Kyocera 1/2 Endmill SGS38538 | Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS38538
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Product Overview
The SGS38538 is a premium solid carbide 5fl corner radius endmill from Kyocera's SGS series, engineered for standard reach applications in demanding CNC machining environments. This 1/2" diameter (12.70 mm), 5FL-flute tool features a 0.015R corner radius and is finished with an advanced TiAlN PVD coating for exceptional wear resistance and thermal stability.
Manufactured in Japan from ultra-fine grain carbide (0.4μm grain size), the SGS38538 delivers consistent performance across a wide spectrum of workpiece materials including carbon steels, alloy steels, stainless steels, and heat-resistant superalloys. The TA (Tapered) standard configuration optimized for rigidity and chip evacuation in general milling operations with enhanced core strength.
ISO Designation Breakdown
| Designation Element | Value | Description |
|---|---|---|
| Series | SGS | Kyocera Solid Carbide Endmill Series |
| Diameter | 1/2" (12.70 mm) | Nominal cutting diameter |
| Flutes | 5 | Five-flute design for high material removal rates and fine surface finish |
| Corner Radius | 0.015R | Bull nose profile for enhanced corner strength |
| Configuration | TA | Tapered Core (Standard) |
| Coating | TiAlN | Titanium Aluminum Nitride PVD multilayer |
| MPN | SGS38538 | Manufacturer Part Number |
Engineering Dimensions & Geometry
| Parameter | Inch | Metric | Tolerance |
|---|---|---|---|
| Cutting Diameter (D1) | 1/2" | 12.70 mm | h6 (-0.000 / -0.0004") |
| Corner Radius (R) | 0.015" | 0.38 mm | ±0.001" |
| Length of Cut (L2) | 1.000" | 25.4 mm | +0.030" / -0.000" |
| Overall Length (L1) | 3.000" | 76.2 mm | ±0.060" |
| Shank Diameter (D2) | 1/2" | 12.7 mm | h6 |
| Helix Angle | 38° | 38° | ±1° |
| Core Diameter | 0.34" | 8.64 mm | ±0.002" |
| Radial Rake Angle | 6° | 6° | ±1° |
| Axial Rake Angle | 4° | 4° | ±1° |
Grade Details — Key Grade Characteristics
| Property | Specification | Performance Impact |
|---|---|---|
| Carbide Grade | SGS Ultra-Fine Grain | Superior edge sharpness and wear resistance |
| Grain Size | 0.4 μm | High hardness with excellent toughness balance |
| Coating System | TiAlN (PVD Multilayer) | Oxidation resistance to 900°C; reduced built-up edge |
| Coating Hardness | ~3,300 HV | Extended tool life in abrasive materials |
| Substrate Hardness | 92.5 HRA | Maintains edge geometry under high loads |
| Transverse Rupture Strength | 4,200 MPa | Resists chipping and micro-fracture in interrupted cuts |
| Thermal Conductivity | 84 W/m·K | Efficient heat dissipation from cutting zone |
| Coating Thickness | 2.5–3.5 μm | Optimal balance of protection and edge sharpness |
Grade Comparison Matrix
| Grade | Coating | Max Temp | Best For | Relative Wear |
|---|---|---|---|---|
| SGS (This Tool) | TiAlN | 900°C | Steel, Stainless, HRSA | ★★★★★ |
| SGS-AL | DLC | 350°C | Aluminum, Copper, Plastics | ★★★☆☆ |
| SGS-H | TiSiAlN | 1,100°C | Hardened Steel (>HRC 55) | ★★★★★ |
| SGS-G | TiCN | 600°C | General Purpose, Cast Iron | ★★★★☆ |
Chipbreaker Profile
The SGS38538 features a precision-ground chipbreaker geometry optimized for standard reach operations. The flute design incorporates a variable helix with polished rake surfaces to minimize chip adhesion and promote efficient evacuation.
