Category Archives: Centerless Grinding

Centerless grinding solutions that provide maximum surface finish, precision roundness, and tight diameter tolerance for both round bars and complex parts.

our centerless grinding advantage

Our Centerless Grinding Advantage

Due to eminent request for bar perfection, we brought up our unique centerless grinding advantage: that is to bring your bars to the right precision and tolerance.

our centerless grinding advantageDue to the extent request of different industries and manufacturers for bars with the right precision, diametrical tolerance, and surface finish, we extend our centerless grinding capabilities with the implementation of CNC machines and automated control system to bring bars to their right surface finish. All at cost-effective rates!

Consistency is one important factor when handling bars; distortion is a BIG no. The good thing about centerless grinding is that it acts like a black magic in transforming deformed workpiece into one whole new perfect bar in a single pass only. This grinding method takes a very abrasive process in cutting away unnecessary parts of the workpiece as it’s held between rolling grinders and flown out of the machine completely ground with consistent straightness and accurate diametrical tolerance.

We heard the demands from different industries and our centerless grinding capabilities can bring all these advantages:

Incredible Steel Crafting

The notion behind treating centerless grinding as a “black magic” is its way of holding the workpiece without centers but still can get the desired finish and precision. The method? It’s the use of three-point positioning in which bars are rigidly held between the grinders above the work blade. It will just take few but accurate adjustments to make sure bars are supported within the grinding process. During the abrasive grinding action, excess parts are cut away and bars are ground to achieve that precision roundness, tight diametrical tolerance, and fine polish – things which we are capable to do!

Correcting Surface Errors

Eliminating errors in bars is its main priority and the rest will follow. If the challenge is either to grind long round bars or complex parts – our centerless grinding got all the solutions to that. For grinding long round bars, we use through-feed grinding in which bars are pulled past by the regulating wheel continuously grinding it until it’s flown out of the opposite side completely ground. For complex parts, we opt for plunge grinding or the in-feed method which allows grinding even of the smallest diameters to correct the surface. Abrasive grinding of material is done through a tangential feed of the grinding wheel.

Multifunctional Under One Roof

Centerless grinding, by far, is considered as the most multifunctional grinding method of all machining operations. The machine used and support implemented (as mentioned above) are responsible of performing essential machining solutions to save bars from deformation. Aside from grinding, it can perform turning, cleaning, buffering, and polishing which other machines can’t do. That is why centerless grinding is better recommended for operators who prefer more on multiple functions, less lead times.

Cost-effective Operation

One good thing about centerless grinding is it does not need much of an astounding preparation when it comes to cost but still can leave bars fully furnished to their right precision – which is why it’s totally cost-effective for operators! Being multifunctional, it can bring all the the necessary work in a single pass with regard to consistency in bar’s cut, roundness, and diameter tolerance.

We adhere to quality upon doing our machining services and production of products. Quality inspection is consistently laid out at each end phase of our operations. Moreover, we grasp full understanding of the fundamentals in grinding to make sure we can target specific standards in steel crafting.

If you have any questions about any of our other product availability and services, please contact us directly or get our Free Quote to be assisted with your request today!
automotive applications

Centerless Grinding: Breakthrough in Automotive Applications

automotive applications

Centerless grinding made such a breakthrough in the automotive industry since it can bring up all desired precision and tight tolerance to components.

As we all know centerless grinding really makes a big breakthrough in the machining industry. Being recognized as highly rated machining operation that gains almost perfect surface polish, tight diametrical tolerance, and high precision, centerless grinding is edging itself to get highest ranging demands from metal workers and manufacturers.

Purpose-built centreless grinding machines are used upon the operation. Such machines are composed of a grinding wheel, regulating wheel, and some supporting tools for holding workpiece. With the implementation of proper positioning with these tools, the required finish is a sure catch at each end phase of the operation.

Centerless Grinding for camshafts and crankshafts

Centerless grinding is used mainly in the manufacturing of automobile parts and engines and components such as camshafts, crankshafts, needle rollers, input shafts, and injector plungers.Such components have dire need of precision and tight tolerance to function perfectly in each of its designated applications.

The highly increasing demand for precision components gives the operation itself a big role in keeping the wheels turning in the machining industry.

But centerless grinding is not just be applied in automotive applications. It is also highly sought among the large areas that require high precision among raw materials to be used such as the aerospace structure for turbine engines, tubes for both industrial and medical purposes, etc.

