8.0-9.9mm HRC60 Internal Coolant Holes 5D carbide end milll
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BEYOND HRC60 Internal Coolant Holes 5D Carbide Drills (8.0-9.9mm) - Industrial-Grade Performance with Advanced Cooling
Experience superior drilling performance with the BEYOND Internal Coolant Holes 5D series in the 8.0-9.9mm range. Engineered with precision internal coolant holes technology and 140° point angle, these HRC60 carbide drills deliver exceptional efficiency in demanding industrial drilling applications. The optimized coolant system ensures maximum cooling and chip evacuation for extended tool life in continuous production environments.
Key Features & Benefits:
- High-Efficiency Internal Coolant Holes: Optimized coolant channel design with enhanced flow capacity ensures maximum cooling efficiency, reducing heat buildup by up to 70% in continuous drilling operations.
- Advanced 140° Point Angle: Wide point geometry reduces thrust force by 65-75%, ensures perfect centering accuracy, and eliminates drill walking in industrial applications.
- Extended 5xD Flute Length: Superior 5:1 depth-to-diameter ratio enables drilling deep holes up to 49.5mm, ideal for complex industrial components and deep cavity applications.
- HRC60 Ultra-Hard Tungsten Carbide: Maximum wear resistance and thermal stability maintain cutting performance through extended production runs in abrasive and hard materials.
- Reinforced Core Structure: Enhanced web thickness and specialized flute design provide maximum torsional strength while maintaining efficient coolant flow throughout deep drilling operations.
- Optimized Chip Evacuation: Combined effect of internal coolant holes and precision flute geometry ensures efficient chip removal, preventing chip packing in deep holes.
Product Specifications:
| Brand | BEYOND |
| Material | Micro-Grain Tungsten Carbide (HRC60 Hardness) |
| Point Angle | 140° (Optimized for Industrial Applications) |
| Flute Length | 5 x Diameter (5xD) |
| Coolant System | Internal Coolant Holes (High-Flow Through-Tool) |
| Shank Type | Straight Shank (Coolant Through Holes) |
| Diameter Range | 8.0mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm, 9.0mm, 9.1mm, 9.2mm, 9.3mm, 9.4mm, 9.5mm, 9.6mm, 9.7mm, 9.8mm, 9.9mm |
| Recommended Coolant Pressure | 20-40 bar (Minimum 15 bar required) |
| Max Drilling Depth | 40-49.5mm (Depending on diameter) |
Technical Cutting Parameters:
Optimized for industrial internal coolant holes applications
| Material Type | Cutting Speed (RPM) | Feed Rate (mm/rev) | Coolant Pressure |
|---|---|---|---|
| Stainless Steel | 2,000 - 3,800 | 0.12 - 0.25 | 25-40 bar |
| Alloy Steel | 2,200 - 4,200 | 0.15 - 0.30 | 20-35 bar |
| Titanium Alloys | 1,500 - 3,000 | 0.08 - 0.18 | 30-40 bar |
| Tool Steels | 1,800 - 3,500 | 0.10 - 0.22 | 25-35 bar |
Industrial Application Tips: Use high-pressure coolant systems with minimum 15 bar pressure. Implement peck drilling cycles for depths exceeding 3xD. Ensure rigid tool holding with precision hydraulic chucks. Monitor coolant temperature and maintain proper concentration. Regularly inspect coolant holes for blockage and tool wear patterns.
Performance Advantages:
Extended Tool Life
Internal coolant holes significantly reduce cutting temperature, extending tool life by 3-4x in continuous industrial operations compared to conventional drills.
Enhanced Productivity
Superior chip evacuation allows for higher feed rates and reduced cycle times, increasing overall production efficiency in industrial applications.
Exceptional Hole Quality
Continuous high-pressure coolant flow ensures excellent surface finish and dimensional accuracy in deep hole applications.
Reduced Operating Costs
Longer tool life and reliable performance minimize tool changes and maintenance requirements, reducing overall production costs.
Industrial Applications:
- Heavy Equipment Manufacturing: Construction machinery components, agricultural equipment parts, and mining machinery components
- Automotive Industry: Engine blocks, transmission cases, axle components, and heavy-duty brake systems
- Energy Sector: Turbine components, generator parts, valve bodies, and power transmission equipment
- Aerospace Manufacturing: Landing gear components, structural frames, engine mounts, and hydraulic system parts
- Mold & Die Industry: Large mold bases, die casting molds, and injection molding tools with deep cooling channels
- General Heavy Engineering: Hydraulic cylinders, press frames, machine tool components, and industrial machinery
Optimized Material Compatibility:
- Stainless Steels: 304, 316, 316L, 17-4PH, 15-5PH, 420, 430, 440C
- Alloy Steels: 4140, 4340, 4130, 4140H, 4340M, 300M
- Tool Steels: P20, H13, D2, A2, S7, O1 (up to 48 HRC)
- Titanium Alloys: Grade 2, Grade 5 (6AL-4V), Grade 9, Grade 23
- High-Temp Alloys: Inconel 718, 625; Hastelloy C276; Waspaloy
- Cast Materials: Ductile iron, gray iron, and steel castings
Recommended Setup Requirements:
- Industrial CNC Machining Centers with Through-Spindle Coolant
- High-Pressure Coolant Systems (20-40 bar capability)
- Precision Hydraulic or Shrink-Fit Tool Holders
- Coolant Filtration System (25 micron or better)
- Rigid Machine Construction with High Torque Spindle
- Proper Workholding with Maximum Clamping Force
Why BEYOND 8-9.9mm Internal Coolant Holes Drills Excel in Industrial Applications:
The BEYOND 8.0-9.9mm Internal Coolant Holes 5D series represents advanced drilling technology for industrial applications. Our proprietary manufacturing process ensures perfect coolant holes geometry with optimized flow characteristics for maximum cooling efficiency. The combination of HRC60 substrate, 140° point angle, and precision internal coolant holes delivers unmatched performance in the most demanding materials and applications. Each drill undergoes rigorous testing for coolant flow, straightness, and cutting performance, ensuring reliable operation in your most critical industrial production applications.
BEYOND Tools – Industrial Performance with Advanced Cooling Technology.
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.