If we talk about power tools, the most popular and easiest to use is a screwdriver. You can, of course, and how in ancient times screw the screws and screws with a screwdriver. However, firstly, it takes a fair amount of time, and secondly, this is a rather large load, especially if the amount of work ahead is large. If you need a screwdriver to tighten a couple of screws once a year or to install a shelf, you hardly need to buy expensive professional equipment. But, if you are going to make money by repair on an ongoing basis, then picking a high-quality professional screwdriver is your key task. After all, how many orders will you miss, fiddling with a cabinet with a screwdriver all day. How to choose a screwdriver?
The selection of a screwdriver should not start with the price. There are important parameters to pay attention to. We will consider them in this article.
But before that - about the brands of screwdrivers and the choice of place for their purchase. If you want to get a power tool that will last long enough, it is better to buy well-known and more expensive brands. It’s better not to save on this; buying a quality tool is justified. You get a quality guarantee, replacement and repair will be carried out without any hitches and problems. Therefore, it is best to buy in specialized stores. It is more reliable and besides consultants will always tell you how to choose a screwdriver.
All power tools can be divided into household and professional. Professional is more expensive, but also designed for large, long-term loads. So the choice of a screwdriver will depend on the scope of the proposed work. If you think it is better to buy a professional right away and count on his lifelong work, then I hasten to upset. Like all electrical equipment, a screwdriver simply becomes obsolete over time. A professional screwdriver is worth buying only when you expect to use it regularly.
How to choose a screwdriver based on its characteristics. Let's start with concepts such as speed and torque. Standard high-quality screwdrivers have a rotational speed of 350-500 rpm, and the torque is about 20 N / m. Such power is enough to easily carry out installation work. But if you want the tool to be able to drill or even perforate, then the screwdriver should have a rotation speed of more than 1200 rpm, and the torque should be up to 80-100 N / m. Also, to use punching, a hammer drilling mode is required. Some professional models have two speeds: one for twisting, the other for drilling.
Which battery to choose for a screwdriver? Most screwdrivers operate on battery power. Thanks to this, they are quite mobile and light. This allows them to be used in places where there is no power supply. There are several types of batteries, so the question "how to choose a cordless screwdriver", the answer 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 withstand up to 1000 charges and are not “afraid” of low temperatures. However, they have a serious drawback - the memory effect. 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 no such drawback, but they are “afraid” of work in low-temperature conditions.
How to choose a screwdriver? You also need to pay attention that the kit has a removable battery. This choice eliminates downtime. And pay attention to the battery capacity - the more it is, the better. That’s probably all, good shopping.