| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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Multi-Material Versatility
Designed to drill through tough materials such as stainless steel, alloy steel, cast iron, and other challenging metals, this M35 cobalt drill set offers exceptional adaptability for a wide range of industrial and construction applications.
Precision Performance
Engineered with sharp cutting edges and balanced flute geometry, each drill bit ensures smooth and accurate drilling with minimal vibration. Ideal for demanding tasks that require precision and consistent results, especially during repetitive drilling.
Enhanced Durability through Heat Treatment
Made from M35 high-speed steel with cobalt infusion, these drill bits undergo advanced heat treatment processes to increase hardness, wear resistance, and overall durability, even in high-temperature and high-load conditions.
Multi-Task Functionality
This versatile set is perfect for tasks such as electrical installation, metalworking, construction, and general-purpose drilling. Its ability to handle a variety of materials and applications reduces the need to switch between tools, improving workflow and productivity.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
Razor-Sharp Cutting Edge
Made from M35 high-speed steel with cobalt alloy, these drill bits provide fast, efficient penetration into tough materials like stainless steel and hardened alloys. The design minimizes resistance and reduces edge wear, ensuring excellent performance and long-lasting sharpness.
Anti-Slip Ground Tip
Each drill bit features a fully ground tip for precise positioning and stable entry into workpieces. This minimizes bit walking, making them ideal for high-speed or punchdown drilling tasks that demand consistent accuracy and reliability.
Optimized Chip Evacuation
The advanced spiral flute geometry improves chip removal, reducing friction-induced heat buildup and preventing material clogging. This design ensures smooth, continuous drilling, even in high-demand environments, without interruptions.
Corrosion-Resistant Finish
The polished finish not only enhances the drill bit's appearance but also provides excellent rust resistance, particularly in high-humidity or industrial environments. This protective finish helps prolong tool life and maintain consistent performance.
Ergonomic, Balanced Design
Crafted with a lightweight, balanced structure, these drill bits offer improved handling and greater control. This ergonomic design reduces operator fatigue during extended drilling sessions, making them ideal for a variety of professional applications.
Available Sizes:
| Specification | Cutting Diameter | Overall length | Blade length |
| 3.5 | 39mm | 70mm | 4mm |
Superior Wear Resistance & Heat Tolerance
Crafted from M35 cobalt high-speed steel, these drill bits are designed to retain their hardness and sharpness even under high-temperature and high-friction drilling conditions. This ensures long-lasting performance when drilling through tough metals, providing exceptional reliability in demanding tasks.
Versatile Drilling Performance
These drill bits are perfect for drilling through materials like stainless steel, hardened alloys, carbon steel, cast iron, and other difficult-to-machine metals. Their versatility makes them ideal for a broad range of industrial and workshop applications, from precision fabrication to heavy-duty metalworking.
Trusted Multi-Purpose Solution
Whether you are a professional or a DIY enthusiast, this set delivers consistent, clean, and efficient results across various tasks. Perfect for metal fabrication, construction, maintenance, and installation, these drill bits are a reliable tool for both large-scale projects and smaller, detailed jobs.
Advanced Manufacturing Capabilities
CNC Precision Grinding
This process ensures consistently sharp flute geometry and tip angles, enabling smooth, accurate drilling even in high-speed, repetitive conditions. It results in precise performance and reduces vibrations, providing better control and accuracy during use.
Vacuum Heat Treatment
This advanced heat treatment enhances both the surface hardness and internal toughness of M35 cobalt drill bits, extending their service life even in demanding applications. It helps maintain cutting performance over time, ensuring reliability.
Ultra-Fine Polishing
Polishing reduces friction, minimizes chip adhesion, and improves heat dissipation. This results in smoother operation, protects the workpiece surface, and ensures cleaner, more efficient drilling, especially under high-load conditions.
Refined Metallurgy & Material Purity
EAF + LF + VD + RS ESR Technology
Using advanced steelmaking techniques, we produce M35 cobalt steel with minimal internal impurities. This high-toughness steel improves the reliability of the drill bits under both thermal and mechanical stress, ensuring longer-lasting performance.
Integrated Thermal Optimization
Quenching + Cryogenic Treatment + Tempering
Our multi-step heat treatment process optimizes the hardness of the M35 cobalt drill bits (up to HRC 67) while preserving structural integrity and crack resistance. This makes them ideal for tough, high-load metal drilling tasks.
RS ESR Advanced Edge Enhancement
Rapid Solidification ESR
This process refines the distribution of carbide and cobalt particles, strengthening the cutting edge. This improvement enhances the drill bit's ability to resist heat softening and wear, particularly useful during deep or high-speed drilling applications.
Customizable Engineering Options
M35-Centric Configuration
While M2 and M42 are available, this drill set prioritizes M35 steel for its superior wear resistance, especially when drilling through stainless steel and high-strength alloys, providing extended tool life.
Tailored Geometry & Coatings
Custom options, such as flute lengths, helix angles, and advanced PVD coatings (TiN, TiAlN, TiCN), are available to improve durability, enhance chip evacuation, or optimize performance for specific materials or applications.
Key Design Adaptations for M35 Twist Drills
High-Efficiency Flute Design
The design of the flute ensures fast chip removal and minimal heat buildup, making these bits ideal for drilling dense, heat-sensitive materials like stainless steel, ensuring smooth and continuous drilling.
Optimized Cutting Angles
Precision-engineered tip and helix angles maximize cutting force and reduce wear on the bit, improving drilling speed and accuracy while extending the tool's lifespan.
Application-Tailored Coatings
These M35 twist drills are compatible with advanced surface coatings like TiAlN (for heat resistance) and TiCN (for wear reduction). These coatings provide extended tool life, especially in demanding environments requiring high-performance drilling.
Q1: What is the advantage of using M35 cobalt over regular high-speed steel (HSS)?
A: M35 cobalt alloy contains 5% cobalt, which provides superior heat resistance, wear resistance, and edge retention. This makes it ideal for drilling tough materials like stainless steel, hardened alloys, and other high-strength metals, especially under high-speed or high-pressure conditions.
Q2: What materials can these M35 cobalt twist drills handle?
A: These drill bits are designed to handle tough materials including:
Stainless steel
Alloy steel
Cast iron
Carbon steel
Additionally, they perform well on aluminum, plastics, and wood, making them versatile in multi-material job environments.
Q3: Can I use these drill bits for high-speed drilling?
A: Yes, M35 cobalt drill bits are perfect for high-speed drilling. The cobalt content combined with high-speed steel ensures the bits maintain their sharpness and perform reliably even at high rotational speeds.
Q4: What sizes are available for these drill bits?
A: Our M35 cobalt drill bits are available in sizes ranging from 1mm to 13mm, in 1mm increments. We also offer custom sizes and can provide fractional, metric, or letter sizes upon request to meet your specific needs.
Q5: Can I customize the drill bits for specific tasks?
A: Yes, customization options are available, including:
Custom flute lengths
Specific helix angles
PVD coatings (such as TiN, TiAlN, TiCN) for enhanced durability and performance in specific materials
Just provide your requirements, and we can tailor the drill bits to suit your specific tasks.
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