| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | GB/T |
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Adaptable to Multiple Metals
Purpose-built to handle tough materials such as stainless steel, alloy steel, and cast iron, this M35 cobalt drill set offers dependable performance across demanding industrial and construction environments.
Precision-Crafted for Stability
Each bit is CNC-ground with refined flute geometry and sharp cutting edges, ensuring low-vibration, smooth drilling with high dimensional accuracy-perfect for repetitive or production-line use.
Heat-Treated for Maximum Durability
Constructed from M35 high-speed steel with cobalt alloy, and enhanced by vacuum heat treatment, the bits offer superior hardness and long-term wear resistance under high-load conditions.
Ready for Versatile Applications
Ideal for use in electrical installation, machinery repair, fabrication, and workshop tasks. Reduces the need for multiple tool types, improving workflow efficiency.
Custom Engineering Available
Supports custom specifications such as flute length, helix angle, point geometry, and PVD coatings (e.g., TiN, TiAlN), allowing tailored solutions for material-specific or high-performance applications.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
Industrial-Grade Cutting Edge
Made from M35 cobalt high-speed steel, each drill bit features an ultra-sharp edge for effortless penetration into hard metals like stainless steel and alloy steel-ensuring extended edge retention under continuous-use conditions.
Precision-Ground Tip for Accurate Starts
The fully ground, anti-slip tip ensures exact positioning and clean entry, minimizing skidding or walking during high-speed or vertical drilling, crucial for precision-driven industrial applications.
Optimized Flute Design for Chip Control
Engineered spiral grooves provide reliable chip evacuation and reduced friction buildup, helping maintain cooler cutting temperatures and uninterrupted drilling in long-cycle operations.
Protective Polished Coating
The corrosion-resistant surface finish adds durability in harsh environments, making the set suitable for high-humidity workshops, outdoor construction, and metal fabrication settings.
Balanced & Customizable Design
The ergonomically designed bits feature even weight distribution for better handling and reduced fatigue. Custom options (flute length, helix angle, coatings) are available to meet specialized production or workshop requirements
Available Sizes:
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Specification
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Cutting Diameter
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Overall length
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Blade length
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3
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33mm
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61mm
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3mm
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1. Engineered for Durability in Industrial Environments
Made from M35 cobalt high-speed steel, these drill bits maintain hardness and sharpness even under high-speed, high-temperature conditions-ideal for prolonged use in factory, workshop, or on-site operations.
2. Multi-Material Drilling Versatility
Capable of cutting through tough materials such as stainless steel, hardened alloys, cast iron, and carbon steel, this set is built for complex and heavy-duty machining needs across industries.
3. Reliable Results Across Applications
Whether used in metal fabrication, assembly, repair, or equipment installation, this set delivers consistent, clean drilling with minimal bit wear-perfect for both professional technicians and skilled DIY users.
4. Tailored to Fit Your Workflow
Available in customizable sizes, flute geometries, helix angles, and surface coatings (TiN, TiAlN, etc.), ensuring each bit matches the specific requirements of your production or tool inventory.
Q1: What materials and coatings are available for the M35 drill bits?
Materials: Primarily M35 cobalt high-speed steel for superior wear resistance and thermal performance. Optional upgrades include M2, M42, and PM-HSS depending on machining needs.
Coatings:
TiN - General-purpose wear resistance
TiAlN - Ideal for high-temperature drilling environments
TiCN - Maximizes surface hardness for tough applications
Uncoated versions available for budget or custom usage.
Note: Coatings extend drill life significantly, especially for stainless steel, titanium, or heat-resistant alloys.
Q2: What causes premature wear or breakage in these drill bits?
Operational Causes:
Excessive feed pressure
Inadequate cooling
Dry drilling without cutting fluid
Selection Issues:
Using standard HSS instead of M35 for hard or alloy materials
Lack of coating on drills used for demanding applications
Support:
We offer technical guidance and will review warranty claims due to manufacturing defects (not misuse).
Q3: How can I tell when to replace a drill bit?
Watch for these signs:
Increased burrs or poor hole surface finish
Hole size deviation over 0.1mm
Vibration, noise, or difficulty cutting
Maintenance Tip: Inspect tips with a magnifier for rounding or micro-chipping to catch issues early.
Q4: How do I select the proper helix angle for my material?
| Material Type | Recommended Helix Angle |
|---|---|
| Carbon/Alloy Steel | 30°-35° (Standard Helix) |
| Aluminum, Copper | 40°-45° (High Helix) |
| Hardened/Heat-treated Steel | 10°-20° (Low Helix) |
Tip: The correct helix angle improves chip evacuation and tool life while minimizing vibration.
Q5: Can I request non-standard or custom drill designs?
Yes! We support full customization, including:
Step drills or multi-diameter profiles
Custom point geometries (e.g., split point, 4-facet)
Internal coolant channels
Specific flute lengths, shank diameters, or helix angles
Coating selection per workpiece material
Note: Custom orders require dimensional drawings or specs. Contact our technical team for engineering assistance.
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