The responsible master chooses a building power tool in many ways, not forgetting about the possible increase in requirements in the future. Technologies are developing, and with them, the quality of components for equipment is increasing. The choice in favor of metal instead of plastic in the technical filling, for example, can extend the operation for several years. However, the cartridge type is of considerable importance in working with a perforator. This is a structural characteristic that determines the ability of the tool to work with nozzles of a certain size. The most developed in this regard is the SDS-Max puncher, the cartridge of which allows you to work with thin augers, and with wide crowns.
Overview of SDS-Max Models
Like traditional rotary hammers, versions with SDS-Max cartridges are sharpened to perform impact. With the help of such an assistant, you can drill a hole in a concrete wall or brickwork. It makes no sense to purchase it for delicate cosmetic work, since power significantly increases the power potential of the device. And even if you use adapters for the SDS-Max puncher in working with a traditional modification, the shock effect will not justify itself. In this case, the crown will have a large diameter, however, a weak internal filling will not allow to fully reveal its potential. And this is not to mention the features of fixation. Tool shanks are firmly fixed, do not allow the slightest vibration. But on the other hand, the creators also provide for the possibility of a working amplitude of oscillation within the limits allowed by the design. Cartridge displacement averages 3-4 cm.
Varieties
Structural and technical and operational features put such punchers into a rather narrow group of tools. Nevertheless, in this segment there is a division of models into two classes: battery and network. The presence of a battery pack makes the rotary hammer stand-alone, which allows it to be used in any area, regardless of the availability of an electrical outlet. The SDS-Max power drill can be used only at a limited distance from the power supply source - typically 2.5-3 m. In addition, the power system determines the power potential. Although lithium-ion batteries are constantly improving and increasing capacity, for the most part, representatives of this group lose in terms of shock power to network analogues.
Characteristics of SDS-Max rotary hammers
The initial level is represented by models whose impact force is about 7-10 J. At a power of 850 W, such a tool provides a frequency range of 315-600 rpm. Such devices in terms of chiselling efficiency correspond to standard SDS-Plus models. But most often, manufacturers lay a high power potential, reaching 30 J. To provide full-fledged operability of such equipment, a power level of 1500-1700 W is provided. Accordingly, this SDS-Max rotary hammer differs in considerable weight, exceeding 10 kg. For ease of use, manufacturers complement the design of powerful drummers with auxiliary handles.
Manufacturer's Reviews
The middle segment of high-quality rotary hammers of this type is represented by DeWALT, Bosch, Makita, etc. models. These brands are trusted by both professionals and home craftsmen. In the domestic segment, the Zubr SDS-Max rock drill is distinguished, as well as the manufacturers of Interskol and Energomash. In terms of quality and functionality, Russian technology is still inferior to imported competitors, but, as users note, it copes with basic tasks.
The highest segment is represented by Hilti. Experts note that under this brand the most reliable and productive devices are produced. But their cost is noticeably high. If there is no need to perform heavy operations associated with the destruction of walls or ceilings, then it makes sense to turn to domestic models. For example, the same Interskol SDS-Max rotary hammer in the P-45 modification can be considered as universal in terms of repair measures.
How much is?
A quality drill with the SDS-Max system costs at least 10 thousand rubles. Even if for a lesser amount you will find a model under a solid brand, with a greater degree of probability the Chinese filling will be behind the well-known case. Nevertheless, Russian manufacturers in this respect are most attractive - for 10-12 thousand rubles. You can find a very reliable and efficient device. Bosch SDS-Max punch or its equivalents from Makita will cost more. In these families, it is worth focusing on amounts of about 20-25 thousand rubles. But the operational qualities of the device will satisfy the needs of a professional builder.
The most powerful and at the same time durable punchers are offered by the Hilti brand. The SDS-Max segment in this case will be available at prices in the region of 30-40 thousand rubles. Moreover, for this money the user receives far from the highest performance characteristics - the same impact energy may not be 30, but 25-28 J. But this is exactly the case when each declared indicator fully justifies itself in practice of use.
Conclusion
The mechanism of the SDS-Max cartridge undoubtedly enhances and expands the capabilities of the punch. With its help, the owner can equip the tool with drills, the diameter of which reaches 160 mm. At the same time, the fixing system itself remains as convenient as in traditional instruments of this type. Another thing is that the tasks performed by the SDS-Max puncher are purely professional. Even if in everyday life it is required to destroy the wall or drill a large hole, then it is impractical to purchase an expensive machine for a single action. But in the construction work, such a device will come in handy. The main thing is to correctly calculate the capabilities of a particular model and compare them with the requirements. The power system will also be of fundamental importance. Depending on the nature and conditions of the planned operations, it is worth giving preference to either the autonomy of the tool or its power. However, premium cordless versions of rotary hammers often combine both operational qualities.