{"id":421,"date":"2026-07-19T10:06:21","date_gmt":"2026-07-19T10:06:21","guid":{"rendered":"https:\/\/www.agropeter.ro\/blog\/?p=421"},"modified":"2026-07-19T10:06:46","modified_gmt":"2026-07-19T10:06:46","slug":"ghid-electromotoare-si-piese-tractor","status":"publish","type":"post","link":"https:\/\/www.agropeter.ro\/blog\/ghid-electromotoare-si-piese-tractor\/","title":{"rendered":"Ghid Electromotoare \u0219i Piese Electromotor pentru Tractoare"},"content":{"rendered":"<style>\n#agropeter-article-wrapper{\n  --primary:#243746;\n  --accent:#e67e22;\n  --accent-dark:#cf6d17;\n  --bg:#f7f8fa;\n  --surface:#ffffff;\n  --border:#e2e8ee;\n  --text:#2f3640;\n  --green:#25d366;\n  max-width:1200px;\n  margin:0 auto;\n  padding:0;\n  color:var(--text);\n  font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Arial,sans-serif;\n  line-height:1.68;\n  box-sizing:border-box;\n}\n#agropeter-article-wrapper,\n#agropeter-article-wrapper *{\n  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color:#8a949d !important;\n  font-size:.74rem;\n  text-decoration:none !important;\n  font-weight:500;\n}\n#agropeter-article-wrapper .back-anchor-btn:hover{\n  color:var(--accent) !important;\n}<\/p>\n<p>\/* Media *\/\n#agropeter-article-wrapper .media-card{\n  background:#fff;\n  border:1px solid var(--border);\n  border-radius:12px;\n  padding:10px;\n  margin:1rem 0 1.15rem 0;\n  text-align:center;\n}\n#agropeter-article-wrapper .media-card img{\n  display:inline-block;\n  width:100%;\n  max-width:780px;\n  height:auto;\n  border-radius:8px;\n}<\/p>\n<p>\/* Final *\/\n#agropeter-article-wrapper .contact-final{\n  background:linear-gradient(135deg,#fff8f1,#f8fbff);\n  border:1px solid var(--border);\n  border-radius:16px;\n  padding:1.25rem 1.35rem;\n  margin:1.9rem 0 1rem 0;\n}<\/p>\n<p>\/* Responsive *\/\n@media screen and (max-width:991px){\n  #agropeter-article-wrapper .sticky-toc{\n    float:none;\n    width:100%;\n    margin:0 0 1.4rem 0;\n  }\n  #agropeter-article-wrapper .content-area{\n    overflow:visible;\n  }\n  #agropeter-article-wrapper .main-title-h2{\n    font-size:1.42rem;\n  }\n  #agropeter-article-wrapper h3{\n    font-size:1.04rem;\n  }\n  #agropeter-article-wrapper .buy-button{\n    display:block;\n    width:100%;\n    text-align:center;\n    margin:.42rem 0;\n  }\n}\n<\/style>\n<div id=\"agropeter-article-wrapper\">\n  <span id=\"cuprins-top\"><\/span><\/p>\n<div class=\"article-container\">\n<nav class=\"sticky-toc\" id=\"cuprins\" aria-label=\"Cuprins\">\n<h3>Cuprins<\/h3>\n<ul>\n<li><a href=\"#cuprins-top\">Introducere<\/a><\/li>\n<li><a href=\"#cta-top\">Comand\u0103 rapid<\/a><\/li>\n<li><a href=\"#pozitie-sistem\">Unde se afl\u0103 \u00een sistemul electric<\/a><\/li>\n<li><a href=\"#schema-electromotor\">Schema electromotorului (explodat)<\/a><\/li>\n<li><a href=\"#ce-este\">Ce este electromotorul<\/a><\/li>\n<li><a href=\"#tipuri\">Tipuri uzuale + 12V\/14V\/24V<\/a><\/li>\n<li><a href=\"#componente\">Piese, rol \u0219i defecte pe componente<\/a><\/li>\n<li><a href=\"#pinout\">Pinout 30\/85\/86\/87\/87a<\/a><\/li>\n<li><a href=\"#alegere\">Cum alegi corect<\/a><\/li>\n<li><a href=\"#montaj\">M\u0103sur\u0103tori & montaj<\/a><\/li>\n<li><a href=\"#diagnostic\">Diagnostic cu multimetrul + valori<\/a><\/li>\n<li><a href=\"#simptome\">Simptome defect<\/a><\/li>\n<li><a href=\"#incendiu\">Scurtcircuit \u0219i pericol de incendiu<\/a><\/li>\n<li><a href=\"#intretinere\">\u00centre\u021binere<\/a><\/li>\n<li><a href=\"#beneficii\">Beneficii & gre\u0219eli<\/a><\/li>\n<li><a href=\"#produse\">Produse din magazin<\/a><\/li>\n<li><a href=\"#faq\">\u00centreb\u0103ri frecvente<\/a><\/li>\n<li><a href=\"#linkuri\">Linkuri utile<\/a><\/li>\n<li><a href=\"#contact-final\">Contact & navigare<\/a><\/li>\n<\/ul>\n<\/nav>\n<p>    <main class=\"content-area\"><\/p>\n<h2 class=\"main-title-h2\">Ghid Electromotoare \u0219i Piese Electromotor pentru Tractoare \u0219i Utilaje<\/h2>\n<p>Electromotorul (demarorul) este piesa care porne\u0219te motorul diesel prin transformarea energiei din baterie \u00een cuplu mecanic. O alegere gre\u0219it\u0103 sau un montaj cu mas\u0103 slab\u0103 poate duce la porniri grele, uzur\u0103 rapid\u0103 a bendixului, contacte arse \u00een solenoid \u0219i timpi mor\u021bi \u00een sezon.<\/p>\n<p>\u00cen acest ghid g\u0103se\u0219ti informa\u021bii practice: tipuri uzuale (12V\/24V, cu reductor, heavy-duty), schema componentelor interne, piese care se uzeaz\u0103 des, criterii clare de selec\u021bie, verific\u0103ri rapide cu multimetrul, tabelul valorilor corecte \u0219i regulile de siguran\u021b\u0103 la scurtcircuit. Pentru context general po\u021bi consulta \u0219i <a href=\"https:\/\/ro.wikipedia.org\/wiki\/Demaror\" target=\"_blank\" rel=\"nofollow noopener\">pagina \u201eDemaror\u201d (Wikipedia)<\/a>.<\/p>\n<div class=\"note-box\">\n        <strong>Recomandare practic\u0103:<\/strong> pentru identificare rapid\u0103, ajut\u0103 mult s\u0103 ai <strong>marca + model utilaj<\/strong>, <strong>tip motor<\/strong> \u0219i o poz\u0103 cu <strong>electromotorul vechi<\/strong> (flan\u0219\u0103, din\u021bi, eticheta\/cod OE).\n      <\/div>\n<div class=\"media-card\">\n        <img data-src=\"https:\/\/www.agropeter.ro\/blog\/wp-content\/uploads\/2025\/04\/electromotoare-si-piese-electromotor-tractoare-utilaje-agricole-industriale.jpg\" alt=\"Electromotoare \u0219i piese electromotor pentru tractoare \u0219i utilaje agricole\" decoding=\"async\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\">\n      <\/div>\n<section id=\"cta-top\">\n<div class=\"commercial-section\" style=\"text-align:center;\">\n<h3 style=\"border:none;margin-top:0;justify-content:center;\">Electromotoare & piese electromotor \u2013 comand\u0103 online<\/h3>\n<p style=\"margin-top:10px;\">G\u0103se\u0219ti electromotoare, bendix, solenoizi, perii, buc\u0219e\/rulmen\u021bi \u0219i accesorii pentru tractoare \u0219i utilaje. Livrare rapid\u0103 \u0219i suport tehnic la potrivire.