AD Series Solid Carbide Drill Bits | 1-20mm 3XD 5XD for Aluminum Alloy & Non-Ferrous Metals

Product Introduction

The AD Series Solid Carbide Drill Bits are high-precision drilling tools developed for aluminum alloy and non-ferrous metal machining. Available in diameters from 1mm to 20mm with standard 3XD and 5XD flute lengths, these drills are designed for high-speed drilling where chip evacuation, cutting stability, hole quality, and resistance to material adhesion are critical.

The AD series uses a low-cobalt ultra-fine grain carbide substrate, high-helix mirror-polished flutes, sharp cutting geometry, and DLC/ZrN anti-stick coating options. The combined design helps reduce aluminum adhesion, built-up edge, flute clogging, hole scratching, and excessive burr formation.

The drills are suitable for pure aluminum, 6061, 6063, 7075 aluminum alloys, die-cast aluminum, high-silicon aluminum, Al-Mg alloys, Al-Cu alloys, and other non-ferrous metals. They can be used with CNC machining centers, CNC drilling and milling machines, multi-axis machine tools, and automated production lines.

Key Product Features

Ultra-Fine Grain Carbide Substrate

The AD series uses low-cobalt ultra-fine grain carbide with a balance of hardness, toughness, rigidity, and heat resistance. The solid carbide construction supports stable drilling at high spindle speeds and helps reduce tool deflection during deeper-hole machining.

For high-silicon die-cast aluminum and other abrasive non-ferrous materials, the carbide substrate provides improved wear resistance compared with conventional HSS drilling tools.

High-Helix Mirror-Polished Flutes

The high-helix flute geometry is designed around the long, curled chips commonly generated during aluminum machining. Widened and deepened flutes provide an efficient chip evacuation path, while the mirror-polished surface reduces friction and material adhesion.

This structure helps prevent chip wrapping, flute clogging, and accumulation around the cutting edge during continuous machining.

Sharp Light-Cutting Drill Point

The optimized sharp drill point and thinned chisel edge reduce axial cutting resistance and support stable one-step positioning under suitable machining conditions.

The positive cutting geometry promotes shearing rather than excessive extrusion, which is useful when drilling thin-wall aluminum components. Rounded and reinforced margins help balance cutting sharpness with edge durability.

DLC/ZrN Anti-Stick Coating

The AD series can use DLC or ZrN special coating options designed for aluminum and non-ferrous materials. The low-friction coating surface reduces the tendency of aluminum to adhere to the cutting edge and helps suppress built-up edge formation.

The coating also supports stable cutting under high-speed machining conditions and helps maintain consistent tool performance during automated production.

3XD and 5XD Options

Standard 3XD and 5XD configurations provide flexibility for different drilling depths. The 3XD version is suitable for general hole-making applications, while the 5XD version provides additional reach for deeper holes.

Internal and External Coolant Compatibility

The drill configuration supports both external coolant supply and internal through-coolant applications, depending on the selected tool design. Dry cutting with compressed-air blow-off and MQL machining can also be considered for suitable aluminum applications.

Aluminum Machining Advantages

Aluminum alloys and non-ferrous metals have high ductility and strong material adhesion characteristics. Conventional drilling tools may experience built-up edge, chip wrapping, hole scratching, burr formation, and unstable dimensional accuracy.

The AD Series Solid Carbide Drill Bits are configured specifically to address these machining conditions through:

• High-helix chip evacuation geometry

• Mirror-polished flute surfaces

• Sharp light-cutting drill points

• Low-friction anti-stick coating

• High-rigidity solid carbide construction

• 3XD and 5XD drilling options

• Internal and external coolant compatibility

These features help improve drilling stability and reduce the need for frequent tool changes and secondary hole-finishing operations.

Applicable Materials

The AD series is suitable for a broad range of aluminum and non-ferrous materials, including:

• Pure aluminum

• 6061 aluminum alloy

• 6063 aluminum alloy

• 7075 aluminum alloy

• Aluminum die castings

• High-silicon aluminum

• Aluminum-magnesium alloys

• Aluminum-copper alloys

• Other suitable non-ferrous metals

Tool selection should be matched to the material grade, workpiece structure, hole depth, machine rigidity, spindle speed, feed rate, and cooling method.

Application Areas

New Energy Components

Suitable for drilling aluminum components used in battery systems and other new energy equipment.

Aerospace Components

The drills can be used for precision machining of aluminum aerospace parts where hole accuracy, surface quality, and machining consistency are important.

Automotive Parts

Suitable for aluminum automotive components, die-cast parts, housings, and other high-volume production applications.

3C Electronics

The small-diameter range and precision cutting geometry make the series suitable for aluminum housings and precision components used in consumer electronics.

Precision Non-Ferrous Hardware

Applicable to various aluminum and non-ferrous hardware components manufactured through CNC machining and automated production.

Technical Specifications

Standard 3XD Dimensions

Standard 5XD Dimensions

Recommended Cutting Conditions

Vc = Cutting Speed (m/min); f = Feed Rate (mm/rev)
The values below are arranged as Lower Limit – Recommended Value – Upper Limit.

Cutting parameters are reference values and should be adjusted according to machine capability, workpiece material, tool diameter, hole depth, workholding, and cooling conditions.

