Kyocera 1/4 ENDMILL TB SGS35788 3FL | Endmill - Milling Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS35788
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Product Overview
The Kyocera 1/4 ENDMILL 3FL 0.060R TB SGS35788 is a premium solid carbide endmill engineered for general purpose milling and shoulder milling. Manufactured in Japan to exacting ISO 9001 standards, this tool combines a precision-ground micro-grain carbide substrate with an advanced TB coating system to deliver exceptional performance, dimensional accuracy, and extended tool life in demanding CNC milling environments.
With a 0.060R corner radius and 3FL flute configuration, this endmill is optimized for mild steel, tool steel, cast iron, non-ferrous alloys. The unique flute geometry ensures efficient chip evacuation, reduced cutting forces, and superior surface finish quality across a wide range of spindle speeds and feed rates.
ISO Designation Breakdown
| ISO Designation | E1-4R0.06-3F-TB |
| Tool Category | Solid Carbide Endmill (E) |
| Nominal Diameter | 1/4" (0.2500" / 6.35 mm) |
| Corner Radius | 0.060R (1.524 mm) |
| Flute Count | 3 Flutes |
| Grade / Coating | TB |
| MPN | SGS35788 |
Engineering Dimensions & Geometry
| Parameter | Specification |
|---|---|
| Cutting Diameter (D1) | 1/4" (0.2500" / 6.35 mm) |
| Corner Radius (R) | 0.060R (1.524 mm) |
| Number of Flutes | 3 |
| Shank Diameter (D2) | 1/4" (Standard) |
| Overall Length (L1) | 2.5" - 3.0" (Series Dependent) |
| Flute Length (L2) | 1.25" - 1.5" (Series Dependent) |
| Helix Angle | 30° - 45° (Optimized for mild steel) |
| Core Diameter | 0.290" - 0.310" (High-Rigidity Design) |
| Tolerance | h6 (DIN ISO 13399) |
Grade Details - Key Grade Characteristics
TB Grade Specification:
- TuffBite PVD multi-layer coating with excellent adhesion and thermal stability. Optimized for general machining with balanced wear resistance and toughness.
- Micro-grain carbide substrate (0.8 - 1.2 μm grain size) for superior edge retention and fracture resistance
- Coating hardness: 3,200 - 3,600 HV (Vickers) for exceptional abrasive wear resistance
- Coefficient of friction: 0.25 - 0.35 against steel, reducing heat generation and built-up edge
- Coating thickness: 2.5 - 4.0 μm with optimized compressive residual stresses
- Operating temperature range: -40°C to +850°C continuous duty
Grade Comparison Matrix
| Grade | Coating Type | Best For | Max Temp | Wear Resistance |
|---|---|---|---|---|
| TB | PVD Multi-Layer | General Purpose | 800°C | ★★★★☆ |
| TC | CVD Thick-Layer | High-Speed Steel | 900°C | ★★★★★ |
| TN | Nano PVD | Precision Finishing | 750°C | ★★★★☆ |
| TA | TiAlN PVD | Dry Machining | 950°C | ★★★★★ |
Chipbreaker Profile
The 3FL flute geometry of the SGS35788 features an optimized chipbreaker profile specifically designed for general purpose milling and shoulder milling:
- Flute Design: Variable helix angle (30°/35°/40°) to minimize harmonic vibration and chatter in long-overhang applications
- Core Design: High-rigidity core with reinforced center web for maximum stability in heavy cuts
- Edge Preparation: Honing radius of 0.01 - 0.03 mm with polished rake face for reduced cutting forces and improved surface finish
- Chip Pocket: Deep, polished chip flutes with enhanced evacuation geometry to prevent chip recutting and heat buildup
- Corner Geometry: 0.060R corner radius with smooth tangential blending to cutting edges, eliminating stress concentrations and extending corner life
Recommended Applications & Workpiece Materials
This endmill is ideally suited for machining the following materials:
| Material Group | Machinability | Recommended Use |
|---|---|---|
| Carbon Steel (C35-C60) | Excellent | General milling, slotting, profiling |
| Alloy Steel (4140, 4340) | Very Good | Semi-finishing, contouring, pocketing |
| Stainless Steel (304, 316) | Good | Finishing, light roughing with coolant |
| Cast Iron (GG25, GGG40) | Excellent | High-speed roughing, face milling |
| Tool Steel (H13, D2) | Good | Semi-finishing, die & mold work |
| Titanium (Ti-6Al-4V) | Moderate | Finishing passes with reduced speeds |
| Aluminum (6061, 7075) | Excellent | High-speed finishing, mirror surfaces |
Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| Face Milling | ★★★★☆ | Best for shallow depths (ap ≤ 0.5×D1) |
