Syndent Flexible Shaft Carbide Burrs

  • More than 11 years manufacturing experience
  • Manufacture your flexible shaft carbide burrs in advanced CNC machine
  • Pointed supplier of FORTUNE 500 companies
  • Strict quality control during every manufacturing process
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Flexible Shaft Carbide Burrs

Syndent Flexible Shaft Carbide Burrs

Syndent flexible shaft carbide burrs are best metalworking tools that allow you to make precise castings in difficult-to-reach positions.

We manufacture quality self-adjustable shank carbide burrs with various elasticities for excellent performance.

As a global producing firm in China, Syndent’s R&D fully meets various industrial needs with your deburring tools.

Syndent provides excellent after-sales services with a promised output of flex shaft tools to help you always get compliments from business.

We produce your flexible shaft carbide burrs using 6-axis high-end CNC machines. Experience fast, safe, and convenient delivery by purchasing from us.

Flexible Shaft Carbide Burrs

Cylinder radius end flexible shaft carbide burrs.

Flexible Shaft Carbide Burrs

Ball shape flexible shaft carbide burrs.

Flexible Shaft Carbide Burrs

Oval flexible shaft carbide burrs.

Flexible Shaft Carbide Burrs

Tree radius end flexible shaft carbide burrs.

Flexible Shaft Carbide Burrs

Taper radius end flexible shaft carbide burrs.

Why Syndent Flexible Shaft Carbide Burrs

Syndent flexible shaft carbide burrs are great in cleaning complex castings and other unwanted materials. You can universally use our flexible shank burs for cleaning pump housings, impellers, and other castings.

Our flex shaft carbide burs ideally clean welding, burnt sand, inner pipes, fins, and various blending procedures.

You can use our flexible shaft die grinder in Aerospace manufacturing, automotive manufacturing, etc. Reach those complex positions easily with Syndent adjustable shaft carbide burrs.

Syndent operates on an anchored enterprise structure that gives a rock-solid supply chain. Our firm is among the earliest Chinese firms to implement and use CNC equipment. The flexible shaft carbide burrs you purchased are always at leading industry levels.

Our flexible shaft carbide burrs have United States’ Stork Herron Testing Laboratory competent inspection. The adjustable shank carbide burrs purchased meet various industrial complex standards.

We’re amidst substantial producers of flexible shaft carbide burrs and other products in China. Our firm is on a 2,000 square meters area of operation.

Syndent has close to 50 highly skilled staff. Additionally, we use close to 40 state-of-the-art six-axis machines. We can extravagantly produce and deliver you flexible shaft carbide burrs quickly.

Flexible Shaft Carbide Burrs material

Syndent will check the raw material specifications of flexible shaft carbide burr before production.

Flexible Shaft Carbide Burrs brazing

Syndent automatically brazes flex shank carbide burr with silver in a low temperature

Flexible Shaft Carbide Burrs balance

We must make the jumping test of flex carbide burr after brazing. The tolerance is less than 0.1mm

Flexible Shaft Carbide Burrs bending

Syndent examines the shank hardness of flexible carbide burr after brazing, and tests the bending strength

Flexible Shaft Carbide Burrs shaping

Solid flexbile carbide burr needs a shaping process from the carbide rod materials

Flexible Shaft Carbide Burrs toothing

Syndent CNC grinds the teeth of flexible shank carbide burr after the tests approved

Flexible Shaft Carbide Burrs polishing

Syndent polishes the shank of carbide burr for its brazing position to have a well looking.

Flexible Shaft Carbide Burrs package

Syndent makes your logo on the Flex carbide burr, and sticks your own label on the case.



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  • Syndent has all the popular carbide cutters and shapes. Succeed in helping many customers save costs in the past decades.

  • Range from the dental laboratory to clinic purpose. Either a dental technician or dental doctor could find what you demand here.

  • You have creative nails through Syndent amazing nail carbide burrs. We can do better and think about what you think.

Your Best Supplier of Flexible Shaft Carbide Burrs

Our flexible shaft carbide burrs include various industry sizes and models. We produce coarse grinding, aluminum grinding, grinding, etc. Sizes range between 8mm and 30mm head diameters. Syndent can guide you to find the right size or model for your various applications.

