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  • Leading manufacturer of rotary burr over 11 years.
  • Fast dispatch is promised by 41 sets of advanced CNC machine
  • Brazing with silver material upon USA technology
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Syndent Rotary Burr

Syndent Rotary Burr

Syndent rotary burr is a kind of tool best used for deburring, drilling, shaping, and finishing.

Our brazing technology came from USA. The certified solid carbide is brazed automatically onto the steel shank.

Our skilled engineers develop rotary burr flute in our professional test laboratory. All the teeth making procedures were completed in the advanced 6 axis CNC.

Syndent is a leading rotary burr manufacturer in China for more than 11 years.


Cylinder rotary burris ideal for contour finishing, flat surface removal.


Cylinder with end cut rotary burris suitable for removal contour and right-angled corners


Cylinder with radius end rotary burr is suitable for processing contour and arc surface at a certain angle


Ball shape rotary burr is good for machining round edge and end pre-processing before brazing


Oval shape rotary burr is suitable for round edge removal


Tree with radius end rotary burr is perfect for grinding round edge in long and narrow positions


Tree with pointed end rotary burr is used for machining round arc contour in long and narrow places


Flame shape rotary burr is good at round edge machining


Cone shape rotary burr functions like a countersink. Suitable for chamfering inner hole


Taper with radius end rotary burr is widely used for round contour removal in narrow positions, and surface machining


Taper with pointed end rotary burr is suitable for narrow position deburring and counter surface machining


Inverted cone rotary burr is suitable for rear-side chamfering from the inner side.

Why Syndent Rotary Burr

Syndent rotary burr is made with YG7 grade micro-grain tungsten carbide. Our rotary burr uses the exactly same quality raw material as the world-famous brands. These famous brand rotary burr companies purchase raw material from our material supplier too.

Tungsten carbide is a super hard material; its hardness is second only to diamond. Syndent rotary burr is ideal for quickly grinding various super-hard materials. Also, we can design your rotary burr cutter with coarse style flutes for the soft material, like copper, aluminum, etc.

Syndent carbide burr is widely applied in aerospace, automotive, shipbuilding, dental laboratory, jewellery manufacturing, and so on. These rotary burr tools are commonly used in the pneumatic or electric die grinder.

You can broadly use Syndent rotary burr for steel shaping, die casting, metal casting, wood carving, farriers, sculpting, welding, chamfering, etc.

Our carbide cutter rotary burr must provide you with a wide variety of high-quality metalworking, woodworking, stone-working, and plastic-working.

1-Rotary Burr material

Syndent will check the raw material specifications of rotary burr before production.

2-Rotary Burr brazing

Syndent automatically brazes rotary burr with silver in a low temperature.

3-Rotary Burr balance

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

4-Rotary Burr bending

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

5-Rotary Burr shaping

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

6-Rotary Burr toothing

Syndent CNC grinds the rotary burr teeth after the tests approved

7-Rotary Burr polishing

Syndent polishes the rotary burr shaft, and its brazing position

8-Rotary Burr package

Syndent makes your logo on the rotary burr, and stick your own label on the case.



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Your Best Supplier of Rotary Burr

Find your rotary burr easily among the nearly 1000 products from the Syndent catalogue, mainly including cylindrical rotary burr, ball rotary burr, oval rotary burr, taper rotary burr, etc. Syndent supplies tungsten carbide rotary burr in all special grinds for every deburring and shaping operation potential.

Syndent whole manufacturing process is divided into 5 groups. Every group has its own quality control requirements, and is responsible for the signature. That ensures your rotary burr repeatedly be manufactured in the correct methods.

rotary burr

We use advanced automatic welding equipment and technology. This can ensure that your rotary burr obtains the best bending strength and the smallest bounce range.

Before the delivery, every single piece of rotary burr is 100% strictly tested for robustness, sharpness, and safety. Syndent must be your best and trustable rotary burr supplier

Get an instant quote for Your next rotary burr order now!

Rotary Burr: The Ultimate FAQ Guide

This guide will answer all questions you have been asking about rotary burr.

Whether you want to learn about the benefits, finishing treatments, quality standards or manufacturing process – you’ll find everything in this guide.

Keep reading to learn more.

What is Rotary Burr?

rotary burr


A rotary burr refers to a rotating tool used for removing excess material, burrs, and sharp edges from a workpiece.

The design allows rotary burr to rotate at extremely high speeds. In essence, the high speeds make it possible for the tool to effortlessly manipulate the specific workpiece it works on.

