{"id":28,"date":"2022-04-01T17:14:23","date_gmt":"2022-04-01T08:14:23","guid":{"rendered":"https:\/\/www.fuji-carbon.co.jp\/en\/?page_id=28"},"modified":"2024-11-06T20:13:41","modified_gmt":"2024-11-06T11:13:41","slug":"j_column","status":"publish","type":"page","link":"https:\/\/www.fuji-carbon.co.jp\/en\/j_column\/","title":{"rendered":"What is carbon brush?"},"content":{"rendered":"<section>\n<div class=\"h2_heading_02\">\n<h2>What is carbon brush?<\/h2>\n<\/div>\n<p class=\"text-center sp_mrl-2\">It is a functional component used in electric motors.<br \/>\nCarbon brushes play an active role in automobiles and electrical products that we use in our daily lives.<\/p>\n<\/section>\n<section id=\"various\" class=\"even\">\n<div class=\"h2_heading_02\">\n<h2>Carbon brushes in these places<\/h2>\n<\/div>\n<div class=\"out_line_width\">\n<div class=\"f_box_layout_row_1_col5\">\n<div>\n<h3>Automobiles<\/h3>\n<p><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/2-1.png\" alt=\"Automobiles\" \/><\/p>\n<p>Power windows, starters, wipers, power seats, sliding doors, roofs, etc.<\/p>\n<\/div>\n<div>\n<h3>Power tools<\/h3>\n<p><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/2-2.png\" alt=\"Power tools\" \/><\/p>\n<p>Grinders, screwdrivers, drills, chain saws, hammer drills, etc.<\/p>\n<\/div>\n<div>\n<h3>Home appliances<\/h3>\n<p><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/2-3.png\" alt=\"Home appliances\" \/><\/p>\n<p>Vacuum cleaners, juicer mixers, hair dryers, sewing machines, pumps, high pressure washers, etc.<\/p>\n<\/div>\n<div>\n<h3>Industrial uses<\/h3>\n<p><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/2-4.png\" alt=\"Industrial uses\" \/><\/p>\n<p>Current collectors for overhead wires, slip rings, general DC machines, industrial motors, etc.<\/p>\n<\/div>\n<div>\n<h3>Micromotors<\/h3>\n<p><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/2-5.png\" alt=\"Micromotors\" \/><\/p>\n<p>Office automation equipment, toys, door mirrors, door locks, etc.<\/p>\n<\/div>\n<\/div>\n<p class=\"text-center\" style=\"letter-spacing:-0.05em\">The above are just examples. The electric motors built into these products are all products that we cannot directly touch or see in our daily lives. The carbon brushes that are used in these products are not commonly seen or heard of. We hope this page will help you learn a little more about carbon brushes.<\/p>\n<\/div>\n<\/section>\n<section>\n<ul class=\"f_box f_justify_content_center mb-5 sp_mb-3_child sp_mrl-2_child j_column-gallery\">\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-1.png\" alt=\"\" \/><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-2.png\" alt=\"\" \/><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-3.png\" alt=\"\" \/><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-4.png\" alt=\"\" \/><\/li>\n<\/ul>\n<div class=\"out_line_width\">\n<div class=\"f_box f_justify_content_center mb-5\">\n<div class=\"text-center\"><a class=\"btn2 btn-flat\" href=\"\/en\/product\/\"><span>The carbon brushes we make<\/span><i class=\"fas fa-angle-right fa-position-right\"><\/i><\/a><\/div>\n<\/div>\n<h3 class=\"h3_heading_01\"><span>Origin of the name<\/span><\/h3>\n<div class=\"f_box f_align_items_center mb-5\">\n<div><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-5.png\" alt=\"Origin of the name\" class=\"sp_mb-3\" \/><\/div>\n<div>\n<p class=\"pl-2 sp_prl-0\">The name &#8220;carbon brush&#8221; is often mistaken for carbon paper or carbon fiber, but it is called a carbon brush in the sense that it is a brush made of carbon, not paper or fiber. The name &#8220;brush&#8221; makes one think of a bundle of bristles like a toothbrush or paintbrush, but the reason can be found in the history of motors.<br \/>\nEarly electric motors and generators, invented in the mid-19th century, used brushes made of bundled copper wires (copper braided brushes). Subsequent inventions replaced them with blocks made of graphite (carbon). Therefore, the &#8220;brush&#8221; remains as the name, and it continues to be referred to as a carbon brush.<\/p>\n<\/div>\n<\/div>\n<h3 class=\"h3_heading_01\"><span>Carbon<\/span><\/h3>\n<div class=\"f_box f_align_items_center f_box-wrap-reverse\">\n<div><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/3-6.png\" alt=\"Carbon\" class=\"sp_mb-3\" \/><\/div>\n<div>\n<p class=\"pr-2 sp_prl-0\">Carbon occurs in nature in different forms such as diamond and graphite. It is also produced artificially.<br \/>\nFamiliar examples are binchotan (charcoal) used for grilling and barbecuing, and pencil (mechanical pencil) lead. Binchotan is made by steaming and baking wood, and pencil lead is made by molding and baking powdered graphite from mines. These are made from carbon. In recent years, many of you may have heard of its wide range of uses, from sports equipment such as tennis rackets and golf clubs to the fuselage of the space shuttle.