Serving the Centerless Grinding needs of our valued customers


Rhode Island Centerless was incorporated in 1988 and has at present a combined experience in centerless grinding of over 100 years.

We are located in a 7500 square foot facility at 24 Morgan Mill Road in Johnston, RI, just west of Providence, with easy access from interstate highways.


Services And Capabilities

Infeed, Form, and Step Grinding.

Thrufeed Grinding up to 6" Diameter.

Barstock and Wire to .020" *

Experienced in Grinding Most Metals: Steel, Aluminum, Plastics, Rubber, Carbon, Glass and Copper as well as Aerospace Materials.

Tolerances as Close as .0001 for Smaller Diameter Infeed and Form Grinding.

Surface Finishes to 4 Ra

10 Centerless Grinding Machines (2 Machines Equipped With Computers)

Supporting Equipment: Surface Grinder, Lathe, Milling Machine, 50 Ton Hydraulic Hand Press, Drill Press, Welding Equipment, and an Arbor Press

Forklift, 5000 lb Capacity (With Boom, 1800 lb Capacity)