YG-1

YG-1, a cutting tool manufacturer based in South Korea, offers solid carbide drills that combine proprietary coating technology with optimized point geometries—delivering both stable tool life and high machining efficiency.

This article outlines the key features and applications of YG-1’s solid carbide drill lineup.

Recommended
Applications for YG-1

YG-1’s solid carbide drills are ideal for production environments focused on reducing machining costs and ensuring consistent production schedules.
Typical use cases include minimizing tool changes on mass production lines or reducing setup time between batches.

Combining high-hardness, heat-resistant Z-Coating with a wave-shaped cutting edge design, YG-1 drills extend tool life and lengthen intervals between regrinds.

This leads to lower cost per hole and more predictable production planning.

Note: Performance may vary depending on tool type and machining conditions such as spindle speed, feed rate, coolant, and machine rigidity.

How to Choose Drills
from YG-1

As a carbide drills manufacturer offering both high-performance carbide drills and tough HSS-PM options, YG-1 provides drill series for mass production, general-purpose machining, and less rigid setups. The right choice depends on production volume, workpiece material, drilling depth, coolant availability, and the level of process stability required.

For High-Efficiency Drilling in Mass Production

Recommended Series

DREAM DRILLS PRO Series

When to Choose This Type

Choose the DREAM DRILLS PRO Series when productivity, tool life consistency, and stable performance are priorities in mass production lines. This series is especially suitable for optimized drilling processes in steel and cast iron, where continuous operation and predictable tool performance are important.

YG-1’s proprietary Z-Coating helps protect the cutting edge from heat and wear during continuous machining and when drilling harder materials. The wave-shaped cutting edge and helical thinning geometry reduce cutting forces and break chips into smaller pieces, supporting smooth chip evacuation at depths of 3×D to 5×D.

This series is a strong choice for production environments where productivity gains, reduced downtime, and consistent tool life management are required.

Suitable Materials

• Carbon and alloy steels, including quenched and tempered steels
• Stainless steels, including austenitic and martensitic grades
• Cast iron, including gray and ductile cast iron
• Non-ferrous metals, including aluminum, copper, and brass
• Heat-resistant alloys and titanium alloys
• Hardened steels up to approximately 45 HRC

Available Types

• DGN506 Series – 3×D, short type, with coolant holes
• DGN508 Series – 5×D, long type, with coolant holes

For Flexible General-Purpose Drilling

Recommended Series

DREAM DRILLS GENERAL Series

When to Choose This Type

Choose the DREAM DRILLS GENERAL Series when the drilling process needs flexibility across different materials, machines, or production conditions. This series is designed for general-purpose drilling in materials such as carbon steel, pre-hardened steels, cast iron, non-ferrous metals, and some plastics.

Unlike the more production-focused PRO Series, the GENERAL Series is suited for job shops, small-lot production, and initial process setups where material types or machining conditions may vary. Depth options of 3×D, 5×D, and 8×D give manufacturers more flexibility when selecting a drill for different hole depths.

The TiAlN-based coating with special surface treatment helps improve chip evacuation and maintain consistent hole quality across a broad range of applications.

Suitable Materials

• General and cast steels, including unalloyed, low-alloy, and high-alloy steels
• Stainless steels, including austenitic and martensitic grades
• Cast iron, including gray and ductile cast iron
• Non-ferrous metals, including aluminum, copper, and brass
• Heat-resistant alloys, including nickel- and titanium-based alloys
• Medium-hardness hardened materials

Available Types

• DH406 Series – 3×D, short type, with coolant holes
• DH408 Series – 5×D, long type, with coolant holes
• DH421 Series – 8×D, extra long type, with coolant holes
• DH414 Series – 3×D, stub type, with coolant holes
• DH416 / DH711 Series – 3×D, short type, with coolant holes
• DH418 / DH712 Series – 5×D, long type, with coolant holes
• DH423 Series – 3×D, short type, without coolant holes
• DH424 Series – 5×D, long type, without coolant holes
• DH722 Series – 5×D, long type, without coolant holes
• DH404 Series – 3×D, short type, without coolant holes

For Tough Drilling on Less Rigid Setups

Recommended Series

MULTI-1 DRILLS HSS-PM Series

When to Choose This Type

Choose the MULTI-1 DRILLS Series when toughness and reliability are more important than maximum carbide-level productivity. Made from HSS-PM, or high-performance powdered high-speed steel, this series is suitable for applications where machine rigidity, setup stability, or cutting conditions may not be ideal.

The TiAlN coating improves wear resistance, while the precision-ground point supports high positioning accuracy. This makes the series a practical choice for pre-drilling, general-purpose drilling, conventional machines, and machining centers where a tougher drill material can help reduce the risk of unexpected tool failure.

Suitable Materials

• Aluminum
• Stainless steels
• Carbon steels
• Structural steels

Available Types

Information not available on the official website.

Quick Selection Guide

• For mass production drilling: Choose the DREAM DRILLS PRO Series.
• For steel and cast iron in optimized processes: Consider DREAM DRILLS PRO for tool life consistency and productivity.
• For job shops or small-lot production: Choose the DREAM DRILLS GENERAL Series.
• For mixed materials and changing machining conditions: Consider DREAM DRILLS GENERAL for broader flexibility.
• For 8×D drilling depth: Choose the DREAM DRILLS GENERAL Series with 8×D options.
• For machines without coolant-hole requirements: Consider DREAM DRILLS GENERAL models without coolant holes.
• For less rigid machines or unstable setups: Choose MULTI-1 DRILLS HSS-PM Series for added toughness.
• For pre-drilling or conventional machines: Consider MULTI-1 DRILLS when reliability and positioning accuracy are priorities.

For more detailed technical information and product comparisons, visit our special feature on carbide drills for stainless steel.
The page highlights three top manufacturers with proven strengths in stainless steel machining, including in-depth coverage of recommended tools for this demanding material.

After-Sales Support
from YG-1

YG-1 offers continued support after purchase.

Regrinding and recoating services are available to restore drill performance and extend tool life.
The company also provides quick delivery of custom tools tailored to specific customer requirements.

U.S. customers can access technical support through the Charlotte Tech Center in North Carolina.

Company Information

Address	13-40, Songdogwahak-ro 16beon-gil, Yeonsu-gu, Incheon 21984, South Korea
Phone Number	YG-1 AMERICA（Charlotte Tech Center）: +1-980-318-5333
Official Website	https://www.yg1usa.com