Centerless Grinding. Centerless grinding machine

Learn the ins and outs of centerless grinding

Anyone who earns a living at a machine shop probably has heard about centerless grinding, but it is an obscure process often only familiar in name.

The three basic types of centerless grinding are through-feed, in-feed and end-feed. In each case, the fundamental configuration of a machine is identical. The three primary components of a centerless grinder are the grinding wheel, regulating wheel and work rest, or blade.

Components of Centerless Grinding

Grinding wheels do the work as they would on other grinders. Abrasive materials are the same as with other grinding wheels, but the size and shape of centerless wheels differ from other kinds of grinding wheels. Centerless wheels most frequently are bonded with resin materials, unlike other sorts of wheels, which are vitrified. Resin bonding enhances the efficiency of centerless grinding and produces a more resilient wheel.

Like a grinding wheel, a regulating wheel is made of an abrasive material but usually is bonded with rubber or some other similar substance. As the name implies, a regulating wheel regulates the speed of a part as it is rotated against a grinding wheel. A regulating wheel may be more critical to the process than a grinding wheel because a regulating wheel controls the material removal rate, surface finish and geometry.

This high-precision CNC centerless grinding machine is set up to work an automotive part.

Like a regulating wheel, a work rest might be more important than a grinding wheel. A work rest supports a part during grinding. It is easy to see in the diagram on Page 56 how the whole process would be impossible without a work rest. It most often is made of a hard material that resists the tendency of a part to pick up material from a rest. A rest commonly is capped with a carbide strip. The geometry of a rest is crucial as uneven surfaces can allow a part to flex, resulting in chatter, poor surface finish and incorrect geometry. A work rest generally has an angled working surface, which plays a vital role in the efficiency of the process. As the angle becomes steeper, the rounding action of the process is enhanced.

These three components can be configured in several ways to allow a part to sit on the centerline of the wheels, above center or below center. Most setups place a part above center of the wheels. The angle of the work rest surface height above center and the tangency of the regulating wheel and grinding wheel to a workpiece create a unique geometric arrangement that allows the centerless process to efficiently generate round parts.

Types of Centerless Grinding

Through-feed grinding is the most popular form of centerless grinding. Through-feed grinding is performed by traversing a part from one side of the machine to the other, between the grinding wheel and regulating wheel, without stopping. Axial feed is created by dressing a regulating wheel and tipping it at an angle relative to the blade and grinding wheel, normally about 3°. This combination of factors pulls a workpiece across the work rest and between the grinding wheel and regulating wheel. Through-feed grinding is very productive. At a previous employer where we made power steering gears, we would grind 0.305 mm (0.012″) from a 31.75 mm-dia. (1.25″) steel bar that was 914 mm (36″) long. The full process took 33 seconds, and we held the diameter to a 0.0127 mm (0.0005″) tolerance and produced roundness within 0.0051 mm (0.0002″).

In-feed centerless grinding, also known as plunge grinding, is conducted by placing a part on the work rest and radially feeding the part into the grinding wheel with the regulating wheel. In-feed grinding is used when a part has one portion that is larger than another. Crush form dressing imparts the desired shape into the grinding wheel. This method is used to create complex forms or generate multiple diameters at one time. In-feed grinding is efficient at generating small parts with close tolerances.

End-feed grinding is accomplished by feeding a part into a machine, much like through-feed grinding. With end-feed grinding, a part runs axially like with through-feed, but an end stop prevents the part from traversing all the way through the machine. End-feed grinding is used ordinarily to produce tapered parts.

Centerless grinding can replace turning when parts have high length-to-diameter ratios, fine finish requirements and close tolerances. The process works well when finishing thin-walled components that are difficult to clamp. Centerless grinding can be used to rough bar stock before other machining operations so material arrives clean, round and straight. Bars for Swiss machines often are ground before use.

There are many benefits with centerless grinding, but most shops do not have enough work to support the purchase of a centerless grinder, nor do they have people with the skills needed to efficiently set it up. (A fair amount of magic goes into getting good parts from a centerless grinder.) Fortunately, many job shops specialize in centerless grinding. Recognizing centerless applications and finding a good job shop to grind parts can reduce aggravation with tough jobs, lower costs, improve margins and make a company more competitive in the market.


