Manufactured using ultra-fine tungsten grades, designed for high-rate metal removal, slotting, and surface finishing of heavy industrial cast steels.
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Engineered for ultimate dimensional tolerance and structural rigidness. Excellent for hard metal drilling and CNC automated machining lines.
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Featuring optimal custom geometry for smooth contour transitions and complex fillet profiling. Provides an outstanding surface micro-finish.
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Designed for multi-directional swarf removal and internal radius blending. Excellent thermal dissipation reduces material galling.
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Perfect for narrow-angled profiling, deep cavity access, and removal of thick flashings. Features optimized cross-fluting designs.
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A versatile utility cutter combining radial nose deburring with cylindrical side-cutting properties. Designed for tough heavy alloys.
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Engineered with micron-grain carbide substrates for maximum hardness and stability. Outstanding performance in high-speed 3D milling.
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Optimized chip flow spacing for outstanding slotting capability. Promotes clean finishes in carbon and alloyed steels.
Learn MoreFounded in 2004, our company stands as a premium manufacturer of tungsten carbide products, specialized in creating customized solutions for challenging industrial environments. Headquartered in Guanghan, Sichuan Province, China, we operate state-of-the-art facilities dedicated to producing industrial grinding heads, solid carbide end mills, and structural wear parts.
We work with global leaders across various manufacturing disciplines. Leveraging advanced 5-axis CNC grinding machines, automated dry presses, and vacuum-sintering ovens, we deliver tools engineered for extreme operational lifespan and dimensional accuracy.
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In modern industrial fabrication, precision, reach, and material removal rates are critical key performance indicators (KPIs). Custom long shank carbide burrs have become a crucial component in heavy manufacturing, aerospace maintenance, mold fabrication, and automotive porting. Designed with extended shanks—typically ranging from 100mm to 300mm or more—these specialized tools allow operators and robotic arms to reach hard-to-access interior cavities, complex manifold structures, and recessed welds that standard-reach tooling cannot touch.
Tungsten carbide itself is a compound consisting of equal parts tungsten and carbon atoms, renowned for its exceptional hardness (often rated at 90+ HRA) and thermal stability up to 1200°C. By brazing or solid-forming these durable cutter heads onto high-tensile steel shanks, manufacturers create a high-precision rotary tool capable of running at speeds exceeding 30,000 RPM without losing structural integrity or deflection resistance.
"For safety and operational efficiency, standard-reach burrs are insufficient for deep pocket casting cleaning. Long shank carbide burrs must be designed with precise dynamic balance to counter harmonics at high rotational velocities."
Selecting the ideal long shank carbide burr requires understanding the mechanical stresses involved during high-speed rotation. Long shafts are prone to catastrophic deflection (bending) if operated at speeds exceeding their critical safety limit. The table below outlines the core characteristics of standard vs. custom long-shank rotary tools:
| Parameters | Standard Shank Burrs (50mm - 75mm) | Extended Long Shank Burrs (150mm - 300mm+) | Custom-Balanced Precision Burrs |
|---|---|---|---|
| Operating RPM | 20,000 - 35,000 RPM | 12,000 - 22,000 RPM (Highly dependent on length) | Custom set based on target application specs |
| Runout Tolerance (T.I.R.) | < 0.05 mm | < 0.02 mm (Requires special brazing alignment) | < 0.01 mm for CNC-driven robotic applications |
| Vibration Harmonics | Low risk of flexing | Moderate-to-high risk if unguided or unbalanced | Squelched via dampening cores or thicker shanks |
| Key Industrial Uses | Standard weld dressing, chamfering | Deep pocket casting cleaning, cylinder head porting | Automated aerospace robotic deburring and carving |
China accounts for over 80% of the world’s raw tungsten mining and ammonium paratungstate (APT) output. Sourcing directly from Sichuan-based manufacturers guarantees uninterrupted access to premium cobalt binders and pristine raw tungsten ore.
Advanced five-axis CNC fluting setups permit mass customization with rapid turnaround times. Automated operations lower unit costs without sacrificing geometric accuracy, outperforming traditional manufacturing plants.
