994L-UPA 4-Flute Unequal Helix AlCrN Coated End Mill for Stainless Steel & Titanium | LV Tool Precision Carbide End Mills and Cutting Tools
The 994L-UPA is a high-performance 4-flute unequal helix carbide end mill from LV INTERNATIONAL CO., LTD., engineered to minimize vibration in demanding machining operations. Featuring a state-of-the-art AlCrN coating, this end mill forms a protective aluminum oxide layer at high temperatures, significantly extending tool life and ensuring superior performance. Its unique double R-groove design facilitates efficient chip breaking and evacuation. A post-coating polishing process enhances durability, increasing tool life by up to 300% and enabling faster feed rates. This versatile unequal helix end mill is ideal for machining tough materials, including stainless steel, titanium alloys, mold steel, and heat-treated steels, making it a reliable solution for aerospace, medical, and mold & die industries. Choose LV Tool for precision carbide cutting tools, ISO 9001-certified manufacturing, and OEM ODM support from Taiwan.
994L-UPA 4-Flute Unequal Helix AlCrN Coated End Mill for Stainless Steel & Titanium
994L-UPA
The 994L-UPA is a high-performance 4-flute unequal helix carbide end mill from LV INTERNATIONAL CO., LTD., engineered to minimize vibration in demanding machining operations. Featuring a state-of-the-art AlCrN coating, this end mill forms a protective aluminum oxide layer at high temperatures, significantly extending tool life and ensuring superior performance. Its unique double R-groove design facilitates efficient chip breaking and evacuation. A post-coating polishing process enhances durability, increasing tool life by up to 300% and enabling faster feed rates. This versatile unequal helix end mill is ideal for machining tough materials, including stainless steel, titanium alloys, mold steel, and heat-treated steels, making it a reliable solution for aerospace, medical, and mold & die industries.
High-Performance Unequal Helix End Mill for Vibration-Free Machining
The 994L-UPA series from LV INTERNATIONAL CO., LTD. is a premium 4-flute unequal helix end mill specifically engineered to overcome vibration during high-speed machining. By integrating an unequal flute spacing design and varying the helix angle of each cutting edge, this tool effectively suppresses chatter and resonance. This innovative design leads to superior surface finishes, improved dimensional accuracy, and significantly extended tool life, making it an essential tool for manufacturers seeking to optimize their production processes.
Key design features include:
- Unequal Flute Division: Disrupts the harmonic vibrations that cause chatter, ensuring stable cutting even in deep slots or aggressive roughing operations.
- Variable Helix Angles: Each flute is ground at a slightly different angle to further dampen vibrations and distribute cutting forces more evenly.
- Double R-Groove Geometry: A specialized flute design that enhances chip control, breaking chips into manageable sizes and evacuating them efficiently from the cutting zone to prevent re-cutting and tool damage.
Advanced AlCrN Coating for Extreme Durability
This carbide end mill is treated with a high-performance AlCrN (Aluminum Chromium Nitride) coating, which provides exceptional thermal stability and wear resistance. During high-temperature machining, the coating forms a protective aluminum oxide (Al2O3) layer, insulating the carbide substrate from heat and preventing premature wear. Furthermore, every tool undergoes a post-coating polishing process, which smooths the surface to reduce friction and improve coating adhesion. This dual-process approach results in a tool that can withstand the most demanding applications.
- Extended Tool Life: The combination of a durable coating and post-polishing can increase tool life by 200-300% compared to uncoated or standard coated tools.
- Higher Feed Rates: The reduced friction and enhanced durability allow for increased machining parameters, shortening cycle times and boosting productivity.
- Excellent Chip Evacuation: The smooth surface ensures chips flow away from the workpiece, preventing buildup and improving the quality of the machined surface.
Versatile Applications Across Demanding Materials
Manufactured from premium micro-grain carbide rods, the 994L-UPA end mill offers an excellent balance of hardness and toughness. Its robust design and advanced coating make it highly effective for a wide range of materials, particularly those known for being difficult to machine.
Recommended Materials:
- Stainless Steel (e.g., SUS304, SUS316)
- Titanium Alloys
- Mold Steel
- Alloy Steel
- Tool Steel
- Hardened & Heat-Treated Steels (up to HRC 65)
Product Specifications
The 994L-UPA series is available in a range of sizes to meet your specific application needs. As a leading carbide end mill supplier, we offer OEM and custom solutions upon request.
| Model | Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Shank Diameter | Flutes | Corner Chamfer |
|---|---|---|---|---|---|---|
| 030406 | 3 | 6 | 50 | 6D | 4T | 0.06C |
| 040406 | 4 | 11 | 50 | 6D | 4T | 0.08C |
| 050406 | 5 | 11 | 50 | 6D | 4T | 0.10C |
| 060406 | 6 | 13 | 50 | 6D | 4T | 0.12C |
| 080408 | 8 | 19 | 60 | 8D | 4T | 0.16C |
| 100410 | 10 | 22 | 75 | 10D | 4T | 0.20C |
| 120412 | 12 | 26 | 75 | 12D | 4T | 0.24C |
| 160416 | 16 | 32 | 100 | 16D | 4T | 0.32C |
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994L-UPA 4-Flute Unequal Helix AlCrN Coated End Mill for Stainless Steel & Titanium Professional Precision Carbide End Mills and Cutting Tools Manufacturing
LV Tool provides 994L-UPA 4-Flute Unequal Helix AlCrN Coated End Mill for Stainless Steel & Titanium 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.