Iwaki, Japan – June, 2025 – Tungaloy Corporation (President: Satoshi Kinoshita, Head Office: Iwaki City, Fukushima Prefecture) announces the expansion of its AddMultiTurn series, now featuring internal coolant holders in PSC (C4, C5, C6) delivering enhanced tool life and machining stability in multi-directional turning operations.
Challenges and Trends
In recent years, achieving both higher productivity and energy efficiency has become a critical challenge in external turning operations. This is especially true in mass production settings for general machinery and automotive components, where reducing machining time is essential. The demand for high-efficiency cutting tools is growing rapidly, as shorter machining times not only improve operational efficiency but also help reduce machine operating hours, thereby lowering electricity consumption. This aspect is gaining attention from an environmental perspective as well. Against this backdrop, the market is increasingly seeking the introduction of higher-performance tools.
Product Overview
AddMultiTurn is a highly efficient tool capable of handling various turning operations—including external turning, facing, profiling, and high-feed turning—with a single tool. Its double-sided insert with six cutting edges enhances tool life and productivity, while also contributing to cost reduction through fewer tool changes.
Benefits and Features
Feature 1: Expanded Holder Variations to Accommodate Diverse Machine Specifications
PSC types are available in three sizes: C4, C5, and C6.
Square shank types will be released in 2025, offered in 20 mm and 25 mm, making them compatible with a wide range of machine tools.
This broad compatibility allows more manufacturing sites to benefit from the high performance of AddMultiTurn.
Feature 2: Enhanced Machining Performance with Multi-Point Coolant Supply Near the Cutting Edge
Coolant is supplied from a total of seven points: four from the top and three from the bottom.
The design ensures direct coolant delivery to cutting edges for both forward and reverse turning, significantly improving cooling and chip evacuation.
Suppresses cutting heat, reducing insert wear and greatly extending tool life.
Feature 3: High-Rigidity Internal Coolant Holder Supporting Multi-Directional Machining
The newly expanded internal coolant holder lineup features a high-rigidity clamp with an optimized coolant path.
Ensures high stability in multi-directional machining—such as forward turning, reverse turning, facing, and profiling—which is a hallmark of AddMultiTurn.
Particularly in high-feed reverse turning, the synergy of tool rigidity and coolant delivery performance enables high-efficiency machining.
Cutting Performance
Improve chip control and tool life with internal coolant
| Back turning | |
| Insert | 6C-TOMG250608M-TM T9215 |
| Toolholder | ATXOR2525X25-CHP |
| Cutting speed | Vc = 250 m/min |
| Feed | f = 1 mm/rev |
| Depth of cut | ap = 1 mm |
Front turning
| Insert | 6C-TOMG250608M-TM T9215 |
| Cutting speed | Vc = 250 m/min |
| Feed | f = 0.3 mm/rev |
| Depth of cut | ap = 1.5 mm |
Back turning
| Insert | 6C-TOMG250608M-TM T9215 |
| Cutting speed | Vc = 250 m/min |
| Feed | f = 1 mm/rev |
| Depth of cut | ap = 1 mm |
New Internal coolant tool holder achieved 2 times longer in front turning, 1.9 times longer in back turning compared with external coolant supply!
Success Stories
IMPROVED TOOL LIFE
New Internal coolant AddMultiTurn extend the tool life 4 times thanks to effective coolant supply with 4 MPa.
| Industry | Automotive |
| Component | Automotive part |
| Material ISO code |  P – Steel |
| Work material | SUP10/51CrV4 |
| Machine(spindle type) | CNC Lathe |
| Tool family | Turning |
| Tool category | External & Face turning |
| Product name | AddMultiTurn |
| TSR No. | 5257T |
REDUCED MACHINING TIME
New Internal coolant AddMultiTurn reduced machining time by 20% thanks to high feed back turning and tool life was equal to better than current tools.
| Industry | Automotive |
| Component | Wheel |
| Material ISO code |  K – Cast iron |
| Work material | FCD500 |
| Machine(spindle type) | CNC Lathe |
| Tool family | Turning |
| Tool category | External & Face turning |
| Product name | AddMultiTurn |
| TSR No. | 5258T |
