Angle grinders, also known as grinders or disc grinders, cut, grind and clean metal and stone. Of course, stone processing and installation industry is used more. By installing marble cutting discs, polishing discs and wool wheels, various stone materials can be cut, polished and polished.
Place grinding wheel on angle grinder to become a cutting machine that can be used to cut and polish some metal materials such as making anti-theft stainless steel windows, light boxes, etc.
In fact, angle grinders are divided into two types: brushed and brushless.
The traditional angle grinder is inseparable from carbon brush, so traditional angle grinder is also called brush angle grinder. The brush is an industrial consumable. It is used together with a commutator to realize motor current commutation. The performance of brush directly affects reliability of angle grinder motor.
But replacing a carbon brush is very troublesome, so a brushless angle grinder came out. The brushless grinder does not use carbon brushes to transfer, rotor is pressed by a solid silicon steel sheet, which is magnetic, and magnetic field becomes stronger after electrification.
Which is better, brushed or brushless, for an angle grinder?
We compare by torque, efficiency, service life, cost, etc.:
1. Torque: The brushless motor has magnetic force, and magnetic force is stronger after power on. The torque of brushless angle grinder is larger than that of brush angle grinder.
2. Efficiency: At same idle speed, speed drop of brushless angle grinder is smaller than that of brush angle grinder, and efficiency is also higher.
3. Service life: The service life of a brushed angle grinder is limited by wear of carbon brush and aging of commutator. Generally, commutator will be scrapped if carbon brush is replaced once or twice, but brushless angle grinder does not work carbon brushes to increase service life.
4. Saving consumables: The brushless angle grinder does not require use of carbon brush consumables, and reduces power consumption and friction resistance caused by friction between carbon brushes and copper heads, which can save consumables and reduce production costs.
However, traditional brush angle grinders are still used in many factories. This is mainly due to fact that brushless angle grinders are limited in technological capabilities, and their disadvantages, such as short life and low power, still exist.
The above is contents of this angle grinder, hope you find it useful.