668V-4RL 4-Flute Long-Shank Ball Nose Carbide End Mill for Steel Machining
668V-4RL
LV® Tool's 668V-4RL is a high-performance 4-flute long-shank ball nose carbide end mill, engineered for precision and durability. Part of our versatile 66 Series, this tool features our advanced Arti-Co coating, which provides exceptional wear resistance and significantly extends tool life in demanding applications. With a high-precision diameter tolerance, the 668V-4RL ensures stable and reliable cutting performance. It is expertly designed for machining a wide range of materials, including carbon steel, alloy steel, tool steel, stainless steel, and cast iron, making it an ideal choice for mold and die manufacturing, automotive, and general engineering industries. As a leading carbide end mill manufacturer, we offer this tool in various dimensions to meet your specific requirements.
High-Performance 4-Flute Long-Shank Ball Nose End Mill
The 668V-4RL from LV® Tool is a premium 4-flute long-shank ball nose end mill designed for high-precision contouring and finishing operations. Engineered for stability and extended reach, this tool is an essential component for complex machining tasks in various industrial sectors. Its robust construction and advanced features make it a reliable choice for professional machinists and manufacturers seeking superior performance and tool longevity.
Key Features & Benefits
- Advanced Arti-Co Coating: Features a proprietary Arti-Co surface treatment that delivers excellent wear resistance, reduces friction, and significantly extends the operational life of the tool, even under high-speed machining conditions.
- High-Precision Diameter Tolerance: Manufactured to exacting standards, ensuring a precise diameter tolerance for consistent and accurate cutting results, which is critical for achieving fine surface finishes.
- Stable Cutting Performance: The 4-flute geometry is optimized for smooth chip evacuation and reduced vibration, providing exceptional stability during cutting and enabling higher feed rates.
- Versatile Material Application: Expertly designed to machine a broad range of materials with hardness up to HRC 55, including carbon steel, alloy steel, tool steel, stainless steel, and cast iron.
Recommended Applications
The 668V-4RL series is highly effective for a variety of applications, including:
- 3D contouring and profiling in mold and die manufacturing.
- Finishing operations for automotive and aerospace components.
- General-purpose milling in job shops and production facilities.
- Machining of complex surfaces and deep cavities where a long shank is required.
Product Specifications
A comprehensive range of sizes is available to suit your specific machining needs. Please refer to the table below for detailed dimensions.
| Model | Diameter (mm) | Corner Radius (R) | Flute Length (mm) | Shank Diameter (mm) | Flutes | Overall Length (mm) |
|---|---|---|---|---|---|---|
| 030034 | 3 | 0.3R | 8 | 3 | 4 | 75 |
| 030054 | 3 | 0.5R | 8 | 3 | 4 | 75 |
| 030104 | 3 | 1R | 8 | 3 | 4 | 75 |
| 040034 | 4 | 0.3R | 10 | 4 | 4 | 75 |
| 040054 | 4 | 0.5R | 10 | 4 | 4 | 75 |
| 040104 | 4 | 1R | 10 | 4 | 4 | 75 |
| 040154 | 4 | 1.5R | 10 | 4 | 4 | 75 |
| 060034 | 6 | 0.3R | 15 | 6 | 4 | 100 |
| 060054 | 6 | 0.5R | 15 | 6 | 4 | 100 |
| 060104 | 6 | 1R | 15 | 6 | 4 | 100 |
| 060154 | 6 | 1.5R | 15 | 6 | 4 | 100 |
| 060204 | 6 | 2R | 15 | 6 | 4 | 100 |
| 080034 | 8 | 0.3R | 20 | 8 | 4 | 100 |
| 080054 | 8 | 0.5R | 20 | 8 | 4 | 100 |
| 080104 | 8 | 1R | 20 | 8 | 4 | 100 |
| 080154 | 8 | 2R | 20 | 8 | 4 | 100 |
| 080204 | 8 | 2R | 20 | 8 | 4 | 100 |
| 080254 | 8 | 2.5R | 20 | 8 | 4 | 100 |
| 080304 | 8 | 3R | 20 | 8 | 4 | 100 |
| 100034 | 10 | 0.3R | 25 | 10 | 4 | 100 |
| 100054 | 10 | 0.5R | 25 | 10 | 4 | 100 |
| 100104 | 10 | 1R | 25 | 10 | 4 | 100 |
| 100154 | 10 | 1.5R | 25 | 10 | 4 | 100 |
| 100204 | 10 | 2R | 25 | 10 | 4 | 100 |
| 100254 | 10 | 2.5R | 25 | 10 | 4 | 100 |
| 100304 | 10 | 3R | 25 | 10 | 4 | 100 |
| 120034 | 12 | 0.3R | 30 | 12 | 4 | 100 |
| 120054 | 12 | 0.5R | 30 | 12 | 4 | 100 |
| 120104 | 12 | 1R | 30 | 12 | 4 | 100 |
| 120154 | 12 | 1.5R | 30 | 12 | 4 | 100 |
| 120204 | 12 | 2R | 30 | 12 | 4 | 100 |
| 120254 | 12 | 2.5R | 30 | 12 | 4 | 100 |
| 120304 | 12 | 3R | 30 | 12 | 4 | 100 |
668V-4RL 4-Flute Long-Shank Ball Nose Carbide End Mill for Steel Machining Professional Precision Carbide End Mills and Cutting Tools Manufacturing
LV Tool provides 668V-4RL 4-Flute Long-Shank Ball Nose Carbide End Mill for Steel Machining for buyers who need dependable precision carbide end mills and cutting tools in professional CNC machining environments. This product supports manufacturers, machine shops, and tooling distributors looking for stable cutting performance, accurate dimensions, and reliable results across demanding materials and production conditions.
Our carbide tools are produced with premium materials, precision CNC grinding, coating expertise, and ISO 9001-certified quality control. This helps customers improve tool life, surface finish, chip evacuation, cutting stability, and machining efficiency in applications such as mold making, automotive parts, aerospace components, electronics, and precision machinery.
As a Taiwan manufacturer with OEM ODM support, LV Tool helps buyers evaluate product fit, standard dimensions, custom tooling needs, and long-term supply requirements. We focus on practical cutting tool solutions that reduce downtime, control cost, and support consistent production quality.

