Centerless Grinding Services

Our centerless grinding services provide high-precision machining for bar stock, delivering superior surface finishes and tight tolerances. Ideal for carbon steel, alloy steel, and specialty materials, we help reduce lead times and improve product consistency.

Your Source For Centerless Grinding Services & Precision Solutions

At Boston Centerless, we manufacture AccuRod® precision bar for a variety of sectors including medical, aerospace, defense, automotive, and many others.

These industries rely on our high precision bar materials to optimize the performance of their products. We also partner with contract manufacturers and material suppliers to augment their in-house capabilities, enabling them to increase the value they can offer to their customers.

What Is Centerless Grinding?

Centerless grinding is a machining process that shapes a workpiece using two rotating wheels – one grinding, one regulating – without the need for a spindle or fixture. The wheels spin at different speeds to control the grinding action and material removal. With quick setup and no fixturing, it’s a fast, flexible method that allows for easy wheel changes to suit various grits and shapes.

Materials & Additional Services

Our team of professionals specialize in precision grinding your material to exceptionally close tolerances. We can perform coil-to-bar conversion services to convert inventory to a smaller diameter. We also offer value-added services, such as heat treating and straightening, as well as material testing and validation services. We can grind a wide range of materials including:

Discover if centerless grinding is right for you.

Benefits & Applications

Centerless grinding is ideal for high-volume production, offering fast turnaround, tight tolerances, and improved roundness and straightness. With 65 years of expertise, Boston Centerless delivers consistent quality from pre-machining to finish grinding using the thru-feed method on customer-supplied materials.

Frequently Asked Questions

We’ve answered your top questions about centerless grinding here at Boston Centerless. Want to know more? Contact us today.

Centerless grinding is a machining process that removes material from a workpiece using two rotating wheels — a grinding wheel and a regulating wheel — without the need for a spindle or fixture. This setup allows for precise diameter control, improved roundness, and efficient high-volume production.

Boston Centerless can grind a wide range of materials including alloy and carbon steels, aluminum, stainless steel, titanium, medical alloys, plastics, red metals, and specialty alloys.

Centerless grinding offers fast turnaround times, tight tolerances, superior surface finishes, improved straightness and roundness, and reduced lead times. It is ideal for high-volume production and consistent part performance.

Boston Centerless provides a thru-feed grinding method depending on material size and production requirements.

Yes. In addition to centerless grinding, Boston Centerless offers coil conversion service, heat treating, straightening, material testing and validation, and other value-added services to support complete production needs.