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Motor Carbon Brush

Simo Motor Carbon Brush

The Simo Motor Carbon Brush is a critical electrical component for DC motors and certain AC motors, designed to enable smooth commutation and stable current transmission. Manufactured from high-conductivity materials with wear-resistant formulations, the carbon brush ensures excellent contact with the commutator or slip ring under high-speed rotation and heavy-load conditions, achieving stable commutation while reducing sparking and brush wear.

Suitable for various Simo DC motors, synchronous motors, and industrial motor systems, the carbon brush is heat-resistant, wear-resistant, and long-lasting. Its precise structure allows perfect compatibility with brush holders and slip rings, enhancing overall motor efficiency and reliability.

  • High-conductivity material for smooth commutation

  • Wear-resistant and heat-resistant, suitable for heavy-load operation

  • Compatible with DC motors and industrial motor systems

  • Perfect fit with brush holders and slip rings, easy installation and maintenance

  • Improves motor efficiency, operational stability, and service life

Applications: Simo DC motors, synchronous motors, and industrial equipment motors for commutation and current transmission systems.

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Excerpt:

The motor carbon brush is a key component that conducts current between the stationary and rotating parts of a motor. Made from high-quality carbon material, it ensures reliable electrical contact, smooth motor operation, and long-lasting performance.

SIMO Motor Carbon Brushes: Superior Quality and Stable Performance


01 Product Overview

SIMO Motor carbon brushes are precision-engineered critical components manufactured from high-grade electrical carbon materials. Designed for AC and DC motors, generators, and industrial electrical machines, these brushes use a scientifically optimized mix of metal powders and carbon, sintered at high temperatures and precisely machined.

They deliver excellent electrical conductivity, stable commutation, and extended service life, making them ideal for applications in industrial motors, power equipment, and transportation systems.

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西玛电机碳刷

02 Core Technical Features

1. Premium Material Properties

  • Advanced Material Formulation: High-purity graphite combined with copper, silver, and other metal powders for superior conductivity and wear resistance.
  • Optimized Structure: Porous design promotes stable oxide film formation, enhancing commutation performance.
  • Temperature Resilience: Maintains stable electrical and mechanical properties across -40℃ to +120℃.

2. Outstanding Electrical Performance

  • Low Contact Voltage Drop: Minimal contact resistance reduces energy loss.
  • Excellent Commutation: Suppresses sparking effectively for smooth operation.
  • High Current Capacity: Rated current density up to 12–15 A/cm² with strong overload tolerance.

3. Stable Mechanical Properties

  • Uniform Wear: Ensures long lifespan with consistent wear patterns.
  • Balanced Hardness: Shore hardness 60–120, preventing excessive wear on commutators.
  • Self-Lubrication: Reduces friction and prolongs commutator life.

03 Technical Specifications

Parameter CategoryTechnical Specifications
Resistivity5–50 μΩ·m
Rated Current Density12–15 A/cm²
Max Linear Speed70 m/s
Shore Hardness60–120
Flexural Strength≥15 MPa
Bulk Density1.6–2.2 g/cm³
Operating Temperature-40℃ to +120℃

04 Product Series and Applications

1. Electro-Graphite Brushes

  • Features: Moderate hardness, higher resistivity, excellent commutation.
  • Applications: DC motors, turbo generators, asynchronous motors.
  • Typical Uses: Rolling mill motors, winches, cranes.

2. Metal Graphite Brushes

  • Features: High copper content, low resistivity, high current density.
  • Applications: Low-voltage DC motors, charging generators.
  • Typical Uses: Automotive starter motors, electroplating power supplies.

3. Resin-Bonded Graphite Brushes

  • Features: High mechanical strength, impact resistance.
  • Applications: High-speed motors, harsh operating conditions.
  • Typical Uses: High-speed grinders, centrifuges.

05 Product Advantages

1. Performance Advantages

  • Stable Operation: Smooth motor running with minimal vibration.
  • Low Sparking: Maintains spark level ≤1¼ under normal conditions.
  • Long Lifespan: Up to 30% longer life compared to standard brushes.

2. Quality Advantages

  • Strict Quality Control: Monitored from raw material to finished product.
  • Precision Tolerances: Ensures proper fit and optimal contact.
  • Consistency: Uniform performance across batches for easy group replacement.