Substance used for grinding, honing, lapping, superfinishing and polishing. Examples include garnet, emery, corundum, silicon carbide, cubic boron nitride and diamond in various grit sizes.

centerless grinding

Grinding operation in which the workpiece rests on a knife-edge support, rotates through contact with a regulating or feed wheel and is ground by a grinding wheel. This method allows grinding long, thin parts without steady rests; also lessens taper problems. Opposite of cylindrical grinding. See cylindrical grinding; grinding.


Condition of vibration involving the machine, workpiece and cutting tool. Once this condition arises, it is often self-sustaining until the problem is corrected. Chatter can be identified when lines or grooves appear at regular intervals in the workpiece. These lines or grooves are caused by the teeth of the cutter as they vibrate in and out of the workpiece and their spacing depends on the frequency of vibration.

computer numerical control ( CNC)

Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.


Removal of undesirable materials from “loaded” grinding wheels using a single- or multi-point diamond or other tool. The process also exposes unused, sharp abrasive points. See loading; truing.


Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

grinding machine

Powers a grinding wheel or other abrasive tool for the purpose of removing metal and finishing workpieces to close tolerances. Provides smooth, square, parallel and accurate workpiece surfaces. When ultrasmooth surfaces and finishes on the order of microns are required, lapping and honing machines (precision grinders that run abrasives with extremely fine, uniform grits) are used. In its “finishing” role, the grinder is perhaps the most widely used machine tool. Various styles are available: bench and pedestal grinders for sharpening lathe bits and drills; surface grinders for producing square, parallel, smooth and accurate parts; cylindrical and centerless grinders; center-hole grinders; form grinders; facemill and endmill grinders; gear-cutting grinders; jig grinders; abrasive belt (backstand, swing-frame, belt-roll) grinders; tool and cutter grinders for sharpening and resharpening cutting tools; carbide grinders; hand-held die grinders; and abrasive cutoff saws.

grinding wheel

Wheel formed from abrasive material mixed in a suitable matrix. Takes a variety of shapes but falls into two basic categories: one that cuts on its periphery, as in reciprocating grinding, and one that cuts on its side or face, as in tool and cutter grinding.


Minimum and maximum amount a workpiece dimension is allowed to vary from a set standard and still be acceptable.


Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.

Centerless Grinding

Ever wonders how those small diameter pins without heads are made? Welcome to the world of centerless grinding where cylindrical workpieces are ground without holding them between centers.

What is Centerless Grinding? How Does it Work?

Centerless grinding means, the cylindrical workpiece (to be ground) need not have centers drilled on its face. The Centerless Grinder is capable of grinding circular work-pieces which do not have centers on its two faces.

The centerless grinding machine eliminates the need for center holes, drivers, and other holding devices or fixtures to hold the workpiece.

The workpiece in a Centerless Grinder rests on a work rest or blade and is supported by a regulating or pressure wheel; the regulating wheel is a rubber bonded abrasive wheel with good frictional properties, to give rotary movement to the work-piece. The abrasive grinding wheel of the machine acts as the cutting tool and does the grinding.

The surface speed of the regulating wheel of the machine will be much less than the grinding wheel surface speed.

Parts of a Centerless Grinding Machine

The centerless grinding machine has a bed mounted on the base, a regulating wheel housing, Grinding wheel head, work-rest, upper slide, and lower slide; the upper slide is mounted on the lower slide.

The Wheel-head is rigidly mounted on the bed of the machine. The regulating wheel drive unit, its housing, and regulating wheel truing unit of the machine are mounted on the upper slide.

The lower slide of the machine holds the work rest.

You can operate the upper slide to move the regulating wheel towards the work rest. Similarly, you can operate the lower-slide to move the workpiece (supported on the work rest) towards or away from the grinding wheel.

The upper and lower slides of the machine are on a swivel plate. You can utilize this to add or remove taper during in-feed grinding and to align the wheels during through-feed grinding.

Your workpiece is supported on a blade mounted on the work rest and the top of the blade is inclined (up to 30°) towards the regulating wheel. The blade angle will be small for higher diameter work-pieces.

The thickness of the blade in your machine should be slightly less than the work-piece diameter, in case of small jobs; during grinding, the position of the work-piece center in your machine will be slightly above (approximately by half the work-piece diameter) the line of centers of the grinding and regulating wheel.

Techniques and Types of Centerless Grinding

Through-feed Centerless Grinding

In through-feed grinding, you have to position the regulating wheel at a nominal inclination to the grinding wheel axis and the workpiece (grinding allowance 0.04 to 0.4 millimeter or 40 to 400 microns on diameter) rotates and moves forward during grinding.