<\/p>\n<p>          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Vezi categoria Electromotoare<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/sistem-electric-pentru-tractoare-si-utilaje\/\">\u00cenapoi la Sistem Electric<\/a>\n        <\/div>\n<\/section>\n<section id=\"pozitie-sistem\">\n<h3>Unde se afl\u0103 electromotorul \u00een sistemul electric <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Electromotorul este consumatorul cu cel mai mare curent din tot utilajul \u0219i st\u0103 pe circuitul de putere, direct pe baterie. Traseul pornirii:<\/p>\n<div class=\"cool-flow\" role=\"img\" aria-label=\"Circuitul de pornire: Baterie, Contact cu cheie, Solenoid, Electromotor, Coroana volantului, Motor pornit\">\n          <span class=\"cool-step\">Baterie (+)<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Contact \/ cheie<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Solenoid<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Electromotor<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Coroana volantului<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Motor pornit<\/span>\n        <\/div>\n<p>Iar dup\u0103 pornire, circuitul se inverseaz\u0103 \u2014 alternatorul preia rolul de surs\u0103 \u0219i re\u00eencarc\u0103 bateria consumat\u0103 la pornire:<\/p>\n<div class=\"cool-flow\" role=\"img\" aria-label=\"Circuitul de \u00eenc\u0103rcare: Motor pornit, Alternator, aproximativ 14 vol\u021bi, Baterie re\u00eenc\u0103rcat\u0103\">\n          <span class=\"cool-step\">Motor pornit<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Alternator<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">~14V<\/span><br \/>\n          <span class=\"cool-arrow\">\u2192<\/span><br \/>\n          <span class=\"cool-step\">Baterie re\u00eenc\u0103rcat\u0103<\/span>\n        <\/div>\n<div class=\"note-box\">\n          <strong>Ce \u00eenseamn\u0103 12V \/ 14V \/ 24V:<\/strong> <strong>12V<\/strong> este tensiunea nominal\u0103 a bateriei (12,6V complet \u00eenc\u0103rcat\u0103, m\u0103surat\u0103 \u00een repaus); <strong>~14V<\/strong> (13,8\u201314,4V) este tensiunea de \u00eenc\u0103rcare furnizat\u0103 de alternator cu motorul pornit \u2014 dac\u0103 o vezi la borne, alternatorul lucreaz\u0103 corect; <strong>24V<\/strong> este instala\u021bia tractoarelor \u0219i utilajelor mari, cu dou\u0103 baterii de 12V legate \u00een serie (\u00eenc\u0103rcare la 27,4\u201328,8V). Piesele de 12V \u0219i 24V <strong>nu sunt interschimbabile<\/strong> \u2014 verific\u0103 tensiunea instala\u021biei \u00eenainte de orice comand\u0103.\n        <\/div>\n<\/section>\n<section id=\"schema-electromotor\">\n<h3>Schema electromotorului \u2013 vedere explodat\u0103 <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Schi\u021ba de mai jos arat\u0103 electromotorul demontat, cu principalele componente \u00een ordinea asambl\u0103rii pe ax. Apas\u0103 pe un num\u0103r sau pe linkurile din legend\u0103 pentru detalii:<\/p>\n<div class=\"tractor-map\">\n<div class=\"map-inner\">\n          <svg viewBox=\"0 0 760 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Vedere explodat\u0103 a electromotorului: pinion bendix, carcas\u0103 de antrenare, solenoid, stator, rotor cu colector, perii \u0219i capac cu buc\u0219\u0103\">\n            <!-- axa de asamblare -->\n            <line x1=\"45\" y1=\"225\" x2=\"740\" y2=\"225\" stroke=\"#c6cdd4\" stroke-width=\"2\" stroke-dasharray=\"8 6\"\/>\n<p>            <!-- 2: pinion bendix -->\n            <circle cx=\"100\" cy=\"225\" r=\"30\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <circle cx=\"100\" cy=\"225\" r=\"10\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <line x1=\"100\" y1=\"191\" x2=\"100\" y2=\"181\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"100\" y1=\"259\" x2=\"100\" y2=\"269\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"66\" y1=\"225\" x2=\"56\" y2=\"225\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"124\" y1=\"201\" x2=\"131\" y2=\"194\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"124\" y1=\"249\" x2=\"131\" y2=\"256\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"76\" y1=\"201\" x2=\"69\" y2=\"194\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <line x1=\"76\" y1=\"249\" x2=\"69\" y2=\"256\" stroke=\"#55606b\" stroke-width=\"3\"\/>\n            <!-- manson bendix -->\n            <rect x=\"142\" y=\"207\" width=\"46\" height=\"36\" rx=\"7\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <line x1=\"150\" y1=\"240\" x2=\"166\" y2=\"210\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <line x1=\"162\" y1=\"240\" x2=\"178\" y2=\"210\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n<p>            <!-- carcasa de antrenare (fata) -->\n            <path d=\"M205 182 L300 168 L300 282 L205 268 Z\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <path d=\"M225 225 a18 18 0 0 1 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n<p>            <!-- 1: solenoid deasupra -->\n            <rect x=\"330\" y=\"92\" width=\"160\" height=\"56\" rx=\"16\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <circle cx=\"358\" cy=\"84\" r=\"6\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <circle cx=\"462\" cy=\"84\" r=\"6\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <rect x=\"300\" y=\"108\" width=\"30\" height=\"22\" rx=\"5\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <!-- furca solenoid-bendix -->\n            <line x1=\"300\" y1=\"120\" x2=\"252\" y2=\"205\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n<p>            <!-- 4: stator (corp) -->\n            <rect x=\"312\" y=\"170\" width=\"190\" height=\"110\" rx=\"12\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <path d=\"M335 200 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <path d=\"M335 225 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <path d=\"M335 250 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <path d=\"M440 200 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <path d=\"M440 225 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <path d=\"M440 250 q18 -14 36 0\" fill=\"none\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n            <rect x=\"345\" y=\"280\" width=\"30\" height=\"12\" rx=\"3\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <rect x=\"440\" y=\"280\" width=\"30\" height=\"12\" rx=\"3\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/><\/p>\n<p>            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x2=\"657\" y2=\"244\" stroke=\"#8a949d\" stroke-width=\"2\"\/>\n<p>            <!