2.0-2.95mm Internal Coolant Holes HRC60 5D carbide end milll
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BEYOND HRC60 Internal Coolant Holes 5D Carbide Micro Drills (2.0-2.95mm) - Precision Cooling for Micro Drilling Applications
Experience breakthrough performance in micro drilling with the BEYOND Internal Coolant Holes 5D series. Featuring advanced through-tool coolant holes technology in a compact 2.0-2.95mm diameter range, these HRC60 carbide micro drills deliver exceptional precision and tool life. The integrated coolant holes direct high-pressure coolant directly to the cutting edge, enabling efficient deep hole drilling in challenging materials where heat buildup and chip evacuation are critical concerns.
Key Features & Benefits:
- Micro Internal Coolant Holes: Precision-engineered coolant holes system designed for small diameters, providing effective cooling and chip evacuation in micro drilling applications.
- Optimized 140° Point Angle: Wide point geometry reduces thrust force by 50-60%, ensures perfect centering, and prevents drill walking in precision applications.
- Extended 5xD Flute Length: Exceptional 5:1 depth-to-diameter ratio enables drilling deep micro holes up to 14.75mm, perfect for complex components and deep cavities.
- HRC60 Ultra-Hard Micro-Grain Carbide: Superior wear resistance and rigidity maintain dimensional accuracy in extended micro drilling operations.
- Precision Coolant Holes Design: Specially positioned coolant holes ensure optimal coolant flow to the cutting edges for maximum cooling efficiency.
- Enhanced Surface Treatment: Special coating reduces friction and prevents material adhesion in sticky materials like aluminum and stainless steel.
Product Specifications:
| Brand | BEYOND |
| Material | Micro-Grain Tungsten Carbide (HRC60 Hardness) |
| Point Angle | 140° (Optimized for Micro Drilling) |
| Flute Length | 5 x Diameter (5xD) |
| Coolant System | Internal Coolant Holes (Through-Tool) |
| Shank Type | Straight Shank (Coolant Through Holes) |
| Diameter Range | 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 2.95mm |
| Recommended Coolant Pressure | 15-25 bar (Minimum 12 bar required) |
Technical Cutting Parameters for Micro Drilling:
Optimized for internal coolant holes applications in precision materials
| Material Type | Cutting Speed (RPM) | Feed Rate (mm/rev) | Coolant Pressure |
|---|---|---|---|
| Stainless Steel | 8,000 - 12,000 | 0.008 - 0.02 | 18-25 bar |
| Titanium Alloys | 6,000 - 10,000 | 0.006 - 0.015 | 20-25 bar |
| Aluminum Alloys | 12,000 - 18,000 | 0.015 - 0.03 | 15-20 bar |
| Tool Steels | 7,000 - 11,000 | 0.007 - 0.018 | 20-25 bar |
Micro Drilling Application Tips: Use high-precision collets with maximum grip strength. Implement peck drilling cycles with 0.5-1.0mm peck depth. Ensure coolant system is perfectly clean - use filters below 10 microns. Maintain consistent coolant pressure throughout operation. Regularly inspect coolant holes for blockage and tool runout - maximum 0.005mm recommended.
Micro Drilling Advantages:
Extended Micro Tool Life
Internal coolant holes prevent heat buildup in small diameters, significantly extending tool life in continuous micro drilling operations.
Superior Hole Quality
Continuous coolant flow through precision holes ensures excellent surface finish and dimensional accuracy in micro hole applications.
Effective Chip Evacuation
High-pressure coolant through internal holes effectively removes micro chips from deep holes, preventing clogging and breakage.
Optimized Coolant Delivery
Precisely positioned coolant holes deliver coolant exactly where needed for maximum cooling efficiency at the cutting edge.
Precision Applications:
- Medical Device Manufacturing: Surgical instrument holes, implant fixation points, and micro fluid channels
- Aerospace Components: Fuel injection nozzles, sensor mounting holes, and lightweight structural holes
- Electronics Industry: Heat sink mounting holes, connector pin holes, and micro component assembly
- Watch & Jewelry Making: Precision timepiece components, jewelry settings, and micro mechanical parts
- Mold & Die Industry: Micro ejector pin holes, vent holes, and cooling channels in small molds
- Automotive Electronics: Sensor housings, connector blocks, and micro hydraulic components
Recommended Setup Requirements:
- High-Speed CNC Machining Centers (20,000+ RPM capability)
- Through-Spindle Coolant Systems with Internal Coolant Holes (15-25 bar pressure)
- Precision Collet Chucks with Coolant Seals (Maximum 0.005mm runout)
- Micro Filtration Systems (5-10 micron filters)
- High-Precision Tool Presetters
- Rigid Machine Construction
Why BEYOND Internal Coolant Holes Micro Drills Excel:
The BEYOND 2.0-2.95mm Internal Coolant Holes 5D series represents the pinnacle of micro drilling technology. Our proprietary manufacturing process ensures perfect coolant holes geometry in these small diameters, providing reliable cooling where it matters most. The combination of HRC60 substrate, 140° point angle, and advanced internal coolant holes delivers unprecedented performance in precision applications. Each micro drill undergoes rigorous testing for coolant holes flow, straightness, and cutting performance, ensuring reliable operation in your most critical micro drilling applications.
BEYOND Tools – Precision Cooling Holes for Micro Manufacturing Excellence.
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.