A screwdriver is an integral attribute of any repair. Few people today work with an ordinary screwdriver, unless they need to tighten / unscrew one, at most two, screws, and get the power tool longer than they need to work. The popularity of a screwdriver is due to its versatility: it not only knows how to twist and unscrew screws, screws and screws. With the help of this
high power tools you can drill holes in the wood of any species, in some
types of metal. Use electric screwdrivers and when
threading. For all these works, there are special nozzles. Some of them come with the device, others can be bought separately.
Like most tools, electric screwdrivers are divided into household (amateur) and professional. They differ primarily in power. Which one to choose depends on the regularity of its use. If your main occupation is, for example, repairing or assembling furniture, then purchase
better, more powerful, which means a professional and more expensive tool. Usually, professionals choose models with a torque of about 130 Nm. If you use it on the strength a couple of times a month, then it will be enough and not very powerful (torque of about 15 Nm) budget model.
Electric screwdrivers are separated by the method of power supply. They are network or battery. A tool that requires an electrical connection is less popular: it has limited mobility and heavy weight. It’s hard to work with such a tool for long. More convenient battery models. The batteries used are of the following types:
- Nickel-Metal Hydride (Ni-MH) can withstand 500 charges.
- Nickel-cadmium (Ni-Cd) live longer - designed for 1000 charges-discharges.
- Lithium-ion - environmentally friendly, but can not work at low temperatures.
In addition to the number of charges / discharges, batteries also differ in the rate of potential accumulation. Professional models charge in 1 hour, cheaper - up to 7. If you are going to work with the tool for a long time, then to ensure smooth operation you will have to have two batteries: one is working, the other is charging.
When choosing a model, you need to focus not only on technical specifications. It is also important how comfortable the instrument is in the hand, and what its weight is. The electronic speed control function will also be useful: it greatly extends the service life, preventing sudden changes in speed and premature wear of parts. An indication of the remaining charge will not be superfluous: you will put a spare battery on charge in time .
When choosing electric screwdrivers, pay attention to the reputation of the manufacturer. This is one of the main criteria to consider. Russian-made Interskol electric screwdriver is worthy competition to eminent western manufacturers. The lineup presented by this company is quite wide. You can choose both a professional model and a tool for home use. The Makita electric screwdriver is popular among professionals . The products of this Japanese company are of high quality, ergonomic design and reasonable price.