HSS Center Drills: Designed for Precision and Long-Lasting Performance

• Customization: Available
• Customized: Customized
• Standard: GB/T
• Model NO.: HSS
• Length: Standard Length
• Type: Center Drill Bit
• Material: High Speed Steel
• Usage: Metal Drilling
• Unit Price: Contact Us to Get Latest Price
• Customized Support: OEM, ODM
• Application: Stainless Steel, Aluminum, Copper, Steel and Other
• Color: Customizable
• Transport Package: Plastic Box or Your Requriement
• Specification: Standard Sizes or Customized
• Trademark: ZEICIN
• Origin: China
• HS Code: 8207501000

Product Description

 

ZEICIN is a specialized export brand focusing on high-speed steel (HSS) raw materials and precision tools. With independently developed material technology and a one-stop production system - from raw material development, smelting, RS-ESR remelting, forging, heat treatment to precision machining - ZEICIN delivers stable, high-quality, and cost-effective products. We are committed to providing reliable, durable HSS materials and specialized drills for demanding applications such as stainless steel, quenched & tempered steel, and alloy components, meeting high-quality, high-performance, and high cost-performance standards.

 

Product Description

 

1. Exceptional Drilling Accuracy Across Multiple Materials
Engineered from premium high-speed steel (HSS), these center drills deliver outstanding precision in metal lathe operations. Whether you're working with aluminum, brass, mild steel, or alloy metals, they ensure clean, burr-free entry points-crucial for high-tolerance machining and accurate alignment.

2. Stepped Geometry for Versatile and Clean Drilling
Featuring a finely engineered stepped design, each drill allows for multi-diameter hole creation in a single operation. This reduces tool changes, improves workflow efficiency, and incorporates a deburring function that ensures professional-grade, smooth finishes-eliminating the need for additional post-processing.

3. Heat-Treated for Superior Durability
Vacuum heat treatment and advanced tempering processes give these drills enhanced wear resistance and thermal stability. Designed to maintain edge integrity under high-speed, high-friction conditions, they remain sharp and structurally sound even during extended use on tough metals.

4. Universal Application in Precision Machining
Perfectly suited for both industrial professionals and workshop enthusiasts, these center drills are widely used in sectors such as metalworking, automotive fabrication, aerospace component preparation, and precision tooling. Their high concentricity and stability make them ideal for drilling pilot holes before tapping or reaming.

 

Six Key Features

1. Premium Material Selection - High-quality steel for extended lifespan.
2. Short Lead Time - Efficient production ensures quick delivery.
3. Fast Drilling Speed - Sharp cutting edge for rapid penetration.
4. Reliable Quality - Strict quality control for consistent performance.
5. Multiple Specifications - Various sizes to meet different needs.
6. High Fracture Resistance - Reinforced design prevents breakage.

 

Detailed Advantages

1. Precision-Ground Cutting Edge for Clean, Accurate Results
Crafted from high-speed steel (HSS), each center drill features a finely ground cutting edge that delivers smooth and controlled entry into metal surfaces. The razor-sharp edge reduces cutting force, minimizes burr formation, and ensures clean, precisely centered holes-critical for high-accuracy lathe operations.

2. Self-Centering Tip for Maximum Drilling Accuracy
Equipped with a self-centering split point tip, these drill bits eliminate the need for center punching and prevent walking during startup. This allows for immediate, stable drilling on both flat and curved surfaces-providing pinpoint accuracy from first contact.

3. Optimized Spiral Flutes for Efficient Chip Evacuation
Each step is engineered with spiral flute geometry that clears chips efficiently and maintains cutting temperature at safe levels. This not only reduces tool wear and prevents clogging but also ensures continuous, smooth drilling-ideal for high-speed, high-duty machining.

4. Protective Coating for Corrosion and Wear Resistance
Finished with a polished or protective coating (e.g., TiN or TiAlN), these center drills resist rust, oxidation, and abrasive wear. The coating enhances tool life and maintains performance, even in harsh industrial settings where moisture or coolant exposure is frequent.

5. Multi-Step Design for Efficiency and Versatility
The integrated multi-diameter step design allows you to drill various hole sizes with a single tool, reducing downtime and tool changes. This well-balanced geometry improves drilling control and accuracy-ideal for preparing holes for tapping, reaming, or further machining in automotive, aerospace, and metalworking applications.

 

 

Why Choose Our Product?

1. Engineered for Long-Lasting Performance
Our center drill bits are crafted from premium high-speed steel (HSS), offering exceptional hardness and wear resistance. They are specifically built to endure the high heat and friction of metal lathe operations, maintaining their edge sharpness and structural stability over repeated use-even when cutting tough materials like stainless steel, aluminum, and high-strength alloys.

2. Precision Drilling with Burr-Free Results
Featuring a stepped, multi-diameter design, each drill bit allows for clean, accurate hole formation in one continuous motion-eliminating the need to switch tools. This design ensures smooth transitions between diameters, minimizing burrs and surface damage. The result: cleaner finishes, reduced secondary processing, and greater machining efficiency.

