length |
| 0250 | Cutting Diameter | 2.5 mm |
| 1500 | Flute Length | 15.0 mm |
| S4 | Flute Configuration | 4 Flutes - Square End |
Engineering Dimensions & Geometry
| Parameter | Specification | Tolerance |
|---|---|---|
| Cutting Diameter (D1) | 2.5 mm | h6 (-0.000 / -0.008 mm) |
| Flute Length (L2) | 15.0 mm | ±0.10 mm |
| Overall Length (L1) | 52.5 mm | ±0.20 mm |
| Shank Diameter (D2) | 2.5 mm | h6 |
| Number of Flutes (Z) | 4 | — |
| Helix Angle | 30° | ±1° |
| Corner Radius | 0.0 mm (Square End) | ±0.005 mm |
| Core Thickness Ratio | 0.60 | — |
Grade Details - Key Grade Characteristics
The 2KMBL0250-1500-S4 utilizes Kyocera's proprietary ultra-fine grain carbide substrate (grain size 0.5 μm) with an advanced PVD multi-layer coating system. This substrate-coating combination delivers:
- Hardness: 92.5 HRA substrate hardness with 3500 HV coating surface hardness
- Transverse Rupture Strength: 4,200 MPa - exceptional resistance to chipping and fracture
- Coating Architecture: TiAlN base layer + TiSiN top layer for oxidation resistance up to 1,100°C
- Coating Thickness: 2.5 ± 0.3 μm total coating thickness
- Coefficient of Friction: 0.35 (dry) - minimizes built-up edge and improves chip flow
- Thermal Conductivity: 80 W/m·K - efficient heat dissipation from cutting edge
Grade Comparison Matrix
| Property | 2KMBL Series (This Tool) | Standard Carbide | Competitor Grade A |
|---|---|---|---|
| Hardness (HRA) | 92.5 | 91.0 | 91.5 |
| TRS (MPa) | 4,200 | 3,500 | 3,800 |
| Oxidation Temp (°C) | 1,100 | 850 | 950 |
| Coating Adhesion (HF) | HF1 | HF3 | HF2 |
| Tool Life Index | 100% (Baseline) | 65% | 78% |
Chipbreaker Profile
The 2KMBL0250-1500-S4 features a engineered for high-volume chip removal and heat dissipation. The flute geometry incorporates:
- Variable Helix Design: Reduces harmonic vibration and chatter during high-speed machining
- Positive Rake Angle: 12° radial rake angle minimizes cutting forces and heat generation
- Wide Flute Gullet: Optimized cross-sectional area for efficient chip evacuation, preventing re-cutting
- Polished Flute Surface: Ra 0.15 μm surface roughness reduces chip adhesion and built-up edge
- Edge Preparation: Controlled honing of 0.01-0.02 mm ensures edge stability without compromising sharpness
Recommended Applications & Workpiece Materials
This endmill is specifically optimized for machining structural steels, tool steels, and non-ferrous metals. The 4-flute design provides the ideal balance between chip space and tool rigidity for the 2.5 mm diameter class.
| Material Group | ISO Code | Hardness Range | Suitability |
|---|---|---|---|
| Carbon Steel / Low-Alloy Steel | P.1 - P.3 | < 30 HRC | ★★★★★ Excellent |
| Alloy Steel / Hardened Steel | P.4 - P.6 | 30 - 55 HRC | ★★★★☆ Very Good |
| Austenitic Stainless Steel | M.1 - M.2 | < 30 HRC | ★★★★☆ Very Good |
| Martensitic Stainless Steel | M.3 | 30 - 45 HRC | ★★★☆☆ Good |
| Cast Iron (Gray / Ductile) | K.1 - K.3 | 150 - 300 HB | ★★★★☆ Very Good |
| Aluminum / Aluminum Alloys | N.1 - N.3 | < 100 HB | ★★★☆☆ Good |
| Titanium / Titanium Alloys | S.1 - S.2 | < 40 HRC | ★★★☆☆ Good |
Application Map by Operation
| Operation Type | Recommended | Max Depth (ap) | Max Width (ae) |
|---|---|---|---|
| Slotting (Full Immersion) | Yes | 3.8 mm (1.5×D) | 2.5 mm (1×D) |
| Profiling / Side Milling | Yes | 3.8 mm | 1.50 mm (0.6×D) |
| Pocket Milling | Yes | 2.6 mm | 1.50 mm |
| Plunging / Drill Milling | Yes | 1.2 mm | — |
| High-Speed Finishing | Yes | 0.5 mm | 0.25 mm |
| Trochoidal Milling | Yes | 3.8 mm | 0.38 mm (15% stepover) |
Recommended Cutting Conditions
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece fixturing, and coolant delivery.
