I. Overview of Basic Information

• Product Code: 10080078

• Core Attribute: A carbon brush specifically designed for power tools, serving as a wear-and-tear replacement component for motor current conduction.

• Dimensions:
  Thickness 6.3mm × Width 7.1mm × Length 16/19mm (Note: "16/19mm" indicates a possible length range for compatibility with different models).

II. Application Scenarios and Compatible Tools

• Scope of Application:
  Suitable for various power tools driven by DC/AC commutator motors, including drills, angle grinders, rotary hammers, and polishers.

• Brand and Model References:

• Commonly used in small to medium-sized tools from brands such as Bosch, DeWALT, and Makita (e.g., Bosch TSB1300 drill, Makita 9553NB angle grinder).

• Verify dimensions and spring pressure compatibility with the original brush before replacement.

III. Technical Parameters and Working Principle

1. Material Characteristics:

• Typically made of electrographite or copper-graphite composite, with conductivity reaching 10⁻⁵Ω·m and wear coefficient <0.15mm/100 hours.

2. Current Conduction Mechanism:

• Maintains sliding contact with the motor commutator via spring pressure to transmit current to the rotor windings, enabling tool operation (e.g., angle grinders at 12,000 RPM).

3. Replacement Threshold:

• Replace immediately when the remaining length is less than 1/3 of the original, or when excessive sparking or power loss occurs to prevent commutator damage.

IV. Installation and Maintenance Guidelines

• Installation Steps:

1. Power off and remove the tool's rear cover. Extract the old brush and spring.

2. Clean the commutator surface with alcohol to remove carbon dust and ensure no oil contamination.

3. Ensure the new brush fits the commutator arc (adjust curvature with sandpaper if necessary), maintaining spring pressure at 1.5–2kg.

• Maintenance Recommendations:

• Inspect wear every 50–80 hours of use. Replace both the brush and spring as a set for optimal pressure matching.

V. Comparison with Similar Products

VI. Purchase and Replacement Recommendations

• Specification Verification:

• Beyond dimensions, confirm current-carrying capacity (typically 10–15A) and compatible voltage (12V/220V).