The market for power tools is strictly segmented by type of equipment, which, depending on the characteristics, is focused on specific tasks. Moreover, the range of operations can be quite wide. Although multifunctionality provides obvious advantages, the highest quality equipment is still aimed at a limited range of work. There are also tools whose capabilities and effectiveness seamlessly blend with versatility. These include a punch. What is this tool from the point of view of the builder? In essence, it is an impact drill that allows holes to be drilled in solid materials.
Device and principle of operation
The function of the hammer drill is realized through a pneumatic mechanism that drives the piston, which, in turn, acts on the hammer. In the process of performing the working action, the impact force is transmitted to the equipment with reciprocating movements. As a result, the working part contacts the solid base, which leads to the destruction of its structure. It should be noted that the best perforator with the most effective impact has a power of about 2000 watts. However, for home purposes, the optimal will be not so much powerful as an ergonomic tool. Such models are closest to traditional screwdrivers, since they also cope with drilling tasks in non-solid building materials. Professional rotary hammers are rarely used for such needs.
What tasks does it solve?
As already noted, shock impact is the main difference that a perforator has. What is impact in the context of construction? This is the ability of equipment to make holes and niches of a different format in concrete, stone and brick. Such activities are usually carried out during the laying of communications. Accordingly, the necessary equipment should be prepared before work.
Drills and large-diameter crowns are required for works with plumbing or sewage - the maximum reaches 160 mm. However, not every model can be provided with such a nozzle. It depends on which cartridge is used for the punch, although modern modifications support the possibility of using adapters. The minimum drilling diameter is on average 10-15 mm. This is enough to form holes for electrical communications.
Tool varieties
The main classification of perforators involves separation according to the principle of nutrition. Traditionally, this tool is available in a network format, that is, with a connection to an outlet. The disadvantages of such models include limitations associated with the cable length. This minus is deprived of a cordless rotary hammer, which is most often powered by lithium-ion batteries. The owner of such equipment can carry out work even away from sources of energy supply, which is very convenient at outdoor construction sites. But in this case, there are already temporary work limitations due to the capacity of the battery pack.
There is another classification of modern perforators - by the type of cartridge. Distinguish between SDS-plus and SDS-max systems. The first allows you to quickly change equipment in the form of drills with shanks up to 10 mm, and the second can work with diameters up to 18 mm.
Popular brands
Today, market models of rotary hammers from a variety of manufacturers are available, both for professional and domestic purposes. Manufacturers “Makita”, “Interskol”, “Hitachi”, etc. produce the highest quality products. In the lines of these brands you can find high-performance universal devices with an impact force of about 30 J. Also, for simple operations with wood and soft metals, you can find inexpensive ones. but convenient models, the impact potential of which is 3 J. To solve critical tasks in the professional sphere, it is advisable to turn to brands of the Metabo and Bosch level, in whose families you can find a multifunction puncher. What is a modern and multi-functional rotary hammer? This is not just a percussion drill, but also a machine that has wide auxiliary equipment. These same companies, for example, produce industrial vacuum cleaners that eliminate one of the main problems of such a tool - the formation of large amounts of dirt during operation.
Repair and maintenance
A high-quality tool most often fails due to violations of the operating rules. To minimize the risk of damage to the device, regularly lubricate the functional elements with special oil, check the reliability of the fasteners and, most importantly, clean the housing surfaces from dust every time after work. As for the problems of the internal “stuffing”, they basically boil down to a malfunction of the electric motor, poor fixation of the accessories, a short in the stator, etc. Therefore, just in case, you should have such parts for a perforator as a brush assembly, collector and same gear. To increase the reliability of the electric motor, carbon brushes should also be changed in a timely manner.
Conclusion
The hammer has many options. In addition to the main classifications, it is worth considering the values for specific characteristics. For example, impact force, power, cartridge size - all this will help to make the best choice. Do not forget about the additional functions that are endowed with a modern punch. What is a modern multifunctional power tool? It features a perfectly functioning internal base, as well as ergonomic devices. So, professional models are often supplemented with a second handle for more comfortable holding the device during the impact. More and more compact flashlights also appear as auxiliary equipment. With their help, the user can perform drilling and chiselling operations in hard-to-reach places without additional equipment.