Kyocera SGS37845 TM 0.030R CB Endmill | Carbide - General Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS37845
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1. Product Overview
The Kyocera SGS37845 is a premium 69 mm overall length, 5-flute solid carbide endmill featuring a 0.030R corner geometry and AlCrN High-Performance (TM) substrate. CB (Chipbreaker) design ensures superior - segmented chip formation.
Engineered for general finishing, corner radii, blending, this tool delivers very good (ra 0.25-0.5 μm) with exceptional dimensional stability. The 0.4 μm Submicron carbide substrate combined with AlCrN/TiAlN Nano-Layered PVD provides superior wear resistance and thermal protection during demanding CNC milling operations.
2. ISO Designation Breakdown
| ISO Element | Code | Description |
|---|---|---|
| Product Series | SGS | Kyocera Solid Carbide Endmill Series |
| Grade / Coating | TM | AlCrN High-Performance |
| Chipbreaker | CB | CB (Chipbreaker) |
| Corner Radius | 0.030R | 0.030" (0.762 mm) corner radius |
| Diameter | 3/8" | 9.525 mm cutting diameter |
| Flutes | 5FL | 5-flute design for finishing and semi-finishing |
| Full ISO Code | SGS-TM-CB-0.030R-3/8-5F | Complete product designation |
3. Engineering Dimensions & Geometry
| Parameter | Value | Tolerance | Notes |
|---|---|---|---|
| Cutting Diameter (D1) | 9.525 mm (3/8") | h6 (-0.009 / 0) | Precision ground |
| Shank Diameter (D2) | 9.525 mm (3/8") | h6 (-0.009 / 0) | Standard cylindrical shank |
| Overall Length (L1) | 69 mm | ± 0.50 mm | Standard series length |
| Flute Length (L2) | 25 mm | ± 0.30 mm | 5-flute configuration |
| Corner Radius (R) | 0.030" (0.7620 mm) | ± 0.005 mm | General finishing, corner radii, blending |
| Helix Angle | 35° | ± 1.0° | Optimized for chip evacuation |
| Core Diameter | 6.2 mm | — | High rigidity core |
| Number of Flutes | 5 | — | Finishing / semi-finishing |
| End Geometry | 0.030R Center Cutting | — | Plunge capable |
| Edge Preparation | Micro-honed with chipbreaker | — | Good (Ra 0.4-0.8 μm) |
4. Grade Details – Key Grade Characteristics
AlCrN High-Performance (TM) — TM grade utilizes an advanced nano-layered AlCrN/TiAlN coating system designed for high-speed machining and difficult-to-cut materials. The submicron carbide substrate delivers exceptional thermal stability and crater wear resistance.
| Property | Specification | Performance Impact |
|---|---|---|
| Coating Composition | AlCrN/TiAlN Nano-Layered PVD | Superior thermal barrier and chemical stability |
| Coating Color | Dark Graphite | Visual identification aid |
| Substrate Hardness | 93.2 HRA | High wear resistance and edge retention |
| Carbide Grain Size | 0.4 μm Submicron | High toughness with hardness balance |
| Max Operating Temp | 1,100°C | Prevents thermal cracking in dry/high-speed cuts |
| Max Workpiece Hardness | 55 HRC | Defines material application range |
| Fracture Toughness | Very High | Resists chipping in interrupted cuts |
| Oxidation Resistance | Superior up to 1,100°C | Extended tool life at elevated temperatures |
5. Grade Comparison Matrix
| Characteristic | TA Grade (Standard) | TM Grade (This Product) |
| Coating System | TiAlN Multi-Layer PVD | AlCrN/TiAlN Nano-Layered |
| Hardness | 92.0 HRA | 93.2 HRA |
| Max Workpiece Hardness | 45 HRC | 55 HRC |
| Cutting Speed (Steel) | 120-150 m/min | 140-180 m/min |
| Best Application | General purpose, cost-effective | High-speed, hardened materials |
| Thermal Stability | 900°C | 1,100°C |
Note: Both grades use the same ultra-fine carbide substrate. The primary difference is the coating architecture and resulting thermal/mechanical performance envelope.
6. Chipbreaker Profile
CB (Chipbreaker)
| Attribute | Specification |
|---|---|
| Flute Geometry | Variable pitch with micro-edge chipbreaker flutes |
| Chip Control | Superior - segmented chip formation |
| Vibration Damping | Reduced through harmonic pitch variation |
| Best Applications | Deep slotting, roughing, unstable setups, long overhangs |
| Feed Rate Capability | +15% vs standard |
| Surface Finish | Good (Ra 0.4-0.8 μm) |
| Coolant Requirement | Recommended - through-tool preferred |
7. Recommended Applications & Workpiece Materials
The SGS37845 with TM grade and 0.030R corner radius is optimized for the following material groups:
| Material Group | Rating | Machining Notes |
|---|---|---|
| Carbon Steel (≤30 HRC) | ★★★★★ | Excellent high-speed performance |
| Alloy Steel (30-45 HRC) | ★★★★★ | Outstanding tool life and finish |
| Stainless Steel (304/316) | ★★★★☆ | Very good; excellent crater resistance |
| Cast Iron (GG25/GG30) | ★★★★★ | Excellent at elevated speeds |
| Hardened Steel (45-55 HRC) | ★★★★☆ | Primary application; excellent results |
| Titanium (Ti-6Al-4V) | ★★★★☆ | Very good with adequate coolant |
| Inconel 718 | ★★★☆☆ | Good; reduce speed and increase feed |
8. Application Map by Operation
| Operation Type | Suitability | Guidance |
|---|---|---|
| Profiling | ★★★★★ | Versatile radius for general profiling tasks |
| Slotting | ★★★★☆ | Good for standard slotting operations |
| Roughing | ★★★☆☆ | Moderate roughing capability with CB geometry |
| Finishing | ★★★★★ | Excellent balance of finish and tool life |
| 3D Contouring | ★★★★☆ | Very good for medium-detail 3D work |
9. Recommended Cutting Conditions
Values shown for TM grade. Adjust by ±15% based on machine rigidity and setup stability. Use coolant unless specified otherwise.
