{"product_id":"id-hq-series-coil-9557nb-4-5-angle-grinder-spare-part-30127","title":"ID HQ SERIES COIL [9557NB] [4.5\"] ANGLE GRINDER SPARE PART - 30127","description":"\u003ch2\u003eRestore Full Power — The Right Part, The Right Fit, The First Time\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eID HQ Series Coil [9557NB]\u003c\/strong\u003e is a precision-engineered \u003cstrong\u003eangle grinder spare part\u003c\/strong\u003e designed as a direct replacement for the 4.5\" HQ Series angle grinder. Built with \u003cstrong\u003ehigh-grade copper wire windings\u003c\/strong\u003e, advanced insulation, and a robust magnetic core, this \u003cstrong\u003efield coil\u003c\/strong\u003e efficiently converts electrical energy into mechanical energy to restore full power output to your tool. Engineered for \u003cstrong\u003ehigh-temperature resistance\u003c\/strong\u003e and long-term durability, it is the trusted choice for professional tradespeople and workshop technicians who demand reliable power tool repair solutions.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 24px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 40%; text-align: left; padding: 10px 12px; background-color: #000000; font-size: 1em; color: #ffffff;\"\u003eKey Features\u003c\/th\u003e\n\u003cth style=\"width: 40%; text-align: left; padding: 10px 12px; background-color: #000000; font-size: 1em; color: #ffffff;\"\u003ePerfect For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; vertical-align: top; text-align: left; padding: 12px; border: 1px solid #e9e9e9;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 18px;\"\u003e\n\u003cli\u003eOEM-compatible replacement coil for \u003cstrong\u003eID HQ Series 9557NB\u003c\/strong\u003e 4.5\" angle grinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-grade copper wire windings\u003c\/strong\u003e for maximum conductivity and minimal heat loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature resistant insulation\u003c\/strong\u003e ensures stable performance under continuous heavy-duty use\u003c\/li\u003e\n\u003cli\u003ePrecision-wound \u003cstrong\u003emagnetic core\u003c\/strong\u003e for efficient electromagnetic energy conversion\u003c\/li\u003e\n\u003cli\u003eManufactured to exact \u003cstrong\u003eOEM specifications\u003c\/strong\u003e — Part No. 30127 — for direct drop-in installation\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 #e9e9e9;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 18px;\"\u003e\n\u003cli\u003eRepairing a \u003cstrong\u003eburnt-out or failed coil\u003c\/strong\u003e in an ID HQ 9557NB angle grinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkshop technicians and electricians\u003c\/strong\u003e servicing power tools professionally\u003c\/li\u003e\n\u003cli\u003eRestoring full RPM and \u003cstrong\u003emotor power output\u003c\/strong\u003e after coil degradation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventive maintenance\u003c\/strong\u003e replacement in high-usage commercial environments\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\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM Replacement — Part No. 30127:\u003c\/strong\u003e Engineered specifically for the ID HQ Series 9557NB 4.5\" angle grinder, this coil matches original factory tolerances exactly, eliminating the guesswork of cross-compatibility and ensuring a precise, secure fit with no modification required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Copper Wire Windings for Maximum Efficiency:\u003c\/strong\u003e The coil is wound with \u003cstrong\u003ehigh-conductivity copper wire\u003c\/strong\u003e that minimises resistive losses, ensuring the maximum amount of electrical energy is converted into rotational mechanical force — delivering the full rated RPM your grinder was designed to achieve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Resistant Insulation System:\u003c\/strong\u003e Each winding layer is coated with \u003cstrong\u003ethermally stable insulation\u003c\/strong\u003e rated for the elevated operating temperatures of sustained grinding, cutting, and surface-preparation work, preventing coil failure due to thermal breakdown — a common cause of motor burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Magnetic Core for Optimal Electromagnetic Performance:\u003c\/strong\u003e The laminated \u003cstrong\u003esilicon-steel magnetic core\u003c\/strong\u003e is precision-stamped to reduce eddy current losses, improving the electromagnetic efficiency of the coil assembly and maintaining consistent torque output even under variable load conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine ID Brand Quality — Engineered for Longevity:\u003c\/strong\u003e This spare part is manufactured under the same quality standards as the original component, meaning the repaired tool will perform at its rated specifications. It is packaged as a standalone replacement coil, accompanied by the product warranty documentation, making it ready for immediate workshop installation.\u003c\/li\u003e\n\u003c\/ul\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 ID HQ Series angle grinder?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThis coil — \u003cstrong\u003ePart No. 30127\u003c\/strong\u003e — is specifically designed and manufactured as a direct OEM replacement for the \u003cstrong\u003eID HQ Series 9557NB 4.5\" angle grinder\u003c\/strong\u003e. If your grinder carries the model designation 9557NB and uses a 4.5\" disc, this is the correct replacement coil. We recommend verifying the part number on your existing coil or referring to your grinder's service manual before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eIs this a genuine ID brand spare part or an aftermarket component?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThis is a \u003cstrong\u003egenuine ID brand spare part\u003c\/strong\u003e, manufactured to the same specifications as the original component that ships with the HQ Series 9557NB angle grinder. Genuine parts ensure dimensional accuracy, correct winding resistance, and insulation integrity — factors that directly affect tool performance and safety. Aftermarket coils may not meet these standards and can reduce motor efficiency or shorten tool lifespan.