Introduction
PFERD has introduced new tungsten carbide burs, specifically designed for tough applications involving high impact loads. These burs, named 3R and 3RS, are optimized for hand-held applications and are characterized by their exceptional impact resistance and performance.

Specifications
The 3R and 3RS burs feature special cut patterns that minimize tooth chipping, breakage, and bur head failures. They are suitable for heavy-duty applications in shipyards, foundries, and steel construction. The burs maintain high stock removal capability throughout their service life, even at low RPMs.

Cut Patterns
- Double Cut (3R): Cross cut for coarse and aggressive machining with high stock removal.
- Diamond Cut (3RS): Cross cut for coarse machining with smoother operation, less aggressive than 3R.

Advantages
- Reduced risk of damage or failure in hand-held applications.
- Less vibration and tooth breakage at below-recommended operating speeds.

Distribution
The burs are supplied in single-unit packs with protective plastic boxes. They are clearly marked with "New" for easy differentiation.

Recommendations for Use
The document provides recommended cutting rates and rotational speeds for different material groups, including non-hardened steels, hardened steels, and cast iron. Safety notes emphasize the use of safety goggles, ear protection, and rigid clamping systems.

Standard Shapes
The document lists various standard shapes for the burs, including cylindrical, ball, oval, tree, and taper shapes, each with specific applications such as contouring, deburring, and surface milling.

Special Ordering
PFERD offers special ordering options for burs with long shanks or specific dimensions. These are suitable for hard-to-reach areas and can be customized with different shank diameters, shapes, and cuts.

Conclusion
PFERD provides a comprehensive range of tungsten carbide burs designed for high-performance and durability in demanding applications. For more information, customers are encouraged to contact PFERD's customer service or refer to their catalog.