Grewin Jin Niu N-Type Rotary Burr — The Ideal Choice for Efficient Rough Machining

Product Overview

The Grewin Jin Niu N-Type rotary burr features a round-nose tapered design, enabling it to handle both inclined and curved surfaces simultaneously.
It is particularly suitable for machining complex transition areas, as well as large workpieces and difficult-to-machine materials. The N-Type burr ensures rapid stock removal while maintaining excellent machining stability, making it an ideal tool for high-efficiency roughing operations.

Key Features

• Premium Material: Made of tungsten carbide, the industry’s leading and most reliable material, with exceptional hardness, wear resistance, and heat resistance. Supports high-speed cutting with long service life.
• High Performance: Delivers outstanding cutting efficiency, superior vibration resistance, and durability.
• Unique Design: Round-nose tapered shape with cross-cut mesh pattern allows for effective machining of both inclined planes and curved/deep cavity surfaces.
• Wide Application Range: Suitable for machining metals with hardness ≤ HRC55 (carbon steel, alloy steel, stainless steel, etc.).

Applications

• Mold manufacturing (complex cavities and transition surfaces)
• Aerospace
• Medical instruments
• Heavy machinery manufacturing
• Welding and casting industries

Technical Standard

• Manufactured according to ISO 7755-1984(E)
• Available in 12 models and 78 specifications of tungsten carbide rotary burrs
• Supports custom production, trial manufacturing based on samples, and non-standard customization

Case Study

Precision Machining of Complex Mold Cavities
Mold cavities often involve transition surfaces combining both inclined and curved geometries, where ordinary tools fail to achieve smooth blending. The N-Type double-cut rotary burr, with its round-nose tapered shape, can handle both types of surfaces effectively. This enables efficient machining of complex transitions, significantly improving mold surface quality and processing efficiency.

Operation & Maintenance

• Moderate Pressure: Avoid excessive force to prevent overheating or premature wear (reduce speed when using extended burrs).
• Speed Control: Designed for high-speed operation; follow recommended RPM and adjust based on material type.
• Safety Protection: Always wear safety goggles and cut-resistant gloves to protect against flying chips.
• Regular Cleaning: Remove residual chips frequently to maintain optimal cutting performance.

Advantages at a Glance

• Rapid rough machining and stock removal
• Strong and durable with sharp cutting edges, leaving no burrs
• Heat-resistant and wear-resistant for stable long-term performance
• A top choice for metal grinding and finishing tasks