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HSS Twist Drill Bits
1.Precise dimension,long life and high efficiency.
2.High-speed steel (HSS) provides hardness for wear resistance
3.Black oxide finish reduces wear while promoting chip and coolant flow on ferrous materials
4.Self-centering 118-degree notched point penetrates material without a pilot hole more easily than a conventional point, and maintains a sharp cutting edge
5.Morse taper shank allows the tool to be inserted directly into the machine's spindle to facilitate high-torque applications such as large cut diameters
6.When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
7.Designed to perform in a broad range of materials in the iron and steel families
8.Spiral flutes are constructed with a higher flute angle to remove chips more easily.
HSS Twist Drill Bits - Professional High-Speed Steel Drilling Solutions
Premium Quality HSS Twist Drill Bits for Industrial Applications
At Danyang Ebuy Tools Co., Ltd., we manufacture premium HSS Twist Drill Bits engineered for professional drilling operations. Our high-speed steel drill bits feature superior red hardness, maintaining cutting performance at temperatures up to 600°C. With daily production capacity of 150,000 pieces and 319 skilled employees across our 77,000 square meter facility, we deliver consistent quality and reliable supply. Each bit undergoes rigorous quality control, ensuring hardness ratings of 63-68 HRC depending on grade specifications.
Superior Material Grades for Demanding Applications
M2 Grade Standard HSS
Our M2 grade bits offer balanced toughness and wear resistance with hardness ratings of 63-65 HRC. These bits excel in general-purpose drilling applications across mild steel and wood materials.
M35 Cobalt Enhanced Performance
For challenging materials like stainless steel and high-tensile alloys, our M35 cobalt-enhanced products contain 5% cobalt content. This composition increases hardness to 66-68 HRC, providing superior performance in demanding applications.
M42 Premium Grade
Our premium M42 grade features 8% cobalt content for maximum hardness and heat resistance. These bits handle the most challenging materials including Inconel and hardened steels.
Our Factory
Technical Specifications
|
Parameter
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Standard
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Heavy-Duty
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Premium
|
|
Material Grade
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M2 HSS
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M35 Cobalt HSS
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M42 Cobalt HSS
|
|
Hardness (HRC)
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63-65
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66-68
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67-70
|
|
Point Angle
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118°
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135° Split Point
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135° Split Point
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|
Helix Angle
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30° (Type N)
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30° (Type N)
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Variable
|
|
Surface Treatment
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Black Oxide
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TiN Coating
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TiAlN Coating
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Temperature Resistance
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550°C
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600°C
|
650°C
|
|
Diameter Tolerance
|
h8
|
h8
|
h7
|
Our Certificate
Precision Engineering Features
Advanced Point Geometry
Our bits feature precision-ground point angles optimized for specific applications. Standard 118° points provide excellent general-purpose performance, while 135° split points prevent walking and ensure accurate hole placement on harder materials.
Optimized Helix Design
The helical flutes are engineered for efficient chip evacuation. Our Type N helix angle suits general applications, while specialized angles handle specific materials like aluminum or hardened steels.
Professional Surface Treatments
· Black Oxide: Enhanced corrosion resistance and improved lubricity
· TiN Coating: Gold-colored titanium nitride increases surface hardness to 85 HRC
· TiAlN Coating: Advanced coating for dry machining and high-temperature applications
Why Choose Us
Industrial Applications
CNC Manufacturing Operations
In high-volume automotive manufacturing, our HSS Twist Drill Bits excel at drilling engine blocks and transmission components. The M35 grade with TiAlN coating handles thermal shock during interrupted cuts while minimizing tool changes.
Structural Steel Fabrication
For construction applications using magnetic drills on I-beams, our 135° split-point bits provide necessary shear strength. They withstand vibrations and lateral forces without snapping, outperforming brittle carbide alternatives.
Maintenance and Repair Operations
General maintenance involving diverse materials benefits from our versatile M2 HSS bits. Whether drilling out stripped bolts, repairing aluminum casings, or fabricating mild steel brackets, these bits offer cost-effective performance with resharpening capability.
Sheet Metal Working
Our specialized point geometry prevents bit walking on thin materials. The progressive cutting action reduces burr formation, eliminating secondary deburring operations.
Our Exhibition
Quality Assurance Standards
Material Verification
Every batch undergoes hardness testing using Rockwell C scales. We ensure substrate materials meet specific grade requirements, with M2 exceeding 63 HRC and cobalt grades reaching specified hardness levels.
Geometric Precision
Optical inspection verifies concentricity within 0.05mm tolerance. Lip height symmetry prevents unbalanced cutting loads that cause premature failure.
Performance Testing
Our quality control includes standardized life-cycle testing in 4140 steel at specified feeds and speeds. This validates torque resistance and confirms bending strength limits meet industrial standards.
Surface Integrity
We inspect for micro-cracks in web and flute surfaces. Coated products undergo adhesion scratch tests ensuring coatings withstand operational heat without delamination.
Our Packaging
Customization Options
We offer comprehensive customization services including:
· Custom point angles for specific materials
· Specialized coatings for unique applications
· Private labeling with your brand
· Custom packaging solutions
· Modified helix angles for specific chip evacuation requirements
Frequently Asked Questions
Q: What materials can the items handle effectively?
A: Our bits exceed expectations in ferrous and non-ferrous metals counting gentle steel, stainless steel, aluminum, copper, and cast press. Cobalt grades handle harder amalgams like Inconel and solidified steels.
Q: How do I select between M2 and M35 grades?
A: M2 suits general-purpose penetrating in gentle steels and gentler materials. Select M35 cobalt review for stainless steel, high-tensile combinations, or applications requiring amplified apparatus life.
Q: What's the contrast between 118° and 135° point angles?
A: 118° focuses work well for common penetrating in milder materials. 135° part focuses anticipate strolling on harder surfaces and give way better centering accuracy.
Q: Can these bits be resharpened?
A: Yes, HSS bits can be resharpened numerous times utilizing appropriate pounding procedures. This makes them more conservative than carbide choices for numerous applications.
Q: What surface treatment ought to I choose?
A: Dark oxide gives essential erosion assurance. TiN coating expands apparatus life essentially. TiAlN coating suits high-speed, dry machining applications with fabulous warm resistance.
Q: How do I anticipate untimely bit failure?
A: Utilize fitting speeds and nourishes for your fabric. Guarantee satisfactory oil or coolant. Supplant bits appearing over the top wear some time recently total disappointment harms workpieces.
Contact Us
Ready to enhance your drilling operations with HSS Twist Drill Bits? Contact our technical team at [email protected] for personalized recommendations and competitive pricing.