3. Service Advantages

  • Expert Selection Guidance: Professional support for choosing the right brush.
  • After-Sales Guarantee: Comprehensive technical and quality assurance.
  • Fast Delivery: Sufficient stock to meet urgent requirements.

06 Selection Guide

Selection Considerations

  • Motor Type: AC, DC, or generator specifications.
  • Operating Conditions: Load type, duty cycle, and environmental factors.
  • Technical Parameters: Voltage, current, and speed requirements.
  • Installation Space: Brush dimensions, spring pressure, and mechanical constraints.

Selection Recommendations

  • Heavy-Duty Motors: Metal graphite brushes for high current density and conductivity.
  • High-Speed Motors: Electro-graphite brushes for mechanical strength and superior commutation.
  • Precision Equipment: Resin-bonded graphite brushes for stable operation and low sparking.

07 Installation and Maintenance

Installation Tips

  • Surface Bedding: New brushes should be bedded to ensure ≥80% commutator contact.
  • Spring Pressure: Adjust to 15–25 kPa for optimal performance.
  • Simultaneous Replacement: Replace all brushes in the same motor to maintain balance.

Maintenance Guidelines

  • Regular Inspection: Monitor brush wear and replace when necessary.
  • Cleanliness: Keep brush holders and brushes free of dust and debris.
  • Operational Monitoring: Check spark levels and identify abnormalities promptly.

08 Fault Diagnosis

  • Excessive Sparking: Adjust spring pressure or brush position; check commutator condition.
  • Rapid Wear: Check current density and environmental dust exposure.
  • Poor Contact: Ensure proper bedding and contact area.

09 Service and Support

  • Technical Consultation: Expert guidance for brush selection and application.
  • Installation Assistance: Detailed manuals and professional support.
  • After-Sales Assurance: Comprehensive quality guarantee.
  • Technical Support: Troubleshooting for operational issues.

Conclusion

SIMO Motor carbon brushes combine premium materials, advanced manufacturing, and strict quality control to deliver stable performance and long service life. Selecting SIMO carbon brushes ensures reliable motor operation, reduced maintenance costs, and enhanced equipment efficiency.

Choosing SIMO Motor carbon brushes means choosing trustworthy quality and dependable service, helping industrial operations achieve peak performance and longevity.

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Simo Motor After-Sales Service Policy: Quality First, Customer Foremost

Sincere, Attentive, Dedicated — Simo Always Cares


Preface

Thank you for choosing Simo Motor products. As a company with many years of experience in motor manufacturing, Simo Motor always adheres to the principle of "Quality First, Customer Foremost." Through a comprehensive service system, we ensure that every customer enjoys efficient and professional after-sales support.

Our products have repeatedly been awarded provincial, municipal, and national honors such as “High-Quality Product,” “China Famous Brand Product,” “National Exemption from Inspection Product,” and “China Well-Known Trademark.” To further enhance customer experience, we have formulated this after-sales service policy, aimed at providing comprehensive, prompt, and satisfactory service guarantees.


1. Quality Assurance Commitment

Simo Motor strictly implements full quality control in accordance with international standards, national standards, industry standards, and corporate standards:

  • All products are manufactured under the effective operation of the GB/T 19001-2008/ISO 9001:2008 Quality Management System, ensuring rigorous inspection from raw material intake to final product delivery.

  • We guarantee that all products provided are brand new, unused, and meet the quality requirements stipulated in customer contracts.

  • We maintain a quality management system compliant with GB/T 19001-2000 idt ISO 9001:2000, ensuring its effective operation.


2. Pre-Sales Service

To help customers make the best choice, Simo Motor provides comprehensive pre-sales support:

  • Professional Technical Consultation: Responding to customer inquiries about motor products and technical issues.

  • Personalized Solutions: Objectively introducing Simo Motor product features and performance, and providing customized power solutions.

  • Comprehensive Product Information: Providing detailed quotations, drawings, and motor samples to help customers fully understand the product.


3. Ordering Instructions

To ensure the motor meets your usage requirements, please specify the following parameters when placing an order:

  • Basic Parameters: Motor model, rated power, rated voltage, number of poles, rated frequency.

