Kyocera 1/2 TA SGS31189 4FL SQ | Ball Nose Mill Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS31189
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Product Overview
The Kyocera SGS31189 is a precision-engineered solid carbide 4FL square end end mill featuring the TA – Uncoated Micro-Grain Carbide grade. Designed for Slotting, profiling, face milling, and shoulder milling, this tool delivers exceptional surface finish, dimensional accuracy, and extended tool life on CNC machining centers and 5-axis milling machines. The 1/2" cutting diameter combined with None (Uncoated) ensures stable performance across high-speed machining operations.
Product Code Designation Breakdown
Kyocera SGS series part numbers follow a structured coding system:
| Code Segment | Value | Meaning |
|---|---|---|
| SGS | SGS | Solid Carbide End Mill Series |
| Series ID | 31 | Product Family / Geometry Group |
| Item No. | 189 | Specific Size & Configuration Identifier |
| Flutes | 4FL | 4-Flute Design |
| Nose Type | SQ | Square End |
| Grade | TA | TA – Uncoated Micro-Grain Carbide |
Engineering Dimensions & Geometry
| Parameter | Imperial (in) | Metric (mm) | Tolerance |
|---|---|---|---|
| Cutting Diameter (D1) | 0.5 | 12.7 | h6 |
| Shank Diameter (D2) | 0.5 | 12.7 | h5 |
| Overall Length (L1) | 2.5 | 63.5 | ±0.50 mm |
| Flute Length (L2) | 0.744 | 18.89 | +0.30 / -0.10 mm |
| Corner Radius | Square (0.000) | — | |
| Helix Angle | 35° | ±1° | |
| Number of Flutes | 4 | — | |
Grade Details – Key Grade Characteristics
| Property | Specification | Performance Impact |
|---|---|---|
| Grade Name | TA – Uncoated Micro-Grain Carbide | Premium performance tier |
| Coating | None (Uncoated) | Extended tool life, heat resistance |
| Carbide Substrate | 0.6 μm micro-grain tungsten carbide | High toughness + wear resistance |
| Hardness | 91.5 HRA | Superior abrasion resistance |
| Transverse Rupture Strength | 4,000 MPa | High feed capability |
| Coating Color | Metallic Grey | Visual identification |
| Max Operating Temp | 600°C | Dry / MQL machining capable |
Grade Comparison Matrix
| Attribute | Grade TA | Grade TA (Reference) | Best Use Case |
|---|---|---|---|
| Wear Resistance | ★★★★★ | ★★★★☆ | High-volume steel production |
| Toughness | ★★★★☆ | ★★★★★ | Interrupted cuts / unstable setups |
| Heat Resistance | ★★★★★ | ★★★☆☆ | High-speed dry machining |
| Surface Finish Quality | ★★★★★ | ★★★★★ | Mirror-finish die/mold work |
| Price Point | Premium | Standard | Cost-sensitive aluminum work |
Flute Geometry & Chip Management Profile
The 4FL configuration of the SGS31189 features an optimized flute geometry specifically engineered for square end applications:
- Helix Angle: 35° — provides smooth cutting action and gradual chip evacuation, minimizing chatter in deep-pocket machining.
- Core Diameter Ratio: 65% of tool diameter — ensures maximum rigidity for reduced deflection in long-overhang operations.
- Flute Width: Optimized for 4-flute balance between chip space and tool core strength.
- Edge Preparation: Honing (0.02–0.03 mm) on primary cutting edges to prevent micro-chipping during high-speed engagement.
- Surface Finish: Mirror-polished flutes (Ra 0.1 μm) reduce friction and built-up edge formation.
