If you are a craftsman, you probably have a screwdriver in the arsenal, the price and quality of which suits you. If not, then you are one of those who are just about to make a profitable purchase. This tool will not be indispensable during repairs or during construction work. To solve any domestic problems, such equipment is perfect. However, initially it is necessary to determine the main selection criteria, which will be discussed below. Some consumers carefully study reviews before buying a product, because it is they who sometimes force them to make the right purchase. If the choice is made correctly, then spare parts for a screwdriver will not be needed during the entire period of operation.
Choosing a model for speed and torque
It is important that you review the ranking well before shopping. A screwdriver can be selected based on the feedback of experienced craftsmen. Experts advise taking into account the speed of rotation and torque. The last parameter will determine what force the tool exerts when turning the fasteners. This characteristic also indicates how forcefully the equipment resists the load.
If you want to choose a tool for solving everyday problems, then the torque should vary from 10 to 15 Newton meters. Professionals choose equipment with a torque limited to 135 Newton meters. As a result, craftsmen get the opportunity to work with solid materials. The motor shaft of such a device will be able to complete 1300 revolutions in one minute.
If we are talking about household models, you will have to be content with 500 rpm. It is important to consider the rating before shopping. The screwdriver that you selected based on the recommendations of consumers will meet all the requirements. Depending on the torque, the length of the fastener, as well as its diameter, should be selected. If you compare a screwdriver with other electric tools, you should highlight the possibility of adjusting the torque, for which a limiter is used. This addition is represented by a ring located after the chuck. As soon as the master overcomes the force, after which the screw will no longer enter the wall, he will hear the characteristic sound of a rattle. Such a restriction will protect the tool from tearing the slot, wear of the bit and deeply deepening the fasteners to the surface.
Model selection based on power supply
There is a cordless screwdriver and a power tool. The latter has an impressive mass, and you can work with them without moving far from an electrical outlet. For fans not to depend on the battery charge, it is proposed to purchase an additional extension cord, the meter of which will determine the range of use of the tool. Devices with batteries weigh less, but you can work with them for a very limited time. Consumers choosing a cordless screwdriver value autonomy. If you often have to carry out construction work in the field, then the battery model will be more convenient.
Battery model selection
Consumers who choose comfort, rather than the need to recharge the tool every half hour, are serious about choosing batteries. The latter are represented by three varieties, the first being nickel-metal hydride batteries, the second is lithium-ion, while the third is nickel-cadmium devices.
When to Choose a Nickel-Metal Hydride Cordless Screwdriver
Screwdrivers can be powered by a Ni-MH battery. They have become more common recently, as European models are equipped with just them. They are environmentally friendly, light in weight and small in size. Spare parts for a screwdriver can be purchased in a service workshop, as well as a battery. The main advantage of the aforementioned batteries is the lack of a memory effect, but there are also disadvantages. It is important to remember that such batteries do not like overcurrents and low temperatures. A device powered by this battery will cost more, but the number of recharges in this case is 1500. If you need to store the battery for a long time, you should charge it and leave it in an uncharged state.
When to Choose a Nickel-Cadmium Battery Charger
If you want to choose a good cordless screwdriver, it is important to remember that the aforementioned battery is more toxic, however, the number of recharges it has is twice as much. The cost of tools based on nickel-cadmium cells is slightly lower; batteries of this type are not afraid of frost at all. That is why for Russian conditions they are perfectly suited. But these batteries are characterized by strong self-discharge and memory effect, which can be called significant disadvantages.
When to choose a lithium-ion battery
That consumer who wants to choose a high-quality tool, pre-reads the rating. In this case, a screwdriver will be able to be purchased at an affordable cost and with outstanding characteristics. For example, lithium-ion batteries are not often installed in screwdrivers. They are characterized by maximum sensitivity to cold, and their power is low. The master can count on 3,000 recharges; there is no memory effect on such a battery. Do not be surprised that the equipment will have a high cost, which is not offset by even an impressive capacity. Such batteries are almost not subject to self-discharge, which is why they are convenient to use at home, when you have to use the tool often.
Rating of popular models
Professionals and amateurs are increasingly choosing Makita brand products. Screwdrivers are no exception. As an excellent example, we can highlight the DDF343SHE model, the cost of which is 8900 rubles. The tool is equipped with a quick-clamping chuck, as well as a drill function. The master will be able to work in one of two speeds. At idle, the equipment is capable of producing 1300 rpm. The torque of the model is 36 Nm. Choosing a screwdriver, the price of which should be affordable, you can prefer the company Hyundai, among its models it is worth highlighting the A1220Li, whose price is 5500 rubles. It will be possible to work in one mode - drilling, but use one of two speeds. The maximum idle speed is 1,100 in one minute. The maximum torque is equivalent to 28 Nm.
The combination of good quality and affordable cost
Experts advise to consider the rating. The screwdriver of your choice will have the characteristics you need. In the market for related products, you can find the Hammerflex ACD182. Pay for it will have 4,500 rubles. The device is equipped with a quick-clamping chuck, and you can work in one of 2 modes, namely drilling and screwdriving. The maximum idle speed of this tool is 1200 per minute. This cordless screwdriver has a maximum torque of 22 N · m.