  • Installation Environment: Protection level, cooling method, installation type, rotation direction, environmental conditions, cable exit position.

  • Usage Conditions: Installation altitude, working environment temperature, motor load type.

For special requirements, a separate technical agreement must be signed before placing an order. You may also call our customer service hotline 159-0292-3228 for professional guidance.


4. Warranty Policy Details

1. Warranty Period

Simo Motor provides a warranty of up to two years from the shipping date. Within this period, if the motor is damaged or cannot operate properly due to manufacturing defects, Simo Motor will repair or replace parts or the motor free of charge.

2. Warranty Coverage

  • The warranty covers product quality issues caused by our company, with free replacement of parts or free repair.

  • Warranty services require correct use and regular maintenance, following the original operation manual and recommended lubrication, cleaning, and care instructions.

3. Exclusions from Warranty

The following are not covered by the warranty:

  • Damage caused by non-designated personnel

  • Unauthorized modifications or self-repair

  • Use of non-official parts or software

  • Failure to follow operation manual instructions for use, handling, and maintenance

  • Damage caused by natural disasters (wind, fire, flood, earthquake, etc.)

  • Normal wear and tear under standard use


5. Post-Warranty Service

After the warranty expires, Simo Motor continues to provide service support:

  • Lifetime Paid Service: After the warranty period, if the product fails, we offer lifetime paid service, supplying consumable parts and components at cost price.

  • Regular Follow-Up: Our after-sales staff will periodically contact users to check product status and address potential issues.

  • Professional Repair Services: The company undertakes repair services for all types of motors, whether under warranty or not, providing professional maintenance and inspection.


6. Service Commitment and Standards

Simo Motor upholds the "Sincere, Attentive, Dedicated — Simo Always Cares" Three-Heart Service Philosophy, ensuring excellent customer experience through standardized service processes:

  • Professional Service Team: A dedicated team provides installation guidance, fault diagnosis, and repair services, ensuring efficient motor operation.

  • Rapid Response Mechanism: After receiving customer feedback, our after-sales team responds promptly and formulates quick solutions.

  • Full Tracking and Records: All service processes are documented to ensure traceability and continuous improvement of service quality.


7. Customer Complaint Channels

If you are not satisfied with Simo Motor’s services, please provide feedback through the following channels:

  • Direct complaints to the service department or headquarters

  • Call our customer service hotline: 159-0292-3228

We take every feedback seriously and continuously strive to improve our service quality.


Conclusion

Simo Motor will continue to provide high-quality products and professional after-sales service. Through a complete service system, we solve your concerns and ensure peace of mind. We firmly believe that only with customer success can Simo Motor grow. Choosing Simo Motor means choosing quality and trust.

Simo Motor — Dedicated Service, Creating the Future Together!

Simo Motor Brand Advantages: Outstanding Quality, Leading Innovation and Development in the Motor Industry

Over 60 Years of Professional Experience, Setting the Benchmark in the Motor Industry


Brand Heritage and Strength

Simo Motor (formerly Xi’an Motor Factory) was established in 1955. As one of the leading enterprises in China’s motor industry, it has over six decades of manufacturing experience and technical expertise. Today, the company has grown into a large-scale modern enterprise integrating motor product R&D, manufacturing, and sales. Its products are widely used in key sectors such as power, coal, petroleum, mining, metallurgy, railways, transportation, chemical, agriculture, water conservancy, and aviation.

With profound technical expertise and continuous innovation, Simo Motor has built a prestigious brand image in the motor industry. Its products are exported to more than 40 countries and regions, including North America, Europe, the Middle East, Southeast Asia, Africa, and Australia, earning trust and praise from global customers.


Core Technology Advantages

1. Leading R&D and Innovation Capability

Simo Motor treats technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Composed of senior engineers and technical experts focusing on cutting-edge motor technology research and applications.

  • Continuous Investment in Technology: 5%-7% of annual sales revenue is invested in R&D to ensure continuous innovation and product upgrades.

  • Patented Technology Achievements: Over 100 national patents, with multiple products receiving national and provincial science and technology progress awards.

  • Industry-Academia Collaboration: Strategic partnerships with renowned universities and research institutes to advance motor technology development.