Recommended Applications & Workpiece Materials
| Material Group | Machinability | Recommended Operation | Expected Tool Life |
|---|---|---|---|
| Carbon Steel (C45, 1045) | ★★★★★ | Profiling, finishing, contouring | Excellent |
| Alloy Steel (4140, 4340) | ★★★★☆ | Semi-finishing, 3D machining | Very Good |
| Stainless Steel (304, 316) | ★★★☆☆ | Light finishing, contouring | Good |
| Cast Iron (GG25, GGG50) | ★★★★★ | Profiling, mold finishing | Excellent |
| Hardened Steel (HRC 45–55) | ★★★☆☆ | Hard milling, die finishing | Moderate |
Application Map by Operation
| Operation Type | Suitability | Max Ae/D Ratio | Notes |
|---|---|---|---|
| Profiling / Contouring | ★★★★★ | 0.5×D | Primary application; excellent surface finish |
| Slotting | ★★★★☆ | 0.5×D | Full slotting capable with proper feeds |
| Plunging | ★★☆☆☆ | 0.2×D | Use ramp entry; avoid direct plunge |
| 3D Finishing | ★★★☆☆ | 0.05×D stepover | Use small stepover for best finish |
| High-Feed Roughing | ★★☆☆☆ | 0.2×D | Not recommended; use dedicated roughing tools |
Recommended Cutting Conditions
Parameters based on 12.7 mm (1/2") diameter, 4FL square end end mill, Grade TA. Adjust according to machine rigidity and workpiece fixturing.
| Workpiece Material | Cutting Speed Vc (m/min) | Spindle Speed n (rpm) | Feed Rate Vf (mm/min) | Ap Max (mm) | Coolant |
|---|---|---|---|---|---|
| Carbon Steel | 120 | 3007 | 180 | 6.3 | External / MQL |
| Stainless Steel | 90 | 2255 | 108 | 4.4 | External / Flood |
| Aluminum Alloy | 300 | 7519 | 751 | 9.5 | Air Blast / MQL |
| Cast Iron | 140 | 3758 | 206 | 7.6 | Dry / Compressed Air |
Operating Guidelines
- Runout Check: Maintain TIR ≤ 0.01 mm at the tool tip. Excessive runout reduces tool life by 30–50%.
- Engagement Strategy: Use arc-in / arc-out toolpaths for entry. Avoid 90° direct plunging with square-end tools.
- Chip Evacuation: Ensure adequate coolant flow or air blast to prevent chip recutting, especially in deep pockets.
- Speed Ramp: Ramp spindle speed over 3–5 seconds to avoid thermal shock to the carbide substrate.
- Tool Inspection: Inspect cutting edges under 10× magnification after every 30 minutes of cutting time.
- Depth of Cut: For finishing, keep axial depth (Ap) at 0.5×D or less. For semi-finishing, Ap up to 1.0×D is acceptable.
- Corner Wear Limit: Retire tool when flank wear exceeds 0.15 mm or when surface finish degrades below Ra 0.8 μm.
Toolholder / Collet Compatibility
| Holder Type | Required Collet / Chuck | TIR Requirement | Max Speed |
|---|---|---|---|
| ER Spring Collet | ER16 / ER20 / ER32 (match shank) | ≤ 0.015 mm | 25,000 rpm |
| Hydraulic Chuck | HydroForce 12.7 mm | ≤ 0.003 mm | 30,000 rpm |
| Shrink Fit | Kyocera Shrink 12.7 mm | ≤ 0.003 mm | 40,000 rpm |
| Milling Chuck (Power) | PowerMill 12.7 mm | ≤ 0.010 mm | 20,000 rpm |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS31189 |
| Packaging Unit | 1 piece per plastic tube with foam insert |
| Country of Origin | Japan |
| Warranty | 12-month manufacturer defect warranty |
| Minimum Order Quantity | 1 piece |
| Bulk Pricing | Available for quantities ≥ 10 pieces — contact sales |
Catalog Meta Data
| Field | Value |
|---|---|
| Catalog Series | SGS30xxx Standard Length Ball Nose |
| Tool Category | Solid Carbide End Mill |
| Industry Standard | DIN 6527, ISO 1641 |
| GHS Classification | Not applicable (solid article) |
| ECCN | EAR99 |
| HS Code | 8207.70.40 |
✓ 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
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✓ 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.
