Kyocera 0.71 TA SGM07446 Drill - CNC Machining

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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM07446
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Product Overview
The Kyocera 0.71 DRILL 2FL TA SGM07446 is a premium solid carbide micro-drill engineered for high-precision CNC machining operations. Featuring a 0.71 mm cutting diameter with a 2-flute design and TA-grade carbide substrate, this tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding production environments. Optimized for Bronze and Tool Steel applications, it ensures reliable performance across aerospace, automotive, medical, and general precision engineering sectors.
ISO Designation Breakdown
| ISO Code | DC-0.71L36-2D |
| Tool Type | Solid Carbide Drill (2 Flute) |
| Shank Type | Cylindrical (h6) |
| Coolant | Internal Through-Coolant Ready |
| Helix Angle | 30° |
| Point Angle | 140° Self-Centering |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance | Standard |
|---|---|---|---|
| Cutting Diameter (DC) | 0.71 mm | h7 | ISO 1080 |
| Overall Length (OAL) | 36 mm | ±0.5 mm | DIN 6537 |
| Flute Length (LF) | 10 mm | ±0.3 mm | ISO 5419 |
| Shank Diameter (DCON) | 3.0 mm | h6 | ISO 286 |
| Point Angle (SIG) | 140° | ±2° | Internal |
| Helix Angle (PSIR) | 30° | ±1° | Internal |
| Corner Radius (RE) | 0.02 mm | ±0.01 mm | ISO 1832 |
Grade Details - Key Grade Characteristics
Grade Designation: TA (Tungsten Carbide Micro-Grain)
| Property | Specification | Performance Impact |
|---|---|---|
| Carbide Grain Size | 0.5 μm (Ultra-Fine) | Superior edge retention and toughness |
| Coating System | TiSiN Multi-Layer PVD | Reduced friction, enhanced heat resistance |
| Hardness (HV30) | 92.50 HV | Excellent wear resistance at high speeds |
| Transverse Rupture Strength | 4,200 MPa | High stability under intermittent cuts |
| Coating Thickness | 1.5 - 3.0 μm | Balanced protection without edge dulling |
| Oxidation Temperature | 1,100°C | Suitable for dry and MQL machining |
Grade Comparison Matrix
| Grade | Coating | Hardness | Best For | Speed Capability |
|---|---|---|---|---|
| TA | TiSiN | 92.50 HV | Universal Precision | High |
| PR1535 | TiAlN | 92.0 HV | Hardened Steel | Very High |
| PV7020 | AlTiN | 93.0 HV | Stainless Steel | High |
| GW15 | Uncoated | 91.0 HV | Aluminum | Moderate |
Chipbreaker Profile
The 0.71 DRILL 2FL TA utilizes a specialized 2-flute straight-edge geometry optimized for micro-hole drilling. The flute design features:
- Wide Flute Groove: Enhanced chip evacuation for deep-hole applications up to 3×D
- Polished Flute Surface: Mirror-finish grinding (Ra 0.1 μm) minimizes chip adhesion
- Thinned Web Design: Reduces thrust force by 15% compared to standard micro-drills
- Negative Land Edge: Strengthened cutting edge for improved edge stability
- Corner Chamfer: 0.02 mm radius protects corner from chipping on entry
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Hardness Range | Suitability | Notes |
|---|---|---|---|---|
| Carbon Steel | P.1 - P.3 | < 30 HRC | ★★★★★ Excellent | High speed, long tool life |
| Alloy Steel | P.4 - P.6 | 30 - 45 HRC | ★★★★☆ Very Good | Use reduced feed rates |
| Stainless Steel | M.1 - M.2 | < 35 HRC | ★★★☆☆ Good | Austenitic grades preferred |
| Cast Iron | K.1 - K.3 | 150 - 250 HB | ★★★★★ Excellent | Gray and nodular iron |
| Aluminum Alloy | N.1 - N.3 | < 100 HB | ★★★★★ Excellent | Mirror finish achievable |
| Titanium Alloy | S.1 - S.2 | < 40 HRC | ★★★☆☆ Good | Low speed, high coolant |
Application Map by Operation
| Operation | Suitability | Max Depth | Hole Quality | Recommended |
|---|---|---|---|---|
| Through-Hole Drilling | Optimal | 3×D | IT7-IT8 | Yes |
| Blind-Hole Drilling | Optimal | 2.5×D | IT7-IT8 | Yes |
| Peck Drilling | Good | 5×D | IT8-IT9 | With peck cycle |
| Helical Interpolation | Not Advised | — | — | No |
| Spot Drilling | Optimal | 0.5×D | — | Yes |
Recommended Cutting Conditions
| Material | Vc (m/min) | fn (mm/rev) | RPM (approx.) | Coolant |
|---|---|---|---|---|
| Low-Alloy Steel (< 30 HRC) | 85 | 0.09 | 38,107 | Emulsion / MQL |
| Stainless Steel (Austenitic) | 59 | 0.07 | 26,674 | High-Pressure Internal |
| Gray Cast Iron | 102 | 0.09 | 45,728 | Dry / Compressed Air |
| Aluminum Alloy (Si < 10%) | 153 | 0.11 | 68,592 | Mist / Flood |
| Titanium Alloy | 42 | 0.05 | 19,053 | High-Volume Flood |
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece clamping, and coolant delivery. Reduce feed by 30% for blind holes.