Syndent produces long-lasting products with guaranteed sharp cutting power. Additionally, our prices must range within your budget. We always balance between top-notch quality, longevity, and affordability.

Syndent provides anchored and harmonious quality of our flexible carbide burrs. From the samples sent to the final product, Syndent maintains consistency.

We’ve got a fifteen-year-plus experience in the rotary files field. We serve all our customers with high esteem and honesty.

Syndent incorporates a cross-check system that enables us to trace every production level of our flexible carbide burrs. We can manufacture high-tech grinding heads at all times.

Syndent endeavors to meet various payment alternatives for our clients. Even if you are a smaller buyer, we can work with multiple providers like PayPal, Western Union, MoneyGram, T/T, etc. We cater to your payment safety and convenience.

Besides flexible shaft carbide burrs, Syndent offers rotary file sets, solid carbide burrs, carbide burr for steel, etc.

If you incur anomalies using our product or wish to order, don’t hesitate to get in touch with us

Flexible Shaft Carbide Burrs: A Conclusive FAQ Guide for Investors

Offer great help to clean specific machinery positions that are difficult to reach in a straight way, especially in aerospace, auto, and motor industries and sometimes at home.

You know, finding the right flexible shank burr to clean the machinery seems like a hard nut to crack. However, our comprehensive FAQ describes how you can do it and the tools you can use.

What is a Flexible Shank Carbide Burr?

Flexible shaft carbide burrs describe versatile instruments for specialty cleaning pump housings, pump impellers, and all casting parts.

In addition, flexible shaft carbide burrs can clean any welding, burnt sand, inner pipes, fins, etc. You can also use flexible shaft carbide burrs for any blending operation.

flexible shaft carbide burrs

A Flexible Shaft Carbide Burr

The unique and quality design of flexible shaft carbide burrs enables the user to remove castings fluently. You can easily remove castings in challenging positions other standard or long-shank carbide burrs cannot reach.

With flexible shank carbide burrs, you can quickly grind hardened metals like alloy steel, stainless steel, hardened steel, etc.

Syndent is an established manufacturing company in China that produces quality and durable, flexible shank carbide burrs since 2010.

Fundamentally, we use K25 grade tungsten carbide raw materials, silver slices, for the manufacturing process. Hence, Syndent flexible shaft carbide burrs have guaranteed quality for your precise and quality work.

Based on the unique technology, we braze flexible shaft carbide burrs through advanced welding equipment automatically.

Moreover, we precisely design the cutters using ultra-modern CNC machines so that you enjoy quality work using our carbide burrs.

The automatic brazing system guarantees excellent balance and welding power of your burs. In addition, advanced CNC machines ensure the highest consistency.

Flexible shaft carbide burrs come in a range of lengths, including 150mm, 200mm, 300mm, 400mm, 600mm, etc. The shank diameter sizes fundamentally fit the most popular rotary tools like Bosch, Dremel, etc.

Also, you’ll find our flexible shaft carbide burrs in different shapes, such as oval, flame, cone, ball, cylinder, etc. Consequently, you will manage various demanding tasks with extreme perfection.

Syndent flexible shaft carbide burrs come in two popular cuts, including single and double. However, you might also find an aluminum cut used often in soft metal area because of its openness to recent technologies. Each type of cut operates differently to produce varied results.

The shank/shaft of the flexible carbide burrs flexes, unlike rigid rotary filescarbide burrsdie grinder bits, etc. For that reason, you can conveniently maneuver the tool and reach places other rigid metalworking tools won’t go. They bend around any obstruction so that you can quickly get hard-to-reach spots.

How Does a Flexible Shaft Carbide Burr Help in Metal Processing?

Flexible shaft carbide burrs help to process metal in different ways like clipping, polishing, finish machining, casting, etc. Fundamentally, metal processing requires a tool with extreme hardness and strength.

Syndent flexible shank carbide burrs are more aggressive than what our peers make.

The most difficult matter is how to get the same cutting flutes as the standard burr head. Syndent uses American manufacturing technology to fabricate flexible shaft carbide burrs including the nice brazing strength of flex shank.

