Почему ИСКРЯТ и ГОРЯТ ЩЕТКИ на БОЛГАРКЕ!!! Ремонт или Замена Болгарки УШМ

Why do brushes on an angle grinder spark and burn out so quickly? Let's look at the causes and troubleshooting methods. Severe sparking often indicates impending tool failure. It's important to promptly identify the cause of the increased sparking and take steps to eliminate it. Causes of Electric Motor Brush Sparking Brush wear. If these components are severely worn, the electric motor won't reach full speed and may not turn on (constantly or intermittently). In this case, with the appliance running, you can use an insulated screwdriver to press the brush against the armature. If you observe an increase in motor speed, the problem has been identified correctly. Replacing the worn parts with new ones will likely correct the situation. Sometimes, replacing the brush holder springs is also necessary. Interturn short circuit in the armature winding. A broken armature can be a potential problem with appliances with electric motors. In this case, sparking will be observed in the area of ​​both brushes, and the armature winding will also become very hot due to some contacts receiving a higher current than others. To repair this fault, the armature winding is rewound or the part is completely replaced. Stator failure. When the stator is faulty, sparking is usually only observed in one brush. To check the stator, the resistance of the windings must be measured. Equal resistance in both windings (usually 4 ohms) indicates a functioning stator. Different resistances in the windings indicate a faulty stator and the winding must be rewound. Commutator contact shorting. As the contacts wear, graphite dust accumulates between them, shorting them out. In this case, large sparks are observed when the electrical appliance is operating. To fix the problem, clean the spaces between the contacts of any graphite dust. It's also important to check the commutator brushes, as their proper placement and shape minimize dust accumulation. Clogging of the commutator contacts. If the contacts are contaminated with carbon, both brushes will spark, and the electric motor will not be able to reach full power. Carbon buildup on the commutator occurs when it overheats. Poor electrical contact will increase the resistance of the element, which in turn will lead to even more sparks and carbon buildup. In this case, it's necessary to clean the commutator contacts of carbon deposits. This is done with fine-grain sandpaper. It's important not to damage the shape of the contacts during cleaning. Therefore, special cleaning pads should be used. At home, you can use a drill for cleaning. Place the armature in the chuck, rotate it at minimum speed, and gently press the sandpaper against the commutator. The direction of rotation of the armature during cleaning should match the direction of rotation in the electric appliance. DIY GRINDING GRINDING DRILL!!!    • САМОДЕЛКА из БОЛГАРКИ !!! КРУТАЯ ИДЕЯ для ...   My channel:    / dmitriiizumov   VK.com: https://vk.com/id197936402 Playlists: ① ⚒ All videos ⚒    • ✔  все  видео   ✔   ② ❊ PerepelKino ❊    • ⚘ ПерепёлКино ⚘   ③ ⚒ Workshop ⚒    • ⚒ мастерская ⚒   Optimization - DO NOT read: grinder repair, stator replacement, grinder repair, bearing replacement, rotor replacement, grinder repair, brush replacement, practical grinder, how to choose a practical grinder, rotor intact, stator intact, new brushes, why is my grinder sparking??? Commutator, deformation, sparking, intermittent operation, twitching, increased sparking, uneven commutator wear, grinder sparking, how to fix, how to check the stator, how to check the anchor, power tool diagnostics, interturn short circuit: how to determine whether it's the anchor or the stator, what's broken in the grinder, interturn short circuit definitions, interturn short circuit indicator, why the brushes are burning, short circuit indicator, grinder getting very hot, little-known breakdown, angle grinder sparking, brush tunnel, grinder broken, angle grinder, angle grinder, grinder, replacement, brushes, why it won't turn on, overheats, works, how to make brushes yourself