Low-speed drills: features, characteristics and tips for choosing

When choosing a tool for professional builders, be sure to buy a low-speed drill. This device, due to the reduction in the twisting speed, develops tremendous power. Therefore, it can be used to mix concrete and drill large holes in very hard materials.

There are 4 main cases, at which the presence of a large torque is unacceptable.

• threading on pipes and other structures;
• mixing of various construction, repair and finishing mixtures;
• preparation of large holes;
• flaring.

Since low torque drills are usually heavy, most are equipped with a pair of handles. Holding such a tool with two hands is both easier and safer. Typical parameters for a low speed drill are:

• power from 0.9 to 1.6 kW;
• rotation rate from 400 to 650 turns per minute;
• weight from 3 to 4.5 kg;
• punched holes up to 2.8 cm.

First of all, you should pay attention to how serious work is planned. Lightweight mechanisms, ranging from 0.7 to 1 kW, have everything you need to carry out minor finishing work. But if major repairs are planned, especially construction from scratch, drills with a capacity of up to 1.5 kW will be required. A mixer drill stands out in a special group. It is capable of simultaneously drilling and mixing solutions. A drill mixer is not just a powerful drilling machine. It must have a modern microelectronic system. Depends on this system:

• comfort at work;
• safety of workers;
• flexibility of adjustment for a specific task;
• tool life.

In addition to the drilling machine itself, attention must also be paid to the selection of nozzles. Almost all drills sold now have standardized thread spindles. Most of the leading manufacturers have appreciated its merits and do not try to invent their fastening methods from scratch.

The low-speed drill, supplied under the Zubr brand, is made in China. But, contrary to the popular stereotype, the products of this brand are quite convenient and comfortable to work with. Reviews indicate that she:

• professionally designed;
• suitable for a wide range of tasks (you just need to choose the right model);
• is relatively inexpensive.

Drills from Makita are also a good choice even for novice builders and repairmen. The Japanese corporation has managed to create excellent tools that have been in use for a very long time. Therefore, they are also appreciated by professionals.

A striking example is modification 6014 BR. With a power of 0.85 kW, it:

• develops a torque of 550 Newton meters;
• compatible with attachments up to 1.6 cm;
• relatively light (weight 2.5 kg).

Quite good reviews from consumers are received for the products of the Russian company Interskol, including the D-16 / 1050R model.All drills come in a decent base package. There are also many attachments and auxiliary handles. The already mentioned model is compatible with attachments up to 1.6 cm inclusive. Its weight is 3.8 kg, and the power consumption is 1.05 kW.

You should definitely take a closer look at the products of the Chinese concern Sturm. The company offers both cheap and expensive modifications. They are lighter and smaller than competitors' products. This is not reflected in practical characteristics. So, for the most popular version - ID20131:

• power reaches 1.1 kW;
• the torque can be 800 Newton meters;
• weight is 3.5 kg.

Rebir IE-1206ER-A is also a good option. The designers have taken care of full protection from dust, which allows you to work even in adverse conditions. The ergonomics of the handle are appreciated by consumers. A feature of the gearbox and intermediate shield is a long period of operation. After finishing work, it is easy to remove the drill thanks to the switch to reverse.

The power plant (in other words, the motor) of the drill with which the tree is drilled must be powerful enough. This allows you to work by creating holes of large diameter and noticeable depth. This is an objective fact: it is very difficult to explain correctly why a high-speed drill is not suitable for the same job. This would require a brief summary of a whole section of physics here.

Another thing is more important: in order to pierce a pine board or panel with a twist drill with a diameter of 2.5 cm, it must be inserted into a 0.8 kW drill. Preference should be given to a tool capable of operating at multiple speeds. For a full-fledged construction of a house from scratch, a 1.3 kW drill is suitable. Experts recommend choosing a model with a three-stage gearbox. When it is planned to work in winter, it is advisable to use a drill with the thickest cord possible - it is the most reliable.

Information on the period of continuous work will help to determine whether a particular tool belongs to the professional class or not. Experienced builders need the drill to run continuously for at least 1 hour. In addition, unlike the household segment, such equipment performs only a narrow range of tasks.

In the next video, you will find an overview of the Rebir IE-1305A-16 / 1700R low-speed drill mixer with reverse.