Cylindrical grinder are able to machining many different kind of shapes, but the object must have a central axis of rotation. This includes but is not limited to shapes such as cylinders, ellipses, cams or crankshafts. There are 5 different types of cylindrical grinder machines: outer diameter grinding, inner diameter grinding, plunge grinding, creep feed grinding and centerless grinding.

The grinding method of the centerless grinding is a grinding method in which the cutter is used to support the work piece without supporting the center hole. It is composed of three main parts: grinding wheel, adjusting wheel and supporting cutter.

The main purpose of the grinder machine is surface grinding, which used abrasive tools to grind the work piece to obtain the desired shape, size and processing surface. Grinding machines are usually used when the size of the work piece to be processed is small, and the surface accuracy and flatness requirements are high, and the grinder is not suitable for high complexity processing.