-- 5: perii pe colector -->\n            <rect x=\"644\" y=\"182\" width=\"18\" height=\"16\" rx=\"3\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <rect x=\"644\" y=\"252\" width=\"18\" height=\"16\" rx=\"3\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <line x1=\"653\" y1=\"182\" x2=\"653\" y2=\"172\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n            <line x1=\"653\" y1=\"268\" x2=\"653\" y2=\"278\" stroke=\"#55606b\" stroke-width=\"2\"\/>\n<p>            <!-- 6: capac spate cu bucsa -->\n            <rect x=\"700\" y=\"193\" width=\"34\" height=\"64\" rx=\"14\" fill=\"#ffffff\" stroke=\"#55606b\" stroke-width=\"2.5\"\/>\n            <circle cx=\"717\" cy=\"225\" r=\"7\" fill=\"#e9edf1\" stroke=\"#55606b\" stroke-width=\"2\"\/><\/p>\n<p>            <!-- linii indicatoare -->\n            <line x1=\"410\" y1=\"66\" x2=\"410\" y2=\"90\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n            <line x1=\"98\" y1=\"152\" x2=\"100\" y2=\"193\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n            <line x1=\"588\" y1=\"146\" x2=\"580\" y2=\"188\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n            <line x1=\"360\" y1=\"322\" x2=\"380\" y2=\"284\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n            <line x1=\"682\" y1=\"322\" x2=\"662\" y2=\"272\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n            <line x1=\"714\" y1=\"140\" x2=\"716\" y2=\"190\" stroke=\"#e67e22\" stroke-width=\"2\" stroke-dasharray=\"4 3\"\/>\n<p>            <!-- puncte marker (numerele sunt in HTML deasupra) -->\n            <circle cx=\"410\" cy=\"52\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n            <circle cx=\"97\" cy=\"137\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n            <circle cx=\"592\" cy=\"130\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n            <circle cx=\"356\" cy=\"338\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n            <circle cx=\"686\" cy=\"338\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n            <circle cx=\"713\" cy=\"124\" r=\"17\" fill=\"#e67e22\" stroke=\"#ffffff\" stroke-width=\"2.5\"\/>\n          <\/svg><br \/>\n          <a class=\"map-pin\" style=\"left:53.9%;top:13%;\" href=\"#componente\" title=\"Solenoid \u2013 comand\u0103 \u0219i contact de putere\">1<\/a><br \/>\n          <a class=\"map-pin\" style=\"left:12.8%;top:34.3%;\" href=\"#componente\" title=\"Bendix (pinion) \u2013 angrenarea cu volantul\">2<\/a><br \/>\n          <a class=\"map-pin\" style=\"left:77.9%;top:32.5%;\" href=\"#componente\" title=\"Rotor \u0219i colector \u2013 genereaz\u0103 cuplul\">3<\/a><br \/>\n          <a class=\"map-pin\" style=\"left:46.8%;top:84.5%;\" href=\"#componente\" title=\"Stator \u2013 carcasa cu \u00eenf\u0103\u0219ur\u0103ri\">4<\/a><br \/>\n          <a class=\"map-pin\" style=\"left:90.3%;top:84.5%;\" href=\"#componente\" title=\"Perii de grafit \u2013 transferul curentului la rotor\">5<\/a><br \/>\n          <a class=\"map-pin\" style=\"left:93.8%;top:31%;\" href=\"#componente\" title=\"Capac spate cu buc\u0219\u0103 \u2013 ghidarea arborelui\">6<\/a>\n          <\/div>\n<\/p><\/div>\n<div class=\"tractor-legend\">\n<p class=\"legend-item\">\n            <span class=\"legend-num\">1<\/span><br \/>\n            <span><strong>Solenoid<\/strong> \u2013 \u00eempinge bendixul \u0219i \u00eenchide contactul de putere<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/comutator-solenoid-01304451.html\">Vezi produs<\/a><\/span><\/span>\n          <\/p>\n<p class=\"legend-item\">\n            <span class=\"legend-num\">2<\/span><br \/>\n            <span><strong>Bendix (pinion)<\/strong> \u2013 angreneaz\u0103 coroana volantului la pornire<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Magazin<\/a><\/span><\/span>\n          <\/p>\n<p class=\"legend-item\">\n            <span class=\"legend-num\">3<\/span><br \/>\n            <span><strong>Rotor + colector<\/strong> \u2013 partea rotativ\u0103 care genereaz\u0103 cuplul<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Magazin<\/a><\/span><\/span>\n          <\/p>\n<p class=\"legend-item\">\n            <span class=\"legend-num\">4<\/span><br \/>\n            <span><strong>Stator<\/strong> \u2013 carcasa cu \u00eenf\u0103\u0219ur\u0103ri\/magne\u021bi, c\u00e2mpul fix<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Magazin<\/a><\/span><\/span>\n          <\/p>\n<p class=\"legend-item\">\n            <span class=\"legend-num\">5<\/span><br \/>\n            <span><strong>Perii de grafit<\/strong> \u2013 transfer\u0103 curentul pe colector<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Magazin<\/a><\/span><\/span>\n          <\/p>\n<p class=\"legend-item\">\n            <span class=\"legend-num\">6<\/span><br \/>\n            <span><strong>Capac + buc\u0219e<\/strong> \u2013 ghideaz\u0103 arborele rotorului<br \/>\n            <span class=\"legend-links\"><a href=\"#componente\">Detalii<\/a> \u00b7 <a href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Magazin<\/a><\/span><\/span>\n          <\/p>\n<\/p><\/div>\n<p style=\"font-size:.86rem;color:#8a949d;margin-top:-.6rem;\">Schem\u0103 orientativ\u0103 \u2014 construc\u021bia exact\u0103 difer\u0103 \u00een func\u021bie de produc\u0103tor \u0219i de tipul electromotorului (clasic sau cu reductor).<\/p>\n<\/section>\n<section id=\"ce-este\">\n<h3>Ce este electromotorul \u0219i cum func\u021bioneaz\u0103 <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Electromotorul porne\u0219te motorul termic prin angrenarea pinionului (bendix) \u00een coroana volantului. La comand\u0103 (cheie\/contact\/ECU), <strong>solenoidul<\/strong> \u00eempinge pinionul \u0219i \u00eenchide circuitul de putere, permi\u021b\u00e2nd trecerea curentului mare c\u0103tre motorul electric al demarorului.<\/p>\n<p>Dup\u0103 ce motorul a pornit, bendixul se decupleaz\u0103 automat, ca s\u0103 nu fie antrenat permanent de volant \u0219i s\u0103 nu se uzeze prematur. La modelele <strong>cu reductor<\/strong>, \u00eentre motorul electric \u0219i pinion exist\u0103 un angrenaj planetar care multiplic\u0103 cuplul \u2014 de aceea un electromotor cu reductor de 2,7 kW poate porni un motor pentru care varianta clasic\u0103 ar avea nevoie de mai mult\u0103 putere.