M42 HSS Center Drill with Tialn Coating – for High-Load Machining Tasks

• 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

 

• Wide Application Range

  Crafted from M42 high-speed steel, these center drill bits are specifically designed for precision drilling in metal lathe operations. The TiAlN coating enhances their performance under high-load machining conditions, making them ideal for tough materials like stainless steel, hardened alloys, and high-carbon steels. These drills ensure clean, precise holes with minimal burr formation, offering reliability and long-lasting performance in various metalworking, automotive, and industrial manufacturing sectors.

   

  Multi-Diameter Drilling with Integrated Deburring

  These M42 center drills feature a stepped design that accommodates multiple hole diameters without the need to switch tools. The smooth transitions between diameters ensure accurate hole placement, while the integrated deburring capability reduces the need for additional finishing or secondary processes-improving overall efficiency and minimizing production costs.

   

  Enhanced Thermal and Wear Resistance

  The TiAlN coating significantly improves the heat resistance and wear resistance of these drill bits, making them perfect for high-speed lathe operations and high-load drilling tasks. Even under extreme temperatures, these center drills maintain sharp cutting edges and structural integrity, ensuring extended tool life in demanding machining environments.

   

  Cross-Industry Utility

  Ideal for both professionals and hobbyists, these M42 HSS center drills are essential for precision metalworking. They are particularly effective in creating precise centers for drilling, tapping, and reaming in metal components, making them indispensable in automotive, aerospace, and heavy manufacturing industries. Their accuracy and durability make them the go-to solution for tasks requiring high precision under high-stress conditions.

 

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. Razor-Sharp Cutting Edge with Enhanced Hardness

Crafted from M42 high-speed steel with 8% cobalt, these center drill bits feature precision-ground cutting edges that provide sharp, efficient penetration into tough materials like stainless steel, tool steel, and high-carbon alloys. The M42 material ensures exceptional hardness and wear resistance, making it perfect for demanding, high-load applications, while reducing cutting resistance and minimizing burr formation for clean, accurate holes.

2.Self-Centering Split Point Tip for Accurate Starts

The self-centering split point tip ensures precise starting without the need for center punching. This design allows for stable, walk-free drilling, even on curved or hard metal surfaces. The anti-slip tip offers superior control and precision right from the first contact, ensuring smooth and accurate hole creation-ideal for high-precision lathe operations.

3. Efficient Step-by-Step Chip Removal with Spiral Flute Design

Each step of the drill bit is engineered for optimal chip removal, utilizing a spiral flute design that ensures effective evacuation of metal shavings. This reduces the risk of clogging, minimizes heat buildup, and ensures smoother drilling-especially in high-speed lathe operations. The design promotes consistent performance and extends the tool's lifespan under heavy-duty, high-speed use.

4. Durable, Corrosion-Resistant TiAlN Coating

These M42 center drill bits come with a TiAlN (Titanium Aluminum Nitride) coating that significantly enhances their heat resistance and abrasion resistance. The coating provides superior protection against wear, rust, and corrosion, making these drill bits ideal for operations exposed to coolants, lubricants, or harsh environmental conditions. This feature ensures that the drill bits maintain their performance and longevity even under the most demanding lathe conditions.

5. Balanced, Multi-Stage Geometry for Enhanced Efficiency

The multi-step design of these center drill bits allows them to drill multiple diameters with a single tool, reducing the need for tool changes and improving operational efficiency. The balanced geometry ensures smooth, stable drilling throughout, making it perfect for tasks such as center drilling, tapping, and reaming in various metalworking, automotive, and manufacturing applications.

 

 

Why Choose M42 HSS Center Drill with TiAlN Coating?

• Material: M42 HSS with 8% cobalt for superior hardness and wear resistance.

• Coating: TiAlN coating for high-temperature resistance, enhanced edge retention, and extended tool life.

• Design: Self-centering split point tip for precise starting, multi-step geometry for versatile hole sizes, and spiral flutes for efficient chip removal.

• Ideal For: High-load machining, high-speed lathe operations, and precise center drilling in metalworking, automotive, and aerospace industries.

Brade Name

GB Type

DIN Type

AISI/BS Type

JIS Type

C

Si

Mn

Cr

Mo

V

W

Co

M42

/

1.3247

M42

SKH59

1.00-1.15

0.30-0.60

0.30-0.40

3.50-4.50

9.00-10.00

0.95-1.35

1.15-1.85

7.58-8.50

Our Advantages

CNC Precision Grinding for Exacting Standards

Crafted from M42 high-speed steel and precision-ground using CNC technology, these center drill bits ensure uniform step heights, razor-sharp cutting edges, and accurate tip centering. This precision guarantees clean, accurate drilling, ideal for creating centers in metal parts with minimal vibration and maximum stability, even during high-speed lathe operations.