Because tungsten carbide shows more rigid than steel, the flexible shank burrs can fluently cut tough metals in a neat method.

Consequently, tungsten carbide can tolerate extreme temperatures. In addition, flexible shaft carbide burrs can sustain sharp cutting edges under any kind of curvature.

And you can use them to process narrow-position’s metals repeatedly without losing the sharpness, thanks to their toughness and flexibility.

Flex shaft carbide burrs can help you process different types of metals through cleaning, deburring, shaping, grinding, etc.

Consequently, the kind of shank needed do not limited to the rotary (handpiece) used. We have adaptors for your choice. In addition, the cutting style or head shape you choose depends on the process required.

Flexible shaft carbide burrs can help to process metals in the following ways:

  • It helps in clipping impeller runners, for example, in car engines.
  • It helps in processing metallic pipes.
  • It assists in polishing the metallic surfaces of inner holes on most mechanical components.
  • They offer routing and groove-processing of metallic mechanical parts, especially in repair shops or machine makers.
  • It helps in finishing machining metal mold chambers like shoe molds.
  • Flexible carbide burrs help in processing hand-made presents by carving various metals.
  • Flex shaft tools help remove welded seams, burrs, and flashes from forged, cast, and welded components. Hence, flexible shaft carbide burrs remain helpful in automotive manufacturing, aerospace manufacturing, shipyards, machine foundries, etc.

Different metal fabricators use flexible shaft carbide burrs as deburring tools. During processing, flexible shank carbide burrs remove burrs, burs, or sharp edges from metals. Hence, the edges of the metal remain smooth and safe to handle.

Most engineers and fabricators can use flexible shaft carbide burrs without any difficulties.

Which Types of Metal Processing Applications Can You Use Flexible Shank Carbide Burrs?

Flexible shaft carbide burrs can process metal differently, like deburring, casting, shaping, grinding, etc.

Flexible shaft carbide burrs can do the following types of metal processing:

  • Inner pipe cleaning.
  • Deburring (removing burrs, burs, or sharp edges).
  • Milling (removing extra materials from a large workpiece).
  • Cutting – flexible shaft carbide burrs can slice, shape, or size a given workpiece.
  • Clean castings such as pump castings, pump impellers, or turbine blade assemblies.
  • Enlarging holes.
  • Removing weld seams and leveling. Therefore, they produce an even and smooth surface.
  • Grinding – an industrial process of eliminating unnecessary extra parts of materials from metal.

What’s the Comparison between a Flexible Carbide Burr and A Rigid Shank Carbide Burr?

A flexible shaft carbide burr looks quite different from a rigid shank carbide burr in that the shank bends. Therefore, metal processing appears convenient even in closed positions of the metal.

flexible shaft carbide burrs

Helpful to use in hard-to-reach areas

On the other hand, a rigid shaft carbide burr has a shaft that doesn’t bend. Hence, reaching certain positions may appear unmanageable even with a tiny or long shank carbide burr.

A flexible shaft carbide burr and a rigid shank carbide burr have the same material components; tungsten carbide. That means the grinding heads of the burrs have the same rigidity.

Because of the unique design of the shank, flexible shaft carbide burrs will offer specialty functions. For instance, you’ll use the burrs for cleaning impellers, pump casings, or castings.

In addition, flexible shaft carbide burrs also help clean welding, fins, burnt sand, inside pipes, etc.

Like rigid shank carbide burrs, flexible shaft carbide burrs can have various coatings. For example, they can have TiN coating, TiCN coating, TiAlN coating, diamond coating, etc.

Also, the two burrs can process various types of metals like stainless steel, aluminum, titanium, etc.

Both flexible shaft carbide burrs and rigid shank carbide burrs come in various handy shapes and sizes. Thus, the user meets all challenging operations the metal demands.

Can You Use a Flexible Shank Carbide Burr with Different Rotary Tools?


Syndent flexible shank carbide burrs run true in die grinders. But they can fit different rotary tools on the market today. So our standard size will essentially fit tools like:

  • Die grinders.
  • Dremel Drills.
  • Micro Motors.
  • Pneumatic rotary tools.
  • Drills.
  • High-speed engravers.