<\/p>\n<\/section>\n<section id=\"tipuri\">\n<h3>Electromotoare: tipuri uzuale <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>\u00cen agricultur\u0103 \u00eent\u00e2lne\u0219ti cel mai des electromotoare <strong>12V<\/strong> \u0219i <strong>24V<\/strong>, \u00een variante clasice sau cu <strong>reductor<\/strong> (gear reduction). Pentru aplica\u021bii grele exist\u0103 modele <strong>heavy-duty<\/strong>, dimensionate pentru porniri dese, praf, vibra\u021bii \u0219i temperaturi sc\u0103zute.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Tip electromotor<\/th>\n<th>Aplica\u021bie<\/th>\n<th>Tensiune<\/th>\n<th>Curent pornire (A)<\/th>\n<th>Putere (kW)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Clasic<\/td>\n<td>Tractoare\/utilaje diesel uzuale<\/td>\n<td>12V \/ 24V<\/td>\n<td>150\u2013350<\/td>\n<td>1.8\u20134.5<\/td>\n<\/tr>\n<tr>\n<td>Cu reductor<\/td>\n<td>Tractoare moderne \/ porniri mai eficiente<\/td>\n<td>12V \/ 24V<\/td>\n<td>120\u2013300<\/td>\n<td>2.2\u20135.0<\/td>\n<\/tr>\n<tr>\n<td>Heavy-duty<\/td>\n<td>Tractoare mari \/ aplica\u021bii grele<\/td>\n<td>24V<\/td>\n<td>250\u2013500<\/td>\n<td>4.0\u20137.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>Exemple concrete din magazin: <a href=\"https:\/\/www.agropeter.ro\/electromotor-142000090700-12v-27-kw.html\">electromotor cu reductor 12V \/ 2,7 kW<\/a> \u0219i <a href=\"https:\/\/www.agropeter.ro\/electromotor-6853810-12v-30-kw.html\">electromotor clasic 12V \/ 3,0 kW<\/a> \u2014 vezi \u0219i sec\u021biunea de produse de la finalul ghidului.<\/p>\n<\/section>\n<section id=\"componente\">\n<h3>Piese electromotor: rol, defecte tipice \u0219i cum le recuno\u0219ti <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Defectele cele mai frecvente apar la consumabile (perii, buc\u0219e\/rulmen\u021bi) \u0219i la componentele de cuplare (bendix\/solenoid). Dac\u0103 problema este \u201eclick dar nu \u00eenv\u00e2rte\u201d, de multe ori cauza este <strong>c\u0103derea de tensiune<\/strong> pe cablaj sau <strong>contactele arse<\/strong> \u00een solenoid. Tabelul de mai jos leag\u0103 fiecare component\u0103 din schema explodat\u0103 de defectul ei tipic \u0219i de simptomul prin care \u00eel recuno\u0219ti:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Pies\u0103 (nr. din schem\u0103)<\/th>\n<th>Rol<\/th>\n<th>Defect tipic<\/th>\n<th>Cum \u00eel recuno\u0219ti<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1. Solenoid (releu electromotor)<\/td>\n<td>Cupleaz\u0103 bendixul + contactul de putere<\/td>\n<td>Contacte arse, bobin\u0103 \u00eentrerupt\u0103<\/td>\n<td>\u201eClick\u201d puternic dar rotorul nu se \u00eenv\u00e2rte; sau niciun click la cheie<\/td>\n<\/tr>\n<tr>\n<td>2. Bendix (pinion)<\/td>\n<td>Angrenarea cu coroana volantului<\/td>\n<td>Din\u021bi uza\u021bi, cuplaj unisens care patineaz\u0103<\/td>\n<td>Zgomot \u201escrijelit\u201d metalic la pornire; electromotorul se \u00eenv\u00e2rte \u00een gol f\u0103r\u0103 s\u0103 antreneze motorul<\/td>\n<\/tr>\n<tr>\n<td>3. Rotor \/ colector<\/td>\n<td>Genereaz\u0103 cuplul de pornire<\/td>\n<td>Arderi pe colector, scurt la mas\u0103, ovalizare<\/td>\n<td>Pornire foarte lent\u0103 cu consum mare, sc\u00e2ntei vizibile, miros de ars<\/td>\n<\/tr>\n<tr>\n<td>4. Stator (\u00eenf\u0103\u0219ur\u0103ri de c\u00e2mp)<\/td>\n<td>C\u00e2mpul magnetic fix<\/td>\n<td>\u00cenf\u0103\u0219urare \u00eentrerupt\u0103 sau \u00een scurt<\/td>\n<td>Rotire slab\u0103 sau deloc, cu solenoidul func\u021bional; carcasa se \u00eenc\u0103lze\u0219te rapid<\/td>\n<\/tr>\n<tr>\n<td>5. Perii de grafit<\/td>\n<td>Transferul curentului la rotor<\/td>\n<td>Uzur\u0103 sub limit\u0103; <strong>perii blocate \u00een portperii<\/strong> (praf de grafit, coroziune)<\/td>\n<td>Pornire intermitent\u0103: uneori merge, alteori nu \u2014 \u201e\u00ee\u0219i revine\u201d dup\u0103 c\u00e2teva \u00eencerc\u0103ri sau dup\u0103 lovituri u\u0219oare \u00een carcas\u0103<\/td>\n<\/tr>\n<tr>\n<td>6. Buc\u0219e \/ rulmen\u021bi \/ capace<\/td>\n<td>Ghidarea arborelui rotorului<\/td>\n<td>Joc radial, gripare, frecare rotor-stator<\/td>\n<td>Zgomot de frecare, pornire lent\u0103 cu \u00eenc\u0103lzire, urme de frecare pe rotor la demontare<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<div class=\"commercial-section\" style=\"text-align:center;\">\n<p style=\"margin:0 0 10px 0;\"><strong>Cau\u021bi piese interne (bendix\/solenoid\/perii)?<\/strong> Te ajut\u0103m la potrivire dup\u0103 poz\u0103 \u0219i cod.<\/p>\n<p>          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Vezi piese electromotor<\/a>\n        <\/div>\n<\/section>\n<section id=\"pinout\">\n<h3>Pinout 30\/85\/86\/87\/87a \u2013 standard releu <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>\u00cen instala\u021biile de pornire \u0219i \u00een circuitele auxiliare, releele standard folosesc numerotarea 30\/85\/86\/87\/87a. Este util\u0103 la diagnostic \u0219i la montaj corect (aten\u021bie la releele cu diod\u0103 \u2013 polaritatea conteaz\u0103).<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Pin<\/th>\n<th>Func\u021bie<\/th>\n<th>Detalii<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>30<\/td>\n<td>Intrare alimentare<\/td>\n<td>+ baterie (prin siguran\u021b\u0103, dac\u0103 exist\u0103)<\/td>\n<\/tr>\n<tr>\n<td>85<\/td>\n<td>Bobin\u0103 (\u2013)<\/td>\n<td>Mas\u0103; respect\u0103 polaritatea dac\u0103 exist\u0103 diod\u0103<\/td>\n<\/tr>\n<tr>\n<td>86<\/td>\n<td>Bobin\u0103 (+)<\/td>\n<td>Semnal de la contact\/ECU<\/td>\n<\/tr>\n<tr>\n<td>87<\/td>\n<td>Ie\u0219ire NO<\/td>\n<td>Alimentare c\u0103tre sarcin\u0103 c\u00e2nd releul e activ<\/td>\n<\/tr>\n<tr>\n<td>87a<\/td>\n<td>Ie\u0219ire NC<\/td>\n<td>Doar la relee cu 5 pini<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<\/section>\n<section id=\"alegere\">\n<h3>Cum alegi corect electromotorul <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Alegerea corect\u0103 \u00eenseamn\u0103 <strong>tensiune corect\u0103<\/strong> (12V sau 24V), <strong>compatibilitate mecanic\u0103<\/strong> (flan\u0219\u0103\/prinderi) \u0219i <strong>pinion compatibil<\/strong> (num\u0103r din\u021bi\/angrenare). Nu schimba 12V cu 24V (sau invers): riscul de avarie este imediat.