HRC65 8D Internal Coolant Solid Carbide Drill | 2.0–4.9mm carbide end milll
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND HRC65 8D Internal Coolant Solid Carbide Drill (2.0–4.9mm)
BEYOND HRC65 8D Solid Carbide Drills are designed for deep hole drilling up to 8×D with internal coolant holes to ensure excellent chip evacuation, reduced heat, and stable performance. Made of ultra-fine carbide substrate and advanced coating, they deliver outstanding wear resistance and long tool life — ideal for machining hardened steel, mold steel, alloy steel, and stainless steel.
Product Features
- Internal Coolant Design – improves chip evacuation and tool life during deep drilling.
- HRC65 coating – ensures superior hardness, heat resistance, and durability.
- 8D flute length – suitable for holes up to 8×D deep.
- High precision ground – excellent dimensional accuracy and surface finish.
- Straight shank design – easy to install on CNC machines and drilling centers.
Applications
Designed for high-precision drilling of materials such as:
- Hardened steel (up to HRC65)
- Alloy steel and tool steel
- Cast iron, stainless steel
- Titanium and nickel alloys
Available Sizes (2.0–4.9mm)
| Model | Flute Length (mm) | Total Length (mm) | Shank Diameter (mm) |
|---|---|---|---|
| D3.0 | 34 | 74 | 4 |
| D3.1 | 34 | 74 | 4 |
| D3.2 | 34 | 74 | 4 |
| D3.3 | 34 | 74 | 4 |
| D3.4 | 34 | 74 | 4 |
| D3.5 | 34 | 74 | 4 |
| D3.6 | 34 | 74 | 4 |
| D3.7 | 34 | 74 | 4 |
| D3.8 | 45 | 85 | 4 |
| D3.9 | 45 | 85 | 4 |
| D4.0 | 45 | 85 | 4 |
| D4.1 | 45 | 85 | 6 |
| D4.2 | 45 | 85 | 6 |
| D4.3 | 45 | 85 | 6 |
| D4.4 | 45 | 85 | 6 |
| D4.5 | 45 | 85 | 6 |
| D4.6 | 45 | 85 | 6 |
| D4.7 | 45 | 85 | 6 |
| D4.8 | 57 | 97 | 6 |
| D4.9 | 57 | 97 | 6 |
Advantages of BEYOND HRC65 8D Drills
- High-performance drilling with stable accuracy for deep holes.
- Excellent surface quality and hole straightness.
- Reduced cutting resistance for longer tool life.
- Consistent performance on automated CNC machining lines.
Why Choose BEYOND
BEYOND specializes in premium carbide cutting tools with precision engineering and strict quality control. Each HRC65 drill is produced to guarantee consistent performance and long-lasting reliability, helping you achieve high-efficiency deep hole machining.
Keywords: HRC65 8D carbide drill, internal coolant carbide drill 2.0–4.9mm, deep hole solid carbide drill, 8xd coolant-through carbide drill, CNC drill bit for hardened steel, BEYOND carbide drills
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.