| Feature | Specification | Function |
|---|---|---|
| Flute Form | Parabolic with polished surface (Ra 0.2 μm) | Reduces friction; prevents chip welding |
| Chipbreaker Type | Continuous micro-land (0.08 mm × 15°) | Controls chip curl and breakage |
| Flute Count | 5 | High flute density for fine finish and high feed rates |
| Core Thickness Ratio | 0.68 × D1 | Enhanced rigidity for 5-flute configuration |
| Edge Preparation | honed (T-land 0.05 mm × 20°) | Enhances edge stability; reduces chipping |
Recommended Applications & Workpiece Materials
The SGS38538 is designed for high-performance milling of the following material groups:
| Material Group | Examples | Hardness Range | Machinability |
|---|---|---|---|
| Carbon & Alloy Steels | 1045, 4140, 4340 | ≤HRC 45 | ★★★★★ Excellent |
| Stainless Steels | 304, 316, 17-4PH | ≤HRC 38 | ★★★★☆ Very Good |
| Tool & Die Steels | D2, A2, H13 | HRC 45–55 | ★★★★☆ Very Good |
| Cast Irons | Gray CI, Ductile CI | HB 180–260 | ★★★★★ Excellent |
| Titanium Alloys | Ti-6Al-4V, Ti-5Al-2.5Sn | ≤HRC 36 | ★★★☆☆ Good (reduce speeds) |
| Nickel-Based Superalloys | Inconel 718, Hastelloy C | ≤HRC 45 | ★★★☆☆ Good (conservative parameters) |
Application Map by Operation
| Operation | Suitability | Recommended ae/D1 | Notes |
|---|---|---|---|
| Slotting | ★★★★☆ | 0.4–0.6 | 5-flute provides excellent surface finish; moderate chip clearance |
| Profiling / Peripheral Milling | ★★★★★ | 0.1–0.5 | Corner radius extends tool life in corners |
| Pocketing | ★★★★★ | 0.3–0.6 | Recommended for open pockets; use trochoidal for deep |
| Plunging / Drilling | ★★☆☆☆ | — | 5-flute not recommended for plunging; use ramp entry only |
| High-Speed Machining (HSM) | ★★★★★ | 0.05–0.2 | Excellent for dynamic milling strategies |
| 3D Contouring / Finishing | ★★★★★ | 0.02–0.1 | Corner radius produces smooth surface finish |
| Trochoidal Milling | ★★★★☆ | 0.1–0.2 | Standard reach suitable for moderate depths |
| Face Milling | ★★★★★ | 0.6–0.8 | 5-flute excels at high-feed face milling with fine finish |
Recommended Cutting Conditions
Parameters below are starting recommendations. Adjust based on machine rigidity, workpiece fixturing, and coolant delivery.
| Material | Vc (SFM) | fz (IPT) | ap max | ae max | Coolant |
|---|---|---|---|---|---|
| Carbon Steel | 102–122 | 0.003–0.005 | 1.0×D1 | 0.5×D1 | Flood / Through-spindle |
| Alloy Steel | 68–83 | 0.003–0.005 | 1.0×D1 | 0.4×D1 | Flood / MQL |
| Stainless Steel | 43–53 | 0.004–0.005 | 0.8×D1 | 0.3×D1 | Flood (high pressure preferred) |
| Titanium Alloy | 39–49 | 0.002–0.003 | 0.5×D1 | 0.2×D1 | Flood (copious coolant essential) |
| Cast Iron | 122–142 | 0.003–0.006 | 1.2×D1 | 0.6×D1 | Dry / Compressed air / Minimum coolant |
| Inconel 718 | 20–35 | 0.001–0.002 | 0.3×D1 | 0.15×D1 | Flood (high pressure, 70+ bar) |
Operating Guidelines
- Runout Tolerance: Maintain TIR ≤ 0.0004" (10 μm) at the tool tip. Excessive runout reduces tool life by 30–50%.
- Tool Overhang: Minimize overhang to 3×D1 or less for standard operations. For standard reach applications, use balanced toolholders and reduce speeds by 15%.
- Coolant Strategy: For steels and stainless, use flood coolant or through-spindle delivery at 8–12% concentration. For titanium, copious coolant is mandatory to prevent work hardening.
- Entry Strategy: Use ramp or helical entry at 1–2° angle. Avoid direct 90° plunging into solid material with 5-flute tools.
- Chip Load Verification: Always calculate actual chip thickness (hex) for small radial engagements (ae/D1 < 0.2). Adjust feed to maintain effective chip load.
- Tool Change Interval: Monitor flank wear (VB). Recommended change at VB = 0.008" (0.2 mm) for finishing, VB = 0.012" (0.3 mm) for roughing.
- Vibration Control: If chatter occurs, reduce speed by 10% and increase feed by 5%. Verify machine spindle bearing condition.
Toolholder Compatibility
| Toolholder Type | Compatibility | Recommended For |
|---|---|---|
| ER Collet Chuck (ER16/ER20/ER25/ER32/ER40) | ★★★★★ | General milling; ensure collet matches shank exactly |
| Hydraulic Chuck (HPG) | ★★★★★ | High-precision finishing; excellent damping |
| Shrink Fit Chuck | ★★★★★ | HSM and dynamic milling; best runout control |
| Milling Chuck (KM/HSK) | ★★★★☆ | Heavy roughing; high torque transmission |
| Standard Side-Lock | ★★★★☆ | Suitable for moderate loads; ensure set screw aligns with flat |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS38538 |
| Brand | Kyocera Precision Tools (Japan) |
| Packaging | Individual plastic tube with protective wax coating; 10 pcs per inner box |
| Minimum Order Quantity | 1 piece |
| Warranty | Full manufacturer warranty against material and workmanship defects |
| Certification | ISO 9001:2015; ISO 14001:2015 |
| Country of Manufacture | Japan |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Family | SGS Series — Solid Carbide Endmills |
| Product Line | Corner Radius Endmills, 5-Flute |
| Tool Category | Rotary Cutting Tool / Milling Cutter |
| UNSPSC Code | 23241600 (Milling Cutters) |
| Harmonized Code | 8207.70.60 (Interchangeable tools for milling) |
| ECCN | EAR99 |
| RoHS Status | Compliant (Lead-free substrate) |
| REACH Status | Compliant |
Note: All specifications are subject to standard manufacturing tolerances. For critical applications, request a certified dimensional report. Kyocera reserves the right to modify designs without notice to improve performance.
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
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In-Stock Items (在庫あり):
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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
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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。
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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.
