HRC55 Micro Carbide Drill Bits 0.7–0.89mm carbide end milll
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BEYOND Micro Diameter Solid Carbide Drill Bits (0.7–0.89mm) – HRC55 Nano Coating
Brand: BEYOND
Hardness: HRC55
Shank Diameter: 3mm (Fixed)
Coating: Nano Coating
Application: Precision Drilling
Suitable Materials: Stainless Steel, Mold Steel, Alloy Steel, Cast Iron, Spring Steel, Pre-hardened Steel
Machine Compatibility: Hand drills and drill presses are prohibited.
Product Features
- High-precision micro diameter design ranging from 0.7mm to 0.89mm for fine hole machining.
- Made of premium tungsten carbide with HRC55 hardness for excellent wear resistance and durability.
- Advanced nano coating ensures smooth chip removal, heat resistance, and extended tool life.
- 3mm fixed shank for consistent clamping and improved stability in CNC machines.
- Optimized geometry for precise micro drilling with minimal runout and excellent surface finish.
- Ideal for stainless steel, die steel, spring steel, alloy steel, and cast iron materials.
Size Specifications (0.7–0.89mm)
| Diameter (mm) | Flute Length (mm) | Shank Diameter (mm) | Total Length (mm) |
|---|---|---|---|
| 0.70 | 10 | 3 | 38 |
| 0.71 | 10 | 3 | 38 |
| 0.72 | 10 | 3 | 38 |
| 0.73 | 10 | 3 | 38 |
| 0.74 | 10 | 3 | 38 |
| 0.75 | 10 | 3 | 38 |
| 0.76 | 10 | 3 | 38 |
| 0.77 | 10 | 3 | 38 |
| 0.78 | 10 | 3 | 38 |
| 0.79 | 10 | 3 | 38 |
| 0.80 | 10 | 3 | 38 |
| 0.81 | 10 | 3 | 38 |
| 0.82 | 10 | 3 | 38 |
| 0.83 | 10 | 3 | 38 |
| 0.84 | 10 | 3 | 38 |
| 0.85 | 10 | 3 | 38 |
| 0.86 | 10 | 3 | 38 |
| 0.87 | 10 | 3 | 38 |
| 0.88 | 10 | 3 | 38 |
| 0.89 | 10 | 3 | 38 |
Recommended Usage
- Use with high-precision CNC machining centers or micro-drilling machines only.
- Ensure stable tool clamping and minimal vibration for consistent accuracy.
- Not suitable for hand drills or drill presses.
Keywords & Tags
micro carbide drill bit, carbide micro diameter drill 0.8mm, nano coated micro drill for CNC, BEYOND carbide drilling tools, solid carbide micro drill bits 0.7–0.89mm, carbide drill for stainless steel, precision micro hole drilling, tungsten carbide drill for mold steel, 3mm shank micro drill bit
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.