ID HQ SERIES ARMATURE [GWS24-230] ANGLE GRINDER SPARE PART [Bosch Type] - 26677

This is a high-quality generic (aftermarket) replacement armature, not an original Bosch OEM part. It is engineered to the same dimensional and performance specifications as the original, making it a direct-fit replacement for the Bosch GWS24-230 angle grinder. Generic armatures from the HQ Series are a cost-effective alternative that restores your tool to full working condition without the premium price of an OEM spare part.

100% pure copper windings offer significantly lower electrical resistance compared to aluminium or copper-clad alternatives. This means less energy is lost as heat, the motor runs cooler under sustained load, and the armature lasts considerably longer. For a high-demand tool like the GWS24-230 used in heavy grinding or cutting, this translates directly into fewer breakdowns, longer service intervals, and better overall tool performance.

Yes. This armature is specifically designed as a Bosch GWS24-230 compatible replacement (Part No. 26677, Bosch Type). The shaft dimensions, core stack length, and commutator diameter are matched to the original specifications of the GWS24-230 motor housing. Always verify your grinder's model number before purchasing to ensure compatibility.

The armature is the rotating core of the electric motor inside your angle grinder. It consists of a laminated magnetic core, copper windings, and a commutator. When electrical current passes through the windings, it creates a magnetic field that interacts with the stator magnets, causing the armature — and therefore the grinder's disc — to spin. A damaged or burnt armature is one of the most common reasons an angle grinder loses power, runs roughly, or stops working entirely.

Common signs of a failed or failing armature include: the grinder not starting at all, significant loss of power under load, excessive sparking visible through the brush vents, a burning smell during operation, or the motor running but the disc not spinning. If your carbon brushes are in good condition but the tool still underperforms, the armature is the most likely cause and should be inspected or replaced.

Armature replacement on the GWS24-230 requires disassembly of the motor housing, removal of the carbon brushes, and careful extraction of the old armature from the field coil/stator. While an experienced DIY user with the right tools can perform this repair, it is generally recommended to have the replacement carried out by a qualified power tool repair technician to ensure correct reassembly, proper brush seating, and safe operation after the repair.

Heavy sparking is often caused by a worn or damaged commutator surface, which is an integral part of the armature. When the commutator segments become uneven, pitted, or contaminated, the carbon brushes cannot maintain smooth contact, resulting in excessive arcing. Replacing the armature with the HQ Series unit — which features a precision multi-segment copper commutator — will restore smooth brush contact and eliminate abnormal sparking, provided the carbon brushes themselves are also in acceptable condition.

Yes. A partially shorted or open-circuit armature winding is a very common cause of an angle grinder running weakly or stalling under load. When individual winding coils are damaged — typically due to overheating from prolonged heavy use — the motor cannot generate its full torque output. Replacing the armature with the HQ Series unit with 100% copper windings and resin-reinforced construction will restore the motor's full power output and torque capacity.

To maximise the service life of your replacement armature: avoid running the grinder continuously at full load for extended periods without allowing the motor to cool; replace carbon brushes before they wear down to the minimum length, as worn brushes cause increased arcing and commutator damage; keep the tool's ventilation slots clear of dust and debris to maintain adequate airflow; and avoid forcing the disc into a cut, which places excessive current draw on the armature windings. Regular maintenance and correct operating technique are the most effective ways to protect your investment.