7.0-8.9mm HRC60 5D Carbide Drill Bit carbide end milll
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND HRC60 5D Carbide Drill Bits (7.0-8.9mm) - Heavy-Duty Deep Hole Drilling Excellence
Tackle the most demanding deep hole drilling challenges with the BEYOND 7.0-8.9mm 5D series. Engineered with an advanced 140° point angle and exceptional 5x diameter flute length, these industrial-grade HRC60 carbide drills deliver uncompromising performance in deep cavity operations. Ideal for heavy machinery, hydraulic systems, and large mold manufacturing where extended reach and precision drilling are critical.
Key Features & Benefits:
- Industrial 5xD Flute Length: Superior 5:1 depth-to-diameter ratio enables drilling deep cavities up to 44.5mm, providing exceptional reach for complex industrial components and eliminating the need for specialized deep-hole equipment.
- Optimized 140° Point Angle: Advanced point geometry reduces thrust force by 55-65%, ensures perfect centering, and prevents walking on uneven or hardened surfaces.
- HRC60 Ultra-Hard Tungsten Carbide: Maximum wear resistance and structural integrity maintain dimensional accuracy through extended deep-hole operations in the most abrasive materials.
- Reinforced Core Construction: Enhanced web thickness and optimized flute geometry deliver maximum torsional strength, minimizing deflection and breakage risk in demanding deep-hole applications.
- Precision Ground Flute Technology: Specialized helix angle and polished flute surfaces ensure superior chip evacuation, preventing chip packing and tool failure during extended reach drilling.
Product Specifications:
| Brand | BEYOND |
| Material | Micro-Grain Tungsten Carbide (HRC60 Hardness) |
| Point Angle | 140° (Optimized for Deep Hole Drilling) |
| Flute Length | 5 x Diameter (5xD) |
| Shank Type | Straight Shank (Fixed Shank) |
| Diameter Range | 7.0mm, 7.1mm, 7.2mm, 7.3mm, 7.4mm, 7.5mm, 7.6mm, 7.7mm, 7.8mm, 7.9mm, 8.0mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm |
Technical Cutting Data Reference:
Optimized for deep hole drilling in stainless steel, titanium, and high-temperature alloys.
| Drill Diameter (mm) | Recommended Speed (RPM) | Feed Rate (mm/rev) | Max Drilling Depth |
|---|---|---|---|
| 7.0 - 7.5 | 2,000 - 3,500 | 0.07 - 0.12 | 35-37.5mm |
| 7.6 - 8.2 | 1,800 - 3,000 | 0.08 - 0.14 | 38-41mm |
| 8.3 - 8.9 | 1,600 - 2,800 | 0.09 - 0.16 | 41.5-44.5mm |
Industrial Deep Hole Drilling Tip: Implement peck drilling cycles (G83) with retractions every 1-1.5x diameter for optimal chip control. Maintain high-pressure coolant flow (minimum 20 bar) through the tool. Reduce feed rates by 20-25% when drilling beyond 3xD depth. Ensure rigid tool holding with precision collets to minimize vibration and deflection.
Industrial Applications:
- Heavy Machinery Manufacturing: Deep hydraulic passages, mounting holes, and structural components in machine frames
- Mold & Die Industry: Extended cooling channels, ejector systems, and vent holes in large mold bases
- Hydraulic Systems: Manifold blocks, valve bodies, and cylinder components with deep porting
- Aerospace Components: Structural lightening holes, fuel system passages, and landing gear components
- Energy Sector: Turbine components, valve bodies, and heat exchanger manufacturing
Optimized Material Compatibility:
- Stainless Steels: 304, 316, 316L, 17-4PH, 15-5PH, 420, 440C
- Tool & Die Steels: P20, H13, D2, A2, S7, O1 (up to 52 HRC)
- Titanium Alloys: Grade 2, Grade 5 (6AL-4V), Grade 9, Grade 23
- High-Temperature Alloys: Inconel 718, 625; Hastelloy C276, X; Waspaloy
- Alloy Steels: 4140, 4340, 4130, 4340M (annealed and pre-hardened to 45 HRC)
Recommended For Use In:
- Heavy-Duty CNC Machining Centers
- Deep Hole Drilling Machines
- Large Mold Making CNC Equipment
- Aerospace Manufacturing Facilities
- Hydraulic Component Production Lines
- General Heavy Engineering Workshops
Why BEYOND 7-8.9mm 5D Series Delivers Superior Performance:
The BEYOND 7.0-8.9mm 5D series represents the pinnacle of deep hole drilling technology for industrial applications. Our 140° point angle ensures exceptional stability and reduced thrust forces, while the 5xD length provides unmatched reach for complex industrial components. Each drill undergoes comprehensive straightness testing and quality control to maintain precision throughout its extended length, giving manufacturers the capability to achieve superior results in the most challenging deep-hole applications with enhanced productivity and reliability.
BEYOND Tools – Engineering Solutions for Industrial Deep Hole Challenges.
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.