Bosch GWS Rotor Armature 1604010A90 for Angle Grinders 230V 2000-2600W

When your angle grinder loses power, sparks excessively, or stops running altogether, a worn rotor is often the culprit. This genuine Bosch rotor (part number 1604010A90) restores full performance to compatible GWS series grinders, eliminating the need for a costly new tool. Engineered to exact OEM specifications, it ensures reliable operation and long service life.

Who is it for

Professional tradespeople and serious DIYers who rely on their Bosch angle grinders for cutting, grinding, and polishing. If your GWS 20-230, 22-230, 24-230, or 26-230 (including 180mm versions) has a faulty armature, this replacement part brings it back to life.

Main features

• Genuine Bosch OEM rotor for perfect fit and function
• Compatible with 230V angle grinders rated 2000W–2600W
• Durable copper windings and steel shaft for high torque and heat resistance
• Precision-machined commutator and 7-tooth pinion gear for smooth power delivery
• Integrated cooling fan to prevent overheating during extended use
• Direct replacement for original part – no modifications required

Specifications

• Part type: Rotor / Armature
• Application: Angle grinder
• Compatible with: Bosch GWS 20-230, GWS 22-230, GWS 24-230, GWS 26-230, and similar 180mm models
• Voltage: 230V
• Power range: 2000W – 2600W
• Overall length: 205 mm
• Armature body diameter: 55 mm
• Cooling fan diameter: 78 mm
• Commutator diameter: 37 mm
• Pinion gear teeth: 7
• Front bearing seat diameter: 12 mm
• Rear bearing seat diameter: 8 mm
• Material: Copper windings, steel shaft
• OEM status: Genuine

Tips

Professional installation is recommended. Always disconnect the grinder from power before servicing. Inspect bearings and carbon brushes for wear and replace if necessary to ensure optimal performance and longevity of the new rotor.