<br \/>\nAs you can see, carbon is used in a variety of ways, and graphite powder is used as the main component of carbon brushes.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"even\">\n<div class=\"h2_heading_02\">\n<h2>Characteristics of graphite<\/h2>\n<\/div>\n<div class=\"out_line_width\">\n<div class=\"f_box_layout_row_1\">\n<div>\n<h3>Chemical<\/h3>\n<p>lightweight,rustless,burns slowly at high temperatures without melting<\/p>\n<\/div>\n<div>\n<h3>Mechanical<\/h3>\n<p>low friction and slippery<\/p>\n<\/div>\n<div>\n<h3>Thermal and electrical<\/h3>\n<p>conducts heat and electricity well.<\/p>\n<\/div>\n<\/div>\n<ul class=\"f_box_layout_row_2 text-color\">\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/4-1.png\" alt=\"Lightweight.\" \/><span>Lightweight.<\/span><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/4-2.png\" alt=\"Prevents rust.\" \/><span>Prevents rust.<\/span><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/4-3.png\" alt=\"Smoothness and sliding properties\" \/><span>Smoothness and sliding properties<\/span><\/li>\n<li><img decoding=\"async\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/4-4.png\" alt=\"Thermal conductivity and electrical conductivity\" \/><span>Thermal conductivity and electrical conductivity<\/span><\/li>\n<\/ul>\n<\/div>\n<\/section>\n<section>\n<div class=\"h2_heading_02\">\n<h2>Role of carbon brushes<\/h2>\n<\/div>\n<div class=\"out_line_width\">\n<div class=\"f_box f_col2 f_align_items_center\">\n<div><a href=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/5-1.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"image_w100\" src=\"\/\/www.fuji-carbon.co.jp\/en\/wp\/wp-content\/themes\/fuji-carbon_en\/assist\/images\/j_column\/5-1.png\" alt=\"Role of carbon brushes\" \/><\/a><\/div>\n<div>\n<p>Carbon brushes come into contact with the rotating parts of a motor or generator and perform the function of energizing while sliding. From the viewpoint of purpose of use, carbon brushes can be roughly classified into rectifying carbon brushes used for DC motors and current collecting carbon brushes used for slip rings. In addition to its role of carrying current, the rectifying carbon brush is required to have rectifying performance to suppress the generation of sparks. On the other hand, the role of the carbon brush for current collection is to energize the rotating slip ring.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"even\">\n<div class=\"out_line_width\">\n<div class=\"h2_heading_02\">\n<h2>Carbon brush grades<\/h2>\n<\/div>\n<table class=\"table_01\">\n<thead>\n<tr>\n<th>Grade<\/th>\n<th>Manufacturing method<\/th>\n<th>Main applications<\/th>\n<th>Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Electrographite grade<\/td>\n<td>Graphitizing by high temperature (2,500\u00b0C or higher) after baking raw materials.<\/td>\n<td>Large and medium-sized industrial motors<\/td>\n<td>Expensive<\/td>\n<\/tr>\n<tr>\n<td>Natural graphite grade<\/td>\n<td>Baking using natural graphite as the main raw material<\/td>\n<td>High speed slip rings<\/td>\n<td>Low friction<\/td>\n<\/tr>\n<tr>\n<td>Carbon-graphite grade<\/td>\n<td>Baking using artificial graphite as the main raw material<\/td>\n<td>Power tools and small AC machines<\/td>\n<td>High load, vibration, braking, noise prevention<\/td>\n<\/tr>\n<tr>\n<td>Resin-bonded grade<\/td>\n<td>Heat treatment at the resin&#8217;s curing temperature using synthetic resin as binder<\/td>\n<td>Vacuum cleaners and small DC machines<\/td>\n<td>High speed<\/td>\n<\/tr>\n<tr>\n<td>Metal-graphite grade<\/td>\n<td>Sintering mixed raw material of metal and graphite<\/td>\n<td>Automotive electronics and small DC machines<\/td>\n<td>Low resistivity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>What is carbon brush? It is a functional component used in electric motors. Carbon brushes play an active role [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-28","page","type-page","status-publish","hentry"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/pages\/28","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/comments?post=28"}],"version-history":[{"count":8,"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/pages\/28\/revisions"}],"predecessor-version":[{"id":108,"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/pages\/28\/revisions\/108"}],"wp:attachment":[{"href":"https:\/\/www.fuji-carbon.co.jp\/en\/wp-json\/wp\/v2\/media?parent=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}