Durable Micro End Mill Tool for Precision Cutting Applications

A 65-degree small-diameter milling cutter is a type of end mill specifically designed for small hole machining and die corner cleaning. Its most distinctive feature is the 65-degree point angle of the tool, which forms a very sharp cutting edge. This design enables it to achieve superior performance when machining corners in hard-to-reach areas like deep cavities and narrow slots, compared to milling cutters with other point angles (such as the common 90 degrees).

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Product Description

Key Features

Extremely High Precision: The tools themselves are manufactured to micron-level tolerances to ensure the dimensional accuracy of machined features.

Exceptional Rigidity: To resist cutting forces and prevent breakage at such small scales, they are typically made from micro-grain carbide or powder metallurgy high-speed steel (PM-HSS). They are often coated with wear-resistant coatings (e.g., TiAlN, Diamond-DLC).

Specialized Geometry: Cutting edges are specially strengthened, and core diameters are optimized (e.g., with a variable core design) to achieve the best balance between chip flute space and rigidity. Two-flute designs are common for finishing, while single-flute or three-flute designs are used for specific materials and requirements.

Demanding Application Requirements: They must be used with high-performance CNC machines, high-precision tool holders (e.g., hydraulic or thermal shrink fit holders), and a stable machining environment (vibration-free). High-speed spindles (>20,000 RPM) and precise coolant delivery are often essential.

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