<\/p>\n<ul>\n<li><strong>Tensiune:<\/strong> 12V sau 24V \u2013 conform instala\u021biei utilajului.<\/li>\n<li><strong>Putere:<\/strong> alege cu rezerv\u0103 pentru porniri la rece \u0219i compresie mare.<\/li>\n<li><strong>Flan\u0219\u0103 & prinderi:<\/strong> num\u0103r\/pozi\u021bie g\u0103uri, distan\u021be, orientare.<\/li>\n<li><strong>Bendix:<\/strong> num\u0103r din\u021bi \u0219i pozi\u021bie pinion.<\/li>\n<li><strong>Mediu:<\/strong> heavy-duty la praf\/umezeal\u0103\/porniri dese.<\/li>\n<\/ul>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Parametru<\/th>\n<th>Interval uzual<\/th>\n<th>Recomandare<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tensiune<\/td>\n<td>12V \/ 24V<\/td>\n<td>conform instala\u021biei<\/td>\n<\/tr>\n<tr>\n<td>Curent pornire<\/td>\n<td>200\u2013600A<\/td>\n<td>baterie bun\u0103 + cablaj corect<\/td>\n<\/tr>\n<tr>\n<td>Aplica\u021bie<\/td>\n<td>u\u0219oar\u0103 \/ medie \/ grea<\/td>\n<td>alege standard \/ reductor \/ heavy-duty<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<\/section>\n<section id=\"montaj\">\n<h3>M\u0103sur\u0103tori, montaj \u0219i compatibilitate <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Un electromotor corect poate porni prost dac\u0103 ai mas\u0103 oxidat\u0103 sau cablu subdimensionat. Montajul \u0219i contactele electrice sunt \u201ejum\u0103tate din repara\u021bie\u201d.<\/p>\n<h4>M\u0103sur\u0103tori utile \u00eenainte de comand\u0103<\/h4>\n<ul>\n<li>distan\u021be \u00eentre g\u0103urile de prindere \u0219i diametrul flan\u0219ei;<\/li>\n<li>num\u0103r din\u021bi bendix + pozi\u021bia pinionului fa\u021b\u0103 de flan\u0219\u0103;<\/li>\n<li>tensiunea sistemului (12V\/24V) \u0219i tipul de conexiuni.<\/li>\n<\/ul>\n<h4>Pa\u0219i scur\u021bi de montaj<\/h4>\n<ul>\n<li>deconecteaz\u0103 bateria; cur\u0103\u021b\u0103 suprafe\u021bele de contact p\u00e2n\u0103 la metal curat;<\/li>\n<li>str\u00e2nge la cuplu corect; verific\u0103 alinierea \u0219i fixarea;<\/li>\n<li>verific\u0103 masa: \u0219urub\/\u0219asiu curat + contact ferm;<\/li>\n<li>dup\u0103 montaj, testeaz\u0103 c\u0103derea de tensiune la pornire.<\/li>\n<\/ul>\n<div class=\"note-box\">\n          <strong>\u021aint\u0103 practic\u0103:<\/strong> dac\u0103 ai c\u0103dere mare de tensiune la pornire, electromotorul va p\u0103rea \u201eslab\u201d chiar dac\u0103 este bun.\n        <\/div>\n<\/section>\n<section id=\"diagnostic\">\n<h3>Diagnostic & testare cu multimetrul \u2013 tabelul valorilor <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>\u00cen multe cazuri, problema nu este electromotorul, ci bateria, cablurile, masele sau solenoidul. Mai jos sunt verific\u0103rile rapide, utile \u00een teren:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Test<\/th>\n<th>Ce urm\u0103re\u0219ti<\/th>\n<th>Concluzie<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u201eClick\u201d la solenoid<\/td>\n<td>cuplare mecanic\u0103 + contact<\/td>\n<td>dac\u0103 nu cupleaz\u0103: comand\u0103\/solenoid<\/td>\n<\/tr>\n<tr>\n<td>C\u0103dere tensiune (+)<\/td>\n<td>baterie \u2192 borna electromotor<\/td>\n<td>mare = cablu\/borne oxidate<\/td>\n<\/tr>\n<tr>\n<td>C\u0103dere tensiune (\u2013)<\/td>\n<td>carcas\u0103 electromotor \u2192 baterie (\u2013)<\/td>\n<td>mare = mas\u0103 slab\u0103<\/td>\n<\/tr>\n<tr>\n<td>Consum anormal \/ \u00eenc\u0103lzire cabluri<\/td>\n<td>izola\u021bie cald\u0103, miros de ars<\/td>\n<td>scurt\/rotor\/lag\u0103r gripat<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>Iar acestea sunt valorile de referin\u021b\u0103 pe care le compari cu m\u0103sur\u0103torile tale \u2014 toate se fac cu multimetrul pe V\u2393 (curent continuu):<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>M\u0103sur\u0103toare<\/th>\n<th>Valoare corect\u0103<\/th>\n<th>Ce \u00eenseamn\u0103 abaterea<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tensiune baterie \u00een repaus (motor oprit)<\/td>\n<td>12,4\u201312,8V (24,8\u201325,6V la 24V)<\/td>\n<td>Sub 12,2V = baterie desc\u0103rcat\u0103; \u00eencarc\u0103 \u00eenainte de orice alt test<\/td>\n<\/tr>\n<tr>\n<td>Tensiune pe baterie \u00een timpul pornirii<\/td>\n<td>nu coboar\u0103 sub ~9,5\u201310V<\/td>\n<td>Sub 9,5V = baterie slab\u0103 sau consum excesiv (rotor\/lag\u0103r)<\/td>\n<\/tr>\n<tr>\n<td>C\u0103dere de tensiune pe circuitul (+), la pornire<\/td>\n<td>sub 0,5V<\/td>\n<td>Peste = cablu subdimensionat sau borne oxidate<\/td>\n<\/tr>\n<tr>\n<td>C\u0103dere de tensiune pe mas\u0103 (\u2013), la pornire<\/td>\n<td>sub 0,3V<\/td>\n<td>Peste = mas\u0103 slab\u0103; cur\u0103\u021b\u0103 punctele de mas\u0103 p\u00e2n\u0103 la metal<\/td>\n<\/tr>\n<tr>\n<td>Tensiune de comand\u0103 la solenoid (borna 50), cu cheia pe start<\/td>\n<td>peste 10V<\/td>\n<td>Sub = problem\u0103 pe circuitul de comand\u0103 (contact, releu, cablaj)<\/td>\n<\/tr>\n<tr>\n<td>Tensiune de \u00eenc\u0103rcare cu motorul pornit<\/td>\n<td>13,8\u201314,4V (27,4\u201328,8V la 24V)<\/td>\n<td>\u00cen afara intervalului = alternator sau regulator defect<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<div class=\"commercial-section\" style=\"text-align:center;\">\n<p style=\"margin:0 0 10px 0;\"><strong>Ai pornire grea \u0219i nu e\u0219ti sigur de cauz\u0103?<\/strong> Putem verifica \u00eempreun\u0103 pa\u0219ii \u0219i potrivirea piesei.