Electric Screwdriver

Electric screwdriver is a common power tool used to screw fixing and removal. It is also called power screwdriver or motorized screwdriver. Electric screwdriver is an ideal tool for electronic equipment or industrial, commercial, and medical equipment manufacturing that require complex operations. Its compact size is easy to store and carry, can control torque and increase productivity. When the preset torque is reached, electric screwdriver will automatically stop, thus simplifying the operation.

The head of electric screwdriver is equipped with a bit holder, which can be magnetic or have a quick release system. The bit holder allows you to quickly insert the bit corresponding to screw head. The main difference between electric screwdriver and electric drill is that the electric screwdriver is only used for screwing, and electric drill can be used for screwing and drilling.

Types of Electric Screwdrivers

There are two basic types of electric screwdrivers: standard and brushless.

• Standard Electric Screwdriver

The standard electric screwdriver has a small carbon brush inside, the brush is used to conduct electricity between stator wire and rotor wire. Although brushed screwdrivers are effective and accurate, as the use time increases, carbon brush heating will shorten the life of electric screwdriver. Compared to a brushless electric screwdriver, a standard electric screwdriver usually requires more frequent maintenance. The frequency of maintenance depends on the number of screws it tightens every day.

• Brushless Electric Screwdriver

Obviously, a brushless electric screwdriver is a screwdriver that does not contain carbon brushes. Because brushless power tools generate less heat, they have less wear and longer service life. If you want to use an electric screwdriver for long-term and large-scale work, a brushless electric screwdriver is the best choice.

Electric Screwdriver Selection

1. Usage Frequency. If you need to use it for a long time in a day, corded electric screwdriver is the best choice. If you only use 2~3 hours a day, cordless electric screwdriver can meet the demand. Choose according to the working efficiency of electric screwdriver.
2. Torque. High torque electric screwdriver means it has powerful tightening force. Whether screws are screwed in a hard or soft material, the greater the torque, the easier it is to screwing.
3. Power. For a wired electric screwdriver powered by AC power source, its output power directly depends on motor power. If the electric screwdriver is powered by an external transformer, the higher the power supply voltage, the higher the screwdriver power. For cordless electric screwdrivers, its power is related to battery voltage. Some products are called electric impact screwdrivers for intensive tightening/unscrewing.
4. Rotation Speed. Rotation speed is an essential element, especially if the electric screwdriver needs to be used regularly. Rotation speed of a corded electric screwdriver is usually higher than that of cordless ones. Usually, electric screwdrivers have only one speed, and variable speed models are also common. The speed of corded electric screwdriver is above 1,000 rpm. The speed of cordless electric screwdriver is usually between 180 and 450 rpm.

Tool.com provides best electric screwdriver for sale. Torque adjustment and setting function. Various models suitable for mini/small/medium/large torque. Maximum torque available in 0.5~45 kgf. Applicable bits Ф4, Ф5, H5, H6.35. Pen-type portable design, brushless, small size, high precision, reasonable price.