Kyocera 0.0350-3FL-0005R TA SGM08794 ENDMILL - CNC Milling

Product Overview

The Kyocera SGM08794 is a premium solid carbide endmill engineered for demanding CNC micro-milling operations. Featuring a 0.0350″ cutting diameter, 3FL flute design, and a precision-ground 0.005R corner radius, this tool delivers exceptional performance in ultra-high-precision micro-machining, fine contouring, and intricate detail work requiring minimal corner radii. Manufactured in Japan with TA-grade sub-micron carbide, the SGM08794 offers superior wear resistance, thermal stability, and edge integrity for extended tool life in high-speed micro-machining environments.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details – Key Grade Characteristics

The TA Grade is a sub-micron grain carbide substrate (grain size: 0.4 μm) combined with a nano-layer PVD coating optimized for high-speed micro-milling operations. Key characteristics include:

• Hardness: 93.0 HRA (1,750 HV30) – Exceptional wear resistance in continuous micro-cutting
• Transverse Rupture Strength: 4,000 MPa – High edge stability under intermittent micro-cuts
• Coating Composition: TiAlSiN-based nano-layer PVD coating with enhanced oxidation resistance up to 1,000°C
• Coating Thickness: 1.8 μm – Ultra-thin for maximum edge sharpness on micro tools
• Friction Coefficient: 0.30 – Reduced built-up edge and improved chip evacuation in micro-channels
• Thermal Conductivity: 55 W/m·K – Efficient heat dissipation from the micro cutting zone

Grade Comparison Matrix

Chipbreaker Profile

The SGM08794 features a precision-ground flute geometry optimized for 3FL flute micro endmills. The chipbreaker design ensures controlled chip formation and evacuation in micro-scale cutting operations:

• Flute Profile: Variable helix with 35° primary helix angle minimizes harmonic vibration at high RPM
• Core Design: Reinforced core (45% of cutter diameter) optimized for rigidity in micro-feature machining
• Edge Preparation: Precision-honed cutting edge (0.005 mm hone) enhances edge stability and prevents micro-chipping
• Corner Geometry: 0.005R radius with polished transition zones reduces stress concentration and extends corner life
• Flute Polishing: Mirror-finished flute surfaces (Ra 0.05 μm) prevent material adhesion and improve micro-chip flow

Recommended Applications & Workpiece Materials

This tool is optimized for ultra-high-precision micro-machining, fine contouring, and intricate detail work requiring minimal corner radii. Ideal workpiece materials include: Hardened steels (up to 55 HRC), stainless steels, titanium alloys, and precision non-ferrous components.

Application Map by Operation

Recommended Cutting Conditions

Parameters are provided as starting recommendations for micro-machining. Adjust based on machine rigidity, spindle runout, and coolant delivery.

Operating Guidelines

• Runout Check: Ensure tool runout does not exceed 0.002 mm (0.00008″) at the tool tip. Excessive runout is the primary cause of premature failure in micro endmills.
• Coolant Strategy: High-pressure micro-nozzle coolant or MQL (Minimum Quantity Lubrication) is recommended. Avoid flood coolant that may cause thermal shock on micro edges.
• Ramp Entry: Use helical ramp entry with a maximum ramp angle of 1° for micro-pocketing. Never plunge directly into solid material with micro endmills.
• Stepover Recommendation: For micro-finishing operations, maintain stepover (ae) between 3-10% of cutter diameter to achieve mirror surface finishes (Ra 0.2 μm or better).
• Chip Load Verification: Always verify actual chip load against calculated values. Insufficient chip load causes rubbing and coating failure; excessive chip load leads to catastrophic breakage in micro tools.
• Tool Life Indicator: Monitor flank wear (VB) under magnification. Replace tool when VB exceeds 0.05 mm for roughing or 0.02 mm for micro-finishing operations.

Toolholder Compatibility

Packaging & Ordering Information

• Packaging: Each tool is individually sealed in a nitrogen-purged blister pack with desiccant and anti-static foam insert to prevent oxidation and damage during storage.
• Labeling: Package includes barcode (Code 128), QR code linking to digital catalog, magnification-verified dimensional print, and batch certificate.
• Minimum Order Quantity: 1 piece (no MOQ for standard catalog items).
• Lead Time: In-stock items ship within 24-48 hours. Non-stock items: 4-6 weeks ex-factory Japan.
• Storage Conditions: Store in original packaging at 15-25°C with relative humidity below 50%. Avoid direct sunlight, vibration, and corrosive atmospheres.
• Batch Traceability: Each tool is laser-marked with batch number, manufacturing date, and inspection code for full traceability.

Catalog Meta Data

Disclaimer: Cutting parameters and recommendations are provided as general guidelines. Actual performance depends on machine condition, workpiece material consistency, coolant type, and operator skill. Always conduct test cuts when machining unfamiliar materials. Kyocera and Kyotow.com are not liable for tool failure resulting from improper application or operating conditions outside recommended ranges.