<\/p>\n<p>          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/contact.html\">Contact<\/a><br \/>\n          <a class=\"buy-button btn-whatsapp\" href=\"https:\/\/wa.me\/40753429524\" target=\"_blank\" rel=\"noopener noreferrer\">WhatsApp<\/a>\n        <\/div>\n<\/section>\n<section id=\"simptome\">\n<h3>Simptome frecvente ale defectelor <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Simptom<\/th>\n<th>Cauz\u0103 probabil\u0103<\/th>\n<th>Ce faci<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Click, dar nu \u00eenv\u00e2rte<\/td>\n<td>c\u0103dere tensiune \/ contacte solenoid<\/td>\n<td>verific\u0103 borne + mas\u0103 + solenoid<\/td>\n<\/tr>\n<tr>\n<td>Porne\u0219te lent<\/td>\n<td>baterie slab\u0103 \/ cablu subdimensionat \/ perii<\/td>\n<td>test baterie, c\u0103deri tensiune, perii<\/td>\n<\/tr>\n<tr>\n<td>Pornire intermitent\u0103 (\u201ec\u00e2nd vrea, c\u00e2nd nu\u201d)<\/td>\n<td>perii blocate \u00een portperii sau uzate la limit\u0103<\/td>\n<td>verific\u0103 periile \u0219i portperiile; se \u00eenlocuiesc \u00een set<\/td>\n<\/tr>\n<tr>\n<td>Zgomot \u201escrijelit\u201d<\/td>\n<td>din\u021bi bendix\/coroan\u0103 uza\u021bi<\/td>\n<td>verific\u0103 bendix + coroana volantului<\/td>\n<\/tr>\n<tr>\n<td>Se \u00eenv\u00e2rte \u00een gol, f\u0103r\u0103 s\u0103 antreneze motorul<\/td>\n<td>cuplajul unisens al bendixului patineaz\u0103<\/td>\n<td>\u00eenlocuie\u0219te bendixul<\/td>\n<\/tr>\n<tr>\n<td>Se \u00eenc\u0103lze\u0219te tare<\/td>\n<td>lag\u0103r gripat \/ frecare \/ scurt<\/td>\n<td>opre\u0219te, diagnostic \u00eenainte de folosire<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<\/section>\n<section id=\"incendiu\">\n<h3>Scurtcircuitul \u0219i pericolul de incendiu <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Circuitul de putere al electromotorului este special din tot utilajul: cablul gros de la baterie la solenoid este, de regul\u0103, <strong>nesiguran\u021bat<\/strong> \u0219i poate transporta sute de amperi. Un scurtcircuit pe acest traseu \u2014 izola\u021bie roas\u0103 pe \u0219asiu, cheie fix\u0103 uitat\u0103 pe borne, cablu prins sub o pies\u0103 \u2014 nu arde o siguran\u021b\u0103, ci \u00eenc\u0103lze\u0219te cablul la incandescen\u021b\u0103 \u00een c\u00e2teva secunde \u0219i poate <strong>incendia \u00eentregul vehicul<\/strong>, mai ales \u00een mediul agricol plin de praf, paie, motorin\u0103 \u0219i ulei.<\/p>\n<div class=\"warn-box\">\n          <strong>Dac\u0103 apare fum sau foc la instala\u021bia electric\u0103:<\/strong><\/p>\n<ul style=\"margin:.5rem 0 0 1.1rem;\">\n<li>opre\u0219te contactul \u0219i, dac\u0103 e accesibil \u00een siguran\u021b\u0103, <strong>deconecteaz\u0103 borna minus a bateriei<\/strong> \u2014 asta \u00eentrerupe sursa scurtcircuitului;<\/li>\n<li>folose\u0219te un <strong>sting\u0103tor cu pulbere (ABC)<\/strong> sau CO2 \u2014 acestea sunt sigure pe instala\u021bii electrice \u0219i pe motorin\u0103\/ulei;<\/li>\n<li><strong>nu folosi ap\u0103<\/strong> pe motorin\u0103 sau ulei aprins \u2014 \u00eempr\u0103\u0219tie focul;<\/li>\n<li>nu deschide capota larg dac\u0103 focul e dedesubt \u2014 aerul suplimentar \u00eente\u021be\u0219te fl\u0103c\u0103rile; stinge prin fanta \u00eentredeschis\u0103;<\/li>\n<li>dac\u0103 focul nu se stinge imediat, \u00eendep\u0103rteaz\u0103-te \u0219i sun\u0103 la <strong>112<\/strong> \u2014 utilajul se \u00eenlocuie\u0219te, via\u021ba nu.<\/li>\n<\/ul><\/div>\n<p><strong>Preven\u021bia e simpl\u0103:<\/strong> \u021bine un sting\u0103tor ABC \u00een cabin\u0103 (obligatoriu oricum la lucr\u0103rile de recoltare), verific\u0103 anual izola\u021bia cablului gros de pornire pe tot traseul, nu l\u0103sa scule metalice l\u00e2ng\u0103 bornele bateriei, iar la orice interven\u021bie la electromotor deconecteaz\u0103 \u00eent\u00e2i borna minus. Un cablu cu izola\u021bia cr\u0103pat\u0103 se \u00eenlocuie\u0219te, nu se \u201ebandajeaz\u0103\u201d cu izolir pe termen lung.<\/p>\n<\/section>\n<section id=\"intretinere\">\n<h3>\u00centre\u021binere & bune practici <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<ul>\n<li>cur\u0103\u021b\u0103 \u0219i str\u00e2nge conexiunile (plus \u0219i mas\u0103) la revizie;<\/li>\n<li>nu ac\u021biona demarorul peste 10\u201315 sec\/\u00eencercare; las\u0103 pauz\u0103 de 30-60 secunde \u00eentre \u00eencerc\u0103ri \u2014 bobinajele se r\u0103cesc;<\/li>\n<li>verific\u0103 periodic bateria \u0219i \u00eenc\u0103rcarea alternatorului;<\/li>\n<li>dac\u0103 porne\u0219te greu dup\u0103 ploaie\/noroi, verific\u0103 masele \u0219i conectorii;<\/li>\n<li>la fiecare demontare a electromotorului, verific\u0103 vizual \u0219i coroana volantului \u2014 din\u021bii ei uza\u021bi distrug bendixul nou.<\/li>\n<\/ul>\n<\/section>\n<section id=\"beneficii\">\n<h3>Beneficii & gre\u0219eli de evitat <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<h4>Beneficii ale unei alegeri corecte<\/h4>\n<ul>\n<li>pornire rapid\u0103 \u0219i stabil\u0103, inclusiv la rece;<\/li>\n<li>uzur\u0103 mai mic\u0103 la bendix\/solenoid;<\/li>\n<li>timp de sta\u021bionare redus \u00een sezon.<\/li>\n<\/ul>\n<h4>Gre\u0219eli frecvente<\/h4>\n<ul>\n<li>mas\u0103 oxidat\u0103 \u2192 c\u0103dere tensiune, \u201eclick\u201d f\u0103r\u0103 rotire;<\/li>\n<li>\u00eenlocuire bendix f\u0103r\u0103 s\u0103 verifici solenoidul \u0219i periile;<\/li>\n<li>12V pe 24V (sau invers) \u2192 avarie imediat\u0103;<\/li>\n<li>ac\u021bionarea prelungit\u0103 a demarorului \u201ep\u00e2n\u0103 porne\u0219te\u201d \u2192 bobinaje supra\u00eenc\u0103lzite \u0219i perii arse.<\/li>\n<\/ul>\n<\/section>\n<section id=\"produse\">\n<h3>Produse din magazin \u2013 exemple reale <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>C\u00e2teva exemple din stoc, care acoper\u0103 tipurile prezentate \u00een ghid \u2014 gama complet\u0103, pe m\u0103rci \u0219i modele de utilaje, este \u00een categoria de electromotoare:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Produs<\/th>\n<th>Tip<\/th>\n<th>Caracteristici<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.agropeter.ro\/electromotor-142000090700-12v-27-kw.html\">Electromotor 1420-0009-0700<\/a><\/td>\n<td>Cu reductor<\/td>\n<td>12V, 2,7 kW \u2014 cuplu m\u0103rit prin angrenaj, curent de pornire mai mic<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.agropeter.ro\/electromotor-6853810-12v-30-kw.html\">Electromotor 6853810<\/a><\/td>\n<td>Clasic<\/td>\n<td>12V, 3,0 kW \u2014 construc\u021bie direct\u0103, robust\u0103, pentru diesel uzuale<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.agropeter.ro\/comutator-solenoid-01304451.html\">Comutator solenoid 01304451<\/a><\/td>\n<td>Pies\u0103 intern\u0103<\/td>\n<td>Solenoidul (nr. 1 din schem\u0103) \u2014 solu\u021bia economic\u0103 atunci c\u00e2nd electromotorul \u201eclic\u0103ie\u201d din cauza contactelor arse<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<div class=\"commercial-section\" style=\"text-align:center;\">\n          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotor-142000090700-12v-27-kw.html\">Electromotor cu reductor 12V 2,7kW<\/a><br \/>\n          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotor-6853810-12v-30-kw.html\">Electromotor clasic 12V 3,0kW<\/a><br \/>\n          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/comutator-solenoid-01304451.html\">Comutator solenoid<\/a><\/p>\n<p style=\"margin:10px 0 0 0;\">\n            <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Vezi toat\u0103 categoria Electromotoare<\/a>\n          <\/p>\n<\/p><\/div>\n<\/section>\n<section id=\"faq\">\n<div class=\"faq-wrap\">\n<h3 style=\"border:none;margin-top:0;\">\u00centreb\u0103ri frecvente despre electromotoare <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">1) De ce electromotorul \u201eclic\u0103ie\u201d dar nu \u00eenv\u00e2rte?