Grinding is a process of refining products or objects. It is changing the objects from one state or form to another state or form. Grinders are used extensively for our daily purposes. Grinders are made to cater to various purposes and needs in our daily routine. Some of the purposes for which grinders are essential are grinding, powdering, sharpening, polishing, and digging. There are several specifications of grinders, like power required to operate, size, types of blades used, and materials used for production. They vary with the purpose for which the grinders are put to use.

The different types of grinders available are wet grinders, coffee grinders, pepper grinders, salt grinders, meat grinders, herb grinders, stump grinders, and surface grinders. Wet grinders are used for the purpose of grinding or blending foods like rice, dhal, coconut, chilies, and so many other things. The end product got here is not in powder form, but in the form of a batter. They are available in standard models, table top models, tilting models, and more. These types are available in various models and capacities (in liters). Price range varies for each model and capacity. Coffee grinders are used for grinding coffee beans into powder form. It is a common household article everywhere. On the basis of the quality of the powder, the speed with which the process is done, and the blades used in the process, they may be divided into three types. These are the conical burr grinders, burr grinders and electric blade grinders.

Pepper and salt grinders are used to grind peppercorns or salt to get fresh flavored pepper or salt. The salt or pepper mill consists of two metal burrs which do the actual process. Herb grinders are used specifically for the purpose of grinding herbs. The blades are specially designed to cut flowers, tree barks, roots, and other plant materials. They are available in different sizes, shapes and price ranges. Meat grinders are used to mince or chop meat. They may be manually operated or electrically operated. The amount of meat to be processed decides the type to be purchased. The price range varies accordingly. Surface movers are used for the purpose of polishing any surface. The stump grinders are used for clearing stumps, digging holes, and pruning.