This type of burr ideal for enlarging holes, deburring, shaping, grinding, drilling, cutting, and removing unwanted material.

You can use this tool in a wide range of applications across different industries surrounding fabrication and engineering.

How does Rotary Burr compare with HSS?

Both rotary burr and HSS are used in relatively similar operations.

However, they tend to vary in numerous aspects. Some of the major variances include the following aspects;

·       Cutting Speed

Rotary burr has a relatively fast cutting speed compared to High-Speed Steel (HSS).

In essence, you can achieve a cutting speed of between 4-7 times faster in rotary burr compared to HSS.

·       Durability

Rotary burr is more durable than HSS.

The former generally has a wide range of features enabling it to have a longer tool life than the latter.

For instance, rotary burr has excellent wear-resistance, heat-resistance, and corrosion resistance abilities. It is also comparatively less brittle than HSS.

·       Strength

Rotary burr is stronger than HSS.

The former has better resistance to a wide range of mechanical elements than the latter.

This enables rotary burr to have a comparatively long tool-life as well as faster cutting data than HSS.

·       Cost

Rotary burr is seemingly more expensive compared to HSS.

The design construction and a variety of other features make the former to be relatively costly.

In such a case, HSS becomes a suitable option to consider especially, for applications involving high-mix, low volume.

·       Edge Retention

Rotary burr has a better ability to maintain an edge compared to HSS.

In overall, rotary burr stands out as a relatively superior option to HSS.

Nonetheless, rotary burrs are preferable in more demanding applications.

Moreover, HSS has comparatively less tolerance for heat.


What are the Benefits of Rotary Burr?

There are several advantages you can obtain from rotary burr when working on different types of materials.

Some of these benefits include the following;

  • It comes in a wide variety of designs, shapes, and sizes.

The advantage, in this case, is that this enhances your choice options when buying an ideal one for your application.

  • The rotary burr offers excellent dimensional accuracy in different types of tolling processes.

Essentially, this allows you to attain the necessary accuracy when working on materials that require balanced tolerance.

  • It offers excellent versatility. The benefit here is you can use different types of rotary burrs in various applications and functions across different sectors.
  • This tool also provides high removal rates. Thus implying that you will ultimately obtain the desired results from your project.
  • Rotary burr is highly long-lasting. It is resistant to many mechanical elements hence can handle demanding applications effectively.

The benefit here is enhanced performance and reliability.

  • Also, rotary burr is cost-effective. The performance and reliability you obtain from working with the tool is worth the cost.

And when you buy in bulk, it becomes even more affordable since you’ll get better discounts.

  • This tool is also suitable for all types of metal.

Therefore, you to use it on any type of metal and still obtain desirable results accordingly.

rotary burr


What are the Available Size Varieties for Rotary Burr?

Rotary burr comes in different sizes.

Of course, the ideal size is dependent on the particular application or workpiece you are working on.

Even so, the measurement of rotary burr size is often based on the size of its respective shank.

Shank simply refers to the opposite end to the working part of the rotary burr.

The major size varieties available for this tool nonetheless include the following;

  • 6 mm
  • 4 mm
  • 3 mm
  • 6 mm
  • 13 mm
  • 16 mm

However, this does not imply you can hardly get any other size of rotary burr.

In essence, you can design this rotary tool in any size, depending on the needs and demands of your application.

rotary burr

What is the Ideal Speed for Operating a Rotary Burr?

A suitable speed for operating a rotary burr varies from one application to another.

The specific type of burr you use is another determining factor of the suitable speed for this tool.

Also, it is dependent on the type of material you are working on using this tool.

Moreover, the speed is determined by the contour you are producing.

Optimum speed available for the tool when operating it is recommended. Even so, it is advisable not to go beyond the speeds of 35,000 RPM.

For example, you might realize the rotary burr is chipping quite easily when operating it. This could be a result of slow speeds.

Always endeavor to start the burr off slowly, then increase the speed gradually as you continue working on the material.

Operating the tool under high speeds consistently prevents flutes of your rotary burr from clogging.

rotary burr

What is a Suitable Technique to use when Operating a Rotary Burr?

When operating the rotary burr, allow it to do the work without necessarily pressing it hard on the workpiece material.

In simple words, endeavor to allow the tool to move around the workpiece as much as possible.

If you leave the metal burr still for long, it can lead to clogging. This may prevent it from jabbing and digging into the workpiece.

Ultimately, this causes visible marks and a rough job on a workpiece.

If you must apply pressure, especially where the workpiece is relatively hardy, the pressure has to be slight.

