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Zund R31 3910421 Triple-Flute CNC Milling and Router Bit

The Zund R31 Spiral Milling Bit, also known as Router Bit 3910421, is a high-quality tool specifically designed for woodworking applications. Ideal for precision cuts and efficient performance, this versatile bit is now available for purchase at competitive prices. It is compatible with a range of e…

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Zund R31 3910421 Triple-Flute CNC Milling and Router Bit

Key Specifications

Part Number: 3910421
Material: Tungsten carbide (up-cut, triple flute / Z=3)
Shank Diameter: 3 mm
Routing Diameter (Ø): 1.5 mm
Tool / Cutting Length (SL): 38 mm total length / 5 mm max cutting depth
Primary Application: Precision milling and machining of hard brass and related non-ferrous materials.

Key Structural & Operational Benefits
High-Load Flute Geometry: The triple-flute profile provides exceptional rigidity, minimizing tool deflection when cutting rigid materials like brass.
Variant Availability: This milling bit is available as a standard cylinder or with an integrated stop ring ("A" variant), allowing it to interface with the Zund Automatic Router Changer (ARC) without manual height calibration.
Zund Spindle Support: It is fully optimized for high-speed operation within the Zund Universal Routing Tool (URT) and the Zund 3.6 kW RM-L Routing Module.

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