First, how to change the drill1. Disconnect the power supply of the electric drill, unplug the power cord of the electric drill from the socket, and place the drill bit facing upward smoothly.2, the drill card head is to use a special key, ···

What are the specifications and models of electric hammer drillThere are many models of electric hammer drill, we drill different things when the use of the drill is not the same, of course, different materials of the drill model is not the···

1. Working principleThe impact drill mainly relies on rotation and impact to work, although a single impact is very slight, but up to 40,000 times per minute impact frequency can produce continuous force; The electric hammer, which mainly r···

There are many models of electric hammer drill, we drill different things when the use of the drill is not the same, of course, different materials of the drill model is not the same, if you are worried about buying the wrong it is necessar···

Electric drill: It is a drilling machine that uses electricity to do power. It is a conventional product in power tools, and it is also the largest demand for power tools. Electric drills only have a rotary mode and are particularly suitabl···

Rotary hammers, also called "combi drills," are similar in that they also pound the drill bit in and out while it is spinning. However, they use a piston mechanism instead of a special clutch. This causes them to deliver a much mo···

There are no theories, only experienceEquipment, electric drill, percussion drill, hammer, one with higher powerPower drills, but this concentricity is not usually used for tightening screws and grinding coffeeImpact drill, generally the ma···

An electric rotary hammer drill with a safe clutch with a pneumatic hammer. Hammer is the use of compressed gas piston, impact drill bit, need not make much effort, can open 6--100mm in concrete, brick, stone and other hard materials on the···