ID HQ SERIES ARMATURE [ID HD2-26SRE | GBH2-26] [7 TEETH] DEMOLITION HAMMER SPARE PART [Bosch Type] - 29009
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Engineered for Power, Built for Reliability — The HQ Series Armature That Keeps Your Hammer Running
The ID HQ Series Armature is a precision-engineered demolition hammer spare part designed as a direct Bosch GBH2-26 compatible replacement. Featuring a 7-teeth commutator configuration and HQ-grade magnetic core winding, this armature for HD2-26SRE restores full mechanical output by efficiently converting electrical energy to rotational force, keeping your power tool running at peak performance.
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- HQ Series armature construction: The ID HQ Series designation reflects a higher-grade manufacturing standard, with tighter winding tolerances and a more robust magnetic core compared to standard replacement armatures. This translates directly into longer operational lifespan and reduced heat build-up during heavy-duty demolition work.
- 7-teeth commutator design: The 7-segment commutator ensures even current distribution across the winding, reducing electrical arcing and brush wear. This design is critical for maintaining consistent torque output in high-vibration demolition hammer applications.
- Direct compatibility with Bosch GBH2-26 and HD2-26SRE: Engineered as a Bosch-type replacement armature (Part No. 29009), this component is dimensionally matched to fit the GBH2-26 and HD2-26SRE housings without modification — ensuring a precise, secure fit and immediate restoration of full tool performance.
- Efficient electrical-to-mechanical energy conversion: The armature's high-conductivity copper winding and optimised magnetic core geometry minimise resistive losses, delivering maximum rotational force to the tool shaft. This is especially important in SDS-plus demolition hammers where sustained impact energy depends on consistent motor output.
- CE-certified quality assurance: This armature carries CE certification (Machine Test), confirming it meets European safety and performance standards. It is supplied as a single unit (1 Pcs) and is ready for immediate installation by a qualified technician, making it a reliable choice for both professional repair workshops and on-site maintenance teams.
This armature is supplied as a single unit (1 Pcs) and carries CE certification (Machine Test), confirming compliance with European machinery safety and performance directives — giving you confidence in both the quality and regulatory standing of the replacement part.
General Purchase & Comparison Queries
Is this armature a genuine Bosch part or an aftermarket replacement?
This is an aftermarket HQ Series replacement armature designed to be compatible with Bosch GBH2-26 and HD2-26SRE demolition hammers. It is not a genuine OEM Bosch part, but it is manufactured to HQ (High Quality) standards with CE certification (Machine Test), offering a cost-effective and reliable alternative for professional repairs and maintenance.
Which Bosch models is this armature compatible with?
This armature (Part No. 29009) is specifically engineered for the Bosch GBH2-26 and HD2-26SRE rotary/demolition hammer models. It features a 7-teeth commutator configuration that matches the original motor specification of these tools. Always verify your model number before ordering to ensure correct fitment.
Why choose an HQ Series armature over a standard replacement?
The HQ Series designation indicates a higher manufacturing grade — tighter winding tolerances, a more robust magnetic core, and better-quality commutator segments compared to standard aftermarket armatures. This results in lower heat generation, reduced brush wear, and a longer service life, making it the preferred choice for professional workshops and tradespeople who rely on their tools daily.
Product-Specific and Usage Queries
What does the 7-teeth commutator mean and why does it matter?
The 7-teeth (7-segment) commutator refers to the number of copper segments on the commutator ring that make contact with the carbon brushes. More segments mean smoother current distribution, less electrical arcing, and more consistent torque delivery. For a demolition hammer operating under high vibration and load, this translates to more reliable performance and longer brush life.
Does this armature require any modification for installation?
No modifications are required. This armature is a direct drop-in replacement dimensionally matched to the Bosch GBH2-26 and HD2-26SRE housings. However, installation should be carried out by a qualified power tool technician, as it involves disassembling the motor housing, removing the old armature, and reassembling with correct torque settings to ensure safe operation.
What is included in the package?
The package includes one (1) HQ Series Armature (Part No. 29009), supplied ready for installation. No additional components such as brushes, bearings, or hardware are included. If your tool requires a full motor service, we recommend inspecting and replacing the carbon brushes and field coil at the same time for optimal results.
Problem/Solution-Oriented Queries
My Bosch GBH2-26 has lost power and runs roughly — could the armature be the cause?
Yes, a worn or damaged armature is one of the most common causes of power loss, rough running, and excessive sparking in rotary and demolition hammers. Signs of armature failure include reduced impact energy, overheating, burning smell, or visible sparking at the brush area. Replacing the armature with this HQ Series unit will restore full motor output if the armature is confirmed as the faulty component.
How do I know if I need to replace the armature or the field coil?
Both components can cause similar symptoms. A simple test is to use a multimeter to check winding resistance: the armature should show low, even resistance between adjacent commutator segments with no open or short circuits. The field coil should show consistent resistance across its terminals. Burnt windings, visible damage, or out-of-spec resistance readings indicate which part needs replacement. When in doubt, consult a qualified technician for a proper diagnosis.
Will replacing the armature fix excessive vibration in my demolition hammer?
Excessive vibration in a demolition hammer is more commonly caused by worn mechanical components such as the piston, striker, or anti-vibration system rather than the armature itself. However, if the armature is out of balance due to winding damage or commutator wear, it can contribute to abnormal vibration at the motor. Replacing a damaged armature with this precision-balanced HQ Series unit will eliminate motor-related vibration, though other mechanical components should also be inspected.
Armature (1 Pcs)