Comparison Makita BPJ140Z vs Makita PJ7000

- Electrical network 230. Power supply from a 230 V network, in other words - an ordinary household outlet. This power supply allows you to work for almost unlimited time, and it is also suitable for even the most powerful modern milling cutters. On the other hand, in the absence of sockets, the “networked” router becomes useless, and the wire limits mobility and can interfere with work and movement. However, all these shortcomings are not particularly critical, and most milling cutters are produced specifically for 230 V networks.

— Electrical network 110 V. Tools powered in the American and Japanese style - from electrical networks with a voltage of 110 V. Power tools with this operating voltage are produced for the market of North and Central America, the Land of the Rising Sun, and Saudi Arabia. 110V electrical systems are also found in the UK. To avoid failure of the instrument when connected to standard 230 V household networks, you will need an additional connecting link in the form of a step-down transformer or a special 110 V converter.

- Battery. Powered by its own battery. The main advantage of such a tool is that it does not need to be plugged into an outlet during operation; this is very convenient when frequently moving from place to place and allows you to work even in the complete absence of power grids. At the same time, all other things being equal, a cordless router turns out to be much more expensive and heavier than a “corded” one, and the power of such routers is relatively low - otherwise they would require too heavy batteries, and there would be no talk of portability. Additionally, battery life is limited and charging takes quite a long time and still requires external power. In light of all this, there are few battery models on the market, and you should pay attention to them only if the absence of a power cord and independence from sockets are decisive factors.

The total power of the router, more precisely, the engine installed in it. The higher this indicator, the more productive the device is, the better it copes with complex work, the more force on the cutter (torque) it provides during operation, and the greater the spindle speed can be (although a powerful tool is not necessarily high-speed). On the other hand, high power significantly affects the dimensions, weight and price of the tool, plus power consumption and network load increase accordingly. In addition, high torque in some cases (for example, with delicate processing) is frankly undesirable. Therefore, a tool should be chosen according to this parameter, taking into account the real needs and the specifics of the planned work.

There are three main categories of milling cutters in terms of power: light (up to 700 W), designed mainly for simple household work; medium (up to 1500 W), able to cope not only with domestic, but also with most professional tasks; and heavy (1500 W or more), used in cases where high power is critical. However, this gradation is true only for routers (see "Type"), other varieties have their own specifics: for example, lamellar models, in principle, do not need high power.

The highest spindle speed provided by the router motor. Measured in revolutions per minute. For models that do not have speed control (see "Functions"), this paragraph indicates the standard number of revolutions.

For different work, the optimal speed of rotation of the spindle (and, accordingly, the cutter) will also be different. For example, hard materials like stone require fast rotation, but wood does not; some types of nozzles work better at high speeds, others at low speeds, etc. Detailed recommendations for each specific case can be found in special sources. When choosing, it is worth paying attention not so much to the maximum rotation speed as to the general range of speeds - how much it corresponds to the planned tasks. We only note that in models with a large allowable cutter diameter (see below), the maximum rotation speed can be relatively low - the working edge of a large cutter moves quickly even at low speeds, and for effective acceleration of such a nozzle, too much power would be needed.

The largest diameter of the cutter that can be installed in the router.

The larger the cutter, the faster its cutting edge moves and the more material it can capture, but larger nozzles require more torque. Accordingly, the maximum diameter of the cutter is directly related to the power of the tool (see above): the larger the allowable size of the nozzle, the more powerful and advanced, usually, the router is. However, large cutters (as, in fact, high power) are not always really needed. Therefore, when choosing according to this parameter, it is worthwhile to adequately evaluate the upcoming work and not chase the maximum size.

The greatest depth of grooves or holes that the router can make. This parameter is relevant only for lamellar and filler models (see "Type") — in other varieties, such a parameter as the stroke value has a similar value (see below). In most cases, the maximum groove depth does not exceed 30 mm — this is quite enough to use the lamellar / filler router for its intended purpose. In some professional models, this figure can reach 70 mm, but this is very rare.

The number of batteries supplied with the respective tool.

Most modern cordless tools are supplied without batteries. This configuration assumes that the user will purchase additional batteries at his own discretion (many models are compatible with several brands of batteries at once). In addition, this option may be useful if you already have a battery on hand. This happens quite often, since many well-known manufacturers use universal batteries suitable for different types of branded power tools. So, for example, a battery from a previously purchased jigsaw or grinder may well be compatible with a screwdriver from the same company.

The battery-powered kit usually includes one or two batteries. The extended kit provides additional advantages that are especially convenient for long-term continuous use of the tool. Thus, when one battery runs out of charge, it can be quickly replaced with another; and while one battery is in use, the second can be charged. This allows you to minimize or completely eliminate interruptions for charging.

The name of the battery platform supported by the device. A single battery platform is used to combine different power tools of the same brand (screwdriver, angle grinder, circular saw, etc.) into one line. Devices belonging to the same platform use interchangeable batteries and chargers. Thanks to this, for example, there is no need to select a battery for each individual model of power tool, because one battery purchased as a spare can be used in different power tools, depending on the situation or as needed. Batteries of the same platform mainly differ from each other only in capacity.

Nominal voltage of the battery installed in the router of the corresponding type (see "Power Source").

The voltage, like other characteristics of the battery, is selected by the manufacturer in such a way as to ensure the necessary performance of the tool itself. Therefore, when choosing this parameter, you can not pay much attention; note only that more battery voltage may (but does not necessarily mean) more engine power. And accurate voltage data may be needed only in specific situations — for example, when looking for a third-party charger or a replacement battery.

Battery models compatible with the tool.

When selecting a tool, this information is relevant mainly for models without a battery in the kit (see "Included battery"). For tools supplied with batteries, the battery model is more of a reference value - it is indicated mainly "for the future", if a spare or replacement battery is needed. However, this data can also be useful during the selection process - for example, to assess compatibility with a battery already in the household, or to find detailed data on compatible batteries and determine how well they meet your requirements (in particular, there are formulas that allow you to determine the continuous operating time from a specific battery; these formulas can be found in special sources).