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eHow does replacing the coil compare to buying a new angle grinder?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eReplacing the \u003cstrong\u003efield coil\u003c\/strong\u003e is a highly cost-effective alternative to purchasing a new tool. A failed coil is one of the most common repairable faults in an angle grinder — the housing, gearbox, disc guard, and switch are typically undamaged. By installing a new \u003cstrong\u003eID HQ Series coil (Part No. 30127)\u003c\/strong\u003e, you restore the grinder to its full rated performance at a fraction of the cost of a new unit, making it the smarter choice for professional workshops and budget-conscious tradespeople alike.\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 does the coil do inside an angle grinder?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eThe \u003cstrong\u003efield coil\u003c\/strong\u003e (also called the stator coil) is a core component of the angle grinder's electric motor. It consists of \u003cstrong\u003ecopper wire windings\u003c\/strong\u003e wound around a laminated magnetic core, which generates a rotating electromagnetic field when energised. This field interacts with the armature (rotor) to produce the rotational force that spins the grinding disc. Without a functioning coil, the motor cannot generate sufficient torque and the tool will either run poorly or fail to start entirely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eCan I install this coil myself, or does it require a professional technician?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eCoil replacement on an angle grinder is a moderate-level repair task. It requires disassembling the motor housing, removing the old coil, fitting the new \u003cstrong\u003eID HQ Series coil (Part No. 30127)\u003c\/strong\u003e, and reassembling the unit. While experienced DIYers or workshop technicians with basic electrical knowledge can perform this repair, we recommend the task be carried out by a \u003cstrong\u003equalified power tool service technician\u003c\/strong\u003e to ensure correct installation, safe reassembly, and to preserve any remaining tool warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eWhat are the signs that my angle grinder coil needs to be replaced?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eCommon indicators of a failing or failed \u003cstrong\u003efield coil\u003c\/strong\u003e include: the grinder not starting despite the switch and power supply being functional; a significant loss of power or RPM under load; excessive heat emanating from the motor body during use; a burning smell during or after operation; or visible scorch marks and discolouration on the coil windings when the motor housing is opened. If you notice any of these symptoms, the coil should be tested and replaced promptly to prevent damage to other motor components such as the armature or brushes.\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 lost power and runs slowly — can a new coil fix this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eA degraded or partially failed \u003cstrong\u003efield coil\u003c\/strong\u003e is a common cause of reduced power and slow RPM in an angle grinder. When the copper windings develop short circuits between layers or the insulation breaks down, the coil can no longer generate a full-strength electromagnetic field, leading to a weaker motor output. Replacing the coil with a new \u003cstrong\u003eID HQ Series coil (Part No. 30127)\u003c\/strong\u003e restores the correct electromagnetic characteristics of the motor, bringing the grinder back to its full rated power and speed — provided the armature and brushes are also in serviceable condition.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eMy grinder smells like burning — is the coil the problem?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eA \u003cstrong\u003eburning smell\u003c\/strong\u003e from an angle grinder is a serious warning sign that typically indicates the motor's insulation is overheating or has already failed. The field coil's insulation is designed to withstand high operating temperatures, but prolonged overloading, blocked ventilation, or extended continuous use can cause it to break down. Stop using the tool immediately and inspect the coil visually for scorch marks or discolouration. If the coil insulation has failed, it must be replaced — continued operation risks a complete motor burnout or an electrical fault. The \u003cstrong\u003eID HQ Series coil (Part No. 30127)\u003c\/strong\u003e is the correct replacement for the 9557NB model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan class=\"question-title\"\u003eWill fitting a new coil fix my grinder if it is completely dead and won't turn on?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer-content\"\u003e\n\u003cp\u003eA completely non-starting angle grinder can be caused by several faults, and a failed \u003cstrong\u003efield coil\u003c\/strong\u003e is one possibility. Before replacing the coil, it is advisable to rule out other common causes such as a faulty power switch, worn-out carbon brushes, or a broken power cable — these are often simpler and less expensive to address first. If the switch, brushes, and cable test as functional and the coil shows an open circuit or significantly incorrect winding resistance when tested with a multimeter, then replacing the coil with \u003cstrong\u003ePart No. 30127\u003c\/strong\u003e should restore normal operation to your ID HQ Series 9557NB grinder.\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":49792103612631,"sku":"30127","price":11.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/1962\/5687\/files\/IDHQSERIESCOIL_9557NB_4.5INCH_ANGLEGRINDERSPAREPART-30127.jpg?v=1789480582","url":"https:\/\/www.idealpowertools.com\/products\/id-hq-series-coil-9557nb-4-5-angle-grinder-spare-part-30127","provider":"Ideal Power Tools","version":"1.0","type":"link"}