<\/span><\/p>\n<p>De obicei este c\u0103dere de tensiune (borne\/cabluri\/mas\u0103) sau contacte arse \u00een solenoid. \u00cencepe cu m\u0103surarea c\u0103derii de tensiune la pornire, conform tabelului de valori din ghid.<\/p>\n<\/p><\/div>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">2) De ce porne\u0219te doar \u201ec\u00e2nd vrea el\u201d?<\/span><\/p>\n<p>Pornirea intermitent\u0103 este semn\u0103tura clasic\u0103 a periilor blocate \u00een portperii (praf de grafit, coroziune) sau uzate la limit\u0103. Contactul pe colector devine aleatoriu \u2014 uneori se face, alteori nu. Periile se verific\u0103 \u0219i se \u00eenlocuiesc \u00een set, \u00eempreun\u0103 cu cur\u0103\u021barea colectorului.<\/p>\n<\/p><\/div>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">3) Ce \u00eenseamn\u0103 12V, 14V \u0219i 24V?<\/span><\/p>\n<p>12V este tensiunea nominal\u0103 a bateriei (12,6V \u00eenc\u0103rcat\u0103 complet, \u00een repaus); ~14V este tensiunea de \u00eenc\u0103rcare de la alternator cu motorul pornit (13,8\u201314,4V); 24V este instala\u021bia utilajelor mari, cu dou\u0103 baterii \u00een serie. Piesele de 12V \u0219i 24V nu sunt interschimbabile.<\/p>\n<\/p><\/div>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">4) Pot monta un electromotor mai puternic?<\/span><\/p>\n<p>Da, dac\u0103 tensiunea este aceea\u0219i \u0219i prinderile\/bendixul sunt compatibile. Un model cu rezerv\u0103 ajut\u0103 la porniri la rece, dar trebuie s\u0103 fie potrivit mecanic \u2014 iar varianta cu reductor ofer\u0103 cuplu mai mare la curent mai mic.<\/p>\n<\/p><\/div>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">5) Ce date sunt necesare ca s\u0103 identific corect piesa?<\/span><\/p>\n<p>Marca\/model utilaj, tip motor, tensiune (12\/24V), poze cu flan\u0219a \u0219i bendixul, plus cod OE dac\u0103 exist\u0103.<\/p>\n<\/p><\/div>\n<div class=\"faq-item\">\n            <span class=\"faq-q\">6) C\u00e2nd merit\u0103 reparat \u0219i c\u00e2nd merit\u0103 \u00eenlocuit?<\/span><\/p>\n<p>Repara\u021bia e bun\u0103 la perii\/buc\u0219e\/solenoid. \u00cenlocuirea complet\u0103 e recomandat\u0103 dac\u0103 sunt arderi pe rotor\/colector sau uzur\u0103 general\u0103 (mai ales la utilizare intensiv\u0103).<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section id=\"linkuri\">\n<h3>Linkuri utile (interne & externe) <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<div class=\"commercial-section\">\n<p style=\"margin:0 0 10px 0;\"><strong>Pagini utile Agropeter:<\/strong><\/p>\n<p>          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Categorie Electromotoare<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/ghid-de-intretinere-a-alternatoarelor\/\">Ghid Alternatoare<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/bujii-incandescente-si-contact-pornire\/\">Ghid Bujii & Contact<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/relee-pentru-tractoare-si-utilaje-ghid-2025\/\">Ghid Relee<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/iluminare-si-semnalizare-tractoare\/\">Ghid Iluminare<\/a>\n        <\/div>\n<div class=\"note-box\">\n<p style=\"margin:0 0 8px 0;\"><strong>Produc\u0103tori (linkuri externe):<\/strong><\/p>\n<ul style=\"margin:0 0 0 1.1rem;\">\n<li><a href=\"https:\/\/www.bosch.com\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Bosch<\/a><\/li>\n<li><a href=\"https:\/\/www.valeo.com\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Valeo<\/a><\/li>\n<li><a href=\"https:\/\/www.denso.com\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Denso<\/a><\/li>\n<li><a href=\"https:\/\/lucaselectrical.co.uk\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Lucas Electrical<\/a><\/li>\n<\/ul><\/div>\n<\/section>\n<section id=\"contact-final\" class=\"contact-final\">\n<h3>Ai nevoie de ajutor la identificare? <a href=\"#cuprins-top\" class=\"back-anchor-btn\">\u2191 cuprins<\/a><\/h3>\n<p>Trimite modelul utilajului, tipul motorului \u0219i o poz\u0103 cu electromotorul vechi (flan\u0219\u0103 + bendix). \u00ce\u021bi recomand\u0103m rapid varianta compatibil\u0103 \u0219i \u00ee\u021bi spunem ce s\u0103 verifici la montaj ca s\u0103 porneasc\u0103 sigur.<\/p>\n<p>\n          <a class=\"buy-button\" href=\"https:\/\/www.agropeter.ro\/electromotoare-si-piese-electromotor.html\">Vezi Electromotoare<\/a><br \/>\n          <a class=\"buy-button btn-whatsapp\" href=\"https:\/\/wa.me\/40753429524\" target=\"_blank\" rel=\"noopener noreferrer\">Suport WhatsApp<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/contact.html\">Pagina de contact<\/a>\n        <\/p>\n<p style=\"margin-top:.6rem;\">\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/ghid-de-intretinere-a-alternatoarelor\/\">Vezi \u0219i Ghidul de Alternatoare<\/a><br \/>\n          <a class=\"buy-button blog-link-btn\" href=\"https:\/\/www.agropeter.ro\/blog\/sistem-electric-pentru-tractoare-si-utilaje\/\">\u00cenapoi la pagina Sistem Electric<\/a>\n        <\/p>\n<p style=\"font-size:.86rem;color:#666;margin-top:10px;\">Identific\u0103m piesele \u0219i dup\u0103 cod OE sau poze clare.<\/p>\n<\/section>\n<hr style=\"border:0;border-top:1px solid #eee;margin:2rem 0;clear:both;\">\n<p style=\"text-align:center;font-size:.92rem;\"><em>Agropeter 2026 \u2013 electromotoare \u0219i piese pentru pornire sigur\u0103, \u00een exploatare agricol\u0103 \u0219i industrial\u0103.