Typically, excessive pressure makes cutting edges of the flute to chip away.

This might also make the chips to become smooth relatively fast.

And it results in reduced efficiency, performance, and durability of this particular tool.

What do you Use Rotary Burr for?

rotary burr

You can use rotary burr on a wide range of applications across various sectors.

Some of the common uses, however, include the following;

·       Sculpting

It is a process, which involves carving or molding a figure or component out of hard workpiece material.

·       Deburring

This is the major use of a rotary burr across different sectors, whether it metal fabrication or engineering.

Deburring involves the removal of excess or unnecessary materials from a particular workpiece you are working on.

Ultimately, the process gives you a smooth-surfaced edge on your workpiece material.

·       Cutting

This is a tooling process, which involves slicing, shaping, and shaping the workpiece material to fit into your ideal dimensions.

·       Grinding

It is a process involving the removal of unwanted materials or pieces from a workpiece.

Grinding is relatively abrasive hence resulting in desired results since the tool rotates at a higher speed.

·       Leveling

This method entails creating a flat and even surface of a specific workpiece material you are working on.

Expanding holes – It refers to a technique, which entails enlarging the size of holes on a workpiece using relatively large rotary burr tools.

Particularly, a rotary burr is a highly versatile machining tool. Therefore, you can use it in various industries for a wide range of applications.

The uses mentioned above are among the common ones in various industries. However, it does not mean they are limited to such mentioned uses only.

rotary burr

How do you Maintain Rotary Burr?

To attain excellent performance, efficiency, and longer tool-life, there is a need for maintaining your rotary burrs.

You can use several techniques to attain the best results in maintaining a rotary burr.

First, ensure you keep the heat low and allow air to get into the respective workpiece.

This prevents fluted cut rotary burr from loading.

Maintenance methods vary depending on the type of debris and clog you are cleaning from the burr.

Some of these techniques include the following;

In Cleaning everyday Debris;

Run the wheel or tip in the bristles of a wire brush. Ensure you use a low or medium speed.

Ensure you frequently clean to prevent build-up and possible accumulation.

In Cleaning Accumulated Clogs;

Run the tip of the wheel on the edge of the face of an uncured rubber block.

If you are Cleaning Sticky Clogs;

You’ll need to remove the burr by loosening the mandrel’s tip.

  • Soak the tip in a recommendable solvent for about 10 minutes
  • Remove it from the solution and use a wire brush to remove any remaining residue.
  • Assemble the burr back to the mandrel and secure it accordingly.

Removing Stubborn Clogs

Here are the steps you need to use to clean;

  • Remove the burr by loosening the tip to the mandrel
  • Place the tip on a saucer and spray with an oven cleaner
  • Let it settle for one hour, then flush with water as you rub the burr with a wire brush
  • Re-assemble the burr to the mandrel the secure it accordingly.

Additionally, use a good quality brass wire brush to remove swarf when cleaning your rotary burr.

What is the Difference Between Rotary Burr and Rotary File?

Rotary file refers to an engine-driven pointed and tapered tool, which features cutting edges.

It is used for shaping and preparing different workpieces in different applications.

You can also use it to mechanically prepare root canals during endodontic therapy or removing root canals in dentistry.

However, a rotary burr is a die grinder bit used for performing different types of fabrication procedures on different workpiece surfaces.

What are the Properties of a Good Rotary Burr?

rotary burr

When buying a rotary burr, always look into some of the critical properties of this tool.

Some of the ideal features include the following;

Lightweight – It should be lightweight but strong since this enhances the reliability and performance of the tool.

This also comes in handy in terms of reduced functioning weight.

Excellent dimensional stability – The tool should always maintain its original dimensions regardless of the conditions it is subjected to.

Hardy – It should be designed from hard-wearing material to endure demanding tasks without wearing out faster.

High tensile strength – An ideal rotary burr needs to be exceptionally strong to work on any workpiece material without necessarily breaking.

Versatile – You should use your rotary burr in different applications and still attain desirable results.

High weathering ability – Ensure the rotary burr can withstand different types of environmental and weather conditions accordingly.

Can you use a Rotary Burr on the Drilling Machine?


You fix the respective rotary burr and use it on a drilling machine for various types of tooling activities.

However, always attach the right size of rotary burr and ensure it is tightly secured on the drilling machine.

What makes Rotary Burr Teeth to become Dull?

Several elements contribute to the possibility of rotary burr teeth becoming dull relatively fast.

