HRC55 4 Flutes Roughing Cut End Mill
Rough Cut End Mill Overview
The MSK HRC55 series standard 4-flute solid carbide roughing end mill is a high-performance tool engineered for efficient machining of hardened materials. Its distinctive scalloped cutting edge design—featuring chip-breaking serrations on the outer diameter—ensures that metal chips are fractured into small, manageable segments during operation. This unique geometry not only reduces cutting resistance but also allows for stable machining at larger radial depths of cut, effectively minimizing vibration and protecting both the spindle and the workpiece surface.
Key Features & Advantages
This end mill combines premium raw materials, advanced coating technology, and thoughtful geometric optimization to deliver outstanding results in demanding applications:
Superior Substrate & Coating – Manufactured from ultra-fine grain tungsten carbide, the tool offers exceptional bending strength and wear resistance. The distinctive bronze-colored composite coating enables direct roughing to semi-finishing of materials up to HRC55 hardness, reducing tool changeovers and maximizing machine utilization—ultimately shortening production cycles.
Efficient Chip Evacuation – The generously sized flute channels, paired with the optimized scalloped edge, guarantee smooth chip flow even under heavy cutting conditions. This eliminates chip packing and ensures consistent, vibration-free machining.
User-Friendly Shank Design – The shank features a chamfered edge, which not only enhances the tool’s aesthetic appearance but also facilitates easier and more secure clamping. This detail reduces stress concentration and improves the overall durability of the tool holder interface.
Application Guidelines & Recommendations
To achieve optimal performance and longest tool life, please follow these practical recommendations:
Runout Inspection – Before mounting, always measure the tool runout. If the runout exceeds 0.01mm, correct it prior to cutting to ensure precision and prolong tool life.
Minimize Overhang – Keep the tool extension from the holder as short as possible. If a longer overhang is unavoidable, reduce the spindle speed, feed rate, or depth of cut accordingly to suppress chatter.
Abnormal Conditions – Should you notice unusual vibration or noise during cutting, immediately lower the speed and feed parameters until the situation stabilizes, then gradually resume normal settings.
Cooling Strategy – For steel materials, air blast or mist cooling is preferred to achieve optimal chip control and tool performance. For stainless steel, titanium alloys, or heat-resistant alloys, we recommend using a water-soluble or neat cutting fluid.
Feed Rate Optimization – The provided cutting parameters are starting values. Once the cutting process becomes stable, you may increase the feed rate by 30%–50% to further enhance productivity.
Typical Application Fields
This versatile roughing end mill is widely used across various industries, including:
- Mold & Die Manufacturing – for roughing cavities and cores in tool steels.
- Aerospace – for machining aluminum, titanium, and heat-resistant superalloys.
- Automotive – for production line machining of engine and chassis components.
- General Engineering & Precision Parts – suitable for alloy steels, carbon steels, copper, plastics, and more.
- Electronics – for small precision molds and components.
Standard Size Specifications
| Flute Diameter (mm) | Flute Length (mm) | Head Diameter(mm) | Overall Length (mm) | Number of Flutes |
|---|---|---|---|---|
| 4 | 10 | 4 | 50 | 3/4 |
| 6 | 16 | 6 | 50 | 3/4 |
| 8 | 20 | 8 | 60 | 3/4 |
| 10 | 25 | 10 | 75 | 3/4 |
| 12 | 30 | 12 | 75 | 3/4 |
| 16 | 40 | 16 | 100 | 3/4 |
| 20 | 45 | 20 | 100 | 3/4 |
Note: These are standard stocked sizes. Custom specifications are available upon request—please contact our sales team for details.
Company Profile
Founded in 2015, MSK (Tianjin) International Trading Co., Ltd. has pursued a path of consistent growth and continuous process improvement. The company secured Rheinland ISO 9001 certification in 2016, underscoring its compliance with internationally recognized quality standards. Our production operations rely on a collection of world‑class machinery, including German‑made SACKE five‑axis precision grinding centers, ZOLLER six‑axis tool measuring systems, and PALMARY grinding equipment from Taiwan. By leveraging these advanced manufacturing assets, we are dedicated to producing premium‑grade CNC cutting tools that combine superior performance, technical professionalism, and high efficiency for diverse industrial applications.
