Iwaki, Japan – July, 2025 – Tungaloy Corporation (President: Satoshi Kinoshita, Head Office: Iwaki City, Fukushima Prefecture) announces the expansion of its DrillForce-Meister series, now featuring new SMC heads in diameters ø0.7874″ – ø1.0197″ (ø20–ø25.9 mm) with secure screw-clamp mechanism and chamfered-edge geometry, ensuring burr-free deep hole drilling and extended tool life.
Challenges and Trends
In various industries such as structural steel construction, construction machinery, automobiles, molds, and shipbuilding, there is a growing demand for deep hole drilling in the ø0.787″ – ø1.000″ (ø20–ø25 mm) range. However, conventional machining methods require pre-hole drilling, which leads to longer lead times and increased tool costs. Additionally, there have been cases where the drill head loosens during machining, negatively impacting machining stability and surface quality. As a result, there is a strong demand for products that can address these challenges.
Product Overview
DrillForce-Meister is a replaceable-head drill specialized for large-diameter hole machining. Featuring a unique clamping mechanism and a dual-edge design, it delivers high hole accuracy and productivity. The easy head replacement also contributes to extended tool life.
Benefits and Features
Feature 1: Achieves high-precision and high-efficiency deep hole machining
- Enables one-pass deep hole drilling without the need for pilot holes, even with long overhangs up to 8×D
- Improves productivity by reducing lead time and minimizing tool change frequency
- Significantly reduces tooling costs, maximizing cost performance
Feature 2: Combines excellent cutting performance with extended tool life
- Chamfered cutting edge design suppresses chipping during machining and reduces burrs on the machined surface
- Special PVD coating “AH9130” provides superior wear resistance for both steel (P materials) and cast iron (K materials)
- Enables stable long-term machining, extending tool life and reducing replacement frequency
Feature 3: High usability and compatibility
- Screw-clamp mechanism prevents head loosening during machining
- No need to fully remove the screw during head replacement, shortening setup time
- Compatible with existing DrillForce-Meister bodies, allowing for tool inventory consolidation
Cutting Performance
Stable long-overhang drilling with no need for pre-drilling (SMC head)
| Tool | TIS260F32-8 |
| Drill head | SMC1024 |
| Grade | AH9130 |
| Workpiece material | FCD600 / 600-3 |
| Cutting speed | Vc = 262 sfm (80 m/min) |
| Feed | f = 0.0098 ipr (0.25 mm/rev) |
| Hole depth | H = 5.905″ (150 mm) |
| Hole type | Through holes |
| Coolant | Wet |
Success Stories
IMPROVED PRODUCTIVITY
DrillForce-Meister achieved 1.9 times higher productivity thanks to it’s outstanding entry stability with the SMC head and extremely rigid drill design. There were various workpiece shapes and fixtures, but the ability to machine with a long overhang allowed us to unify the tooling.
| Industry | Heavy |
| Component | Machine part |
| Material ISO code |  K – Cast iron |
| Work material | FCD600/GGG60 |
| Machine(spindle type) | Horizontal Machining Center Large(#50,HSK100) |
| Tool family | Holemaking |
| Tool category | Drilling |
| Product name | DrillForce-Meister |
| TSR No. | 5275D |
