6-7.9mm 3xD Carbide Coolant Through Drills carbide end milll
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BEYOND 6-7.9mm 3xD Coolant Through Carbide Drill Bits
Heavy-Duty 3xD Coolant Through Drills for Industrial Applications
BEYOND 6-7.9mm 3xD coolant through carbide drill bits are engineered for robust performance in demanding industrial machining applications. The 3x diameter length provides optimal stability and reach for deep hole drilling in hard materials, making these drills ideal for heavy-duty manufacturing environments.
With advanced internal coolant technology, these drills efficiently deliver high-pressure coolant to the cutting edge, dramatically reducing thermal stress and ensuring superior chip evacuation. The premium micro-grain carbide construction, combined with the optimized 140° point angle, delivers exceptional accuracy and extended tool life in materials up to HRC60 hardness.
Key Features & Benefits
3xD Optimal Length Ratio
3x diameter length provides the perfect balance between drilling depth and tool rigidity for stable performance in hard materials.
6-7.9mm Industrial Range
Comprehensive size coverage from 6.0mm to 7.9mm with standard 0.1mm increments for versatile industrial applications.
Advanced Coolant Delivery
Internal through-tool coolant system reduces heat generation by up to 40% and ensures efficient chip removal in deep holes.
HRC60+ Material Capability
Specifically engineered to efficiently machine hardened steels, tool steels, and super alloys with maximum productivity.
140° Optimized Point Angle
Advanced point geometry ensures excellent centering accuracy, reduces thrust force, and minimizes drill walking.
Industrial-Grade Carbide
Premium micro-grain carbide substrate provides superior wear resistance and consistent performance in production environments.
Technical Specifications
| Brand | BEYOND |
|---|---|
| Tool Type | Coolant Through Hole Twist Drill |
| Material | Micro-Grain Carbide |
| Diameter Range | 6.0mm - 7.9mm (0.1mm increments) |
| Drill Length | 3x Diameter (3xD) |
| Hardness Capability | Up to HRC60+ |
| Point Angle | 140° |
| Coolant System | Internal Through-Tool Coolant |
| Shank Type | Straight Shank |
| Standard Coating | TiAlN |
| Tolerance | h8 |
Available Sizes (3xD Length)
6.0mm - 6.9mm Series
6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9mm
7.0mm - 7.9mm Series
7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9mm
Industrial Applications
Heavy Equipment Manufacturing
- Construction machinery components
- Mining equipment parts
- Agricultural machinery manufacturing
- Hydraulic cylinder blocks
Mold & Die Industry
- Large injection mold bases
- Die casting mold cooling systems
- Stamping die components
- Forging die manufacturing
Automotive & Aerospace
- Engine component drilling
- Transmission housing machining
- Landing gear components
- Structural frame drilling
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.