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Zund R21 3910701 Router Milling Bit On Digital Cutting Tables
Zund R21 Milling & Router Bits (3910701) are designed to be fully compatible with Zund Routing Systems. These high-quality bits are engineered for precision and durability, making them an excellent choice for your milling and routing needs.xplore review Enquire now
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Zund R21 3910701 Router Milling Bit On Digital Cutting Tables
Zund R21 Router Bit (Item Number 3910701) is an OEM solid carbide spiral milling bit designed for precise, low-vibration machining on digital cutting tables. Unlike the single-flute R13 through R17 variants, the R21 features a two-flute (double-edged) configuration. This design provides superior structural rigidity and balances cutting forces, making it optimal for cutting thin sheets of harder metals and plastics without introducing edge burrs. 

Core Technical Specifications
The R21 is engineered with balanced micro-geometries to handle high rotational stresses: 
  • Routing Diameter (Cut Ø): 1.6 mm
  • Max Routing Depth: 8.0 mm
  • Shank Diameter: 1/8" (3.175 mm)
  • Total Length: 38 mm
  • Number of Cutting Edges: 2 Flutes (Up-cut / Right-hand twist)
  • Maximum Rotation Speed: 80,000 RPM 

Recommended Materials
The double-flute design distributes the cutting workload across two edges, reducing the chip load per tooth. This makes the R21 highly effective for:
  • Aluminum: Thin aluminum sheets, aluminum foils, and light alloys (frequently paired with a lubrication mister).
  • Plastics & Synthetics: Cast and extruded Acrylic (PMMA), Polycarbonate, and dense engineering plastics.
  • Composites: Highly intricate profiling on thin ACM / Dibond panels where single-flute bits might create too much vibration. 

Spindle & Module Integration
The R21 bit is fully supported by the Zund Cut Center (ZCC) software workflow and operates within standard automated routing modules: 
  • Compatible Spindles: High-speed PN 150W and 450W spindle modules, as well as the Universal Routing Tool (URT).
  • Supported Cutting Tables: Integrates natively with the tool management systems of the Zund G3, S3, and D3 flatbed cutters. 

OYEA Knives manufactures and supplies a full line of both STANDARD and CUSTOM leather cutting knives and blades. All of our standard leather cutting knives are manufactured to exceed the exact OEM standards.  

If you have more questions to know ,please contact us . 
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We warmly welcome every customer to send us drawings for making customized product.  Contact with us ,you will get more than what you can !

Zund R21 Milling and Router Bits 3910701 are designed for seamless compatibility with Zund Routing Systems, catering to production, manufacturing, and wholesale demands. Oyea Machinery Co., Ltd.  a comprehensive selection of consumables, spare parts, and equivalent replacements, ensuring reliable solutions for various applications. Explore their catalog through Webshop | MyZund.
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