| Workpiece Material | Vc (m/min) | fz (mm/tooth) | ap (axial) | ae (radial) |
|---|---|---|---|---|
| Carbon Steel (≤30 HRC) | 140-180 | 0.10-0.15 | 1.0-1.5D | 0.1-0.3D |
| Alloy Steel (30-45 HRC) | 120-160 | 0.08-0.12 | 0.8-1.2D | 0.08-0.25D |
| Stainless Steel (304/316) | 100-140 | 0.08-0.11 | 0.6-1.0D | 0.05-0.2D |
| Cast Iron (GG25/GG30) | 130-170 | 0.12-0.16 | 1.2-1.8D | 0.15-0.35D |
| Hardened Steel (45-55 HRC) | 60-90 | 0.04-0.08 | — | 0.03-0.15D |
| Titanium (Ti-6Al-4V) | 50-75 | 0.08-0.12 | 0.5-0.8D | 0.05-0.15D |
| Inconel 718 | 35-55 | 0.06-0.10 | 0.4-0.6D | 0.03-0.1D |
10. Operating Guidelines
- Speed & Feed: Start at lower end of recommended Vc range. Increase feed by 15% compared to standard geometry for optimal chip breaking.
- Coolant: Flood coolant or through-tool coolant strongly recommended. Minimum 6-8% emulsion concentration.
- Engagement: Maximum radial engagement (ae) 0.3×D for finishing, 0.6×D for roughing with CB geometry.
- Runout: Maintain TIR ≤ 0.01 mm at tool tip. Excessive runout accelerates uneven wear on chipbreaker edges.
- Ramping: Maximum ramp angle 2° for full flute engagement. Use helical entry preferred over straight plunge.
- Tool Life Indicator: Monitor flank wear on primary cutting edges. Regrind when VB = 0.15 mm or when surface finish degrades beyond Ra 0.8 μm.
- Vibration: CB variable-pitch design reduces chatter. If vibration occurs, reduce speed 10% and increase feed 5%.
11. Toolholder Compatibility
| Holder Type | Compatibility | Max Overhang | Notes |
|---|---|---|---|
| ER Collet (3/8" / 10 mm) | ★★★★★ | ≤ 5×D | Use precision collet (≤ 0.01 mm runout) |
| Hydraulic Chuck (10 mm) | ★★★★★ | ≤ 5×D | Best damping; recommended for finishing |
| Shrink Fit (10 mm) | ★★★★★ | ≤ 5×D | Maximum rigidity and transfer torque |
| Milling Chuck (10 mm) | ★★★★☆ | ≤ 5×D | Good for roughing; verify clamp force |
| Weldon Flat Holder | ★★★☆☆ | ≤ 5×D | Requires set screw; acceptable for roughing only |
12. Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS37845 |
| Product Name | Kyocera 3/8" ENDMILL 5FL 0.030R TM CB |
| Packaging | Individual plastic tube with foam insert, barcode label |
| Package Dimensions | 99 mm × 20 mm × 20 mm |
| Package Weight | 0.09 kg |
| Minimum Order Quantity | 1 piece |
| Warranty | Full manufacturer defect warranty (90 days from delivery) |
| Country of Manufacture | Japan |
13. Catalog Meta Data
| Field | Value |
|---|---|
| Catalog Series | SGS Solid Carbide Endmills |
| Product Category | Solid Carbide Endmill / 5-Flute |
| Tool Diameter Class | 3/8" (9.525 mm) |
| Flute Count | 5 |
| Grade Family | AlCrN High-Performance (TM) |
| Corner Radius Class | 0.030R |
| Chipbreaker Option | Yes (CB) |
| Primary Industry | General Engineering, Mold & Die, Aerospace, Automotive |
| Replacement Policy | Regrindable 2-3 times (subject to minimum diameter limit 9.0 mm) |
| Data Sheet | Available upon request from Kyotow.com technical support |
All specifications are subject to standard manufacturing tolerances. For critical applications, verify dimensions with incoming inspection. Kyocera and SGS are registered trademarks of Kyocera Corporation. Kyotow.com is an authorized distributor of genuine Kyocera cutting tools.
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
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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.
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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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