Power Tool Accessories: Carbon Brush Holder (N109433, N384037, N187232, N268145) for DW DCD735, DCD730C2, DCD735C2, DCD785

These are carbon brush holder accessories designed for multiple DeWalt cordless drills, including models DCD735, DCD730C2, DCD735C2, and DCD785. The specific part numbers are N109433, N384037, N187232, and N268145 (different numbers may correspond to the same specification with minor variations or different production batches).

Key Details:

1. Product Type: Carbon Brush Holder
   A structural component in the drill’s motor, primarily responsible for securing the position of carbon brushes. It ensures stable contact between the brushes and the motor commutator, while some models include built-in springs to apply continuous pressure on the brushes—compensating for wear and guaranteeing smooth current conduction.

2. Compatibility: DeWalt DCD Series Cordless Drills

   These models are mainstream cordless tools from DeWalt, and the carbon brush holder must fully match the motor specifications of the tools to ensure compatibility.

• DCD730C2, DCD735, DCD735C2: DeWalt 12V/18V compact cordless drills, commonly used for light drilling and screw-driving tasks.

• DCD785: A high-performance DeWalt cordless drill, suitable for medium to heavy industrial applications.

3. Part Numbers: N109433, N384037, N187232, N268145
   Official identifiers for this carbon brush holder by DeWalt. They may vary due to production years, regions, or minor design adjustments, but their core dimensions and functions remain consistent, making them all compatible with the aforementioned drill models.

4. Functions and Replacement Needs:

• Protects brushes and the motor: Prevents carbon brushes from shifting due to vibration and reduces contamination of internal motor components by wear-generated dust.

• Replacement is required when the original holder is cracked, deformed, or has broken springs—issues that cause poor brush contact. Symptoms include reduced drill power, abnormal motor noise, or excessive sparking. Replacing with the corresponding part restores tool performance.

In summary, this is a dedicated carbon brush holder accessory for DeWalt DCD735 and other series cordless drills, playing a crucial role in ensuring stable motor operation and extending the tool’s service life.