You can reduce the speed of the regulating wheel and increase the inclination for rough grinding to reduce the grinding time.

For finish grinding, you will increase the regulating wheel speed, reduce the inclination to give sufficient time to the grinding wheel to cut the material, longer spark time for a better finish.

You can grind single diameter shafts longer than the grinding wheel width by using the through-feed method. Single diameter jobs, shorter than the width of the grinding wheel can be ground by continuous auto-feeding of work-pieces. In this case, more than one workpiece will be engaged with the grinding wheel at any time.

In-feed Centerless Grinding

You can do in-feed centerless grinding for a workpiece with more than one diameter. There is no axial movement of the workpiece and the width of the grinding wheel should be more than the length of grinding.

centerless, grinding, machine

This is similar to the plunge grinding you do on a regular cylindrical grinder. The regulating wheel of your machine is given a tilt of 20°-30° to hold the workpiece against its shoulder.

You use in-feed center-less grinding to grind work-pieces having a head with a diameter more than the ground diameter. Normally, you have a stopper cum ejector at the other end of the wheel.

You can also utilize the in-feed grinding technique to transfer the profile on the grinding wheel onto the workpiece.

End-feed Centerless Grinding

You have to adopt the end-feed center-less grinding for a work-piece with a head and a tapered diameter. However, for doing this, the grinding wheel or both the grinding wheel and the regulating wheel should be profiled or shaped to give the required taper.

You can use a combination of in-feed and through-feed to grind the work-piece; the length of the ground diameter should be less than the grinding wheel width.

Centerless Internal Grinding

You can do straight or taper bore grinding of thin-walled cylinders or bushes on the Centerless Internal Grinder.

The work-piece in the machine is rotated between the regulating wheel, pressure wheel, and support wheel and the internal grinding wheel driven by the wheel head does the grinding.

Centerless Grinding Vs. Cylindrical Grinding

How centerless grinding is different from cylindrical grinding? From the discussion in the above paragraphs, you can clearly see the following differences between a Centerless Grinder and a Cylindrical Grinder.

Centerless Grinder External Cylindrical Grinder
Centerless Grinder does not need center holes on the work-piece. Normally, the work-pieces ground on an External Cylindrical Grinder has center holes on the face of the work-piece (the exception is chuck holding of short length work-pieces).
Centerless Grinder cannot assure outside diameter grinding in concentric with the bore or vice versa. This constraint does not apply to the External Cylindrical Grinder. Using a dial indicator and with work holding devices like chuck or collet, you can ensure that the OD and ID are concentric.

Centerless Grinding Wheels

You have a grinding wheel and a regulating wheel in your Centerless Grinder; the size of the grinding wheel and the regulating wheel (outside diameter and width) is given by your machine manufacturer.

Based on the material to be ground (including hardness) and the desired rate of material removal you have to select a grinding wheel having suitable abrasive material, abrasive grain size, type of bond, grade, and structure.

The regulating wheel in your machine can be a rubber bonded abrasive wheel with good frictional properties; you may have to select the regulating wheel based on the material to be ground.

The surface speed of the regulating wheel in your machine is much less in comparison to the surface speed of the grinding wheel.

Centerless Grinding Pros and Cons


  • A centerless grinding machine is accurate, simple, and productive; in through-feed centerless grinding of bushes or pins, with a good work-piece feeding system, the work-pieces simply follow each other, enter the grinder, and comes out ground continuously.
  • The machine eliminates the time wasted on clamping and de-clamping the workpiece.
  • Even in the case of in-feed or end-feed center-less grinding, you can use robotic hands to load and unload the component to make it more productive.
  • Your workpiece is supported by the regulating wheel for the complete length (short length work-pieces) or most of its length (work-piece length more than the width of regulating wheel). This is specifically good when your work-piece is slender; since there is no worry about bending of the work-piece. In conventional external grinding, your slender workpiece may bend due to grinding pressure.
  • When you have work-pieces (without center holes), whose circularity (roundness) is not good, center-less grinding is the only option to bring the roundness within the tolerance.
  • By giving proper support and guide, you can grind the complete length of the bar for CNC Machine components like ball screws, without losing the straightness; this is not an easy task if you do it on a regular cylindrical grinder.
  • A Centerless Grinder needs comparatively less grinding allowance than center-type Cylindrical Grinder.


