What are the tips for buying electric drills

Electric drill products are suitable for drilling holes in steel, wood and plastic, and are one of the most popular tools used in handheld power tools. General hardware stores to professional hypermarkets, small to small roadside hardware stores, there are electric drill sales, in order to buy to the heart's content of the electric drill, generally should pay attention to the following points.

First, the drill products are mandatory certification products under the CNCA, so when you buy, you should first check whether the tool has a 3C mark, check the method is generally, in the tool's packaging or tools on the nameplate whether there is a 3C mark, if this is still in doubt (due to the drill manufacturer did not pass the annual supervisory re-examination, the CNCA will be suspended or withdrawn from their certificates), you can go to the CNCA's website to check whether the tool's 3C certificate is currently valid.

Second, the general purchase of electric drills, you should choose a better reputation, more influential large companies, because these large companies have strong technical force, quality control is more stringent, after-sales service is also more standardized. Users with stronger purchasing power can also buy some international brands of tools.

Third, according to the user's needs, the first distinction between home use or professional use, because most of the drill is designed for professionals, so before you buy, you should first distinguish between professional and general home use tools. Usually the difference between professional and general family tools in the power, professional tools with more power to facilitate the professionals to reduce the workload, general family tools due to smaller projects, the workload is relatively small, so the tool does not require a large input power.

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

Fifth, observe the appearance of the drill, the appearance of the tool should be uniform in color, no obvious shadow and dent on the surface of the plastic parts, there should be no scratches or traces of knocking, assembly misalignment between the shell parts ≤ 0.5mm, aluminum castings paint smooth and beautiful without defects, the entire surface of the machine should be free of oil and stains. When holding it by hand, the self-feeling feel is better, and the handle of the switch should be flat. The length of the cable should generally be not less than 2 meters.

Sixth, check the nameplate of the drill and instructions, the nameplate parameters of the tool should be consistent with the 3C certificate. The instruction manual should have the detailed address and contact information of the manufacturer and production plant. The nameplate or certificate of conformity should have a traceable batch number of the product.

Seven, hold the drill by hand, turn on the power supply, frequently manipulate the switch by hand, so that the tool starts frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there is any abnormality in the TV set and fluorescent lamp at the site. In order to confirm whether the tool is equipped with an effective radio interference suppressor.

Eight, electric drill energized to run for one minute, running with a hand grip, the hand should not be obvious to feel any abnormal tremor, observe the commutation spark, its commutation spark should not exceed the level of the general from the air inlet of the tool to the inward, in the surface of the commutator should not be obvious arc light. When running, there should be no abnormal noise.

Electric drill products are suitable for drilling holes in steel, wood and plastic, and are one of the most popular tools used in hand-held power tools. General hardware stores large to professional hypermarkets, small to roadside small hardware stores, have electric drill sales, in order to buy the best electric drill, generally should pay attention to the following points.