B2B procurement programs are fully integrated, from custom cutting head profiles (cylindrical, ball-nosed, flame, tree shape) to bespoke overall lengths, specialized protective coatings, and tailored packaging solutions.
Modern commercial aviation turbines incorporate complicated airfoils and internal cooling passages. Accessing combustion liners and stator vanes to clean soot build-up, remove high-temperature slag, and dress micro-cracks requires specialized ball-nose tree shape burrs on 200mm+ shanks to avoid dismantling entire rotor sections.
Precision tool-and-die shops rely heavily on our Type E and Type F burrs to finalize complex runner blocks. Deflection during EDM processing must be hand-corrected or custom-profiled in deep recesses. Long-reach, dynamically balanced burrs keep surface roughness down to sub-micron thresholds.
Deburring internal pipeline weldments inside double-walled vessel structures is highly physically restrictive. Using long-reach tools lets workers clean out root-pass weld spatter comfortably, improving fluid transport safety and extending hull longevity.
Engine-building specialists know that volumetric efficiency hinges on flow dynamics in the intake and exhaust ports. Smooth transition curves through critical throat boundaries are achieved only with customized long-reach oval or cylindrical rotary burrs.
Our raw material starts with blending submicron tungsten carbide powder, active cobalt binders, and custom rare metal dopants in a slurry containing aviation gasoline and heavy alloy grinding balls, assuring perfect grain distribution.
We dry the wet slurry, safely reclaiming the carrier solvents. We then introduce specific temporary organic lubricants and screen the micro-granules to optimize pressing flowability.
The formulated powder is loaded into custom-profile dies. Under massive multi-ton automated pressure, the grains lock together to form high-density "green" carbide shapes.
The green shapes undergo hot isostatic pressing (HIP) sintering at temperatures above 1,400°C. Sintering achieves 99.9% structural density and locks in final tool hardness.
Sintered blanks are brazed onto steel shanks. Advanced ANCA and Walter 5-axis CNC grinding machines then cut sharp, double-cut or single-cut flute profiles directly into the carbide.
Every single customized long-shank burr is checked for dimensional accuracy, dynamic runout, concentricity, and metallurgic consistency via digital microscopes prior to delivery.
Every long shank burr undergoes testing on modern dynamic balancing rigs to prevent dangerous high-frequency vibration during handheld and automated use.
Our dual-stage induction silver brazing achieves optimal joint shear strength, eliminating the risk of cutting heads detaching from extended shanks.
We formulate carbide compositions in-house to balance extreme impact resistance and high wear resistance, matching the grade to your specific workpiece material.
Our double-cut and aluminum-cut geometries prevent chip packing during deep blind-hole operations, extending tool lifespan and productivity.
Our facility has adopted closed-loop water filtration and organic solvent recycling systems. This step significantly lowers emissions and resource consumption during the early ball-milling stages.
Global supply fluctuations require closer supply chain management. By using local high-grade reserves, we secure reliable pricing and steady lead times for B2B contracts.
New cutting edge designs reduce operational friction and heat build-up. These geometry changes increase drilling efficiency by up to 25% on stainless steel workpieces.
Crafted for detailed engraving and micro-milling. The pointed tip design ensures sharp contours on brass, composite panels, and soft alloys.
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Features aggressive flute spacing to prevent chip buildup on soft non-ferrous metals. Essential for foundry and aluminum plate work.
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Blends tree shape profiling with radial nose ends. Designed to mill tight radii and steep interior walls with reduced tool vibration.
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A balanced general-purpose series for cutting and finishing. Optimized for compatibility with pneumatic hand-held grinders.
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Engineered for high accuracy inside milling paths. Helps prevent edge chipping on acrylic, polymers, and non-ferrous materials.
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Made from M35/M42 grade cobalt alloys to improve heat resistance. Ideal for drilling through tough cast irons and stainless steel.
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Optimized for high-speed machining of plastic composites and soft aluminum sheets. Large flute space supports fast chip evacuation.
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Designed for finishing work inside narrow slots and chambers. Reduced neck profiles help avoid friction against sidewalls.
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N&D Carbide