  • If your work-piece has a bore, there is no way to ensure the concentricity between the diameter ground (outside diameter) and the bore.
  • The Centerless Grinder generally has a mass continuous production set-up and may not be suitable for small batches.
  • Limitations on work-piece diameter- you cannot use the Centerless Grinder for grinding large diameters.
  • The Centerless Grinder can be used for grinding round work-pieces only.

Centerless Grinding Tolerances

A properly set up gap between the grinding wheel and the regulating wheel will help you to maintain the required tolerance.

With a sturdy and robust built Centerless Grinder, you can maintain a grinding tolerance well within 10 microns (0.010 millimeters).

Summary: The centerless grinding machine is very good for the economic mass production of small cylindrical components like pins, rollers, bushes, etc. required in the automobile and consumer goods industry. Grinding of such components on a conventional Cylindrical Grinder will be not only expensive but also time-consuming.

Everything You Wanted to Know About Centerless Grinding

In the world of manufacturing, there is a seemingly endless variety of tools, machines, and processes used to get the job done. Centerless grinding is critical to many manufacturing industries where roundness and accuracy are needed, but for people who don’t use this machine on a daily basis, it comes with a lot of questions. What is centerless grinding and how does it work? In this blog, we will discuss the ins and outs of centerless grinding, the different types of centerless grinding, and how this type of grinding is used in modern manufacturing.

What is Centerless Grinding?

Centerless grinding is an outside diameter (OD) grinding process. Compared to other cylindrical grinding processes, centerless grinding does not have a mechanically constrained workpiece. With conventional types of cylindrical grinders, your workpiece is held between centers and rotates against a faster spinning grinding wheel that is operated using an external motor in the work head. Centerless grinding is different.

With centerless grinding, the part supports itself on its outer diameter with the help of a work blade or work-rest located between a high-speed grinding wheel and a slower speed wheel. The workpiece rotates between these wheels in the same direction. The part will turn with the speed-regulating wheel, while the grinding wheel turns faster and removes material from the part.

Types of Centerless Grinding

Similar to other types of grinding, the art of centerless grinding contains many different applications and techniques. The main difference between each of these techniques is how the parts are fed through the machine. There are three main types of centerless grinding techniques: in-feed, through-feed, and end-feed.

Centerless grinding holds the workpiece between a grinding wheel and a regulating wheel to achieve better finishes

In-feed centerless grinding, which is also known as plunge grinding is used when the part has a section that is larger than another. With In-feed centerless grinding, you place your part on the work rest and gradually feed the part into the grinding wheel with the regulating wheel. In-feed centerless grinding is often used to generate multiple diameters or create complex parts. This type of grinding is great for constructing small parts with close tolerances.

The most popular form of centerless grinding is through-feed grinding. Known for its productivity, through-feed grinding is performed by passing apart from one side of the machine to the other without stopping. The workpiece is pulled between the grinding wheel and regulating wheel which allows for quicker and more efficient production time. Grinding shops that produce high-volume orders of parts with relatively few features use this technique.

End-feed grinding is the last type of centerless grinding. In end-feed grinding the part is ran through the machine, similar to through-feed, but an end stop will prevent the part from traveling all the way through. End-feed centerless grinding is best used to manufacture tapered parts.

Applications and Uses

Due to its high precision, centerless grinding has been used to manufacture components in a variety of industries. While manufacturing engine and transmission components such as needle rollers, camshafts and injector plungers for the automotive industry is the most common, it doesn’t stop there. Centerless grinding applications can be found throughout the energy, medical, and aerospace industries as well. From manufacturing parts for airplanes to computers to windmills, centerless grinding has provided ultra-precise parts to the world of manufacturing.

Is Centerless Grinding Right for You?

When it comes to centerless grinding, the machine itself can replace turning processes when parts have fine finish requirements, high length-to-diameter ratios or require close tolerances. Centerless grinding comes with many benefits but many machine shops are unable to utilize this machine due to its niche skillset. Justifying the purchase of a centerless grinder requires an adequate workload and employees who have the expertise to operate the machine.

Centerless grinding is a great solution for manufacturers that require high volume production with Rapid rounding and accuracy capabilities. It can be used to create a wide variety of parts quickly and with precision, so if you have a need for this type of work you should consider using an experienced, skilled centerless grinding partner.

Top Centerless Grinding Companies and Suppliers in the USA

Centerless grinding is a machining process used to remove material from a workpiece using abrasive cutting. In centerless grinding, the workpiece is held between two wheels that rotate in the same direction at different speeds.