No matter the type of rotary tool you choose, it should always run right with the flexible shaft carbide burr. That means it shouldn’t wobble but run smoothly.

Which Safety Tips Should You Consider When Using a Flexible Shank Carbide Burr?

Before and during the application, ensure your safety and that of the flexible shaft carbide burr to minimize accidents.

First, your safety remains paramount because of the high gravity of adjustable shaft carbide burrs.

Additionally, maintaining the quality and durability of flexible shaft carbide burrs and the workpiece requires maximum care.

However, putting the following safety tips into consideration comes in handy in ensuring everything goes well;

  • Before switching the power on, position flexible shaft carbide burrs on a workpiece. Or insert them in a bore or groove.

And for further safety reasons, we advocate for reduced idling RPM by up to a third of the normal values.

  • Operate with maximum speeds and not below 3000 RPM. However, use a low grinding rate for exceptional cases like countersinking with a fully submerged burr or stationary machines.
  • When grinding imperfectly, heat-conducting metals like titanium alloys, stainless steel, etc., use appreciably lower RPM.
  • Grind at relatively high speed in light grinding applications like chamfering, light surface work, or deburring.
  • Use a small amount of pressure when processing metal or other materials with flexible shaft carbide burrs.

Otherwise, the sharp edges/flutes will easily chip away or dull. Hence, the lifespan of flexible shaft carbide burrs will reduce.

  • If you want flexible shaft carbide burrs to last, ensure you firmly fasten your work material in a robust workstation.

In addition, you safeguard yourself against potential harm from the tool or work material.

  • Always ensure that the shank of the flexible shaft carbide burr fits excellently in the collet of the handpiece.

Additionally, ensure you securely clamp the collet of the grinder. It guarantees the burr doesn’t move out of position when grinding materials.

  • When processing metal or grinding similar materials, make sure that the flexible shaft die grinder doesn’t grab something else.

Or, ensure the flexible shaft carbide burr doesn’t jam during any process. The cutting edges become dull over time when they stop or grab materials because of chipping.

  • Always keep flexible shaft carbide burrs in motion with 100% focus on the workpiece.

At the same time, put on the proper protective gear to protect your hands, eyes, and face against injuries.

  • While processing large materials, observe cautiousness because of the advanced gravity of flexible shaft carbide burrs.
  • While grinding materials, flexible shaft carbide burrs sometimes generate heat due to high friction. As a result, it may result in the twilight, and you might see the mist.

Consequently, if it lands in your eyes/skin if ingested or breathed, the condensation can cause severe damage. Therefore, proceed with high adherence to caution.

  • Ensure good ventilation when doing any processing with flexible shaft carbide burrs.

Which Factors Should I Consider When Choosing the Correct Shape & Size of a Flexible Shank Carbide Burr for Any Application?

Choosing the right shape or size of flexible shank carbide burrs depends mainly on the nature of the job. Besides, other factors can also determine the shape and size of a burr to use in an application.

flexible shaft carbide burrs

Different shapes

Choosing the right shape and size of flexible shank carbide burrs ensures the peak performance of the tool. Furthermore, you reduce the chances of the burr wearing out rapidly while presenting accurate results.

Flexible shaft carbide burrs can come in several popular sizes and shapes. Syndent designs the adaptor for the shank ends. You will save much time because of this gifted design because you no need to change the die grinders all the time.

You just consider the size of the grinding head may determine the kind of application of the burr on a workpiece.

The shape of the flexible shaft carbide burr plays a central function in its task. The shape relates to the flexible shaft carbide burr’s head. And the head of the burr usually meets the surface of the metal or material directly when grinding.

Take into account some of the following essential factors:

The nature of the job

Some applications will always determine the shape or size of flexible shaft carbide burrs to choose from.

For instance, grinding a metal in a very tight place allows you to select a small-sized burr. In such a case of fixed corners, a small pointed shape will work well than a flat or rounded burr.

On the other hand, removing heavy stock requires a slightly larger grinding head. Essentially, a large-sized burr makes the removal of heavy stock faster.