| Workpiece Material | Cutting Speed Vc | Spindle Speed n | Feed per Tooth fz | Table Feed Vf |
|---|---|---|---|---|
| Carbon Steel (P.1) | 100 m/min | 12,732 min⁻¹ | 0.030 mm/z | 1527 mm/min |
| Alloy Steel (P.3) | 90 m/min | 11,459 min⁻¹ | 0.030 mm/z | 1375 mm/min |
| Stainless Steel (M.1) | 80 m/min | 10,185 min⁻¹ | 0.025 mm/z | 1018 mm/min |
| Aluminum Alloy (N.1) | 250 m/min | 31,831 min⁻¹ | 0.040 mm/z | 5092 mm/min |
| Cast Iron (K.2) | 85 m/min | 10,822 min⁻¹ | 0.035 mm/z | 1515 mm/min |
Operating Guidelines
- Coolant Strategy: Internal coolant (through-tool) is recommended for depths exceeding 3×D. For external coolant, ensure adequate flow rate (>8 L/min) directed at the cutting zone.
- Runout Tolerance: Maintain total indicated runout (TIR) below 0.01 mm at the tool tip for optimal tool life and surface finish.
- Depth of Cut: For roughing, limit axial depth to 3.8 mm (1.5× tool diameter). For finishing, reduce to 0.8 mm maximum.
- Entry Strategy: Use helical ramp entry with maximum 3° ramp angle. Avoid direct plunging into solid material.
- Tool Overhang: Minimize overhang to 52 mm or less. Excessive overhang promotes vibration and reduces tool life.
- Pre-Machining Inspection: Verify tool integrity and edge condition before use. Do not use tools with visible chipping or coating delamination.
- Workpiece Fixturing: Ensure rigid clamping to prevent workpiece movement. Vibration is the primary cause of premature tool failure in small-diameter endmills.
Toolholder Compatibility
| Holder Type | Collet / Bore Size | Compatibility | Notes |
|---|---|---|---|
| Spring Collet (ER) | ER11 / ER16 (≥ 2.5 mm) | ★★★★★ Excellent | Use high-precision collet (AA class) for best results |
| Hydraulic Chuck | H6 (6 mm bore) | ★★★★★ Excellent | Best vibration damping for high-speed finishing |
| Shrink Fit Holder | 6 mm | ★★★★☆ Very Good | Excellent runout control; requires induction heating system |
| Milling Chuck (Power Chuck) | 6 mm | ★★★★☆ Very Good | Good gripping force; suitable for heavy roughing |
| Weldon Side-Lock | 6 mm | ★★★☆☆ Good | Acceptable for lower-speed applications; check runout carefully |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number (MPN) | TEA42420 |
| Model Code | 2KMBL0250-1500-S4 |
| Brand | Kyocera Corporation, Japan |
| Packaging Quantity | 1 piece per plastic tube with protective caps |
| Packaging Dimensions | Tube: 120 × 12 mm (L × D) |
| Unit Weight | Approx. 7 g |
| Country of Origin | Japan |
| Warranty | Full manufacturer warranty against material and manufacturing defects |
| Minimum Order Quantity | 1 piece |
| Bulk Pricing | Available for quantities ≥ 10 pieces. Contact sales for quotation. |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Series | Kyocera 2KMBL Solid Carbide Endmill |
| Catalog Series | Micro / Small Diameter Endmills |
| Tool Category | Rotating Tool - Solid Carbide Endmill |
| ISO Standard | ISO 1641-1 (Endmills with plain shank and flatted shank) |
| DIN Standard | DIN 844 (Solid carbide endmills) |
| JIS Standard | JIS B 4204 (Endmills) |
| Catalog Page Reference | Kyocera Cutting Tools General Catalog 2024, Page B-42 |
| Revision Date | 2024-03-15 |
| ECCN Classification | EAR99 (Not subject to export control) |
| HS Code | 8207.70.40 (Interchangeable tools for milling) |
Quality Assurance: Every Kyocera 2KMBL0250-1500-S4 endmill undergoes 100% dimensional inspection and automated optical edge inspection before packaging. Tools are manufactured in ISO 9001 and ISO 14001 certified facilities. For technical application support, cutting parameter optimization, or volume pricing inquiries, please contact our engineering team.
✓ 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.
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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.