2. Excellent Product Quality System

Simo Motor has established a robust quality assurance system to ensure each motor meets the highest standards:

  • International Certifications: ISO9001 Quality Management, ISO14001 Environmental Management, and OHSAS18001 Occupational Health and Safety certifications.

  • Strict Quality Control: 68 rigorous inspection processes from raw material procurement to final product delivery to ensure zero defects.

  • Advanced Testing Equipment: Equipped with international motor performance testing systems, vibration analyzers, noise measurement devices, and more.

  • Continuous Quality Improvement: Comprehensive feedback mechanisms for continuous optimization of production processes and product stability.


Product Advantages and Features

1. High-Efficiency Energy-Saving Technology

Simo Motor actively responds to national energy-saving policies with a series of high-efficiency products:

  • High-Efficiency Motor Series: Meets the national GB18613-2020 energy efficiency standards, with some products reaching IE4/IE5 ultra-high efficiency levels.

  • Energy-Saving Technology: Uses premium silicon steel, low-loss bearings, and efficient cooling systems to reduce operating energy consumption.

  • Intelligent Control Technology: Advanced variable frequency control systems optimize motor operation, improving energy savings by 15%-30%.

2. Outstanding Performance

Simo Motor products are known for high reliability, long service life, and low maintenance costs:

  • Powerful Output: Optimized electromagnetic design ensures high starting torque and strong overload capability.

  • Low Vibration and Noise: Dynamic balancing and noise reduction technologies ensure vibration and noise levels below national standards.

  • Strong Environmental Adaptability: Designed for harsh conditions with heat resistance, moisture-proof, and corrosion-resistant features.

  • Long Lifespan Design: Key components use specialized treatment and premium materials, with a design life exceeding 100,000 hours.

3. Comprehensive Product Series

Simo Motor provides a wide range of products to meet diverse customer needs:

  • High-Voltage Motors: Voltage levels of 6kV, 10kV, and power range 200–10,000 kW.

  • Low-Voltage Motors: Series such as YX3, YE3, YE4, with power range 0.55–1,000 kW.

  • Explosion-Proof Motors: Certified for use in flammable and explosive environments.

  • Special Motors: Customized for industries such as mining, metallurgy, and marine applications.

  • Non-Standard Customization: Strong ability to provide tailored solutions according to customer requirements.


Service System Advantages

Simo Motor has established a comprehensive customer service system:

  • Pre-Sales Technical Support: Professional selection guidance, solution design, and product demonstration.

  • In-Sales Support: Strict contract compliance, on-time delivery, and installation guidance.

  • After-Sales Guarantee: 24-month warranty, 24/7 technical support, 48-hour on-site service commitment.

  • Lifetime Maintenance Support: Customer equipment files maintained for full lifecycle service.


Industry Application Advantages

Simo Motor has extensive experience across key industries:

  • Power Industry: Provides reliable motors for thermal, hydro, and nuclear power.

  • Coal Industry: Explosion-proof motors certified for coal mine safety.

  • Petrochemical Industry: Corrosion-resistant and explosion-proof motors for harsh environments.

  • Metallurgy: High-overload, high-temperature resistant motors meet specialized equipment needs.

  • Transportation: Customized motors for railways, urban transit, and ports.


Brand Honors and Certifications

Simo Motor’s excellent product quality and market performance have earned multiple honors:

  • China Famous Brand Product, National Exemption from Inspection Product, China Well-Known Trademark

  • High-Tech Enterprise, Provincial Enterprise Technology Center

  • Multiple provincial and ministerial-level science and technology awards

  • Credit-worthy and trustworthy enterprise, AAA-level quality reputation


Conclusion

Choosing Simo Motor means choosing reliable quality, leading technology, and comprehensive service support. Over 60 years of professional accumulation have given Simo Motor deep technical expertise and rich industry experience, providing customers with the best motor products and complete power solutions.

In the future, Simo Motor will continue to adhere to the philosophy of “Quality First, Innovation Driven, Customer Foremost”, constantly improving product technology and quality, creating greater value for customers, and contributing to the development of China’s motor industry.

Simo Motor — Powerful, Efficient, and Fully Supported!

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