<\/em><\/p>\n<p>      <script type=\"application\/ld+json\">\n      {\n        \"@context\": \"https:\/\/schema.org\",\n        \"@type\": \"FAQPage\",\n        \"mainEntity\": [\n          {\n            \"@type\": \"Question\",\n            \"name\": \"De ce electromotorul clic\u0103ie dar nu \u00eenv\u00e2rte?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Cauzele cele mai frecvente sunt c\u0103derile de tensiune pe cabluri\/borne\/mas\u0103 sau contactele arse \u00een solenoid. Recomandat: m\u0103surarea c\u0103derii de tensiune la pornire \u0219i verificarea masei.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"De ce electromotorul porne\u0219te intermitent?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Pornirea intermitent\u0103 este semn\u0103tura clasic\u0103 a periilor de grafit blocate \u00een portperii sau uzate la limit\u0103: contactul pe colector devine aleatoriu. 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Un model cu rezerv\u0103 ajut\u0103 la porniri la rece, iar varianta cu reductor ofer\u0103 cuplu mai mare la curent mai mic.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"Ce informa\u021bii sunt necesare pentru identificarea corect\u0103 a electromotorului?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Marca \u0219i modelul utilajului, tipul motorului, tensiunea (12\/24V), poze cu flan\u0219a \u0219i bendixul, plus codul OE dac\u0103 este disponibil.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"C\u00e2nd merit\u0103 reparat \u0219i c\u00e2nd merit\u0103 \u00eenlocuit electromotorul?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Repara\u021bia este potrivit\u0103 pentru perii\/buc\u0219e\/solenoid. \u00cenlocuirea complet\u0103 e recomandat\u0103 la uzur\u0103 general\u0103, arderi pe rotor\/colector sau utilizare intensiv\u0103.\"\n            }\n          }\n        ]\n      }\n      <\/script><\/p>\n<p>      <script type=\"application\/ld+json\">\n      {\n        \"@context\":\"https:\/\/schema.org\",\n        \"@type\":\"HowTo\",\n        \"name\":\"Cum diagnostichezi electromotorul pas cu pas\",\n        \"description\":\"Diagnosticarea pornirii grele la tractoare: baterie, c\u0103dere de tensiune pe plus \u0219i pe mas\u0103, comanda solenoidului, perii, bendix \u0219i tensiunea de \u00eenc\u0103rcare.\",\n        \"totalTime\":\"PT15M\",\n        \"step\":[\n          {\"@type\":\"HowToStep\",\"position\":1,\"name\":\"M\u0103soar\u0103 bateria \u00een repaus\",\"text\":\"Cu motorul oprit, tensiunea corect\u0103 este 12,4\u201312,8V. Sub 12,2V, \u00eencarc\u0103 bateria \u00eenainte de orice alt test.\"},\n          {\"@type\":\"HowToStep\",\"position\":2,\"name\":\"Ascult\u0103 solenoidul\",\"text\":\"La cheie pe start: click puternic f\u0103r\u0103 rotire indic\u0103 contacte arse sau c\u0103dere de tensiune; niciun click indic\u0103 circuitul de comand\u0103.\"},\n          {\"@type\":\"HowToStep\",\"position\":3,\"name\":\"M\u0103soar\u0103 tensiunea la pornire\",\"text\":\"Pe bornele bateriei, \u00een timpul ac\u021bion\u0103rii: nu trebuie s\u0103 coboare sub 9,5\u201310V. Sub aceast\u0103 valoare, bateria e slab\u0103 sau consumul e excesiv.\"},\n          {\"@type\":\"HowToStep\",\"position\":4,\"name\":\"M\u0103soar\u0103 c\u0103derea pe circuitul plus\",\"text\":\"\u00centre borna plus a bateriei \u0219i borna electromotorului, la pornire: sub 0,5V este corect. Peste, cur\u0103\u021b\u0103 bornele sau \u00eenlocuie\u0219te cablul.\"},\n          {\"@type\":\"HowToStep\",\"position\":5,\"name\":\"M\u0103soar\u0103 c\u0103derea pe mas\u0103\",\"text\":\"\u00centre carcasa electromotorului \u0219i borna minus, la pornire: sub 0,3V este corect. Peste, cur\u0103\u021b\u0103 punctele de mas\u0103 p\u00e2n\u0103 la metal curat.\"},\n          {\"@type\":\"HowToStep\",\"position\":6,\"name\":\"Verific\u0103 comanda solenoidului\",\"text\":\"Pe borna de comand\u0103 (50), cu cheia pe start, trebuie s\u0103 ajung\u0103 peste 10V. Sub, problema e la contact, releu sau cablaj.\"},\n          {\"@type\":\"HowToStep\",\"position\":7,\"name\":\"Evalueaz\u0103 comportamentul\",\"text\":\"Pornire intermitent\u0103 = perii blocate; rotire \u00een gol = bendix; zgomot metalic = din\u021bi bendix\/coroan\u0103; \u00eenc\u0103lzire rapid\u0103 = lag\u0103re sau scurt.\"},\n          {\"@type\":\"HowToStep\",\"position\":8,\"name\":\"Verific\u0103 \u00eenc\u0103rcarea dup\u0103 pornire\",\"text\":\"Cu motorul pornit, tensiunea la baterie trebuie s\u0103 fie 13,8\u201314,4V. \u00cen afara intervalului, verific\u0103 alternatorul \u0219i regulatorul.\"}\n        ]\n      }\n      <\/script><\/p>\n<p>    <\/main>\n  <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Cuprins Introducere Comand\u0103 rapid Unde se afl\u0103 \u00een sistemul electric Schema electromotorului (explodat) Ce este electromotorul Tipuri uzuale + 12V\/14V\/24V Piese, rol \u0219i defecte pe componente Pinout 30\/85\/86\/87\/87a Cum alegi corect M\u0103sur\u0103tori &#038; montaj Diagnostic &hellip; <\/p>\n","protected":false},"author":1,"featured_media":423,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[216,111,110,112],"class_list":["post-421","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sistem-electric-tractoare-utilaje","tag-ghid-de-informare-electromotoare-si-piese-electromotor-pentru-tractoare-si-utilaje-agricole","tag-intretinere-electromotor","tag-piese-electromotor-utilaje-agricole","tag-releu-bendix-electromotor"],"_links":{"self":[{"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/posts\/421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/comments?post=421"}],"version-history":[{"count":20,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/posts\/421\/revisions"}],"predecessor-version":[{"id":1908,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/posts\/421\/revisions\/1908"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/media\/423"}],"wp:attachment":[{"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/media?parent=421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/categories?post=421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.agropeter.ro\/blog\/wp-json\/wp\/v2\/tags?post=421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}