IDEAL ARMATURE HQ SERIES [GKS190] [NEW TYPE] CIRCULAR SAW SPARE PART [GENERIC] [Bosch Type] - 26609

Engineered to Perform. Built to Last. The Professional's Choice for Circular Saw Armature Replacement. The IDEAL Armature HQ Series for the GKS190 Circular Saw is a high-performance, heavy-duty replacement armature engineered to restore your Bosch-type circular saw to full operational power. Built with 100% pure copper windings, a precision multi-segment commutator, and a resin-reinforced structure, this generic spare part delivers industrial-grade durability and reliable electrical-to-mechanical energy conversion, making it the ideal choice for power tool repair, maintenance, and workshop upkeep. Key Features Perfect For 100% Copper Windings for maximum conductivity Precision Multi-Segment Commutator for smooth current transfer Resin-Coated & Laced Windings for centrifugal force resistance Heavy-Duty Engineering built to outlast standard replacements Industrial Longevity with extended service intervals Repairing GKS190 Bosch-type Circular Saws Workshop & Trade professionals needing fast turnaround Power tool repair technicians and service centres Restoring worn or burnt-out armatures 100% Pure Copper Windings for Superior Electrical Performance: Unlike armatures wound with aluminium or low-grade alloys, this HQ Series armature uses high-purity copper wire throughout its winding process. Copper's superior electrical conductivity ensures minimal energy loss during operation, while its excellent thermal resistance prevents overheating during prolonged, heavy-duty cutting cycles — extending the life of both the armature and the motor assembly. Precision Multi-Segment Copper Commutator for Reduced Sparking & Wear: The armature is fitted with a multi-segment copper commutator machined to tight tolerances. This design ensures smooth, consistent current transfer from the carbon brushes to the rotor windings, significantly reducing electrical arcing, brush sparking, and commutator wear — resulting in a quieter, more efficient motor and a longer service life for both the armature and the carbon brushes. Resin-Coated & Laced Winding Structure for Mechanical Durability: The copper windings are laced and fully impregnated with high-grade insulating resin. This process locks the windings firmly in place within the armature slots, providing exceptional resistance to the high centrifugal forces generated at professional motor speeds. The resin coating also acts as a moisture and contamination barrier, protecting the windings from dust, debris, and humidity common in workshop environments. Bosch GKS190-Type Compatibility for Direct Replacement: Designed as a direct-fit generic replacement for the GKS190 circular saw motor, this armature matches the original shaft dimensions, core length, commutator diameter, and winding specifications of the OEM part. This ensures a straightforward installation without the need for modifications, making it suitable for both professional repair technicians and experienced DIY users. Heavy-Duty Construction for Extended Service Intervals: The IDEAL HQ Series armature is built with an emphasis on industrial longevity. The magnetic core is constructed from high-grade laminated steel to minimise eddy current losses and heat build-up, while the overall assembly is balanced for vibration-free, smooth rotation. This armature is supplied as a single unit (1 piece) and is packaged to prevent transit damage, arriving ready for immediate installation. Each order includes one (1) HQ Series Armature, supplied as a complete, ready-to-install unit. This product is manufactured under strict quality control standards to ensure consistent performance and dimensional accuracy across every unit, giving repair professionals the confidence of a reliable, repeatable result on every job. General Purchase & Comparison Queries Is this a genuine Bosch armature or a generic replacement? This is a high-quality generic (aftermarket) replacement armature, not an OEM Bosch part. It is engineered to the same dimensional and electrical specifications as the original GKS190 armature, ensuring a direct-fit installation without modifications. The IDEAL HQ Series uses 100% copper windings and a precision commutator, offering comparable — and in many cases superior — durability to standard OEM replacements, at a significantly more accessible price point. Which circular saw models is this armature compatible with? This armature is specifically designed for the Bosch GKS190-type circular saw. It is a direct replacement matching the original shaft diameter, core length, commutator dimensions, and winding configuration of the GKS190 motor. If you are unsure whether your saw model is compatible, we recommend comparing your existing armature's physical dimensions or contacting us with your tool's model number before purchasing. Why should I choose the IDEAL HQ Series over a cheaper alternative? The IDEAL HQ Series is built to a higher standard than budget-grade armatures. Key differentiators include 100% pure copper windings (not aluminium or mixed alloys), a resin-impregnated and laced winding structure that resists centrifugal forces and moisture, and a precision-machined multi-segment commutator that minimises sparking and brush wear. These features translate directly into a longer service life, more consistent motor performance, and fewer repeat repairs — making it the cost-effective choice for professionals and serious users. Product-Specific and Usage Queries What does an armature do in a circular saw? The armature is the rotating core of the electric motor inside your circular saw. It is responsible for converting electrical energy into mechanical (rotational) energy, which ultimately drives the saw blade. 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 field magnets, causing the armature — and the attached shaft — to spin. A worn or damaged armature will result in loss of power, excessive sparking, overheating, or complete motor failure. How do I know if my circular saw's armature needs replacing? Common signs that your GKS190 armature needs replacement include: significant loss of cutting power under load, excessive sparking visible through the brush inspection ports, a burning smell during or after use, the motor running roughly or with unusual vibration, or the tool failing to start despite the carbon brushes being in good condition. If you have already replaced the carbon brushes and the issue persists, the armature is the most likely cause and should be inspected or replaced. Does this armature come ready to install, and what tools are needed? Yes, the IDEAL HQ Series Armature is supplied as a complete, ready-to-install unit — no additional winding, balancing, or preparation is required. Installation typically requires standard screwdrivers, a spanner set, and a bearing puller/press if the bearings need to be transferred from the old armature. The process involves disassembling the saw's motor housing, removing the old armature, transferring any bearings or gears as needed, and fitting the new armature. We recommend this task be carried out by a qualified power tool repair technician if you are not experienced with motor disassembly. Problem/Solution-Oriented Queries My circular saw is sparking heavily — will replacing the armature fix this? Heavy sparking in a circular saw is most commonly caused by one of three issues: worn carbon brushes, a damaged or dirty commutator, or a faulty armature. We recommend first inspecting and replacing the carbon brushes, as these are a consumable item. If sparking continues after fitting new brushes, the commutator surface may be worn, pitted, or have open/short-circuited winding segments — all of which are signs of armature failure. Replacing the armature with the IDEAL HQ Series unit, which features a precision multi-segment copper commutator, will resolve sparking caused by armature-related faults. My saw has lost power and runs slowly under load — is the armature the cause? Loss of power and slow running under load can be caused by several factors, including a worn armature, failing field coil, worn carbon brushes, or a mechanical obstruction. To diagnose, first check and replace the carbon brushes if they are worn below the minimum length. If the problem persists, test the armature windings for continuity and shorts using a multimeter or growler tester. Shorted or open windings will cause exactly this symptom. Fitting a new IDEAL HQ Series Armature with its high-purity copper windings will restore full motor torque and cutting performance. The saw overheats quickly during use — can a new armature help? Rapid overheating during use is often a symptom of increased electrical resistance within the armature windings, caused by degraded insulation, partial winding shorts, or the use of low-conductivity winding materials in a previous replacement. The IDEAL HQ Series Armature's 100% pure copper windings have significantly lower resistance than aluminium or mixed-alloy alternatives, generating less heat during operation. Additionally, the resin-impregnated winding structure provides superior insulation integrity, preventing the inter-winding shorts that cause localised hot spots. Replacing a degraded armature with this HQ Series unit should substantially reduce operating temperatures.