Accuracy Achieved

Accurate polish and finish is achieved through the abrasive material removal done by the grinding operation. This operation has no “centers” to be exact. In other words, centreless grinding does not include spindles or fixtures to hold the workpiece while being ground. It’s just a matter of the positioning placed between the grinding wheel, regulating wheel, and the workblade.

Centerless grinding has been eminently used in achieving custom sizes. To achieve ranging sizes, form, and finish demands, centreless grinding is categorized into two primary forms:

Through-feed/ Thrufeed grinding

If the challenge is to grind long round bars, then through feed is best applied in the process. This course done through letting workpiece be fed to the machine and is pulled past by the regulating wheel and flown out of the opposite side. Through-feed/ thrufeed is highly efficient for separate feed mechanism is not required; but, it can only be applied in workpieces with simple cylindrical shape such as pistons, tubes, pistons pins, and bars.

In-feed/ Plunge grinding

If the requirement is for the relatively complex parts and shapes to be ground to their highly precise finish, in-feed/ plunge grinding is used. Gear shafts, crankshafts, and camshafts are really complex automotive components that need the implementation of in-feed grinding to achieve the desired ground and finish. The workpiece is loaded into the machine, allowing the regulating wheel to move into place. The complexity of the component shape requires grinding them accurately to prevent the workpiece to be fed axially through the machine.

Advance Grinding Services strives to deliver high precision grinding to sort out your custom parts for your high-end application. Get our free quote or contact for more details.
centerless ground bars

Centerless Grinding: Achieving Perfectly Centerless Ground Bars

“Achieving perfectly centerless ground bars with the precise roundness and tight tolerance is made possible with our advanced centerless grinding solutions.”

To respond with the eminent demand for closer tolerances on bar diameters and finer surface finishers, Advance Grinding Services, Inc. performs centerless grinding process to accomplish high application set by our diverse customers. With the centerless grinding and the use of advanced CNC machines, we are able to bring out the tight diameter tolerance in every bar and produce super fine surface finishes.

Centerless ground bars have close tolerance that are up to .0001” and the finest micro finish. Even perfect bar ground and polish can be achieved in out-of-roundness materials which have undergone a rigid process during the grinding operation.

There is a standard part implemented in the centerless grinding process. Three-point gages are used to ensure the workpiece in its proper place and in proper hold. Bars are cold-drawn before being ground to meet customers’ demand for finished physical properties.

Our metal operators always attest to the following critical factors considered in grinding centerless ground bars:

  •  internal structure
  •  hardness
  •  depth of decarburization


Considering factors of setting up the wheel is also highly important to bring out that perfectly centerless ground bars.

1. Proper distance between grinding wheel and the regulating wheel

As three-point positioning method used in the process, proper distance between the wheels is a must! This will provide bar size consistency and accurate surface finish in every workpiece.

2. Regular grinding wheel dressing

Faulty dressing can lead to uneven fine lines or wavy traverse, leaving ragged wheel edges. Diamond traversing should be maintained at an even rate. Due to the thorough grinding, grains might get dull and so wheels should be redressed at times.

3. Type of abrasive grains

Diamond type of grains are best recommended in the grinding process since diamonds are sharp and hard to break. They should not be allowed to dwell on wheel and should be dressed across face only, starting at the edge.

4. Location of the workpiece between wheels

Workpiece must be placed properly in the process and in proper hold between the wheels. The location of the workpiece is critical in achieving that perfect grinding process.

5. Proper Implementation of work support blades

Choose the proper work blades for your process. Change the blades to softer material. Better use steel, aluminum bronze, or cast iron.

The quest for meeting the tight tolerance and surface finish in all bar products is rigidly watched in each phase of operation. Thorough surface grinding can sure be achieved with understanding of basic fundamentals of grinding – and that’s what we set in all our operations.

To get our premium cold-drawn product availability, feel free to fill out Request-a-Quote Form now!
centerless

Centerless Grinding: Correcting Bar Surface Errors

Centerless grinding, without much of a huge cost preparation, can eliminate errors in workpieces thus leaving your bars perfectly finished – such a cost-effective operation for most operators!

It has never been a new knowledge for most metal workers that centerless grinding really has the edge to eliminate errors and bring surface perfection in every bar. The ability of centerless grinding machines to grind both soft and brittle bars is an additional point. It also requires less hassle upon setting up for faults caused by fixing are eliminated in the process. Thus, with the use of automation, loading and unloading of workpiece is simple and smooth flowing. All is done through a single pass in which a process of loading the bars into the machine and flying them out of the opposite side is running, leaving them fully finished and polished.