The three forms of centerless grinding are:

Centerless grinding is typically preferred over other grinding processes for operations where many parts have to be processed in a short time. It is used in numerous industries due to its tight tolerances, excellent finish, ease of automation, and lower cycle times.

This guide is meant to provide insight into the top featured centerless grinding companies and suppliers on Thomas, as well as the top centerless grinding suppliers in the USA by revenue.

Top Featured Suppliers of Centerless Grinding on Thomas

Table 1 below lists the top featured suppliers of centerless grinding services on Included in the information, you’ll find details on each company’s location, year founded, number of employees, and brief summary of activities.

Table 1: Top Featured Suppliers of Centerless Grinding on Thomas

Company Location Year Founded No. of Employees
Acro-Spec Grinding Co., Inc. Riverside, CA 1972 10-49
H. H. Arnold, Co., Inc. Rockland, MA 1920 10-49
D S Wire, Inc. Elk Grove Village, IL 1963 10-49
INSACO, Inc. Quakertown, PA 1947 50-99
Custom Production Grinding LLC Menomonee Falls, WI 1985 10-49
McGuire Grinding Inc. Paso Robles, CA 2006 10-49
Schaffner Machine Company Saint Louis, MO 1940 10-49
LongBar Grinding, Inc. Santa Fe Springs, CA 1967 10-49
Bracalente Manufacturing Co., Inc. Trumbauersville, PA 1950 200-499
Lee’s Grinding, Inc. Strongsville, OH 1958 10-49

Top Featured Suppliers of Centerless Grinding on Thomas—Company Summaries

Acro-Spec Grinding Co., Inc. specializes in thru-feed, in-feed, and cam-out thru-feed centerless grinding. For over 40 years, the company has handled parts made from titanium, stainless steel, brass, aluminum, and plastic materials and lengths up to 14 ft. and 0.05 to 4 in. dia.

H. H. Arnold, Co., Inc. has been serving aerospace, medical and electromechanical markets for over 60 years, specializing in centerless grinding. The company accepts prototype, low-volume, and high-volume blanket orders for grinding parts composed of metal, polymer, and composite materials.

D S Wire, Inc. combines centerless grinding with the straightness of their bar stock to hold consistent tolerances as close as 0.0002 in. The company works on bars checked for surface finish, roundness, and size, grinding parts from 0.004 to 0.312 in. dia.

Situated in Quakertown, PA, INSACO, Inc. has been a precision grinding processor of parts made from ceramics, sapphire, alumina, nitride, silicon, glass, and quartz materials. The company provides automated centerless grinding with high accuracy and tight tolerances, serving the defense, aerospace, semiconductor, and other industries.

Custom Production Grinding LLC is a finishing service company that provides a wide range of services including precision hard turning, runs ranging from prototypes to high-production, and honing. The company has its headquarters located in Menomonee Falls, WI, and serves the OEM, food, garden, mining, construction, and transportation industries, among many others. It was founded in 1985.

McGuire Grinding Inc. is a finishing service company that supplies the aerospace, defense, and medical sectors with precision grinding services including OD, centerless, and surface grinding, as well as CNC turning, milling, saw cutting, and honing services. The company has its headquarters located in Paso Robles, CA, and has been in business since 2006.

Precision grinding is Schaffner Machine Company’s specialty. From a simple clean-up grind to improving the finish to holding strict diameter tolerances, the company meets the market’s centerless grinding requirements. The company handles parts up to 36 in. in length, 0.1 to 1.5 in. outer diameter, and diameter tolerances of up to /-0.0002 in. and works with steel, brass, aluminum, and plastic materials.

An ISO-certified company, LongBar Grinding, Inc., supplies centerless grinding to several business segments, serving the aerospace, dental, electronic, and medical industries since 1967. The company grinds parts to a high tolerance of 0.001 in. and handles lengths up to 40 ft.

At Bracalente Manufacturing Co., Inc., centerless grinding services are performed on part surfaces to achieve finished effects. Cylindrical and surface grinding is also provided by the company, serving aerospace, automotive, agriculture, defense, oil and gas, medical and other industries.

For 50 years, Lee’s Grinding, Inc. has specialized in close-tolerance grinding work, intensively on small parts. The company can deliver high-volume parts as well as prototypes through its in-feed and thru-feed CNC and conventional centerless grinders. The programmable diamond dressing of the grinders enables precise grinding of complicated parts and reduces tooling requirements.

