SumiDrillTM GDX Series: Indexable Insert Drills
Indexable insert drills offer a cost-effective solution as they require less carbide while providing excellent tool management performance. In addition, they eliminate the need for regrinding, making them widely used in the automotive industry and other sectors where demand continues to grow each year. In recent years, deep hole drilling has become increasingly necessary for large machined components, such as wind power generators. However, these applications have traditionally been difficult to handle with conventional indexable insert drills.
To address this demand, the company has developed the SumiDrill™ GDX series, an indexable insert drill capable of deep hole drilling (L/D = 7*). This solution enables stable cutting performance for deep holes in stainless steel and hot-rolled structural steel plates, applications that were previously difficult to achieve using indexable insert drills.
*L/D An indicator of hole depth, calculated as: L (hole depth) ÷ D (tool diameter)
Outstanding Features of SumiDrillTM Drill GDX Series
- High-Rigidity Body Design with Excellent Chip Evacuation: The drill body is designed to achieve an optimal balance between high rigidity and excellent chip evacuation performance. This enables stable deep-hole drilling capability of up to L/D = 7.
2. Optimized Peripheral and Central Insert Design
The peripheral and central inserts are specially designed according to the specific requirements of their respective cutting functions. In addition, chip evacuation performance is further enhanced through the combination of the versatile G-type chipbreaker and the L-type chipbreaker, which offers superior chip control. This design provides excellent performance not only when machining general steels, but also when cutting stainless steels and hot-rolled structural steel plates.
3. Latest Grade Technology
The inserts utilize the latest ACU2500 coated carbide grade, suitable for machining a wide range of workpiece materials. For the peripheral inserts, tool life can be further optimized by selecting ACP2000, which is ideal for steel machining, or ACS3000, which is specifically designed for machining exotic alloys.
What is SumiDrill GDX? The True Performer for Deep Hole
Drilling!
The SumiDrill GDX indexable insert drill was previously available in diameter sizes ranging from ø18.5–22.0 mm. The product lineup has now been expanded to include additional diameter sizes of ø15.5–18.0 mm and ø22.5–27.0 mm.
The GDX series drill is an indexable insert drill designed with high rigidity, making it ideal for deep hole drilling applications. It features excellent chip control and evacuation performance, ensuring stable and efficient machining. The tool can be used across a wide range of materials, from carbon steels to stainless steels, while delivering long tool life and a well-balanced combination of durability and high cutting performance.
With these features, the tool delivers excellent performance for users facing the following challenges:
1. Ideal for: An indexable insert drill capable of stable deep-hole drilling: Are you concerned about the cost of drills used for deep-hole machining of large components, such as automotive parts or wind power generation equipment?
The GDX series drill is designed with high tool rigidity and excellent chip evacuation capability, enabling stable deep-hole drilling of up to L/D = 7 using an indexable insert drill. This design provides both cost efficiency and reliable performance for demanding machining applications.
2. Ideal for users experiencing unstable chip control when machining low-carbon steel or stainless steel: When drilling low-carbon steel or stainless steel, long chips are often produced. These chips can easily wrap around the drill or clog the cutting edge, leading to machining problems. A common solution is to use step drilling to control chip formation.
The GDX series drill provides excellent chip control by utilizing different chipbreaker designs and materials for the central insert and peripheral insert. This optimized configuration ensures efficient machining performance while maintaining high stability throughout the drilling process.
3. Ideal for users facing limited tool life: High-efficiency machining places significant loads on cutting tools, which can lead to issues such as reduced machining accuracy and shortened tool life.
The GDX insert is designed to reduce cutting resistance compared with previous models. It utilizes the ACU2500 grade, suitable for general-purpose machining, along with ACP2000 and ACS3000 grades specifically developed for the peripheral cutting edge. This optimized combination enhances tool stability and significantly extends tool life even under high-performance machining conditions.
It is therefore an excellent solution for manufacturers seeking to improve production stability and overall machining efficiency.
Application Example 1: Flange machining (S25C, S45C) – Processing efficiency improved by up to three times!
Application Example 2: Flange machining (SS400) – Reduces turning processes and improves overall machining efficiency!
The GDX drill provides superior chip control compared to competing products. While some competitors require step drilling (every 1 mm) to manage chip formation, the GDX series can break chips into small pieces during continuous drilling, eliminating the need for step drilling. This results in higher machining efficiency and more stable cutting performance.
The SumiDrill GDX Series is engineered to enhance drilling performance in industrial metalworking applications. Featuring a high-rigidity tool body and optimized cutting edge geometry, it enables stable deep-hole drilling up to L/D = 7 while maintaining excellent chip control. This design effectively prevents chip entanglement and improves overall process stability.
Advanced insert grades, including ACU2500, ACP2000, and ACS3000, extend tool life and support a wide range of materials, from carbon steel to stainless steel. The result is higher machining efficiency, reduced machine downtime, and improved production continuity. With its outstanding cutting performance, the SumiDrill GDX Series offers a reliable solution for improving productivity, precision, and cost efficiency in modern manufacturing.
Article by: MEGATech Thailand & Sumipol Corporation Limited << Click here