For two kinds of grinding process, there are a lot of advantages when it comes to finishing:

Through feed grinding/ thru-feed

The problem in grinding long round bars would never be that difficult. With the help of automation, the long bar pieces will be pulled past by the regulating wheel and let the grinding wheel do the abrasive part cutting. Therefore, correcting surface errors in long bars is a surefire part of the process – eliminating unwanted parts and cutting away rust.

In-feed grinding

When it comes to grinding complex parts also, centerless grinding also performs its in-feed type or the plunge grinding. It can’t be avoided that a workpiece can have a lot of outer diameters over the length. In line with this, only one possible part can be ground in most cases over the length. But with infeed type, an operator can choose whether to grind only one small part or the total work piece.

Advantages of Centerless Grinding

  • The use of continuous thru-feed grinding allows no time loss in changing the workpiece
  • Even long work pieces with small machines can be handled
  • It can also achieve very high grinding wheel rotation speed

How it eliminates errors

The error in centering is eliminated in the course, that’s why it’s “centerless”. Thus, there exists a “floating” condition along the course of grinding. This unique process that centerless grinding has allows a less stock needed and longer wheel life. In addition, by the use of attachments or gravity chute, the process itself can also grind large quantities of an even smaller sized work.

Although there is an apparent lack of work holding in the process, centerless grinding has sure way for the bar to be rigidly supported under the grinding cut thus, allowing an optimum surface polish and finish. Thus, much likely to defy our first impression about the metal cutting.

With the fine ability of surface polish and finish by centerless grinding, it can also bring back the original appearance of an old bar. It can do extensive cleaning, getting rid of rust and perfecting deformed parts.

The great fact about centerless grinding is that degree of error is reduced by half. The formula there is that part removal is done and measured on the diameter rather than the radius. It is considered as a mature process since it has fewer wear surfaces in the machine and automatic lubrication. This is the reason why maintenance is just a small part of the process and not really a big inclusion in the total cost. In other words, it is a much cost-effective operation!

Grinding parts in a most-efficient and cost-effective way is possible! Feel free to fill out our free quote now! Or give us a call at 708-442-7100.
pump shaft quality

Centerless Grinding: Achieving Pump Shaft Quality

“Achieving pump shaft quality is made possible with centerless grinding operations that can do grinding in a variety of ways – machining both simple and complex parts for your high performance application.”


Pump shaft quality is determined of how shafts and bars are turned, ground, and polished to achieve the tightest outside diametrical tolerance and straightness. Now pump shaft quality is what has always been sought by manufacturers and operators to be used in rotating industries.

450 stainless steel is highly recommended once you are looking for pump shaft quality stainless steel. Pump shaft 450 stainless steel is a high-strength, non-galling metal. They are purposely engineered to be used in severe service application. If some steels can provide high strength, they lack strength and vice versa. But pump shaft 450 stainless steel does both. It is almost compatible with all stainless steel grades including carbon steel and alloy steel grades.
450 Pump shaft quality Applications
450 stainless steel is best applied in pump shaft applications. They are used specifically for maintenance material suitable in highly corrosive environments. 450 steels possess high strength and better machinability so they stay straight even during machining course or put into service.
Centerless Grinding for Pump Shaft Quality
Centerless grinding operations are specifically designed for machining camshafts, pump shafts, input shafts, bushings, and pins. This centerless operation can grind different kinds and shapes of materials through profile grinding, infeed, and thrufeed grinding. Grinding can help reduce wear and tear occurrence on the shaft, while achieving high diametrical tolerances. This helps provide more controlled qualities to the material.

Centerless grinding equipment are made versatile to handle parts machined from a wide variety of grades of both hot-rolled and cold-rolled steels, alloys, and stainless steels. This centerless operation can help achieve the required pump shaft straightness that is up to .005” to bars. Centerless grinding is highly sought in shops that run high production volumes because of its automated application. Automation allows a quick process of inserting bars to be ground in the machine and flying them out on the opposite side – along with consistent surface finish.

Once you use pump shaft quality bars, you can be sure that they are machined to the highest quality specifications for tight diameter tolerance and straightness.

If you are looking for pump shaft quality materials, feel free to fill out our free quote or give us a call at 708-442-7100.