{"product_id":"id-hq-series-coil-id-agh125b-g15sa2-5-angle-grinder-spare-part-makita-type-30131","title":"ID HQ SERIES COIL [ID AGH125B] [G15SA2] [5\"] ANGLE GRINDER SPARE PART [Makita Type] - 30131","description":"\u003ch2\u003eRestore Full Power — Precision-Wound for Maximum Motor Efficiency\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eID HQ Series Field Coil [ID AGH125B] [G15SA2]\u003c\/strong\u003e is a premium-grade \u003cstrong\u003e5\" angle grinder spare part\u003c\/strong\u003e engineered as a direct replacement for \u003cstrong\u003eMakita-type angle grinders\u003c\/strong\u003e. Crafted with precision \u003cstrong\u003ecopper wire windings\u003c\/strong\u003e, high-grade insulation, and a robust \u003cstrong\u003emagnetic core\u003c\/strong\u003e, this \u003cstrong\u003efield coil\u003c\/strong\u003e delivers reliable \u003cstrong\u003eelectromagnetic energy conversion\u003c\/strong\u003e to restore your tool's full power output. Part number \u003cstrong\u003e30131\u003c\/strong\u003e ensures a verified OEM-compatible fit for fast, confident repairs.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 24px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 40%; text-align: left; padding: 10px 12px; background-color: #000000; font-size: 1em; font-weight: bold; color: #ffffff; border: 1px solid #e0e0e0;\"\u003eKey Features\u003c\/th\u003e\n\u003cth style=\"width: 40%; text-align: left; padding: 10px 12px; background-color: #000000; font-size: 1em; font-weight: bold; color: #ffffff; border: 1px solid #e0e0e0;\"\u003ePerfect For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; vertical-align: top; text-align: left; padding: 12px; border: 1px solid #e0e0e0;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; line-height: 1.8;\"\u003e\n\u003cli\u003eDirect replacement for \u003cstrong\u003eMakita-type 5\" angle grinders\u003c\/strong\u003e (model AGH125B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature resistant\u003c\/strong\u003e insulation for sustained heavy-duty use\u003c\/li\u003e\n\u003cli\u003ePrecision \u003cstrong\u003ecopper wire windings\u003c\/strong\u003e for efficient electromagnetic energy transfer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHQ Series quality\u003c\/strong\u003e construction with durable magnetic core for long service life\u003c\/li\u003e\n\u003cli\u003ePart No. \u003cstrong\u003e30131\u003c\/strong\u003e — verified OEM-compatible specification [G15SA2]\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 40%; vertical-align: top; text-align: left; padding: 12px; border: 1px solid #e0e0e0;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; line-height: 1.8;\"\u003e\n\u003cli\u003eRepairing a \u003cstrong\u003eburnt-out or failed field coil\u003c\/strong\u003e in a 5\" angle grinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkshop and site technicians\u003c\/strong\u003e servicing Makita-compatible tools\u003c\/li\u003e\n\u003cli\u003ePower tool repair shops stocking \u003cstrong\u003eOEM-compatible spare parts\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePreventive maintenance to avoid \u003cstrong\u003emotor failure\u003c\/strong\u003e downtime\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cul style=\"line-height: 1.9; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Compatible Design for Makita AGH125B:\u003c\/strong\u003e Engineered to the exact dimensional and electrical specifications of the Makita-type AGH125B 5\" angle grinder, this field coil slots in without modification, eliminating guesswork and reducing repair time significantly in workshop environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper Wire Windings for Superior Conductivity:\u003c\/strong\u003e The coil is wound with high-purity \u003cstrong\u003ecopper wire\u003c\/strong\u003e, chosen for its low electrical resistance and excellent thermal conductivity. This ensures minimal energy loss during operation, translating to consistent torque output and cooler running temperatures under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Resistant Insulation:\u003c\/strong\u003e The winding insulation is rated for the elevated temperatures generated during prolonged grinding sessions. This \u003cstrong\u003eheat-resistant coating\u003c\/strong\u003e prevents insulation breakdown — one of the most common causes of coil failure in angle grinders used for cutting, grinding, and surface preparation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Magnetic Core for Stable Electromagnetic Field:\u003c\/strong\u003e The laminated \u003cstrong\u003emagnetic core\u003c\/strong\u003e is designed to minimise eddy current losses while maintaining a strong, stable electromagnetic field. This directly contributes to efficient \u003cstrong\u003emechanical energy conversion\u003c\/strong\u003e, keeping RPM consistent even under variable load conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHQ Series