As we all know, Lithium Cordless Drill is a drilling tool powered by AC power supply or DC battery, and is a kind of hand-held electric tool. It is mainly used in industries such as construction, decoration, furniture, etc., and is used to make holes in objects or penetrate objects. Some industries are also called electric hammers. There are more drilling tools on the market now. So how can we choose a good pistol type electric drill?

Today's drilling tools mainly include impact drills and hand drills. Impact drills are generally used to drill concrete or to drill holes in the wall, and the power is relatively high, while ordinary electric hand drills are low-power, drilling iron sheets, wood and so on. And for our general civilian use, the hand electric drill is almost the same. Because the electric drill drills metal wood plastic. Not suitable for drilling buildings is not efficient. Its structure a motor with gear reduction has increased torque.

Lithium drills are one of the most popular hand-held power tools. In order to choose a satisfactory electric drill, you should generally pay attention to the following points.

1. Lithium electric drill products are mandatory certification products stipulated by the National Supervisory Committee. Therefore, when purchasing, you should first check whether the tool has a 3C mark. The method of checking is generally whether it is on the outer packaging of the tool or on the nameplate of the tool. There is a 3C mark, if you still have doubts about it (because the manufacturer of the electric drill has not passed the annual supervision review, the CNCA has suspended or revoked its certificate), you can go to the website of the CNCA to check whether the 3C certificate of the tool is Valid currently.

2. Generally, when purchasing lithium electric drills, you should choose large companies with good reputation and influence, because these large companies have strong technical force, strict quality control, and relatively standardized after-sales service. Users with strong purchasing power can also purchase tools of some international brands.

3. According to the needs of users, first distinguish between household use and professional use. Since most electric drills are designed for professionals, you should first distinguish between professional and general household use tools before purchasing. Generally, the difference between professional and general household tools is in power. Professional tools have higher power to facilitate professionals to reduce the workload. General household tools have relatively small workload due to small projects, so the input of tools Power doesn't need to be huge either.

4. Observe the outer packaging of the electric drill. The outer packaging of the tool should have a clear pattern and no damage. The plastic box is strong, and the buckle to open the plastic box should be firm and durable.

5. Observe the appearance of the lithium electric drill. The appearance of the tool should be uniform in color. There should be no obvious shadow filaments and dents on the surface of the plastic parts, and there should be no scratches or bump marks. The assembly misalignment between the shell parts is ≤0.5mm, and the coating of the aluminum casting is smooth. It is beautiful and free of defects, and the surface of the whole machine should be free of oil and stains. When you hold it by hand, you feel better, and the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters.

6. Check the nameplate and instruction manual of the lithium electric drill. The nameplate parameters of the tool should be consistent with those on the 3C certificate. The detailed address and contact information of the manufacturer and production plant should be listed on the instruction manual. The traceable batch number of the product should be on the nameplate or certificate of conformity.

7. Hold the electric drill with your hand, turn on the power, and frequently operate the switch by hand to make the tool start frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there are any abnormalities in the TV sets and fluorescent lamps on site. In order to confirm whether the tool is equipped with an effective radio interference suppressor.

8. Power on the electric drill and run it for one minute. Hold it with your hand during operation. You should not feel any abnormal vibrations in your hands. Observe the reversing sparks. The reversing sparks should not exceed the level. Look, there should be no obvious arcing on the commutator surface. During operation, there should be no abnormal noise