When processing an inner corner of a workpiece, select flexible shaft carbide burrs with a triangle shape.

They help create a smooth edge (thin surface) without cutting edges around the suitable angle surface.

The flat burr, on the other hand, helps in processing the inner right-angle area. As a result, you finish your work smoothly and safely without damaging the right angles.

Hardness of Material

The handress of the workpiece also lays a firm foundation on the size/shape of the burr required in processing.

For example, a stronger spring flexible shank carbide burr will be necessary to process a harder workpiece.

On the other hand, a smaller diameter shaft works excellently when grinding on a nonferrous surface.


Speed remains a crucial factor that can hugely affect the results of your workpiece tasks.

Flexible shaft carbide burrs on the market have varying shapes and sizes. Most importantly, the shapes or sizes operate at different RPMs when applied to a particular material.

Flexible shaft carbide burrs with small head and shaft diameters work at relatively high speeds when processing workpieces. They work effectively at such rates.

However, operating at high speeds requires a lot of practice and experience while achieve accurate results.

A flexible shaft die grinder with a large head and shank diameter functions well at low RPMs. It appears easy to control them at low grinding rates. And it ensures you process the workpiece accurately.

Does a Flexible Shank Carbide Burr Require Cleaning or Maintenance?


For effective and consistent performance, flexible shaft carbide burrs require correct cleaning. Usually, the flutes of flexible shank carbide burrs pick aluminum and other metal chucks.

When the particles stick between the flutes, they lose their strong cutting power. At the same time, uncleaned flutes may result in overheating. Therefore, you must clean the burrs properly to ensure they perform at their best.

You can clean flexible shaft carbide burrs manually or using recommended industrial solvents. Alternatively, apply manual and solvent cleaning to eliminate dirt.

Manual Cleaning

When applying manual cleaning, we suggest you use a brush designed from brass wire. Such a brush will not produce sparks when you rub it on a metallic surface like carbide. Moreover, besides conducting electric energy perfectly, brass wire brush does not rust.

The manual cleaning method with a brass wire brush takes time but eliminates any spot of dirt and dust particles. And once you brush off the particles, the cutting teeth regain their cutting strength.

Using Industrial Solvent or Acid

The recommended industrial solvent and acids include muriatic acid, hydrochloric acid, potassium Sodium Tartrate, Tetra hydrate, etc.

Muriatic acid has a solid corrosive effect with a pungent smell. In that case, we advise wearing safety kits like goggles and gloves.

Use a glass jar or container that has muriatic acid. Put the flexible shaft carbide burrs in the pot. The acid reacts and bubbles away aluminum particles from the cutting edges.

The exact process applies when using potassium sodium tartrate tetrahydrate. Essentially, muriatic acid cleans aluminum dirt, while potassium sodium tartrate tetrahydrate removes other metallic particles.

Do We Have Misconceptions Regarding the Use of Flexible Shank Carbide Burrs?


The misconception about flexible shaft carbide burrs is about their performance and quality. The truth about the quality and performance is that the burrs perform just like other rigid shank carbide burrs.

However, flexible shaft carbide burrs only bend around obstructions so that you easily access hard-to-reach areas.

Why Should You Choose Syndent’s Flexible Shank Carbide Burrs Over Other Brands on the Market?

Syndent uses high-grade tungsten carbide, a highly tough material with the highest density and unique natural sharpness. Thus, our flexible shaft carbide burrs guarantee excellent performance.

We braze our flexible shaft carbide burrs automatically using advanced welding machines. Moreover, we design the cutters using modern CNC machines. Therefore, our burrs have high precision and accuracy in processing different workpieces.

The cutters (flutes) of our flexible shaft carbide burrs don’t clog. Hence, you experience a prolonged cut without heat buildup.

Because of carbide elements, our flexible shank carbide burrs have quality resistance to scratch, wear, friction, and rust.

flexible shaft carbide burrs

High-quality flexible shaft die grinder

Before dispatching our flexible shaft carbide burrs to you, Syndent carries out tests for quality assurance. In case of quality issues, Syndent guarantees a free and quick return of our items.

