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Selection of electric drill
Release date:2018-11-2

Drilling products for drilling holes in steel, wood and plastic are among the most popular tools used in hand-held power tools. General hardware stores are large to professional hypermarkets, small to roadside hardware stores, all have electric drill sales, in order to purchase a satisfactory electric drill, generally pay attention to the following points.

1. The electric drill product is a compulsory certification product stipulated by the National Certification and Accreditation Administration. Therefore, when purchasing, first check whether the tool has the 3C mark. The method of inspection is generally on the outer packaging of the tool or on the nameplate of the tool. There is a 3C mark. If there is still doubt about this (because the manufacturer of the electric drill has not passed the annual supervision review, the National Certification and Accreditation Administration 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 Currently in effect.

Second, when purchasing electric drills in general, you should choose large companies with good reputation and influential, because these large companies have strong technical strength, strict quality control, and relatively standardized after-sales service. Users with strong purchasing power can also purchase some tools of international brands.

Third, according to the needs of users, first distinguish between household and professional use, because most of the electric drills are designed for professionals, so before buying, you should distinguish between professional and general household tools. Usually, the difference between professional and general household tools is in power. Professional tools use more power to facilitate the professional to reduce the workload. The general household tools are relatively small in engineering and the workload is relatively small. Power does not need to be large.

Fourth, observe the outer packaging of the drill, the outer packaging of the tool should be clear, no damage, the plastic box is strong, and the buckle of the open plastic box should be firm and durable.

5. Observe the appearance of the electric drill. The appearance of the tool should be uniform in color. There are no obvious shadows and dents on the surface of the plastic parts. There should be no scratches or bump marks. The assembly misalignment between the outer shell parts is ≤0.5mm. The aluminum castings are smooth and beautiful. No defects, the surface of the machine should be free of oil and stains. When holding by hand, the user feels better and the handle of the switch should be flat. The length of the cable should generally be no less than 2 meters.

6. Check the nameplate and instructions of the drill. The nameplate parameters of the tool should be the same as those on the 3C certificate. The manufacturer's and manufacturer's detailed address and contact details should be available on the instruction manual. The serial number of the product traceable should be on the nameplate or certificate.

7. Hold the drill with your hand, turn on the power, and operate the switch frequently with your hands to make the tool start frequently. 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 the spot. In order to confirm whether the tool is equipped with a valid radio interference suppressor.

Eight, the electric drill is energized for one minute, and the hand is held by hand. The hand should not feel any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed the level. Generally, it is from the air inlet of the tool. Look, there should be no obvious arc on the surface of the commutator. There should be no abnormal noise during operation.


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