Comparison DeWALT DWE7491 vs Makita 2704

Saw motor power in watts. For petrol tools (see "Power Source"), horsepower is additionally indicated, see below for details.

The higher the power, the better the tool is suitable for voluminous work and hard materials, the greater the depth of cut it can provide and the easier it can cope with significant loads. In addition, for different types of saws and different types of materials, the actual power values \u200b\u200bcan also be different. For example, a power of 2.5 – 3 kW is actually the limit for chain saws, but in chain saws this is an average figure, among such tools there are models of 3 – 4 kW and even more. Detailed selection recommendations for various cases can be found in special sources.

The maximum speed of the disk, provided by a saw of the appropriate design — disk, cut-off, etc. (see "Device").

Note that most of these saws use gearboxes, so that the blade revolutions are much lower than the engine revolutions (see above). This achieves an increase in torque, which in the case of saws is often more important than the high speed of the blade.

As for the specific number of revolutions, it is first of all worth noting that only saws with the same disc diameter can be compared according to this indicator. In these cases, higher speeds provide better performance, but the trade-off is reduced torque; such saws do better with relatively "light" materials. Conversely, low speeds reduce productivity, but allow the blade to effectively "bite" even into dense, stubborn workpieces. More specific recommendations regarding the choice of a saw according to the number of revolutions of the blade can be found in special sources.

The largest tyre size (in chain saws) or disc (in circular saws and some others, see "Device") that is allowed for this tool. Tyres are sized by working length, rims by diameter.

A larger bar/wheel allows for deeper cuts but requires more powerful motors. Therefore, this parameter cannot be exceeded — this can lead to an overload of the engine with all the corresponding troubles. However, in many models with a disc it is physically impossible to install a nozzle with a diameter larger than the maximum allowable.

Also note that saws with similar bar/blade sizes may differ in maximum depth of cut (mostly due to differences in design or power). As for the specific dimensions, they depend on the type of saw (see "Device"). For example, large discs of 450 – 500 mm are found exclusively in stationary chain saws, the maximum figure for cutting models is 400 – 450 mm, for trimming — 300 – 350 mm, and sizes of 500 – 550 mm or more clearly indicate that speech It's about a chainsaw chainsaw bar. Detailed recommendations regarding the choice of a tool for a given size can be found in special sources.

The greatest depth of cut provided by the saw.

In most types of saws (see “Device”), the depth of cut directly depends on both the engine power and the size of the tyre / disk. The specifications give a value for the maximum allowable size of the working nozzle; when using nozzles of a smaller size, the depth of cut, respectively, will be less. But in band saws, this depth is rather weakly related to the actual length of the tape — it is determined primarily by the length of the open section of the tape, which is directly involved in the work.

Anyway, the greater depth of cut makes the tool more versatile, but comes at the cost of weight, price, and electricity/fuel consumption. So when choosing, it is worth considering the real features of the planned work and the dimensions of the workpieces that are planned to be cut. As for specific values, the most modest tools provide a depth of up to 50 mm ; 50 – 75 mm is considered a low indicator, 75 – 100 mm is average, 100 – 125 mm is above average, 125 – 150 mm is already quite an impressive thickness, and the most powerful modern saws can have a cutting depth of more than 150 mm.

Maximum cutting depth achieved when sawing at a 45° bevel.

This feature is indicated only for those models that are originally designed for sawing at an angle — for example, due to the special design of the attachment for the blade / blade (in stationary models, see "Type") or due to the inclined support platform (in manual) . The maximum angle of inclination of the saw in such models can be different (see below for more details), however, 45 ° is considered the standard option, so it is for this inclination that data on the depth of cut is given.

The general meaning of this parameter is quite obvious. On the one hand, a greater depth of cut allows you to cope with thicker workpieces and generally gives you more options; on the other hand, an increase in depth requires an increase in the size of the disk / canvas and an increase in power, which, accordingly, affects the price, dimensions and consumption of electricity / fuel.

A function that starts the engine smoothly without a sudden jerk and gradually brings the tool up to working speed. It makes the start safer and more comfortable because the saw doesn't jerk in your hands at the moment of activation. In practice, soft start is convenient when you need to make a precise cut in mid-air, work in an awkward position, or simply better control the tool from the first seconds. Compared to models without such a function, the load on the hands, gearbox, and power network is lower. This is especially useful for powerful circular, reciprocating, and chain saws, where a sudden start is felt most strongly.

A feature that quickly stops the saw's attachment after releasing the button or trigger. Depending on the type of tool, this could be the blade, blade, or chain, which stops rotating noticeably faster than with a regular stop by inertia. Motor brake enhances safety because after finishing the cut, the working part doesn't spin for extra seconds. Compared to saws without a motor brake, the tool becomes more convenient for frequent short operations and hand position changes. In practice, this is especially useful for precise cuts, working on a workbench, and in situations where it's important to quickly put away the saw after cutting.

The noise level produced by the saw during operation. Note that this parameter is rather approximate, because in fact, the “loudness of the work” depends not only on the tool, but also on the material being processed and the characteristics of the environment. Nevertheless, the data given in the characteristics make it possible to assess the comfort of working with the tool. The lower this indicator, the less discomfort the noise will cause, and at high values, even special hearing protection may be needed.

Note that the noise level is usually measured in decibels, and this unit is not linear: for example, a difference of 3 dB corresponds to a difference of 2 times, 10 dB — to 10 times. Therefore, it is easiest to evaluate the noise level using comparative tables. Here is a simplified version of such a table for the range in which modern saws operate:

70 dB — loud conversation of several people in close proximity;
75 dB — a cry in the immediate vicinity;
80 dB — truck engine, mechanical alarm ringing;
85 dB — loud scream;
90 dB — freight car at a distance of 7 – 10 m;
95 dB — subway car at a distance of 7 – 10 m;
100 dB — industrial shop;
110 dB — tractor engine;
120 dB — demolition hammer, thunder from a close lightning strike (pain threshold of auditory perception).

The size of the desktop provided in the design of the tool.

The working table is called the plane on which the workpiece is placed; it is found exclusively in stationary saws (see "Type") — in particular, circular and combined (see "Device"). The larger the desktop, the more convenient it is to use a saw with large materials; on the other hand, this nuance directly affects the dimensions of the tool.