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. Wide Application Range for Metal Machining
Our high-speed steel (HSS) center drill bits are expertly engineered for precision drilling in metal lathe operations. Designed to handle aluminum, brass, mild steel, and other common metals, these drill bits ensure clean, accurate holes with minimal burr formation. Their robust versatility makes them suitable across a wide range of industries-from automotive and aerospace to general metalworking.
2. Multi-Diameter Drilling with Integrated Deburring
Each bit features a stepped geometry that enables multiple hole sizes to be drilled without changing tools. These precisely machined steps allow for smooth diameter transitions, while built-in deburring functionality provides clean finishes-reducing the need for additional processing or manual cleanup.
3. Thermal Durability for Extended Tool Life
Manufactured from premium HSS and treated with advanced vacuum heat treatment, our center drills offer outstanding resistance to wear and thermal degradation. They retain edge sharpness and structural integrity even during high-speed, high-heat operations-making them ideal for continuous-use machining environments.
4. Cross-Industry Versatility
Whether you're a professional machinist or an advanced hobbyist, these HSS center drill bits are indispensable for precision centering applications. Used widely in metal fabrication, automotive, mold-making, and CNC machining, they deliver consistent results when preparing for drilling, tapping, or reaming tasks.
Six Key Features
- Premium Material Selection - High-quality steel for extended lifespan.
- Short Lead Time - Efficient production ensures quick delivery.
- Fast Drilling Speed - Sharp cutting edge for rapid penetration.
- Reliable Quality - Strict quality control for consistent performance.
- Multiple Specifications - Various sizes to meet different needs.
- High Fracture Resistance - Reinforced design prevents breakage.
1. Razor-Sharp Cutting Edge for Effortless Drilling
Engineered from high-speed steel (HSS), these center drills feature CNC-ground cutting edges that deliver fast, clean penetration into metal surfaces. The sharp edge profile minimizes cutting resistance and significantly reduces burr formation-ensuring precise, smooth entry, especially important for lathe operations requiring perfect alignment.
2. Self-Centering Split Point for Accuracy and Stability
Each drill is equipped with an anti-slip split point tip that eliminates the need for center punching. This ensures accurate starts and stable, walk-free drilling-even on angled, curved, or hardened surfaces. From first contact, you get superior drilling precision and control.
3. Optimized Step-by-Step Chip Evacuation
The stepped design combined with spiral flutes ensures efficient chip clearance at each stage of drilling. This prevents clogging, lowers heat accumulation, and supports continuous high-speed operation-prolonging tool life and maintaining cutting performance throughout the job.
4. Corrosion-Resistant Surface for Long-Term Reliability
Each drill bit is available with a polished or titanium-coated finish to enhance resistance against rust, abrasion, and chemical exposure. Ideal for use in environments with cutting fluids, coolants, or humidity, the coated surface protects the tool while maintaining consistent cutting performance.
5. Balanced Multi-Stage Geometry for Maximum Efficiency
With a precision-engineered multi-step design, these center drills can handle multiple hole sizes in a single tool-reducing downtime from tool changes and boosting productivity. The balanced geometry ensures steady cutting and vibration-free performance, ideal for drilling, tapping prep, or reaming setups in automotive, aerospace, and industrial fabrication.
Why Choose Our Product?
1. Superior Heat and Wear Resistance for Extended Tool Life
Manufactured from premium-grade high-speed steel (HSS), our center drill bits are built to handle high temperatures and friction during demanding lathe operations. Their enhanced hardness ensures long-lasting sharpness and structural stability-perfect for repeated use on tough materials like stainless steel, aluminum, and other metal alloys.
2. Multi-Diameter Drilling with Clean, Burr-Free Results
Featuring a precision-engineered stepped design, each drill bit allows for gradual hole enlargement across multiple diameters-without needing to change tools. The result: accurate, smooth holes with minimal burr formation. This reduces the need for secondary processing and boosts machining efficiency.
3. Professional Versatility for Every Application
Whether you're running a production facility or working on a precision DIY project, these HSS center drill bits deliver consistent, professional-grade performance. Ideal for centering holes before drilling, tapping, or reaming, they provide excellent control and clean results across metalworking, automotive, aerospace, and fabrication tasks.
Our Advantages
Core Manufacturing Advantages
1. CNC Precision Grinding
Our center drills are produced using CNC-controlled grinding to ensure uniform step geometry, razor-sharp cutting edges, and accurate tip centering. This results in low-vibration, high-stability drilling-especially critical in high-speed lathe and CNC operations where precision matters most.