 

Vacuum Heat Treatment for Exceptional Durability

To enhance tool longevity and performance, each center drill bit undergoes vacuum heat treatment. This treatment improves both surface hardness and core toughness, making the bits highly resistant to wear and heat. Perfect for drilling through tough materials like stainless steel, aluminum, and alloys, these bits maintain cutting efficiency and sharpness under demanding lathe conditions.

 

Ultra-Fine Polishing for Reduced Friction

The ultra-fine polished surface of our center drill bits reduces friction during operation, improving chip evacuation and minimizing heat generation. This polishing also protects both the drill bit and the workpiece surface, preventing surface damage, especially when drilling softer metals or thermoplastics. The result is smooth and clean drilling with minimal effort.

 

Refined Metallurgy and Thermal Optimization for Maximum Reliability

1. Advanced Steel Purification: EAF + LF + VD + RS ESR

Our M42 HSS center drill bits are made from ultra-clean high-speed steel, purified using advanced processes such as Electric Arc Furnace (EAF), Ladle Refining (LF), Vacuum Degassing (VD), and Electro-Slag Remelting (ESR). This purification reduces impurities, enhancing toughness and reliability, making these drills ideal for high-load applications in precision lathe operations and hard metals.

2. Integrated Thermal Optimization for Hardness and Toughness

A combination of quenching, cryogenic treatment, and precision tempering enhances hardness to HRC 67, while maintaining resistance to chipping and cracking. This makes the M42 center drills highly reliable in high-speed, high-pressure drilling conditions, such as those found in automotive, aerospace, and metalworking industries.

3. RS ESR Edge Enhancement Technology

Through Rapid Solidification ESR processing, the cutting edge structure is reinforced with uniformly distributed carbides and cobalt, enhancing edge retention and wear resistance. This feature ensures long-lasting performance in high-temperature, high-load lathe operations, particularly in demanding industrial conditions.

 

Customizable Engineering Options for High-Precision Machining

1. Material Flexibility: M42 HSS for High-Temperature Resistance

While M2 and M35 variants are available, we prioritize M42 HSS for its superior red hardness and high-temperature resistance, making it perfect for metal drilling where both edge strength and heat resistance are critical.

2. Tailored Step Geometry & Coatings

We offer customizable step sizes, flute lengths, and helix angles to meet specific industrial needs. Additionally, we provide optional PVD coatings such as TiN, TiAlN, or TiCN to enhance thermal resistance, reduce friction, and ensure long tool life in tough lathe applications.

 

Key Design Adaptations for Precision Lathe Drilling

1. Multi-Step Flute Optimization

The multi-step flute design ensures efficient chip removal and thermal management, reducing the risk of clogging during high-speed lathe drilling. This is particularly beneficial when drilling through thermoplastics, thin metals, or composite materials. The design ensures consistent, smooth drilling even at higher RPMs.

2. Engineered Cutting Angles for Stability

The step transitions and tip geometry are optimized to reduce axial force, improve stability, and prevent material deformation. This is especially beneficial when drilling soft metals or thin-walled parts, ensuring a clean and accurate finish with minimal deviation.

3. Performance-Enhancing Coatings

These center drill bits feature TiAlN coatings for high-temperature lathe operations and TiCN coatings for extreme wear environments. These coatings significantly improve tool lifespan, allowing for reliable, multi-diameter drilling even in the most challenging industrial conditions.

 

Packaging & Shipping

FAQ

Q1: What makes M42 HSS center drill bits with TiAlN coating superior to regular drill bits?
A: M42 HSS center drill bits are made from high-performance steel with 8% cobalt, which provides exceptional hardness and wear resistance under high temperatures. The TiAlN coating further enhances these properties by improving heat resistance, reducing friction, and increasing tool life. This makes them ideal for high-load machining tasks, particularly when drilling through hard metals such as stainless steel and tough alloys.

 

Q2: What materials can these M42 HSS center drill bits handle?
A: These center drill bits are specifically designed for high-load machining and can effectively drill through tough materials such as stainless steel, tool steels, carbon steel, and hardened alloys. The TiAlN coating improves their performance on high-strength materials, making them ideal for metalworking, automotive, and aerospace industries where precision and durability are critical.

 

Q3: Are these center drill bits available in multiple sizes and custom configurations?
A: Yes, our M42 HSS center drill bits are available in a range of standard sizes to accommodate various lathe operations. Custom sizes, step geometries, and configurations are available upon request to meet specific industrial requirements. Additionally, we offer options for PVD coatings like TiN, TiAlN, or TiCN, tailored to your needs for optimal performance in different machining environments.

 

Q4: Can these M42 HSS center drill bits be used for high-speed and high-load drilling applications?
A: Yes! These center drill bits are specifically engineered for high-speed and high-load drilling tasks. The TiAlN coating offers superior heat resistance and abrasion resistance, allowing the bits to perform reliably in high-speed lathe operations and heavy-duty machining environments. Their robust design ensures that the drill bits maintain sharpness and cutting efficiency even during repetitive or intensive tasks.