How to choose a hammer drill for home use

Puncher - the tool needed for repair. It can be used to drill holes in concrete walls, and professional models of this tool are used on construction sites when drilling holes in metal profiles. In order to choose a quality construction tool for home or professional use, you need to pay attention to three main technical characteristics: the frequency of blows of the chuck, the magnitude of the impact energy during drilling and the speed of rotation of the spindle.

Ask the seller if the model of the hammer drill has protection against overheating during long-term operation, whether the tool is equipped with automatic equipment and protection against overvoltage in the mains. Consider the importance of the main technical characteristics when working with an electric rock drill.

Main technical characteristics

The chuck impact frequency affects the speed of the jackhammer drilling during construction or renovation. The higher the value of this characteristic, the faster you will drill a hole in the concrete wall. The maximum diameter of a possible hole directly depends on the magnitude of the impact energy. Impact energy is measured in joules. For hammer drills intended for home use, the value of this characteristic reaches 3 J, for professional models, the value of impact energy is up to 15 J.

The hammer drill models intended for home use, the spindle speed can reach 1500 rpm. Have professional puncher models the value of this characteristic can reach 15000 rpm.

additional characteristics

The presence of additional characteristics is a definite plus for rotary hammers. Equipping with additional electronics will allow you to adjust the rotation speed of the chuck. Also, a plus for the hammer drill is overvoltage protection in the power supply and several operating modes. The conventional drilling mode will allow you to make holes not only in concrete walls, but also in wooden profiles. Pay attention to the presence of a removable battery, as the length of the wire does not always allow for comfortable work. If you will be using a corded hammer on a construction site, you will need to use extension cords.

Do not buy rotary hammers with a battery located in the handle of the tool. With prolonged use, the battery overheats, and it becomes uncomfortable to hold the tool.