Real power
Power delivered during work directly to the working nozzle. High power, on the one hand, contributes to performance, on the other hand, it significantly affects the dimensions, weight and price. Therefore, it is worth choosing a tool for this parameter, taking into account the specifics of the planned work; recommendations on specific power values for different types of work can be found in special sources.
Max. disc diameter
The maximum disc size that can be installed in a grinder of the appropriate design (see “Type”). Most models are capable of working with nozzles of smaller diameter, but a rim that is too large simply will not fit on the tool due to size limitations.
The larger the disc, the larger the processing area and the depth of cut provided by the grinder. On the other hand, rotating a larger attachment requires corresponding power, which, in turn, affects the price, dimensions and weight of the entire tool. So you should choose according to this parameter taking into account the specific tasks for which you plan to use the machine. Detailed recommendations on this matter can be found in special sources; Here we note that discs are conventionally divided into small (up to 125 mm), medium (up to 230 mm) and large (230 mm or more).
Weight
The total weight of the grinder; for battery models (see "Power Source"), usually, it is indicated without taking into account the battery.
This indicator has two meanings. On the one hand,
light weight has a positive effect on manoeuvrability and reduces fatigue during work — especially when processing vertical surfaces and ceilings, as well as in other situations where the tool has to be held on weight. On the other hand, for grinders with a vibrational principle of operation (see "Type"), used for processing horizontal surfaces, a significant weight is considered optimal: it allows the tool to fit closer to the material being processed, and also contributes to stability and retention. So when choosing such a model by weight, it is worth considering the features of its intended application.