Syndent controls excellent quality on the flexible shaft carbide burrs we manufacture at all times. Asa result, buyers can improve their businesses effectively.

We’ve implemented extra quality control measures on each flexible shaft carbide burr production procedure.

Syndent examines the quality of all flexible shaft carbide burrs during every process of production. Hence, we guarantee stable burrs that suit various industrial applications.

Do we Have Particular Industries and Applications where You Can Use Flexible Shank Carbide Burrs?

The applications of flexible shaft carbide burrs may vary from one industry to another. However, the main applications include removing castings in hard-to-reach regions.

You can use flexible shank carbide burrs to clean:

  • Pump castings.
  • Pump impellers.
  • Welding fins.
  • Turbine blade assemblies.
  • Other blending applications

The industries in which you can use flexible shaft carbide burrs include:

  • Automotive.
  • Aerospace.
  • Metalwork.
  • Welding.
  • Shipyard.

How Long Can You Use a Flexible Shank Carbide Burr, and Which Factors Affect Its Lifespan?

Flexible shaft carbide burrs can last highly long without dulling or breaking. However, proper use and cleaning can increase their lifespan.

The wrong application of flexible shaft carbide burrs can hugely affect its lifespan. It, therefore, demands using flexible shaft carbide burrs for the right job.

Also, leaving the blades of flexible shaft carbide burrs with dirt affects their lifespan. Essentially, the flutes require cleaning after each application to avoid dulling.

Applying too much pressure makes the slicing edges dull rapidly. Therefore, allow the flexible shaft die grinder to work on itself under your control.

Do we Have Specific Techniques/Strategies Which Can Effectively Assist in Optimizing the Performance of a Flexible Shank Carbide Burr?


Always keep the flexible shaft carbide burr moving with low pressure. Nonetheless, you should always have control over the burr while processing the material.

Keep the tool still for a short time. Otherwise, keeping it still for long restricts the burr from jabbing and digging. Hence, it will leave unsightly marks on the workpiece and roughness.

On the other hand, a lot of pressure causes dulling of the cutting edges of flexible shaft carbide burrs.

What’s the Comparison Between the Price of a Flexible Shank Carbide Burr and Other Rotary Tool Accessories?

The price of flexible shaft carbide burrs looks extremely higher than other rotary tool accessories. That is because of the tool’s uniqueness and its purpose that other ordinary means cannot function.

What Kind of Warranty/Guarantee Does a Flexible Shank Carbide Burr Have?

Syndent offers a free return if the flexible shaft carbide burr doesn’t perform at its best.

Moreover, Syndent guarantees the fastest and most free replacement after assessing and ensuring the burr doesn’t meet quality standards.

How Do You Use Flexible Shank Carbide Burrs in a Metal Processing Operation?

With the help of a flexible shank carbide burr, you can cut, deburr, enlarge holes, etc. Nevertheless, adjustable shaft carbide burrs work well in conjunction with air tools.

For you to process metal, the flexible shaft carbide burr spins in a rotary tool. And while in a continuous motion, the burr can produce various functions like shaping, cutting, cleaning, etc.

Which Type of Cuts Can You Achieve with a Flexible Shank Carbide Burr?

Flexible shaft carbide burrs can help you achieve various cuts, including single, double, and aluminum.

Single Cut has single slots or flutes, the most common form of teeth used in carbide burrs. The single cut works perfectly with steel, iron, brass, copper, and other hard materials.

The grain pattern of a single cut flexible shaft carbide burrs restricts you from using the burr on soft materials. Otherwise, it might easily damage the fabric.

The double cut has double cross-cut flutes or double grooves. Hence, it allows easy wielding and managing. Thus, beginners can use it safely.

flexible shaft carbide burrs

Double cut

Aluminum cut also has single slots like a single cut. But, the spaces look more prominent and slightly deeper suitable for processing soft materials like aluminum.

Besides flexible shaft carbide burrs, Syndent produces similar tools like long shank carbide burrsrotary files, etc.

Please send us an inquiry for flexible shaft carbide burrs and receive an instant quotation or other questions.

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