Products Description
Copper Carbon Block for Making Carbon Brush is a highly conductive, high-density composite carbon-based material designed specifically for manufacturing high-performance carbon brushes, which are widely used in motors, power tools, and industrial transmission systems.
Products Description
Excellent electrical conductivity: Utilizing a scientifically proportioned blend of high-purity electrolytic copper powder and premium graphite, a continuous conductive network is formed through high-temperature sintering, resulting in a stable volume resistivity of ≤15 μΩ·m.
High-density structure: Isostatic pressing and multi-segment sintering processes ensure uniform material density and low porosity.
Stable coefficient of friction: Precise control of the copper-carbon ratio maintains a stable coefficient of friction within a reasonable range, reducing electrical sparks and arcing.
Products Applications
1. Electrical Machinery and Equipment Industry:
DC Motor Carbon Brushes
AC Commutating Motor Carbon Brushes
Industrial Drive Motor Carbon Brushes
2. Automotive and Transportation Equipment:
Automotive Starter Motor Carbon Brushes
Generator Carbon Brushes
Power Tool Motor Carbon Brushes
3. Industrial Equipment and Automation:
Fan and Pump Carbon Brushes
Conveying Equipment Motor Carbon Brushes
Industrial Control Equipment Carbon Brushes
4. Home Appliances and Small Appliances:
Small Motor Carbon Brushes for Washing Machines, Drills, Mixers, etc.

Product Customization
Copper Content Ratio (Affects Conductivity and Hardness)
Volume Resistivity Range
Density and Hardness Grade
Dimensions (Square / Strip / Customer Drawing)
Sintering Process Parameters (Adaptable to Different Carbon Brush Formulas)
Surface Finish (Rough Finish / Fine Finish)
FAQ
Q: Can the main component ratio of the copper-carbon block be adjusted?
A: Yes. The copper content and carbon material ratio can be adjusted according to target conductivity and wear requirements to adapt to different carbon brush applications.
Q: What are the key quality indicators of the product?
A: The main control indicators include volume resistivity, density, hardness, porosity, and compositional uniformity, all of which are tested during the production process.
Q: How do you ensure batch stability?
A: We use a fixed raw material supply system and standardized process parameters, and record and compare key performance indicators batch by batch.
Q: Do you support customization based on samples or drawings?
A: Yes. We can adjust the formula and process according to customer samples or technical parameters and provide sample confirmation.
Q: What is the minimum order quantity (MOQ)?
A: The MOQ for standard specifications is low. Custom specifications are determined based on size and formula complexity, suitable for wholesale and long-term cooperative customers.
Q: How long is the delivery time?
A: Standard specifications are usually shipped within 7-15 days. The specific delivery time for customized products depends on the process complexity.
Q: How are the products packaged and transported?
A: Utilizing moisture-proof and impact-resistant industrial packaging, suitable for sea and long-distance transportation, ensuring stable delivery condition.
Q: Do you provide long-term supply and technical support?
A: We support long-term stable supply and can assist customers with carbon brush material selection and performance optimization.
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