How to choose a screwdriver?

If we talk about power tools, the most popular and easy to use is a screwdriver. It is possible, of course, and as in antiquity to twist screws and screws with a screwdriver. However, firstly, it takes a fair amount of time, and secondly, it is quite a big load, especially if the volume of the work ahead is great. If you need a screwdriver to twist a couple of screws a year or install a shelf, you do not need to buy expensive professional equipment. But, if you are going to make money repairing on an ongoing basis, then to choose a quality professional screwdriver is your key task. After all, how many orders you will miss, all the day pondering with a cabinet with a screwdriver. How to choose a screwdriver?

The choice of a screwdriver should not start with a price. There are important parameters that you should pay attention to. We will discuss them in this article.

But before that - about the marks of screwdrivers and the choice of a place for their purchase. If you want to get an electric tool that will last long enough, it's better to buy well-known and more expensive brands. On this it is better not to save the purchase of a quality tool is justified. You get a quality guarantee, replacement and repair will be carried out without hiccups and problems. That's why buying is best in specialized stores. This is more reliable and, in addition, the consultants will always prompt you how to choose a screwdriver.

All power tools can be conditionally divided into household and professional. Professional expensive, but also designed for long, long loads. This means that the choice of the screwdriver will depend on the volume of the proposed work. If you think that it is better to buy a professional at once and count on his lifelong work, then I hasten to upset you. Like all electrical equipment, the screwdriver simply becomes obsolete over time. And to buy a professional screwdriver is only when you expect to apply it regularly.

How to choose a screwdriver, based on its characteristics. Let's start with concepts such as speed and torque. Standard quality screwdrivers have a rotational speed of 350-500 rpm, and torque is about 20 N / m. Such a capacity is enough to easily perform installation work. But if you want the tool to drill or even perforate, the screwdriver must have a speed of more than 1200 rpm, and the torque can be up to 80-100 N / m. Also, to use perforation, a drilling mode with impact is required. Some professional models have two speeds: one for twisting, the other for drilling.

What kind of battery to choose for a screwdriver? Basically, screwdrivers work from the battery. Thanks to this they are mobile enough and easy. This allows them to be used in places where there is no electricity. There are several types of batteries, so the answer to the question "how to choose a cordless screwdriver" is not so simple.

Today there are 3 types of batteries:

- nickel-metal hydride;

- nickel-cadmium;

- Lithium-ion.

Each of them has strengths and weaknesses. The first two have similar characteristics. They can withstand up to 1000 charges and are not "afraid" of low temperatures. However, they have a serious minus - the effect of memory. Therefore, they must be fully used before the next full charge. If you do not follow this rule, then these batteries will quickly fail. Lithium-ion batteries have such a lack, but are "afraid" of working in low-temperature conditions.

How to choose a screwdriver? Also it is necessary to pay attention, that in the complete set there was a replaceable accumulator. This choice will save you from downtime. And pay attention to the battery capacity - the more it is, the better. That's probably all, successful purchases.