ID HQ SERIES ARMATURE [GA7020] 9" ANGLE GRINDER SPARE PART [Makita Type] - 29007
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OEM-Grade Precision — Restore Your GA7020 to Full Power
The ID HQ Series Armature for the GA7020 9" Angle Grinder (SKU: 29007) is a precision-engineered Makita-type replacement armature designed to restore full power and performance to your angle grinder. Featuring a high-grade magnetic core, precision-wound copper coils, and a machined commutator, this armature delivers reliable electrical-to-mechanical energy conversion, the core function that drives your tool's shaft rotation. Built to OEM-equivalent standards and CE-certified, it is the trusted choice for professional repair technicians and workshop maintenance teams.
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- Exact-fit Makita GA7020 compatibility: This armature is engineered as a direct drop-in replacement for the Makita GA7020 9" angle grinder, eliminating the need for modifications or adapters. The shaft dimensions, core stack length, and commutator diameter are matched to OEM specifications, ensuring a seamless installation that restores the tool to its original operating condition.
- High-efficiency magnetic core construction: The armature features a laminated silicon-steel magnetic core that minimises eddy current losses and heat build-up during operation. This design ensures maximum electrical-to-mechanical energy conversion efficiency, allowing the grinder to maintain consistent torque output even under sustained heavy-duty loads.
- Precision copper windings for thermal stability: The copper winding coils are wound to tight tolerances with high-temperature insulation varnish applied to each layer. This protects against winding failure caused by overheating — one of the most common causes of armature burnout in professional-grade angle grinders used in metalworking and construction environments.
- Machined commutator for reliable brush contact: The precision-turned commutator provides a smooth, concentric contact surface for the carbon brushes, reducing arcing, brush wear, and electrical noise. A well-machined commutator is critical for maintaining stable RPM and preventing premature brush failure, extending the overall service life of the repaired tool.
- CE-certified to international machine safety standards: This replacement armature carries CE (Machine Test) certification, confirming it has been tested and verified to meet European machinery safety directives. For workshops, service centres, and professional tradespeople, this certification provides assurance of quality, electrical safety, and compliance — particularly important when tools are used in regulated work environments.
- Cost-effective professional repair solution: At a fraction of the cost of a new angle grinder, replacing a failed armature with this ID HQ Series spare part (SKU: 29007) is the most economical path to restoring a GA7020 to full working order. With 40 units available for immediate dispatch, it is well-suited for service centres managing multiple tool repairs simultaneously.
This armature is supplied as a single unit (1 Pcs) and is CE (Machine Test) certified, confirming compliance with international machinery safety standards. It is sold as a spare part only and does not include the full angle grinder assembly.
General Purchase & Comparison Queries
Is this armature compatible with my Makita GA7020 angle grinder?
Yes. This ID HQ Series Armature (SKU: 29007) is specifically engineered as a Makita-type replacement for the GA7020 9" angle grinder. It is a direct drop-in spare part with matching shaft dimensions, core stack length, and commutator diameter. Always verify your model number before ordering to ensure compatibility.
How does the ID HQ Series armature compare to an original Makita armature?
The ID HQ Series armature is manufactured to OEM-equivalent specifications, using a high-grade laminated magnetic core, precision copper windings, and a machined commutator — the same key components found in original armatures. It carries CE (Machine Test) certification, confirming it meets international machinery safety standards. It offers a cost-effective alternative without compromising on fit, function, or safety compliance.
Is it more economical to replace the armature or buy a new angle grinder?
In most cases, replacing the armature is significantly more economical than purchasing a new angle grinder. The armature is one of the most common failure points in angle grinders, and a quality replacement like the ID HQ Series (SKU: 29007) restores the tool to full working condition at a fraction of the cost of a new unit — making it the preferred choice for professional repair technicians and cost-conscious workshops.
Product-Specific and Usage Queries
What is an armature and what role does it play in an angle grinder?
The armature is the rotating component inside the motor of an angle grinder. It is responsible for converting electrical energy into mechanical energy — the rotational force that drives the grinding disc. It consists of three main elements: a laminated magnetic core, copper windings, and a commutator. When the armature fails, the tool loses power, runs erratically, or stops functioning entirely.
What is included in the package and what certifications does this armature carry?
Each order includes one (1) armature unit ready for installation. The product is CE (Machine Test) certified, meaning it has been independently tested and verified to comply with European machinery safety directives — providing assurance of electrical safety and build quality for professional use.
Can this armature be installed without specialist tools?
Armature replacement on an angle grinder requires basic power tool repair knowledge and standard workshop tools including screwdrivers, snap ring pliers, and a bearing puller in some cases. While an experienced technician can complete the job efficiently, it is recommended that those unfamiliar with motor disassembly have the repair carried out by a qualified service technician to avoid damage to surrounding components.
Problem/Solution-Oriented Queries
My GA7020 angle grinder has lost power and sparks excessively — is the armature the cause?
Excessive sparking and power loss are classic symptoms of a failing or burnt armature. When the copper windings short-circuit or the commutator surface becomes worn or pitted, brush contact becomes inconsistent, causing arcing and reduced motor output. Replacing the armature with the ID HQ Series unit (SKU: 29007) will typically resolve these issues and restore the grinder to full performance.
The grinder runs but overheats quickly — could the armature be faulty?
Yes. A partially shorted armature winding can cause the motor to draw excessive current, generating abnormal heat even under light loads. If your GA7020 overheats rapidly, smells of burning insulation, or trips circuit breakers, the armature is a likely culprit. Installing a new ID HQ Series armature with fresh high-temperature insulated windings will restore normal thermal performance and protect the tool from further damage.
I replaced the carbon brushes but the grinder still doesn't work — what should I check next?
If new carbon brushes did not resolve the issue, the armature itself is the next component to inspect. A damaged commutator, shorted windings, or a cracked core will prevent the motor from running correctly regardless of brush condition. Use a multimeter to check for continuity and resistance across the commutator segments. If readings are inconsistent or show a short, replacing the armature with the ID HQ Series unit (SKU: 29007) is the recommended next step.
Armature (1 Pcs)