Build Quality — Part No. 30131 [G15SA2]:\u003c\/strong\u003e Part of the ID \u003cstrong\u003eHQ (High Quality) Series\u003c\/strong\u003e, this coil undergoes stricter manufacturing tolerances compared to standard aftermarket parts. The G15SA2 specification code and part number 30131 make sourcing, cross-referencing, and warranty tracking straightforward for trade buyers and repair professionals alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 16px;\"\u003eThis field coil is supplied as a \u003cstrong\u003esingle replacement coil unit\u003c\/strong\u003e (Part No. 30131) ready for installation. It carries the \u003cstrong\u003eID HQ Series\u003c\/strong\u003e quality designation, which reflects compliance with elevated manufacturing standards for aftermarket power tool components — making it a dependable choice for professional repair technicians and service centres working with Makita-compatible 5\" angle grinders.\u003c\/p\u003e\n\u003c!-- CSS Styles for the FAQ Section --\u003e\n\u003cstyle\u003e\n.faq-section-styled {\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n  margin-top: 40px;\n}\n.faq-section-styled h2 {\n  font-size: 2em;\n  font-weight: 700;\n  color: #1C2228;\n  border-bottom: 2px solid #F4F4F4;\n  padding-bottom: 15px;\n  margin-bottom: 30px;\n}\n.faq-section-styled details {\n  background-color: #f9f9f9;\n  border: 1px solid #e9e9e9;\n  border-radius: 8px;\n  margin-bottom: 15px;\n  overflow: hidden;\n}\n.faq-section-styled summary {\n  display: flex;\n  justify-content: space-between;\n  align-items: center;\n  padding: 20px;\n  font-weight: 600;\n  font-size: 1.1em;\n  color: #1C2228;\n  cursor: pointer;\n  list-style: none;\n}\n.faq-section-styled summary::-webkit-details-marker {\n  display: none;\n}\n.faq-section-styled .question-title {\n  display: flex;\n  align-items: center;\n}\n.faq-section-styled .question-title::before {\n  content: '\\25B6';\n  margin-right: 15px;\n  font-size: 0.8em;\n  color: #1C2228;\n}\n.faq-section-styled summary::after {\n  content: '+';\n  font-size: 1.8em;\n  font-weight: 300;\n  color: #1C2228;\n  transition: transform 0.2s ease-in-out;\n}\n.faq-section-styled details[open] summary::after {\n  transform: rotate(45deg);\n}\n.faq-section-styled .faq-answer-content {\n  background-color: #FFFFFF;\n  padding: 20px 20px 20px 55px;\n  border-top: 1px solid #e9e9e9;\n}\n.faq-section-styled .faq-answer-content p {\n  margin: 0;\n  font-size: 1em;\n  line-height: 1.7;\n  color: #2E2E2E;\n  text-align: left;\n}\n.faq-section-styled .faq-answer-content p strong {\n    color: #1C2228;\n}\n\u003c\/style\u003e\n\u003cdiv class=\"faq-section-styled\"\u003e\n\u003ch2\u003eGeneral Purchase \u0026amp; Comparison Queries\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eIs this coil compatible with my Makita angle grinder?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThis \u003cstrong\u003eID HQ Series Field Coil (Part No. 30131)\u003c\/strong\u003e is specifically designed as a \u003cstrong\u003eMakita-type compatible spare part\u003c\/strong\u003e for the \u003cstrong\u003eAGH125B 5\" angle grinder\u003c\/strong\u003e model, referenced under specification code \u003cstrong\u003eG15SA2\u003c\/strong\u003e. We recommend cross-referencing your grinder's model number and original part number before ordering to confirm fitment. If you are unsure, please contact us with your tool's model details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eHow does the ID HQ Series coil compare to the original OEM part?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eID HQ (High Quality) Series\u003c\/strong\u003e is manufactured to elevated aftermarket standards, using \u003cstrong\u003ehigh-purity copper wire windings\u003c\/strong\u003e, \u003cstrong\u003eheat-resistant insulation\u003c\/strong\u003e, and a precision \u003cstrong\u003elaminated magnetic core\u003c\/strong\u003e. While it is an aftermarket replacement rather than a Makita-branded part, the HQ Series designation reflects stricter tolerances than standard aftermarket alternatives, offering a reliable, cost-effective solution for professional repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eCan I use this coil for other angle grinder brands or models?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThis field coil is engineered specifically for \u003cstrong\u003eMakita-type AGH125B 5\" angle grinders\u003c\/strong\u003e. Whilst some third-party grinders share similar architectures, we strongly advise against fitting this coil into models it was not designed for. Incorrect installation can result in \u003cstrong\u003emotor failure, overheating, or safety hazards\u003c\/strong\u003e. Always verify the part number \u003cstrong\u003e30131\u003c\/strong\u003e and specification code \u003cstrong\u003eG15SA2\u003c\/strong\u003e match your tool's requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003ch2\u003eProduct-Specific and Usage Queries\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eWhat causes a field coil to fail in an angle grinder?