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 Thomasnet.com. 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
T & K Precision Grinding	Melrose Park, IL	–	–
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.

T & K Precision Grinding is a finishing service company headquartered in Melrose Park, IL, that supplies the automotive, aerospace, construction, and nuclear industries with various metal finishing services including plating, grinding, and refinishing. The company works with various metals including steel, and stainless steel.

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 Thomasnet.com. 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.

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.