Holding Proper Control For Precision Centerless Grinding

Acquiring the perfect roundness and tight tolerance is possible as long as proper control and support is ensured.

When it comes to centerless grinding, the following words always come up: multifunctionality, precision roundness, tight tolerance, perfect polish, and excellent surface finish.

But how do you effectively achieve the perfect bar?

High volume production is commonly the field for this kind of machining operation. For the grinding of long round bars, like that of a thru feed centerless grinding operation, a simple support of the workpiece is not sufficient for effective operation. Bars with a weight of 450 lbs or more cannot possibly be brought to the high rotational speed needed to acquire the desired finish. The regulating wheel, which imparts a traverse movement and pulls the workpiece past the grinding wheel cannot handle much weight if the support implemented isn’t firm.

Supporting Rollers

Grinding a workpiece using through-feed grinding requires attaching stands with guide rollers in supporting the incoming and outgoing workpiece. Yet, in a heavy machining course, the use of support tables and supporting rollers is highly important. These rollers turn at a rate at which the rotating workpiece reaches a peripheral speed the same as that of the regulating wheel. However it is not the regulating wheel that is responsible for part cutting, but the grinding wheel.

In addition, proper placement and adjustment allow for grinding long bars and even complex parts like out-of-round materials and even workpieces of the smallest diameters to be ground to their required diameter cut.

Superabrasive Wheel

After you have exercised proper preventative maintenance, be sure you have a full range of control to keep your operation running smoothly. This also involves a quick check on your machine including the support and, of course, the wheels.

A constant dressing of the abrasive teeth on the wheel’s surface is an essential part of optimal super abrasive grinding. These abrasive grains dressed on the surface of the wheels are responsible for the grinding bar surface, which includes such important tasks as cleaning, polishing, roughing, and finishing.

Proper Control and Placement

The gap between the grinding wheel and the regulating wheel is highly critical to the surface finish and polish of the bar. It is necessary that the work blade is placed at the proper height as well as the workpiece (bar) for this will significantly affect the likelihood of achieving precise roundness and tight tolerance in the bar.


This process makes the machine capable of any type of cylindrical grinding operation, such as through-feed centerless grinding and in-feed centerless grinding.

If you’re running a high-volume bar production, talk to us and we’ll give you the best machining solutions for your needs!

Contact Advance Grinding to assist your needs or to get a free quote

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