Makita Genuine 513339-7 Armature Assembly 240v 9404, 9903, 9920 Belt Sander

The Makita 513339-7 Armature Assembly is a genuine OEM replacement rotor for 240V Makita belt sanders, designed to restore full motor performance in worn or damaged tools.

Constructed with high-grade copper windings, stacked steel laminations and a precision-ground steel shaft, this armature delivers efficient energy transfer and stable rotation under load. The quality commutator ensures smooth brush contact and reduces sparking during operation, helping to protect surrounding motor components.

This assembly is a direct-fit replacement for the Makita 9404, 9903 and 9920 belt sanders — models widely used by joiners, carpenters and contractors on site and in the workshop. Fitting genuine Makita part no. 513339-7 helps return your sander to factory performance, addressing common issues such as overheating from shorted windings and inconsistent belt speed.

As an OEM part manufactured to tight tolerances, installation is straightforward and reliable. For best results, fitting this armature alongside fresh brushes and serviceable bearings will extend the working life of the tool and maintain consistent sanding quality over time.

Features and Benefits:
• Genuine Makita OEM part — assured fit and reliability
• Rated for 240V tools on UK and EU mains supplies
• Direct-fit compatibility with Makita 9404, 9903 and 9920 belt sanders
• Copper windings and robust steel core for durability and motor efficiency
• Precision-balanced rotor helps reduce vibration and noise during use
• Quality commutator for smooth brush contact and reduced sparking
• Restores correct speed, torque and sanding consistency
• Manufactured to tight tolerances for straightforward installation
• Ideal replacement for burnt, scored or mechanically damaged armatures
• Supports longer tool life when paired with healthy brushes and bearings

Specifications:
Voltage: 240V
Part Number: 513339-7
Compatible Models: Makita 9404, 9903, 9920