2. Vacuum Heat Treatment
Each bit undergoes vacuum heat treatment to achieve optimal surface hardness and core toughness. This enhances wear resistance and thermal durability, ensuring reliable performance when drilling hard materials like stainless steel, aluminum, and alloyed metals.
3. Ultra-Fine Polished Finish
A refined polishing process reduces surface friction, improves chip evacuation, and minimizes heat buildup during deep or repetitive drilling. This helps protect both the tool and the workpiece, especially when working with soft metals or thermoplastics.
Refined Metallurgy & Edge Optimization
1. Advanced Steel Purification (EAF + LF + VD + ESR)
We use ultra-clean HSS refined through Electric Arc Furnace, Ladle Refining, Vacuum Degassing, and Electro-Slag Remelting. This metallurgical integrity ensures greater strength, fewer impurities, and better consistency for high-precision applications.
2. Integrated Thermal Optimization
Each drill benefits from a fully optimized thermal cycle-quenching, cryogenic treatment, and tempering-to achieve HRC 67 hardness. The result: excellent edge retention, resistance to chipping, and reliable operation under high-speed, high-pressure conditions.
3. RS ESR Edge Reinforcement
Through Rapid Solidification ESR, cutting edges are enhanced with fine, uniformly distributed carbides and cobalt. This significantly improves wear resistance, edge sharpness, and overall tool longevity during heavy-duty lathe use.
Custom Engineering Options Available
1. Material Flexibility - M35 Preferred Core
We offer M2, M35, and M42 steel options, with M35 being the most recommended for its ideal balance of hardness and toughness-perfect for demanding precision machining.
2. Tailored Geometry & Coatings
Customize flute lengths, helix angles, step sizes, and tip geometry to match your exact requirements. Add optional PVD coatings (TiN, TiAlN, TiCN) to enhance performance in high-friction or high-heat environments.
Lathe-Optimized Structural Design
1. Multi-Step Flute Optimization
Flutes between steps are engineered for high-efficiency chip removal and thermal control, preventing clogging and maintaining smooth operation even in high-RPM conditions or when drilling thin-walled or heat-sensitive materials.
2. Precision-Cut Step Angles
Carefully optimized cutting angles and transitions reduce axial force, improve stability, and minimize material deformation. This ensures cleaner results and greater accuracy in delicate or high-tolerance work.
3. Performance-Focused Surface Coatings
Choose coatings such as TiAlN for high-temperature protection or TiCN for abrasion-heavy environments. These coatings dramatically increase tool life and consistency-especially for high-volume or multi-diameter operations.
Packaging & Shipping
FAQ
Q1: Why should I upgrade to high-quality HSS center drills?
A: Upgrading to high-quality HSS (High-Speed Steel) center drills provides enhanced precision, longer tool life, and better performance in demanding machining environments. These drills are designed to withstand high temperatures and wear, offering cleaner, more accurate drilling with reduced downtime and fewer tool changes.
Q2: What materials can these center drills be used on?
A: Our HSS center drills are suitable for a wide range of materials, including stainless steel, aluminum, brass, mild steel, and other common industrial metals. They are ideal for metalworking, CNC machining, automotive components, and mold manufacturing.
Q3: How do these drills improve cutting tool performance?
A: With razor-sharp cutting edges, self-centering split point tips, and thermally treated HSS construction, these center drills deliver faster drilling, reduced burr formation, and excellent centering accuracy. Their stepped design also allows for multi-diameter drilling without switching tools, increasing efficiency.
Q4: Are these center drills suitable for high-speed lathe operations?
A: Yes. These drills are specifically designed for high-speed, high-precision lathe and CNC environments. The combination of vacuum heat treatment, CNC-ground geometry, and optional PVD coatings ensures stable performance even at high RPMs.
Q5: Do you offer different sizes or customized specifications?
A: Absolutely. We provide a full range of standard sizes and support customization of step geometry, flute length, helix angle, tip angle, and coatings (e.g., TiN, TiAlN, TiCN). Whether you need tools for general machining or specialized industrial use, we can tailor them to your needs.
Q6: What industries typically use these HSS center drills?
A: Our center drills are widely used in metalworking, automotive manufacturing, aerospace, machinery fabrication, and maintenance workshops-anywhere precise center holes are required for drilling, tapping, or reaming operations.
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