1 years
China
Carbon Motor Brush for Electric/Electrical/Electronic Tools Parts – 4.8×10.8×15/15.8 MM Replacement
This is a motor carbon brush, belonging to the category of accessories for electric, electrical, and electronic tools. With dimensions of 4.8×10.8×15 mm or 4.8×10.8×15.8 mm, it is primarily used as a replacement part and serves as a critical consumable component in various small and medium-sized brushed motor devices.
Key Information Analysis:
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Product Type: Carbon Motor Brush
Made by pressing a mixture of high-purity graphite and a small amount of conductive metals (such as copper or silver), it offers excellent electrical conductivity, wear resistance, and high-temperature resistance. Through close contact with the motor commutator, it enables efficient current conduction from the stator to the rotor, driving the tool's motor to operate stably. -
Compatibility Range:
Thanks to its slender dimensions of 4.8×10.8×15 mm/15.8 mm, this brush is designed for miniaturized motor devices. Common applications include:- Electric Tools: Micro drills, precision sanders, small engraving machines, etc.
- Electrical Tools: Portable testers, small cable strippers' drive motors.
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Electronic Tools: Laboratory stirrers, precision grinding tools' micro-motors.
Compatibility hinges on an exact match with the motor's brush holder dimensions (especially a length tolerance of ≤0.8 mm). Always measure the original brush precisely before replacement.
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Size Specifications: 4.8×10.8×15/15.8 MM
These dimensions highlight the product's slender profile (width of only 4.8 mm), tailored for small motors. A manufacturing error of ≤0.2 mm is critical; deviations can cause poor contact, leading to abnormal sparks, operational stalling, or even motor burnout. Note the two length options (15 mm vs. 15.8 mm) to avoid confusion. -
Functions and Benefits:
- Current Conduction: As the "core conductor" for micro-motors, it ensures precise startup and stable operation of low-power devices.
- Wear Reduction: Leveraging graphite's self-lubricating properties, it minimizes wear on miniature commutators (which are more susceptible to friction damage), extending the lifespan of precision tools.
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Replacement Indicators:
Replace the carbon brush when the device exhibits:- Excessive Wear: When worn down to ≤1/2 of the original length (approx. 7-8 mm; stricter threshold for small brushes).
- Abnormal Noise: High-frequency rattling during operation or intermittent shutdowns.
- Visible Sparks: Obvious sparks at the brush holder or reduced output precision in precision tools.
In summary, this 4.8×10.8×15/15.8 mm carbon brush is specifically engineered for electric, electrical, and electronic precision tools. It is an essential spare part for maintaining the efficient and precise operation of miniaturized motors.