Angle grinders can be used to cut, grind and clean metal and stone. They are used in many industries and some craft enthusiasts also buy them. Common types are electric angle grinders, lithium battery angle grinders, and pneumatic angle grinders. Do you know difference between these three types? Here is an introduction for you.
1. Electric Angle Grinder
It is mainly powered by 220V single-phase power supply, with sufficient power, stable performance and wide application. But since it has to be driven by a motor, generating heat is relatively easy.
2. Angle grinder with lithium battery
When using power tools, shackles of wire greatly affect user's comfort, and same applies to angle grinders. Lithium angle grinders mainly use pre-storage lithium batteries, which are easy to operate in places with insufficient power and are not highly affected by environment. However, battery power is still limited, so it is more suitable for short-term sanding, and battery life is short. Then price is more expensive, and lithium-ion angle grinders are often more expensive than wired ones.
3. Pneumatic Angle Grinder
The pneumatic angle grinder itself is relatively light, and its power must come from an air pump, so it must be supported by an auxiliary air pump. The advantages are low calorific value, high safety, easy maintenance, small size, light weight and easy to carry.
When choosing, lithium batteries are more expensive than wired batteries, and their power is weaker than wired ones, but they are easy to use, so you need to choose according to your own situation. You can choose two batteries and charge them one by one. As for the pneumatic angle grinder, if there is no special requirement, then it is not considered at all, and can be considered with an air compressor.