4 Flute Square End Carbide End Mill TiSiN HRC 60

4 Flute Unequal Pitch Carbide End Mill for High-Efficiency Steel Machining

Designed for demanding CNC milling applications, this 4 Flute Unequal Pitch Carbide End Mill delivers exceptional performance in steel, stainless steel, mold steel, and pre-hardened materials up to HRC60. Manufactured from premium ultra-fine grain solid carbide and enhanced with an advanced TiSiN coating, this cutter combines outstanding wear resistance, cutting stability, and long tool life for modern high-speed machining environments.

The short flute design significantly increases tool rigidity, allowing higher feed rates while minimizing vibration and tool deflection. Combined with the unequal pitch geometry, the cutter effectively suppresses harmonic chatter, resulting in smoother cutting action, improved surface finish, and greater dimensional accuracy.

This end mill is particularly suitable for high-efficiency roughing, semi-finishing, and finishing operations where stability and productivity are critical. The robust cutting edge design enables aggressive metal removal while maintaining excellent tool life and machining consistency.

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Premium Solid Carbide Construction

Manufactured from high-quality micro-grain tungsten carbide, the cutter offers excellent hardness and toughness. The superior substrate provides the rigidity required for machining difficult materials while reducing the risk of edge chipping during heavy cutting operations.

Benefits include:

• Higher wear resistance
• Increased rigidity
• Better thermal stability
• Longer service life
• Consistent machining accuracy

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Advanced TiSiN Coating Technology

The high-performance TiSiN coating creates a protective barrier between the cutting edge and workpiece material. This coating is specifically designed for steel machining applications where elevated cutting temperatures are common.

Advantages of the TiSiN coating include:

• Improved heat resistance
• Reduced friction
• Enhanced oxidation resistance
• Better wear performance
• Increased cutting speed capability

The result is a cutter capable of maintaining sharp cutting edges for longer periods, reducing downtime and tooling costs.

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Unequal Pitch Geometry

Unlike standard end mills, the unequal pitch flute design reduces cutting harmonics and suppresses vibration during machining.

Key benefits:

• Reduced chatter
• Improved surface finish
• Higher machining stability
• Better dimensional consistency
• Increased metal removal rates

This feature becomes particularly valuable when machining deep walls, narrow cavities, or large workpieces where vibration can negatively affect machining quality.

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Short Flute Design for Maximum Rigidity

The short cutting edge length is optimized for maximum tool strength. Compared with long-flute cutters, this design offers significantly improved rigidity and reduced deflection.

Ideal for:

• High-feed milling
• Precision side milling
• Shoulder milling
• Slot milling
• Cavity machining

The enhanced rigidity allows the cutter to maintain accuracy even under demanding cutting conditions.

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Typical Applications

This cutter is commonly used for:

Slot Milling

High-precision slot machining with excellent wall finish and dimensional accuracy.

Side Milling

Efficient peripheral milling for contours, profiles, and external surfaces.

Shoulder Milling

Accurate 90-degree shoulder machining with excellent edge quality.

Pocket Milling

Efficient cavity machining for mold components and precision parts.

Semi-Finishing Operations

Removal of remaining stock prior to finishing.

Finishing Operations

High-quality surface generation on steel and stainless steel components.

Advantages

• High rigidity short flute design
• Unequal pitch anti-vibration geometry
• Premium solid carbide substrate
• Advanced TiSiN coating
• Excellent wear resistance
• Long tool life
• High metal removal rate
• Superior surface finish
• Stable machining performance
• Suitable for modern CNC machining centers