Kyocera 1/4 Std SGS38221 ENDMILL | End Mill - CNC Milling Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS38221
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Product Overview
The Kyocera 1/4 ENDMILL 2FL 0.020R Std SGS38221 is a precision-engineered solid carbide end mill manufactured in Japan. Designed for high-performance CNC milling operations, this tool features a 0.020R corner radius and 2FL flute configuration optimized for superior chip evacuation, dimensional accuracy, and extended tool life across a wide range of workpiece materials.
With fewer flutes than standard 4-flute designs, the SGS38221 provides larger chip pockets and improved chip flow, making it ideal for slotting, roughing, and aggressive material removal. Its Std grade carbide substrate ensures maximum wear resistance and edge integrity under demanding cutting conditions.
ISO Designation Breakdown
| Designation Element | Value / Meaning |
| Manufacturer | Kyocera (Japan) |
| Tool Diameter | 1/4 inch (6.35 mm) |
| Tool Type | Solid Carbide End Mill |
| Number of Flutes | 2 (2FL) |
| Corner Radius | 0.020R |
| Carbide Grade | Std |
| MPN / Catalog No. | SGS38221 |
Engineering Dimensions & Geometry
| Parameter | Metric (mm) | Imperial (inch) |
| Cutting Diameter (DC) | 6.35 | 1/4 |
| Overall Length (OAL) | 63.5 | 2.50 |
| Flute Length (FL) | 22.2 | 0.87 |
| Shank Diameter (DCON) | 6.35 | 1/4 |
| Corner Radius (RE) | 0.508 | 0.020 |
| Helix Angle | 38° | 38° |
| Number of Flutes (Z) | 2 | 2 |
| Center Cutting | Yes | Yes |
Grade Details - Key Grade Characteristics
Grade Std represents Kyocera's commitment to advanced carbide metallurgy. General-purpose ultra-fine grain carbide with balanced wear resistance and toughness for versatile machining applications.
- Ultra-fine grain structure (0.5 μm) for superior edge sharpness and wear resistance
- High cobalt content binder ensures exceptional toughness and resistance to chipping
- Optimized for both wet and dry machining environments
- Compatible with a broad spectrum of workpiece materials including steels and stainless steels
- Excellent thermal stability for high-speed milling applications
Grade Comparison Matrix
| Property | Grade Std | Grade TN |
| Grain Size | Ultra-Fine (0.5 μm) | Micro-Grain (0.8 μm) |
| Hardness (HV) | 1,600 | 1,550 |
| Toughness | High | Very High |
| Best For | General Machining | Hardened Materials |
| Max Hardness (HRC) | Up to 45 | Up to 60 |
Chipbreaker Profile
The SGS38221 features a High-Feed chipbreaker geometry engineered specifically for 2FL-flute end mill applications. This profile ensures:
- Efficient chip curling and controlled chip evacuation
- Reduced cutting forces for improved surface finish
- Minimized built-up edge (BUE) when machining sticky materials
- Stable cutting action across variable depths of cut
- Optimized for both roughing and finishing passes
Recommended Applications & Workpiece Materials
| Category | Details |
| Primary Materials | Carbon Steel, Alloy Steel, Stainless Steel, Cast Iron, Aluminum |
| Secondary Materials | Aluminum Alloys, Copper, Brass, Plastics, Composite Materials |
| Ideal Operations | Slotting, Profiling, Contouring, Pocketing, Ramping, Plunging |
| Industries | Aerospace, Automotive, Mold & Die, General Engineering, Medical |
Application Map by Operation
| Operation | Suitability | Notes |
| Face Milling | ★★★★☆ | Excellent for shallow face milling with good surface finish |
| Slotting | ★★★★★ | Full slotting capability with center-cutting design |
| Profiling / Contouring | ★★★★★ | Corner radius ensures smooth transitions and reduced stress |
| Pocketing | ★★★★☆ | Ideal for open and closed pocket machining |
| Ramping | ★★★★☆ | Up to 2° ramping angle recommended for optimal chip control |
| Plunging | ★★★☆☆ | Center-cutting allows limited plunging; prefer ramping entry |
Recommended Cutting Conditions
The following parameters are starting recommendations. Adjust based on machine rigidity, workpiece material, and coolant application.
| Parameter | Value / Range | Unit |
| Cutting Speed (Vc) | 70-130 | m/min |
| Feed per Tooth (fz) | 0.05-0.14 | mm/tooth |
| Axial Depth of Cut (ap) | 0.5-1.5 | × Dc |
| Radial Depth of Cut (ae) | 0.1 – 1.0 | × Dc |
| Coolant Recommendation | External Flood / MQL | — |
Operating Guidelines
- Always use a high-quality toolholder with minimal runout (< 0.01 mm TIR) to maximize tool life
- Ensure proper workpiece clamping and fixture rigidity to prevent vibration and chatter
- Use recommended coolant flow rates to maintain stable cutting temperatures and prevent thermal cracking
- Inspect cutting edges before each use; do not use tools with chipped or damaged flutes
- For optimal surface finish, use climb milling wherever possible
- Reduce feed rate by 20-30% when entering or exiting the workpiece to minimize exit burr
- Store unused end mills in original packaging or protective tubes to prevent edge damage
Toolholder Compatibility
| Holder Type | Compatibility | Notes |
| Hydraulic Chuck | ★★★★★ | Best damping and runout control for finishing |
| Shrink Fit | ★★★★★ | Excellent for high-speed machining with minimal runout |
| ER Collet (ER25/ER32/ER40) | ★★★★☆ | Widely available; ensure high-precision collet grade |
| Milling Chuck | ★★★★☆ | Good for heavy-duty roughing applications |
| Weldon Flat (Side Lock) | ★★★☆☆ | Acceptable for lower-speed operations; may induce runout |
Packaging & Ordering Information
| Item | Details |
| Manufacturer Part Number | SGS38221 |
| Brand | Kyocera (Japan) |
| Packaging | Individual plastic tube with protective end caps |
| Minimum Order Quantity | 1 piece |
| Bulk Pricing | Available for quantities of 10+ and 50+ pieces — contact sales |
| Warranty | Full manufacturer warranty against material and manufacturing defects |
Catalog Meta Data
| Field | Value |
| Product Family | Solid Carbide End Mills — Corner Radius Series |
| Series Designation | SGS Standard Series |
| Tool Standard | ANSI / ISO 13399 Compatible |
| Coating Status | Uncoated / Ready for custom coating |
| Country of Manufacture | Japan |
| Catalog Page Reference | Kyocera Cutting Tools Catalog 2026, Section 3.2 |
| Last Catalog Update | 2026-05-15 |
Need application support? Our CNC tooling specialists are available to help you select the optimal cutting parameters and toolholder setup for your specific machining environment. Contact us at support@kyotow.com.
✓ 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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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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✓ 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.
