[{"data":1,"prerenderedAt":155},["ShallowReactive",2],{"blog-en-\u002Fblog\u002Fwhat-are-carbon-graphite-brushes-in-electric-motors":3,"blog-related-\u002Fblog\u002Fwhat-are-carbon-graphite-brushes-in-electric-motors":136},{"id":4,"title":5,"alternateArticle":6,"authors":7,"body":13,"category":122,"contentOrigin":123,"date":124,"description":125,"extension":126,"image":127,"lastUpdated":128,"meta":129,"navigation":130,"ogImage":131,"originalArticle":132,"path":6,"seo":133,"stem":134,"tags":131,"__hash__":135},"blog_en\u002Fblog\u002Fwhat-are-carbon-graphite-brushes-in-electric-motors.md","What are electric motor brushes?","\u002Fblog\u002Fwhat-are-carbon-graphite-brushes-in-electric-motors",[8],{"name":9,"position":10,"avatarUrl":11,"link":12},"Arturo Romero","CIO","https:\u002F\u002Fgithub.com\u002Farturork.png","https:\u002F\u002Flinkedin.com\u002Fin\u002Farturork",{"type":14,"value":15,"toc":114},"minimark",[16,20,23,26,31,34,50,53,56,59,67,71,74,78,81,98,102],[17,18,19],"p",{},"For an electric motor to work it needs electricity and one of the fundamental\nparts for this to happen are the brushes. To better understand how they work and\nthe types, let's first answer the million dollar question: what are the brushes\nof an electric motor?",[17,21,22],{},"Beyond knowing what the brushes of an electric motor are, it is essential to\nunderstand how they work and how important they are. Carbon brushes are used to\nmake the electrical connection between the rotor of an electric motor (the\nrotating part) and the fixed part.",[17,24,25],{},"The rings on the rotating shaft are generally made of copper and are connected\nto the rotating coil. The brushes are responsible for putting pressure on these,\nalso called collectors, to allow electricity to pass through so that the motor\ncan start.",[27,28,30],"h2",{"id":29},"types-of-brushes","Types of brushes",[17,32,33],{},"Now that we know what electric motor brushes are, it is important to mention\ntheir classification according to the type of material they are made of and\ntheir specific properties. Electric brushes can be divided into five main types:",[35,36,37,41,44,47],"ul",{},[38,39,40],"li",{},"Amorphous carbon which are generally used for small motors with high\nrevolutions.",[38,42,43],{},"Electro graphite are mainly used in loading machinery or in direct current\nmotors or alternating current motors with rings. In these, it is important to\nspecify that they work perfectly with powers higher than 25 kilowatts, as well\nas intensities between 300 and 400 amperes.",[38,45,46],{},"Bakelite brushes, made of bakelite, which are resistant to large amounts of\ncurrent at start-up and can regulate the power of the motor itself.",[38,48,49],{},"Flat brushes work best in applications that need a lot of conductivity, such\nas lightning rods, and in very small spaces.",[17,51,52],{},"Finally, metallo-graphitic brushes are ideal for a motor with very high currents\nand low voltages, which is why they are often used for forklifts or cranes.",[17,54,55],{},"When the starter motor has failures, it is very frequent that these occur due to\nthe wear of the brushes, a matter that is fixed by replacing them. It is\nimportant to take into account that the brushes are in a context of permanent\nfriction, so over time it is normal for them to wear out and not make good\ncontact with the collectors.",[17,57,58],{},"Recently, brushless electric motors are being built, but this part is still\npresent in household appliances, as well as in electric and industrial vehicles.",[17,60,61,66],{},[62,63,65],"a",{"href":64},"\u002Fcontact","Contact our sales team"," who will be\nable to advise you on graphite raw material for the production of electric\nbrushes.",[27,68,70],{"id":69},"limitations-to-consider","Limitations to consider",[17,72,73],{},"Performance depends on graphite grade, grain orientation, temperature, load, pressure, speed, and operating environment. Material selection should be confirmed for your actual process conditions.",[27,75,77],{"id":76},"information-needed-for-a-quote","Information needed for a quote",[17,79,80],{},"To guide selection or prepare a quote, ESGRAF typically needs:",[35,82,83,86,89,92,95],{},[38,84,85],{},"Application and operating conditions (temperature, atmosphere, load).",[38,87,88],{},"Dimensions, technical drawing, or CAD file when applicable.",[38,90,91],{},"Required quantity.",[38,93,94],{},"Requested grade or material currently in use.",[38,96,97],{},"Observed issue with the previous part or lubricant, if any.",[27,99,101],{"id":100},"request-a-quote","Request a quote",[17,103,104,105,109,110,113],{},"Share these details with our team at ",[62,106,108],{"href":107},"\u002F","ESGRAF"," or ",[62,111,112],{"href":64},"request information",". A specialist will review your application before recommending a grade or geometry.",{"title":115,"searchDepth":116,"depth":116,"links":117},"",2,[118,119,120,121],{"id":29,"depth":116,"text":30},{"id":69,"depth":116,"text":70},{"id":76,"depth":116,"text":77},{"id":100,"depth":116,"text":101},"Use cases","translation","2020-11-06","Brushes for electric motors are indispensable for their operation. Carbon brushes are used to make the electrical connection between the rotor of an electric motor (the rotating part) and the stationary part.","md","\u002Fassets\u002Fblog\u002Fcarbon-brushes-for-motors.webp","2026-07-22",{},true,null,"\u002Fblog\u002Fque-son-las-escobillas-de-un-motor-electrico",{"title":5,"description":125},"blog\u002Fwhat-are-carbon-graphite-brushes-in-electric-motors","68_5e0W41spM8lyVrCCU8OrWkIM4MznGqUEWNJx2uzM",[137,143,149],{"path":138,"title":139,"description":140,"image":141,"date":142,"category":122},"\u002Fblog\u002Fspheroidal-graphite-cast-iron","Spheroidal graphite cast iron - in which industries is it needed?","Cast irons are a group of ferrous alloys that have a large number of properties and have above 2% carbon. In these cases the carbon does not dissolve completely in the iron and solidifies in the form of graphite or iron carbide. One of the types is spheroidal graphite cast iron or nodular cast iron.","\u002Fassets\u002Fblog\u002Fspheroidal-graphite-cast-iron.webp","2020-12-22",{"path":144,"title":145,"description":146,"image":147,"date":148,"category":122},"\u002Fblog\u002Fbenefits-graphite-dielectric-properties","Anisotropic conductivity of graphite: conductor and insulator by direction","Graphite is not a uniform dielectric: it conducts well in the basal plane and behaves like an insulator perpendicular to the layers. That anisotropy explains its role in EDM, brushes, and thermal components.","\u002Fassets\u002Fblog\u002Fbenefits-graphite-dielectric-properties.webp","2020-12-15",{"path":150,"title":151,"description":152,"image":153,"date":154,"category":122},"\u002Fblog\u002Fcrystalline-graphite-flake","Crystalline flake graphite: utilization and impact in the industry","Graphite is a mineral that can be obtained naturally but also artificially. artificially. It is one of the most stable allotropic forms of carbon and has a wide range of industrial uses. It is one of the most stable allotropic forms of carbon and has a wide range of applications due to its characteristics.","\u002Fassets\u002Fblog\u002Fcrystalline-graphite-flake.webp","2020-12-10",1785448972892]