1) First of all, according to your own needs, the difference is whether it is for home use or professional use. Usually, the difference between professional power tools and general household power tools is mainly in power. Professional power tools have higher power, and general household tools. The power is small, the input power is also small and compact, and the highly integrated power tool is more convenient to use than the bulky and single-function product. Therefore, try to choose power tools with rich functions, small size, simple structure and easy storage. When buying power tools, you need to buy power tools with clear outer packaging and no damage. Obvious shadows and dents, no scratches or bumps, the relevant paint is smooth and beautiful without defects, the surface of the whole machine is free of oil and stains, the handle of the switch is flat, and the length of the wire and cable is generally not less than 2M. The relevant signs of the power tool are clear and complete , parameters, manufacturers, qualification certificates, etc. all have the tools to hold the tool by hand, turn on the power supply, frequently operate the switch to make the tool start frequently, observe whether the on-off function of the tool switch is reliable, and whether it affects the TV/fluorescent lamp on site, etc., so as to Determine whether the tool is equipped with an anti-jamming suppressor. The power tool is powered on for 1 minute. Feel the vibration and observe whether the reversing spark and the air inlet are normal.

(2) Select power tools with noise within the allowable range.

(3) Choose power tools that are easy to maintain and get accessories.

(4) Pay attention to the power supply voltage when selecting power tools. Generally, hand-held power tools need to provide 22V mains power as the energy drive, and do not connect to 380V industrial power, otherwise the machine will be damaged.

Power tool purchase skills

1. If you often drill holes in concrete walls, then a 2kg electric hammer is your best choice. Due to the hammer’s cylinder structure, the hammering force is very high, and with a hammering frequency of 1,000 to 3,000 per minute, it can generate significant force, allowing you to Cordless Brushless Hammer Drill BL-DC2419/20V holes in concrete walls with ease. Equipped with an adapter rod and the chuck of an ordinary electric drill, it can also complete the function of a hand electric drill to achieve the purpose of multi-purpose of one machine. It is a speed-adjusting electric hammer + an adapter rod + a 13 mm electric drill chuck. It only needs a few hundred yuan, and with a few commonly used drill bits, then most of the decoration tasks in your home can be completed by yourself.

2. If in addition to concrete drilling, it is also necessary to take into account the drilling of wood and metal, and the drilling of concrete is less than ten millimeters, and the impact drill can be considered. The impact drill relies on the helical gear to generate impact, and the impact force is not as good as that of an electric hammer.

3. If you frequently tighten or loosen screws, or make holes in wooden or iron plates, then you can buy a rechargeable electric screwdriver, which is the most convenient tool in these two aspects. The cordless electric screwdriver plus a set of screwdriver bits makes it easy to get the job at hand.

4. Everyone must know that the hand drill is suitable for drilling holes on wooden or iron plates, but don’t expect it to do much for drilling holes on concrete walls. Doing so can easily damage the machine. A hand drill is the most economical. The power tools, even imported ones, only cost a few hundred dollars.