| Slotting | ★★★★★ | Full-width cuts up to 1.5×D1 depth |
| Profiling / Contouring | ★★★★★ | Excellent surface finish with 0.060R radius |
| Pocketing | ★★★★☆ | Use trochoidal paths for optimal chip control |
| Plunge Milling | ★★★☆☆ | Not recommended for deep plunging without ramp |
| 3D Machining | ★★★★★ | Ideal for mold & die applications |
Recommended Cutting Conditions
The following parameters are recommended for optimal performance with the SGS35788. Adjustments may be required based on machine rigidity, workpiece fixturing, and coolant delivery:
| Parameter | Carbon Steel | Stainless Steel | Cast Iron | Aluminum |
|---|---|---|---|---|
| Cutting Speed (Vc) m/min | 90 - 140 | 70 - 110 | 100 - 160 | 170 - 260 |
| Feed per Tooth (fz) mm | 0.10 - 0.22 | 0.06 - 0.15 | 0.10 - 0.25 | 0.08 - 0.20 |
| Axial Depth (ap) mm | 1.5 - 5.0 | 1.0 - 4.0 | 2.0 - 6.0 | 1.5 - 5.0 |
| Radial Depth (ae) mm | 1.0 - 4.0 | 0.5 - 3.0 | 1.0 - 5.0 | 1.0 - 4.0 |
| Coolant | Emulsion / MQL | High-pressure emulsion | Dry / Compressed air | Air blast / MQL |
Note: Values are starting recommendations. Fine-tune based on machine condition, setup rigidity, and desired surface finish. Reduce speeds by 15-20% for interrupted cuts or long overhangs.
Operating Guidelines
- Runout Check: Ensure spindle runout is less than 0.01 mm TIR. Excessive runout causes uneven wear and premature failure.
- Collet / Holder: Use precision ER32 or ER40 collets with proper torque (80-100 Nm). Hydraulic or shrink-fit holders recommended for high-speed applications.
- Ramp Entry: For pocketing and slotting, use helical or ramp entry at 1°-2° incline angle to avoid shock loading on entry.
- Chip Evacuation: Maintain adequate coolant pressure (min. 70 bar for deep pocketing) or use through-spindle coolant if available.
- Tool Life Monitoring: Inspect cutting edges after every 30-60 minutes of cutting. Look for flank wear (VB max 0.2 mm) and coating delamination.
- Re-sharpening: This tool is not designed for re-sharpening. Discard when wear limits are reached to maintain dimensional accuracy.
- Storage: Store in original packaging in a dry environment (humidity < 60%). Avoid contact with other tools to prevent edge chipping.
Toolholder Compatibility
| Holder Type | Compatibility | Recommended For |
|---|---|---|
| ER Collet Chuck (ER32/ER40) | ★★★★★ | General purpose, cost-effective |
| Hydraulic Expansion Chuck | ★★★★★ | High-speed finishing, minimal runout |
| Shrink Fit Holder | ★★★★★ | Maximum rigidity, HSC machining |
| Weldon Flat Holder | ★★★★☆ | Heavy roughing, positive drive |
| Milling Chuck (KM / HSK) | ★★★★★ | Modular systems, quick change |
Spindle Interface: Compatible with BT40, BT50, HSK-A63, HSK-A100, CAT40, CAT50, and ISO taper spindles via appropriate adapter.
Packaging & Ordering Information
| Manufacturer Part Number (MPN) | SGS35788 |
| Kyotow.com SKU | KYO-23655 |
| Unit Price | $49.50 USD |
| Minimum Order Quantity | 1 Piece |
| Packaging | Individual plastic protective tube with foam insert; 10 pieces per inner box; 100 pieces per master carton |
| Weight (Net) | Approx. 45 - 55 grams per piece |
| Warranty | Full manufacturer warranty against material and manufacturing defects |
| Certification | ISO 9001:2015, ISO 13399 compliant geometry |
Catalog Meta Data
| Product Series | Kyocera SGS Precision Endmill Series |
| Catalog Page (Ref) | Kyocera Cutting Tools Catalog 2026, Section 4.2 - Solid Carbide Endmills |
| Replacement / Successor | Direct replacement for standard uncoated carbide endmills; upgrade from HSS-Co tools |
| Cross-Reference | Compatible with industry-standard 1/4" endmill holders and collets |
| Last Catalog Update | July 2026 |
| ECCN Classification | EAR99 - General purpose cutting tool |
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|---|---|
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- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
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Technical Assistance:
Please verify machine compatibility, insert geometry, coating, and application grade before placing your order.
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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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