Kyocera SGM08119 TA SGM08119 2FL Drill - Micro-Drilling
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM08119
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1. Product Overview
The Kyocera SGM08119 TA 2FL Drill is a premium solid carbide micro-drill engineered for high-precision CNC machining operations. With a diameter of 0.77 mm, this tool is specifically designed for applications demanding exceptional dimensional accuracy, superior surface finish, and reliable chip evacuation in micro-hole manufacturing.
Manufactured in Japan using Kyocera's advanced powder metallurgy and precision grinding technology, the SGM08119 delivers consistent performance across high-volume production environments. The optimized 2-flute geometry minimizes cutting forces while maximizing chip control, making it the preferred choice for aerospace, medical, automotive, and precision engineering sectors.
2. ISO Designation Breakdown
| ISO Designation | D0.77x4.3 |
| Tool Type | Solid Carbide Drill (2-Flute) |
| Grade Code | TA |
| Manufacturer Part Number | SGM08119 |
| Coolant Type | Through-Tool (Internal Coolant) |
3. Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Drill Diameter (D) | 0.77 mm | h5 (±0.004 mm) |
| Overall Length (L) | 37.7 mm | ±0.5 mm |
| Flute Length (Lf) | 4.3 mm | ±0.3 mm |
| Point Angle | 140° | ±2° |
| Helix Angle | 30° | ±1° |
| Shank Diameter | 3.0 mm | h6 |
| Number of Flutes | 2 | — |
4. Grade Details – Key Grade Characteristics
The TA grade carbide substrate is specifically developed for high-performance drilling applications requiring an optimal balance between hardness, toughness, and thermal stability.
| Characteristic | Specification |
|---|---|
| Carbide Substrate | Ultra-fine grain tungsten carbide |
| Coating Composition | AlTiN multi-layer PVD coating |
| Hardness (HRA) | 92.5 HRA |
| Transverse Rupture Strength | 3,800 MPa |
| Coating Hardness (HV) | 3,200 – 3,500 HV |
| Max Operating Temperature | 900°C (dry) / 1,100°C (with coolant) |
| Coating Thickness | 2.5 – 4.0 µm |
5. Grade Comparison Matrix
| Grade | Hardness | Toughness | Best For |
|---|---|---|---|
| TA | ★★★★☆ | ★★★★☆ | General precision drilling, steel, stainless steel |
| TB | ★★★★★ | ★★★☆☆ | Hardened steels, high-speed finishing |
| TC | ★★★☆☆ | ★★★★★ | Interrupted cuts, unstable conditions, tough materials |
| PR | ★★★★☆ | ★★★★☆ | Cast iron, non-ferrous, aluminum alloys |
6. Chipbreaker Profile
The SGM08119 features a Standard edge preparation optimized for reliable chip formation and evacuation in micro-drilling operations. The flute geometry incorporates a variable helix design that reduces harmonic vibration and improves surface integrity.
- Edge preparation: Standard hone with polished flank
- Flute form: Parabolic gash with enhanced chip pocket volume
- Margin width: 0.08 – 0.12 mm (narrow land for reduced friction)
- Back taper: 0.01 – 0.02 mm (prevents binding in deep holes)
- Surface finish: Ra 0.2 µm on flute surfaces for smooth chip flow
7. Recommended Applications & Workpiece Materials
Precision hole making in aerospace components, medical devices, and electronic housings.
Compatible Workpiece Materials:
- Carbon steel (C35-C60), Alloy steel (4140, 4340), Stainless steel (304, 316)
- Non-ferrous metals: Aluminum (6061, 7075), Brass (C360), Copper alloys
- Plastics & composites: PEEK, GFRP, CFRP (with adjusted speeds)
8. Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| Through-Hole Drilling | ★★★★★ Excellent | Optimal chip evacuation with through-coolant |
| Blind-Hole Drilling | ★★★★☆ Very Good | Reduce feed by 15% at bottom; use peck cycle |
| Cross-Hole Drilling | ★★★☆☆ Good | Reduce speed 20%; ensure rigid setup |
| Stack Drilling | ★★★★☆ Very Good | Clamp plates firmly; use minimum quantity lubrication |
| Enlarging / Reaming | ★★☆☆☆ Fair | Not recommended; use dedicated reamer for best results |
9. Recommended Cutting Conditions
| Material Group | Cutting Speed (Vc) m/min | Feed (f) mm/rev | Coolant |
|---|---|---|---|
| Carbon Steel (< 0.5% C) | 44 – 88 | 0.012 – 0.054 | Emulsion / Synthetic |
| Alloy Steel (HRC < 35) | 34 – 73 | 0.012 – 0.044 | Emulsion / MQL |
| Stainless Steel (Austenitic) | 24 – 63 | 0.012 – 0.039 | High-pressure coolant |
| Cast Iron (Gray / Ductile) | 54 – 98 | 0.017 – 0.059 | Dry / Compressed air |
| Aluminum Alloy | 74 – 128 | 0.022 – 0.064 | MQL / Air blast |
| Hardened Steel (HRC 45–55) | 14 – 34 | 0.012 – 0.027 | Oil / High-pressure emulsion |
Note: Values are starting recommendations. Adjust based on machine rigidity, workpiece clamping, and coolant pressure. For peck drilling, reduce feed by 20–30% during peck cycles.
10. Operating Guidelines
- Runout tolerance: Maintain spindle runout ≤ 0.01 mm (TIR) for optimal tool life and hole accuracy.
- Coolant pressure: For through-tool coolant, minimum 20 bar (290 psi) recommended; 70+ bar for deep-hole applications.
- Peck drilling: Use standard peck cycle (1.5–2×D peck depth) for holes deeper than 3×D. For 0.77 mm diameter, peck depth = 1.16–1.54 mm.
- Entry/exit: Use chamfer or pilot hole to prevent burr formation and drill wandering. Chamfer size: 0.1–0.2 mm at 45°.
- Tool change: Inspect cutting edges under 10× magnification after every 500–800 holes or at first sign of wear.
- Storage: Store in original packaging at 15–25°C with <60% relative humidity. Avoid contact between cutting edges.
11. Toolholder Compatibility
| Toolholder Type | Compatibility | Remarks |
|---|---|---|
| HSK-E32 Collet Chuck | Direct fit | Use ER11 or ER16 collet for 3 mm shank |
| Hydraulic Chuck (3 mm) | Direct fit | Best damping for micro-drilling; recommended for <1 mm drills |
| Shrink Fit Chuck | Direct fit | Superior runout < 0.003 mm; ideal for high-speed operation |
| Weldon Side-Lock | Not recommended | Risk of shank deformation and runout issues |
12. Packaging & Ordering Information
| Packaging Type | Individual plastic tube with protective cap |
| Quantity per Pack | 1 piece |
| Minimum Order Quantity | 1 piece |
| Manufacturer Warranty | Standard Kyocera tool warranty against manufacturing defects |
| Country of Origin | Japan |
| HS Code | 8207.50.00 (Interchangeable tools for drilling) |
13. Catalog Meta Data
| Catalog Series | SGM Standard Micro-Drill Series |
| Product Family | Solid Carbide Drills – 2 Flute, Through-Coolant |
| Replacement Status | Current – Active production |
| Cross Reference | Compatible with standard micro-drill holders; no direct equivalent required |
| Last Catalog Update | 2026-Q2 |
All technical data and recommendations are provided as general guidelines. Actual performance may vary based on machine condition, setup rigidity, coolant quality, and workpiece material consistency. For application-specific support, contact Kyocera technical service or your authorized Kyotow.com representative.
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