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Centerless Grinding: What is it?

Before we had centerless grinding, round parts we needed to manufacture were either ground between centers or by gripping them with a chuck or fixture. Centerless grinding requires nothing like that, instead parts are fed between a grinding wheel and a smaller regulating wheel while resting on an angled workpiece support, which is a blade-like device that sits between the opposing wheels. This kind of grinding is critical for manufacturing high-volume automotive components including valve spools, control rods, camshafts, crankshafts, pistons, sleeves, and rollers. Not only is this kind of grinding important for the automotive industry, but also for the medical and aerospace industries, basically any industry where you need an extremely accurate round object to complete the project you’re doing.

There are three forms of centerless grinding and they are through-feed centerless grinding, end-feed centerless grinding, and in-feed centerless grinding.

  • In through-feed grinding, the workpiece is fed through the center of the two grinding wheels. This technique is best for parts that are cylindrical in shape. It can be set at such an angle that it pulls the material through the grinding process, without the need for any separate feeding mechanism.
  • In end-feed grinding the workpiece is fed into the grinding system until it hits an end stop. After this the grinding process the workpiece goes back out in the opposite direction it was fed. This works well for pieces that are tapered.
  • Lastly, in-feed grinding is the process you will want to use if you need a workpiece that has an unusual shape, like an hourglass shape. To start this process the workpiece is put into the machine by hand, then careful attention is paid to the contours required for grinding to make sure the piece stays in place and the complex grinding comes out how it is supposed to.

At Amerascrew in Mansfield, Ohio we offer centerless grinding to our customers. With two Cincinnati centerless grinders with a 4-inch capacity and an Automatic cycle Royal Master centerless grinder, we have a very wide-ranging capacity. When you pick Amerascrew for your part needs, you can rest assured that we are giving you the very best quality available. We have the resources to take more material off fast with the largest machines and the capability and repeatability of holding fine finishes on small parts. We also have diversity of different grit wheels, through feeding and plunge grinding. So, no matter what workpiece is needed for you projects, we have you covered.

If you are interested in our other services or want to know more about us visit our website. If you have any questions about some of our services, or want to speak with us about your next project, then contact us. We have plenty of experience and the tools needed to make sure your project, no matter how big or small, is taken care of correctly.

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