Iwaki, Japan – March, 2026 – Tungaloy Corporation (President: Satoshi Kinoshita, Head Office: Iwaki City, Fukushima Prefecture) announces the expansion of its AddDoFeed／DoFeed series with new size 06 UER inserts featuring a low lead-angle design that enhances tool life, stability, and productivity even in long overhang and difficult-to-cut material applications.
Challenges and Trends
In industries such as power generation and aerospace, opportunities to handle difficult-to-machine materials like stainless steel and heat-resistant alloys are increasing. While these materials excel in high-temperature strength and corrosion resistance, they present challenges due to high cutting resistance, leading to short tool life. Furthermore, as workpiece geometries become more complex, machining with long overhangs is often required to access recessed areas and avoid interference with fixtures. Under such conditions, tool deflection easily causes chatter, leading to productivity losses. The market demand for tools capable of achieving long tool life and stable, high-efficiency machining is growing significantly.
Product Overview
AddDoFeed/DoFeed is TANGALOY’s flagship series of multi-functional, high-efficiency ultra-high feed cutters. Featuring a low-resistance design for stable machining and excellent chip evacuation, it reduces spindle load. With a wide range of diameters from small to large, it handles diverse machining tasks including flat surfaces, grooves, and shoulder cutting, enabling significant reductions in machining time and costs.
Benefits and Features
Feature 1: Extended Tool Life via Low Cutting Angle
– The UER insert’s low cutting angle design generates thin chips, achieving extended tool life. Particularly effective for machining difficult-to-cut materials like stainless steel and heat-resistant alloys.
Feature 2: High Stability During Long Overhang Machining
-Using UER inserts reduces chatter even under long overhang conditions, enabling expanded machining capabilities and improved productivity.
Cutting Performance
| Cutter | TXN06R050M22.0E05 (ø50 mm, CICT = 5) |
| Insert | LNMU06X5UER-MJ AH3225 LNMU06X5ZER-MJ AH3225 |
| Cutting speed | Vc = 200 m/min |
| Feed per tooth | fz = 1.25 mm/t |
| Depth of cut | ap = 1 mm |
| Width of cut | ae = 20 mm |
| Coolant | Dry |
| Machine | Vertical M/C, BT50 |
| Cutter | TXN06R050M22.0E05 (ø50 mm, CICT = 5) |
| Insert | LNMU06X5UER-MJ AH8015 LNMU06X5ZER-MJ AH8015 |
| Cutting speed | Vc = 40 m/min |
| Feed per tooth | fz = 0.3 mm/t |
| Depth of cut | ap = 0.8 mm |
| Width of cut | ae = 20 mm |
| Coolant | Wet |
| Machine | Vertical M/C, BT50 |
Success Stories
IMPROVED TOOL LIFE
By using the UER type with a smaller approach angle, the tool life was extended while maintaining machining efficiency.
| Industry | Engineering |
| Component | Block |
| Material ISO code |  Stainless steel |
| Work material | SUS304/X5CrNi18-9 |
| Machine(Spindletype) | Vertical M/C, CAT40 |
| Tool family | Milling |
| Toolcategory | Face milling |
| Product name | DoFeed |
| TSR No. | 5545T |
