When there are skilled male hands in the house, it means that there is someone to put together a new cabinet, hang shelves, and screw in screws with self-tapping screws. But sometimes it is necessary to wrap so many of these very screws or nuts that after an ordinary screwdriver, your hands, like cast-iron, get tired before that. But with a screwdriver it will be possible to do all this without much effort. In order to optimally determine which screwdriver to buy for the house, we consider the characteristics of this device.
Content:
What parameters should have a good household screwdriver
This device will be needed when you need to either screw it in or unscrew the screws, bolts, nuts or screws. By planting a drill, you can make a hole (but only a small one). If you need to drill a large hole, then take a drill as an assistant.
The main parameter of screwdrivers is the torque. It is on this indicator that you need to pay attention when studying the instrument passport.
What is the magnitude of the torque
This parameter shows which surface the tool can handle without problems. The lower the torque, the less dense the material into which the screws need to be screwed. For household tools, a torque of 10 to 20 N · m is sufficient. To protect the electric motor, its coupling is equipped with a special ratchet. Thanks to it, with loads exceeding the permissible threshold (maximum torque), the motor shaft begins to slip.
In a quality screwdriver there is always a device that limits this maximum torque. It is made in the form of a ring, and is located on the axis of the engine immediately after the chuck. The safety clutch protects the nozzle from wear and will not allow the screw to enter too deep into the material.
The limiter can be adjusted. The adjustment levels are from 5 to 22 - better more than less.
Choose the type of food
The screwdriver can be stationary, powered by a conventional outlet, or cordless. The latter option is more mobile, more compact and more convenient. But he also has "pitfalls." If a screwdriver is not used for a long time, then its batteries are slowly dying. It often happens that this screwdriver is lying, and can come to use it once every 2 months. Batteries are discharged, do not receive timely charging and are slowly losing capacity. Therefore, it may be worth taking a look at a not so convenient network device with a long cord - because it will not fail.
Minus - the requirement of constant charging and fast battery failure.
Network screwdrivers will be more weighty and clumsy than their cordless counterparts. But they can be stored as long as you like, and you do not have to worry about charging. A long cord will allow you to do the necessary work, and if it is not enough - an extension cord is at your disposal.
The disadvantage of network models is the high price. But with such a choice, as now, you can find a completely budget network screwdriver.
When choosing between these two types of power supply, think under what conditions you will need to operate the device and make the appropriate choice.
If batteries, then which
The power of the device is determined by the rated voltage of the battery, and the duration of work is determined by its capacity. Household screwdrivers have this indicator at the level of 1.2 - 1.5 Ampere-hours. Further, we note that these same batteries are of three types.
- Nickel-cadmium batteries are generally phased out, as the cadmium contained in them is very harmful to humans. It can cause allergies. But in stores, appliances with such a battery are still sold. This battery is resistant to frost, and can be recharged up to a thousand times. The main disadvantage is that it has a memory effect, which leads to a decrease in charge times from times.
- Nickel-metal hydride batteries are very lightweight. The recharge ability is five hundred times.
- Rechargeable lithium-ion batteries - high-quality, has no memory effect, lasts a long time. Unfortunately, he is afraid of frost.
If you decide to take a cordless screwdriver, check out the video below.
Video: Testing cordless screwdrivers
Charger Type
Professional appliances usually come with a great charging device that can do their job in just an hour. Amateur models charge the battery three, or even five times longer. However, it’s up to you to decide - professional charging models are much more expensive. In my opinion, there is no need to overpay, so you can opt for a simple charger.
Rotation frequency
For high-quality screw tightening, a speed of no more than 500 rpm is sufficient. For drilling, 1300 rpm is required, no less. The best option is the presence of a speed controller.
Choosing the brand of the manufacturer of a screwdriver
A huge selection of models and firms can confuse an inexperienced buyer. He has no idea what a screwdriver is best to buy for a home. They are so similar to each other, except that the colors and designs differ - this is the first impression.
If the amount spent does not play a special role for you, then look at the top three most popular brands. These are Makita, Hitachi and Bosch. Well, yes, you have to overpay for a well-known name, but the tool will please with ergonomics, functionality and durability.
If the device is bought only for small home repairs, you can save. Black & Decker American screwdrivers performed quite well. And you can buy domestic Interskol - this is quite a "workhorse".
We summarize and determine the parameters for a household screwdriver
- When buying a screwdriver, we select a reliable, trusted manufacturer.
- The magnitude of the torque is not less than 10 N · m.
- The engine rotation speed is enough about 400-500 rpm.
- Modes of operation - two. This is twisting and drilling.
- The presence of reverse.
Depending on our requests, we take a model that works either from the mains or portable. What is good and what is bad each of them, was said above. Important: if you buy a battery device, then we look that a spare battery is included in the kit. A couple of tips when buying such a device:
- It is best to take a model with a lithium-ion type battery at home, since such a battery does not have a memory effect at home, it will last longer. This is because at home you will not use the device constantly, and leaving a nickel-cadmium type battery in a long discharge is fraught with a quick failure.
- Battery voltage should be between 10 and 14.4 volts.
- If two different models of a screwdriver have batteries with the same voltage, we select by the amount of charge (the unit of measurement is Ampere-hour). Buy a model that has this parameter more.
Video: Selecting a cordless screwdriver - 1
Video: Choosing a cordless screwdriver - 2
