2-2.9mm 3xD Coolant Through Carbide Drill Bits carbide end milll
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BEYOND 2-2.9mm 3xD Coolant Through Carbide Drill Bits - HRC60 Hardness
Precision Micro-Drilling for Demanding Applications
BEYOND 3xD Coolant Through Hole Carbide Drill Bits in 2.0mm to 2.9mm diameters are engineered for high-performance micro-deep hole drilling in tough materials up to HRC60 and beyond. The innovative internal coolant channel design is critical at this small scale, effectively reducing heat buildup—the primary cause of tool failure—and ensuring efficient chip evacuation in deep-hole operations.
The robust 140° point angle provides excellent centering accuracy and minimizes walking and vibration, which is paramount when drilling small, precise holes. Made from premium micro-grain carbide, these drills offer exceptional wear resistance and durability, making them the ideal choice for the mold, electronics, and medical industries where precision is non-negotiable.
Key Features & Benefits
- Micro-Diameter Range (2.0mm - 2.9mm): Specifically designed for precision small hole drilling applications.
- 3x Diameter (3xD) Length: Provides the necessary reach for deep hole drilling where standard length drills are insufficient.
- Internal Coolant Through Holes: Delivers coolant directly to the cutting edge, reducing thermal stress, improving tool life, and enhancing chip evacuation in deep, small-diameter holes.
- HRC60+ Hardness Rating: Built to tackle hardened steels, alloy steels, and other difficult-to-machine materials.
- 140° Point Angle: Provides superior stability, reduces thrust force, and prevents walking for precise hole positioning.
- Premium Carbide Substrate: Ensures maximum rigidity, wear resistance, and overall longevity compared to HSS drills.
- Straight Shank Design: Guarantees secure and easy clamping in standard CNC tool holders and collets.
Technical Specifications
| Brand | BEYOND |
|---|---|
| Tool Type | Coolant Through Hole Twist Drill |
| Material | Micro-Grain Carbide |
| Suitable Hardness | Up to HRC60 and above |
| Diameter Range | 2.0 mm - 2.9 mm (Incremental sizes available) |
| Drill Length | 3x Diameter (3xD) |
| Point Angle | 140° |
| Shank Type | Straight Shank |
Typical Applications
These micro-diameter drills are perfect for use in:
- Precision Mold & Die Manufacturing
- Electronics and Connector Manufacturing
- Medical Device Components
- Small Precision Automotive Parts
- Watchmaking and Jewelry Manufacturing
- Drilling in Hardened Steel for EDM Pilot Holes
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.