Dry, MQL and Wet Cutting

The AD series can be used with different cooling strategies depending on the application.

Dry Cutting: Compressed-air blow-off can assist chip evacuation during suitable aluminum machining operations.

MQL: Minimal lubrication can reduce friction and improve cutting stability where the machining process permits reduced coolant use.

Flood Coolant: External coolant or internal through-coolant supply can be used when additional heat management and chip evacuation are required.

The appropriate cooling method should be selected according to material, cutting speed, hole depth, machine configuration, and production requirements.

Hole Quality and Burr Control

The sharp cutting geometry reduces axial cutting resistance and promotes clean shearing of aluminum material. Combined with the polished high-helix flute, the design helps maintain smooth chip evacuation and reduce the risk of chip-related scratches.

Under appropriate machining conditions, the AD series is designed to support high-precision hole production, with the supplied product information specifying H7/H8 hole tolerance and surface roughness of Ra1.6 or better for suitable applications.

Final hole accuracy depends on the machine tool, workpiece stability, tool runout, cutting parameters, material condition, and other process variables.

OEM and Custom Drill Options

Custom manufacturing is available for specific non-ferrous metal drilling requirements. Possible OEM/ODM options include:

• Non-standard diameters

• Special flute lengths

• Customized point angles

• Special flute geometry

• DLC or ZrN coating options

• Customer logo laser engraving

• Other application-specific configurations

Standard 3XD and 5XD sizes can be selected according to hole depth and machining requirements. Sample testing and bulk orders can be arranged based on the required specifications.

B2B Buyer Advantages

Full Diameter Coverage: 1-20mm standard diameters support a wide range of aluminum drilling applications.

Multiple Depth Options: 3XD and 5XD versions provide flexibility for standard and deeper holes.

Reduced Aluminum Adhesion: Mirror-polished flutes and DLC/ZrN coating options help reduce built-up edge and chip sticking.

Efficient Chip Evacuation: High-helix flute geometry provides a clear path for long aluminum chips.

High-Speed Machining: Solid carbide construction supports high spindle speeds and higher cutting parameters than conventional HSS tools under suitable conditions.

Flexible Cooling: Compatible configurations support external coolant, internal coolant, compressed air, and MQL processes.

Precision-Oriented Design: Sharp cutting edges and rigid tool construction support consistent hole quality in CNC production.

Custom Tool Service: Non-standard dimensions, coatings, point angles, and other configurations can be considered for OEM/ODM orders.

Manufacturing and Quality Control

CHANGZHOU BOSTONTOOL CO.,LTD. specializes in the development and production of carbide cutting tools for industrial machining. The manufacturing process covers carbide blank selection, precision grinding, flute polishing, cutting-edge preparation, coating treatment, and final inspection.

Quality control is applied throughout the production process to help maintain dimensional consistency, cutting-edge quality, and stable performance between batches.

For customers using the drills in high-volume aluminum machining, technical assistance can be provided for cutting parameter selection and application evaluation.

Packaging, Delivery and Storage

The drills are packaged to protect the cutting edges during handling, storage, and long-distance transportation. Packing requirements can be confirmed according to the order and shipping method.

Delivery time depends on product specifications and order quantity. Standard and customized tools may have different production schedules.

Carbide drills should be stored in a clean and dry environment and protected against impact, contamination, and cutting-edge damage.

Frequently Asked Questions

Why use aluminum-specific carbide drills instead of general-purpose drills?

Aluminum and non-ferrous metals tend to generate long chips and have a strong tendency to adhere to cutting tools. The AD series uses high-helix polished flutes, sharp cutting geometry, and DLC/ZrN anti-stick coating options to improve chip evacuation and reduce aluminum adhesion.

What aluminum alloys can the AD series process?

The drills are suitable for pure aluminum, 6061, 6063, 7075, aluminum die castings, high-silicon aluminum, Al-Mg alloys, Al-Cu alloys, and other applicable non-ferrous metals.

Can these drills be used for high-speed machining?

Yes. The ultra-fine grain carbide substrate and specialized coating support high-speed machining when the machine, tool diameter, workpiece, and cutting conditions are properly matched.

Can the drills be used for dry cutting?

Yes. The AD series can be used for suitable dry cutting applications with compressed-air chip removal. MQL and flood coolant are also available options depending on the machining process.

Are both 3XD and 5XD versions available?

Yes. The product range includes standard 3XD and 5XD configurations from 1mm to 20mm, providing options for different hole depths.

Is OEM customization available?

Yes. Custom diameters, flute lengths, point angles, coating options, flute configurations, and customer logo engraving can be considered according to the application requirements.

Product Supply

For B2B purchasing, customers can provide the required drill diameter, hole depth, aluminum alloy grade, machine type, spindle speed, cooling method, and expected production volume. This information can be used to select a suitable tool configuration and cutting condition.

The AD Series Solid Carbide Drill Bits are designed for efficient and stable drilling of aluminum alloys and non-ferrous metals, combining rigid carbide construction, high-helix chip evacuation, anti-stick coating options, and 3XD/5XD configurations for CNC production.

CHANGZHOU BOSTONTOOL CO.,LTD. provides solid carbide cutting tools and application-oriented machining solutions for industrial customers, including standard and customized drilling tools for aluminum and non-ferrous metal processing.