One is abrasive nature of the specific workpiece you are cutting. When working on a material, which is relatively hardy, the rotary burr teeth become dull quite faster.

The other element is cutting speed. Technically, you can cut some materials or workpieces faster than others.

However, in many instances, when the cutting speed is always intense on some materials, the teeth tend to dull faster.

Faster speeds tend to generate overheating issues on rotary burr tips.

When the tools overheat, there is a tendency of crud buildup, which ultimately leads to the teeth’ dulling.

Applying too much pressure is the other aspect leading to faster dulling of rotary burr teeth.

When working on the material using rotary burr, always use light or medium pressure. Just let the tool do the work and not necessarily your arm.

Another element is the possibility of purchasing and using after-market rotary burr.

Ideally, poor quality rotary tools often dull and even break relatively quickly.

You, therefore, need to make sure you buy quality rotary burrs from reputable manufacturers or distributors.

rotary burr

Is Rotary Burr Recyclable?

This is dependent on whether the specific type of material used for manufacturing the rotary burr is recyclable.

Some materials, such as tungsten, are 100% recyclable.

In such instances, it becomes easy to recycle such rotary tools.

However, if the tool is designed from materials that can hardly be recycled, it means you cannot recondition it.

Therefore, the only option is to dispose them off in the landfills once they wear out completely.

What are the Types of Rotary Burr available?

Rotary burrs come in different varieties.

The essence is to ensure you can find the specific design or variety tailored for your specific application.

The common varieties you are likely to come across when shopping for this tool include the following;

  • Tree with radius end rotary burr – This is suitable for machining a round arc contour in relatively narrow and long workpieces.
  • Flame shape rotary burr – This is ideal for round edge machining on a workpiece.
  • Cone shape rotary burr – This design is suitable for a chamfering inner hole in a workpiece. It functions relatively similar to a countersink.
  • Taper with radius end rotary burr – This type of rotary burr is commonly used for removing round contour in comparatively narrow positons. It is also suitable for surface machining.
  • Taper with pointed end rotary burr – This design is ideal for narrow position deburring and counter surface machining.
  • Inverted cone rotary burr – This one is suitable for rear-side chamfering of the workpiece from the inner side.
  • Oval shape rotary burr – This is suitable for round edge removal from a workpiece.
  • Ball shape rotary burr – It is ideal for machining round edge and pre-processing of workpiece before brazing.
  • Tree with pointed end rotary burr – This type of tooling design is perfect when you in need of grinding round edge in long and narrow positions.

rotary burr shapes

How do you Manufacture Rotary Burr?

The manufacturing process of rotary burr is quite intensive.

Several aspects are considered before the actual process begins.

Here is the step by step process of how this rotary tool is manufactured;

·       Assessing the Raw Material

This stage involves a meticulous examination of different elements of the possible raw materials to design this tool.

The essence is to determine whether the raw materials meet the required specifications of a rotary burr before production.

·       Brazing

This step involves joining two different types of metals by melting and flowing a filler metal into the joint.

Principally, the filler metal used in this process has a lower melting point than the adjoining metal.

·       Balancing

This process takes place immediately after brazing.

Also, it involves making the rotary burr jumping test after brazing.

Balancing aims at attaining a tolerance of less than 0.1 mm.

·       Bending

At this point, the essence is to examine the hardness of the rotary burr shank after brazing.

Thus process helps in determining the bending strength of the rotary burr.

·       Shaping

It is a step, which involves sculpting the rotary burr to attain the desired shape.

Thus process uses a shaping machine to shape this tool accordingly.

·       Toothing

Toothing entails grinding the rotary burr teeth to meet the respective requirement.

This is important since it makes it possible for the rotary tool to ultimately have the desired tooth.

·       Polishing

The essence of this step is to smoothening and making the workpiece surface level and even.

It merely entails rubbing the rotary burr against a machining tool.

In the end, polishing yields remarkable reflection and a cleaner rotary burr.

·       Packaging

Packing is the last step in the manufacturing process of rotary burr.

Here, the technique involves enclosing this particular tool in either a standard or custom package.

Custom packages may involve getting your logo and labeling it on the case.

rotary burr

What are the Common Materials that can be Worked on by Rotary Burr?

You can use a rotary burr on different types of materials.

Ideally, you can use it on almost all types of metals available.

And this is essential because you’ll have broadened options and doesn’t limit you to specific ones.