Top Suppliers of Centerless Grinding Services in the USA by Revenue

Table 2 below lists the top suppliers of centerless grinding services in the USA, ranked by estimated annual revenue as found on Besides the revenues, you’ll find details on each company’s location, year founded, and brief summary of activities.

Table 2: Top Suppliers of Centerless Grinding Services in the USA by Revenue

Company Location Year Founded Annual Revenue
Productivity, Inc. Cedar Rapids, IA 1968 250 Mil. and over
Hi-Precision Grinding Corp. Santa Ana, CA 1971 250 Mil. and over
Scot Industries East Troy, WI 1951 250 Mil. and over
Specialty Steel Supply, Inc. Pinehurst, TX 2002 250 Mil. and over
Troy Manufacturing Co., Inc. Burton, OH 1952 250 Mil. and over
Ashley Ward, Inc. Mason, OH 1984 250 Mil. and over
Smyth County Machine Welding, Inc. Atkins, VA 1978 250 Mil. and over
Electro-Coatings, Inc. Houston, TX 1947 250 Mil. and over
Ring Precision Components Jamestown, NY 1945 250 Mil. and over
Poco Graphite, Inc. Decatur, TX 1968 250 Mil. and over

Top Suppliers of Centerless Grinding Services in the USA by Revenue—Company Summaries

Productivity, Inc. is a custom manufacturing company that provides a wide range of machine tools such as equipment for Swiss turning, multi-tasking, milling, and grinding. It also offers electrical discharge machinery, accessories, tools, and other related products. The company has its headquarters located in Cedar Rapids, IA, and was established in 1968.

Hi-Precision Grinding Corp. is a finishing service company that provides centerless grinding services, as well as lapping and finished part production. The company has its headquarters located in Santa Ana, CA, and has been operating since its founding in 1971.

Scot Industries provides a wide range of services including trepanning, burnishing, honing, skiving, straightening, deep hole boring, and heat treating. The company has its headquarters located in East Troy, WI, and has been in business since 1951.

Specialty Steel Supply, Inc. is a distributor that provides various types of stainless steel, as well as services including centerless grinding, water jet cutting, heat treating, rolling, honing, welding, and trepanning. The company has its headquarters located in Pinehurst, TX, and has been in business since 2002.

Troy Manufacturing Co., Inc. is a custom manufacturing company that provides precision machined parts and components for a variety of industries including aerospace, marine, medical, and automotive. It also offers a vast array of services such as CNC turning, multi-spindle machining, heat treating, broaching, gun-drilling, and grinding. The company is located in Burton, OH, and was established in 1952.

Located in Mason, OH, Ashley Ward, Inc. is a grinding service provider that can handle parts made of aluminum, brass, bronze, carbon steel, and different grades of hot and cold rolled steel. Profile and through feed type of centerless grinding is provided.

Smyth County Machine Welding, Inc. is a custom manufacturing firm that offers various services including CNC machining, grinding, tapping, turning, vertical horizontal milling, plasma cutting, Band sawing, welding, and boring. The company has its headquarters located in Atkins, VA, and has been in business since 1978.

Electro-Coatings, Inc. is a finishing service company that provides a wide range of services including CNC thread grinding, surface grinding, lapping, honing, CNC cylindrical grinding, bar straightening, and lapping. The company has its headquarters located in Houston, TX, and has been in business since 1947.

Ring Precision Components is a custom manufacturing company that provides precision components and tooling, as well as services including design engineering, CNC machining, grinding, milling, turning, EDM, heat treating, reverse engineering, and laser marking. The company is headquartered in Jamestown, NY, and has been in business since 1945.

centerless, grinding, machine

Poco Graphite, Inc. is a manufacturing firm that supplies the biomedical, glass, general industrial product, and electrical discharge machining sectors, among others, with a wide range of services including milling, multispindle milling drilling, high-speed machining, turning, and disk grinding. The company is located in Decatur, TX, and has been in business since 1968.

Top Centerless Grinding Companies and Suppliers in the USA—Summary

Now that we’ve provided you with details on the top featured centerless grinding companies and suppliers on Thomas, as well as the top centerless grinding suppliers in the USA by revenue, we hope you can use this data to further aid your sourcing decisions. If you’re interested in more about centerless grinding suppliers, you can check our Supplier Discovery Page where we have information on 710 centerless grinding suppliers.



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