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eField coil failure in angle grinders is most commonly caused by \u003cstrong\u003eoverheating due to sustained heavy loads\u003c\/strong\u003e, insulation breakdown from prolonged use, voltage spikes, or physical damage from impact. Symptoms include the tool running intermittently, producing a burning smell, losing power, or failing to start. Replacing the \u003cstrong\u003efield coil (Part No. 30131)\u003c\/strong\u003e with this HQ Series unit restores the grinder's electromagnetic function and full power output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eDo I need any special tools to install this field coil?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eInstallation requires basic power tool disassembly skills and standard workshop tools including \u003cstrong\u003escrewdrivers, spanner sets, and a coil puller\u003c\/strong\u003e where applicable. It is recommended that this replacement be carried out by a \u003cstrong\u003equalified power tool technician\u003c\/strong\u003e or experienced repair professional to ensure correct fitment, proper winding orientation, and safe reassembly. Always disconnect the tool from the power supply before beginning any repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eWhat is the role of the magnetic core in this field coil?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThe \u003cstrong\u003elaminated magnetic core\u003c\/strong\u003e within this field coil serves to concentrate and direct the electromagnetic field generated by the \u003cstrong\u003ecopper wire windings\u003c\/strong\u003e. By minimising eddy current losses, the core ensures efficient \u003cstrong\u003econversion of electrical energy into mechanical energy\u003c\/strong\u003e, maintaining consistent rotor speed (RPM) and torque output. This is critical for stable performance during demanding cutting and grinding applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003ch2\u003eProblem\/Solution-Oriented Queries\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eMy angle grinder has stopped working — could the field coil be the problem?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eA \u003cstrong\u003efailed field coil\u003c\/strong\u003e is one of the most common causes of a complete angle grinder failure. If your \u003cstrong\u003eMakita AGH125B\u003c\/strong\u003e has stopped running, runs erratically, produces a burning odour, or shows signs of overheating, the field coil should be among the first components inspected. A multimeter test across the coil terminals can identify an open circuit or a short to ground. Replacing the coil with this \u003cstrong\u003eID HQ Series Part No. 30131\u003c\/strong\u003e is a cost-effective repair compared to replacing the entire tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eThe grinder runs but lacks power — can a worn coil cause this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eYes. A \u003cstrong\u003epartially degraded field coil\u003c\/strong\u003e with damaged insulation or weakened windings can still allow the tool to run but with significantly reduced power and torque. This often manifests as the grinder bogging down under light loads, running hotter than usual, or taking longer to reach operating speed. Installing a fresh \u003cstrong\u003eHQ Series field coil (Part No. 30131)\u003c\/strong\u003e restores the full \u003cstrong\u003eelectromagnetic field strength\u003c\/strong\u003e, bringing the motor back to its rated performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eHow do I avoid premature coil failure after replacement?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eTo maximise the service life of your new \u003cstrong\u003eID HQ Series field coil\u003c\/strong\u003e, avoid sustained operation at maximum load for extended periods without allowing the tool to cool. Ensure the grinder's \u003cstrong\u003eventilation slots are kept clear\u003c\/strong\u003e of dust and debris to maintain adequate airflow around the motor. Use the correct \u003cstrong\u003edisc size and type\u003c\/strong\u003e specified for the AGH125B model, and avoid stalling the motor under excessive pressure. Regular inspection of brushes and the armature will also help detect issues before they cause secondary coil damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Ideal Power Tools","offers":[{"title":"Default Title","offer_id":49792104399063,"sku":"30131","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/1962\/5687\/files\/IDHQSERIESCOIL_IDAGH125B_G15SA2_5INCH_ANGLEGRINDERSPAREPART_MakitaType_-30131.jpg?v=1789480786","url":"https:\/\/www.idealpowertools.com\/products\/id-hq-series-coil-id-agh125b-g15sa2-5-angle-grinder-spare-part-makita-type-30131","provider":"Ideal Power Tools","version":"1.0","type":"link"}