Nevertheless, some of the common materials you can use this tool on including the following;

  • Cobalt
  • Titanium
  • Gold
  • Stainless steel
  • Carbon steel
  • Zinc
  • Aluminum
  • Silver
  • Brass
  • Fiberglass
  • Cast iron
  • Wood

How much does Rotary Burr Cost?

Several factors determine the actual cost of purchasing a rotary burr.

Some of these factors include the following;

Material grade – The specific grade of material used for manufacturing this tool influence the overall cost.

Highly regarded material grades such as tungsten are relatively costly than those regarded as somewhat inferior grades.

Design – Rotary burr is available in either standard or custom designs. The former is relatively cheaper to buy than the latter.

Standard designs are not demanding and also faster to produce than custom designs.

Manufacturer – Different manufacturers price these tools differently depending on company policies.

Some suppliers are relatively cheap compared to others hence influence the overall cost.

Quantity – Technically, most of the rotary burr suppliers often offer discounted rates on bulk purchases.

When you purchase a few quantities, you’re likely to spend more since a reasonable discount is not guaranteed.

Delivery destination – In many instances, if you are purchasing pieces of rotary burr to use locally, you’ll likely spend less money.

In contrast, the cost can be higher when purchasing abroad since freight and customs charges may apply.

As you can see, the cost of purchasing this tool is not fixed. It is dependent on a wide range of aspects, as described above.

Which are the Common Industries that Benefit from Rotary Burr?

rotary burr

Rotary tool is used widely in different industries surrounding fabrication and engineering, among others.

Some of the common sectors where the use of this tool is prevalent, however, include the following;

  • Shipbuilding
  • Jewelry manufacturing
  • Automotive industry
  • Aerospace
  • Dental laboratory
  • Wood carving
  • Model engineering
  • Tool making

How do You Check the Quality of Rotary Burr?

Ideally, it can be somewhat difficult to tell the quality of a rotary burr from a mere look, especially if you are a novice.

Thus, you must be meticulous and observant to determine whether or not this tool is of high quality.

Some of the tips to guide you on checking the quality of a rotary burr include the following;

Tolerant to mechanical and environmental elements – Technically, a rotary tool is always subjected to unforgiving conditions.

Therefore, a quality one will always tolerate such conditions and still deliver desirable results.

Durable – High-quality rotary tool has an exception tool-life.

And this is due to the hardy materials and manufacturing process usually used in making this tool.

Balanced to strict tolerance – The precision levels of a high-quality rotary burr must meet the international standards.

This is helpful since it prevents the occurrence of defects during the tooling process.

Solid construction – The overall design construction of a quality rotary tool is always meticulous.

Often, the design and manufacturing process captures all vital aspects revolving around the tool’s suitability to its applications.

What Factors Determine the Longevity of Rotary Burr?

rotary burr

They are quite a lot, but the most common elements include the following;

·       Operation Technique

The manner you operate this tool when working on a workpiece influences its overall durability.

If you press the burr too much, it will wear out faster.

Therefore, it is recommended to allow the burr to operate freely or apply a negligible pressure, if any.

·       Design Construction

The general construction of the rotary burr also influences its longevity.

A perfectly designed and manufactured piece will last longer than a shoddily done burr.

·       Operating Speed

Ultra-higher speeds tend to wear out a bit faster than low or moderate speeds.

Essentially, higher speed often causes overheating of thus forming crud leading to reduced burr durability.

·       Quality of the Rotary Burr

The quality of this tool plays a critical role in the overall durability.

Obviously, it revolves around the material used, design construction, and manufacturing process among others.

·       Routine Maintenance

If you take thorough care of your rotary burr, it will last relatively long.

Technically, rotary burr usually accumulates swarf, which may reduce the longevity of this tool if not routinely cleaned appropriately

What Surface Finishing Treatment can you Apply on Rotary Burr?

rotary burr

There are a few but fundamental surface finishing treatments you can apply to this tool. They include the following;

  • Titanium Oxycarbide coating
  • Titanium Oxide coating
  • Titanium Oxyaluminate coating
  • Diamond-like coating

The specific finishing treatment for rotary burr surface, however, depends on the various considerations.

What Factors Determine the Average Lead-time for Manufacturing Rotary Burr?

They include the following;

  • Order quantity
  • Custom or standard designs
  • Pending orders awaiting fulfillment
  • Manufacturer’s lead-time policy

As a leading manufacturer of rotary burr, Syndent adheres to strict quality control while maintaining tight tolerances.

Depending on your unique requirements and specifications, we offer a range of carbide burr, rotary file, and die grinder bits.

For more information on rotary burr, contact Syndent now.

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