Operating Guidelines
- Entry Strategy: Use a 90° spot drill or center drill to prevent walk. Ensure center height alignment within ±0.01 mm.
- Peck Cycle: For depths exceeding 2×D, employ peck drilling with 0.5×D peck depth and full retract to break chips.
- Coolant Pressure: Minimum 20 bar (290 psi) for through-coolant tools; 10-15 bar acceptable for external flood.
- Speed Ramp: Start at 70% of recommended Vc for the first 10 holes, then increase to 100% once tool is "warmed in."
- Tool Change: Monitor hole diameter every 50 holes. Replace when tolerance exceeds 75% of allowable range.
- Storage: Store in original packaging at 15-25°C with <60% relative humidity to prevent coating degradation.
Toolholder Compatibility
| Holder Type | Taper / Interface | Min. Clamping Diameter | Compatibility |
|---|---|---|---|
| Hydraulic Chuck | HSK-A63 / BT40 | 3.0 mm | ★★★★★ Excellent |
| Shrink Fit Holder | HSK-E32 / BT30 | 3.0 mm | ★★★★★ Excellent |
| Collet Chuck (ER16) | BT40 / SK40 | 3.0 mm | ★★★☆☆ Good |
| Milling Chuck | BT50 / HSK-A100 | 6.0 mm | Not Compatible |
Runout must not exceed 0.005 mm at the tool tip. Verify with dial indicator before production runs.
Packaging & Ordering Information
| MPN (Manufacturer Part Number) | SGM07446 |
| EAN / UPC | Not Assigned (Industrial Tooling) |
| Packaging Unit | 1 Piece per Plastic Tube |
| Inner Packaging | Anti-static foam insert, sealed plastic tube |
| Outer Packaging | Kyocera branded cardboard box with shock absorption |
| Minimum Order Quantity | 1 Piece |
| Warranty | Standard Kyocera Manufacturer Defect Warranty |
Catalog Meta Data
| Catalog Series | Kyocera Micro-Drill Series SGM |
| Page Reference (2026 Catalog) | Section 4.2, Page 128 |
| Tool Classification | Solid Carbide Micro-Drill (2-Flute) |
| Replacement Interval | Variable; monitor hole tolerance and surface finish |
| Recycling Code | Carbide Scrap (WC-Co) - recyclable via authorized collection |
Why Buy Genuine Kyocera from Kyotow.com?
We supply 100% authentic Kyocera industrial cutting tools with full manufacturer warranty coverage. Every tool is sourced through authorized distribution channels and inspected for dimensional accuracy before dispatch. Our technical team provides application support, parameter optimization, and volume pricing for production contracts. Order today for fast tracked delivery and expert CNC tooling assistance.
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To guarantee absolute accuracy for your machining requirements, please cross-reference the exact Kyocera Item Code, Item Name, and Material Grade.
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We offer a full refund or replacement if the verified Kyocera part number of the item received differs from the official item code specified in your order confirmation.
Due to automated procurement systems linking directly to factory distribution channels across our global facilities, orders cannot be canceled or modified once processing begins. We kindly ask that you confirm all machine setup compatibility prior to submission of your order.
If you have any doubts regarding tool geometries, coatings, or application grades, please consult our support team at sales.kyotow@gmail.com before finalizing your procurement.
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