3. Versatility for Professional-Grade Applications
Whether you're a machinist, metal fabricator, or precision toolmaker, these center drills deliver reliable performance across a wide range of lathe tasks. Ideal for centering, tapping prep, and reaming setups, their precise geometry and balanced construction ensure superior control and consistency-making them indispensable in high-precision metalworking environments.

 

Our Advantages

Precision Engineering for Reliable Performance

1. CNC Precision Grinding
Every HSS center drill is manufactured using advanced CNC grinding technology, delivering uniformly stepped profiles, razor-sharp cutting edges, and perfect tip centering. This ensures minimal vibration, precise drilling, and optimal stability-especially critical for high-speed lathe operations in metalworking and fabrication industries.

2. Vacuum Heat Treatment
To maximize strength and durability, each drill undergoes vacuum heat treatment, significantly increasing both surface hardness and internal toughness. This process allows the drill to maintain cutting integrity under continuous use, even on difficult materials like stainless steel, titanium, and aluminum.

3. Ultra-Fine Polishing
The mirror-like polish minimizes surface friction and facilitates superior chip evacuation, reducing heat buildup during deep or repetitive drilling. This finish also protects the drill bit and workpiece surface, making it ideal for applications involving delicate metals or thermoplastics.

 

Material Excellence & Heat Optimization

1. Ultra-Clean Steel Metallurgy (EAF + LF + VD + RS ESR)
Our HSS drills are produced through advanced steel purification-including Electric Arc Furnace, Ladle Refining, Vacuum Degassing, and Electro-Slag Remelting. This ensures low impurity levels and improved microstructure, critical for durability, consistency, and toughness when drilling hard alloys or layered metal components.

2. Advanced Thermal Processing
Quenching, cryogenic treatment, and precision tempering combine to deliver hardness up to HRC 67, while preserving impact resistance and anti-fracture integrity. This makes our drills exceptionally suited for continuous use in high-speed, high-load lathe conditions.

3. RS ESR Edge Reinforcement
Rapid Solidification ESR technology enhances carbide and cobalt dispersion along the cutting edge. The result: superior edge retention and wear resistance, maintaining consistent performance in high-temperature and high-pressure operations.

 

Customization & Performance-Driven Design

1. Material Flexibility with M35 Core
While M2 and M42 options are available, our M35-based drills offer the best balance of hardness and toughness-ideal for demanding applications that require both edge durability and thermal resistance.

2. Tailored Geometry & Coatings
We provide custom configurations for step size, flute length, and helix angle. Surface coatings such as TiN, TiAlN, or TiCN can be added to further improve wear resistance, extend tool life, and enhance cutting performance in specialized machining environments.

 

Optimized for High-Precision Lathe Work

1. Multi-Step Flute Engineering
Each flute is designed for smooth chip evacuation and effective heat control, preventing blockages during high-RPM operations. This is especially valuable when drilling thin-walled components or heat-sensitive materials.

2. Refined Cutting Angles
Our optimized tip and step angles reduce axial load, increase positioning accuracy, and ensure consistent hole quality-ideal for high-precision work on both rigid and thin-section parts.

3. Coating for Application-Specific Use
TiAlN provides outstanding thermal resistance for high-speed cutting, while TiCN enhances hardness and surface lubrication-making our HSS center drills reliable across a wide range of industrial settings.

 

Packaging & Shipping

FAQ

Q1: What makes HSS center drills more durable than standard drill bits?
A: High-speed steel (HSS) center drills are manufactured using advanced metallurgy and vacuum heat treatment processes. This gives them exceptional hardness, wear resistance, and thermal stability-making them last significantly longer, especially under high-speed or high-friction conditions.

Q2: Can these center drills maintain accuracy over time?
A: Yes. Thanks to CNC precision grinding and ultra-fine polishing, our HSS center drills maintain sharp edges and accurate centering even after repeated use. This ensures consistent, burr-free holes-critical for applications requiring tight tolerances.

Q3: What materials are these center drills suitable for?
A: They are ideal for drilling into metals like stainless steel, aluminum, brass, copper, mild steel, and various alloys. Their wear-resistant and thermally stable design makes them a reliable choice across multiple industries, including metalworking, automotive, aerospace, and manufacturing.

Q4: Do the drills support multi-diameter or step-hole applications?
A: Absolutely. The stepped design allows for clean drilling of multiple diameters with a single tool, reducing tool changes and improving efficiency. Integrated chip removal features also help maintain smooth cutting performance.

Q5: Are coating options available for extreme environments?
A: Yes. We offer TiN, TiAlN, and TiCN coatings tailored to different applications-from high-speed machining to abrasive material cutting. These coatings extend tool life and improve performance in challenging environments.

Q6: Can I order custom specifications?
A: Certainly. We provide customization services for step size, flute length, helix angle, and material grade (e.g., M35, M42). Just let us know your specific application needs.