hrc55 2 flute long neck flat end mill

SAMHO HRC55 2-Flute Long-Neck Flat End Mill — High-Efficiency Solution for Deep Cavity Machining

High Hardness (HRC55) for Wear Resistance and Stability
This HRC55 flat end mill bit is made from premium carbide. It offers excellent wear resistance and strong anti-chipping performance. Ideal for stable machining of medium-to-high hardness materials.

2-Flute Design for Smooth Chip Evacuation
The 2 flute long neck end mill provides larger chip clearance. It improves chip evacuation and reduces chip buildup. This makes it especially suitable for stainless steel and mold steel machining.

Long-Neck Design for Deep Cavity Machining
The extended neck allows efficient machining of deep holes, deep slots, and complex contours. It reduces interference and increases machining flexibility.

High-Precision Shank for Stable Clamping
The shank tolerance is controlled within 0 to -0.003 mm. This ensures excellent concentricity and secure clamping. It improves machining accuracy and extends tool life.

Wide Material Compatibility
Suitable for materials from HRC28 to HRC52, including mold steel and stainless steel. Widely used in mold making, precision components, and general machining applications.

HRC55 2-Flute Long-Neck Flat End Mill — Professional Usage Recommendations

Optimize Cutting Parameters
Adjust spindle speed and feed rate based on material hardness (HRC 28–52). Avoid excessive cutting load to maintain tool stability and extend tool life.

Prioritize Deep Cavity and Finishing Operations
The 2 flute long neck end mill is designed for deep holes, deep slots, and complex contours. It is recommended for semi-finishing and finishing operations to achieve better surface quality.

Improve Chip Evacuation Efficiency
When machining stainless steel or mold steel, ensure effective chip removal. Cutting fluid or air cooling is recommended to prevent chip buildup and tool adhesion.

Ensure High-Rigidity Clamping
Use a high-precision tool holder to ensure stable clamping. Keep tool overhang as short as possible to reduce vibration and improve machining accuracy.

Avoid Heavy Side Cutting Loads
Due to the lower rigidity of long-neck tools, avoid heavy radial cutting or impact machining. A multi-pass or layered cutting strategy is recommended for stable performance.