Carbon brushes play a critical role in transmitting electrical current between stationary and rotating components through sliding contact. The performance of carbon brushes significantly influences the efficiency of rotating machinery, underscoring the importance of selecting the appropriate carbon brushes. While vacuum cleaner motors require specific carbon brushes, power tools' motors demand more wear-resistant options. In response to this need, our company has developed the RB series graphite materials tailored to the characteristics of power tool motors. These graphite carbon blocks exhibit exceptional wear-resistant properties, making them the ideal choice for various power tool carbon brushes. The RB series graphite materials have earned a stellar reputation in the industry and are widely preferred by both Chinese and international power tool companies.
At Huayu Carbon, we harness advanced technology and draw upon years of expertise in quality assurance within our research domain to develop and manufacture carbon brushes that cater to diverse customer requirements and applications. Our commitment to environmental responsibility ensures that our products have minimal environmental impact, making them suitable for a broad range of applications.
In conclusion, Huayu Carbon's dedication to innovation and quality is evident in the development of the RB series graphite materials, specifically designed to meet the demands of power tool motors. With a focus on reliability, performance, and environmental sustainability, our carbon brushes are the ideal choice for customers seeking superior quality and longevity. Choose Huayu Carbon for genuine carbon brushes that elevate the efficiency and durability of your machinery.
The carbon brushes in this range offer excellent commutation performance, low sparking, good durability, electromagnetic interference resistance, and superior braking performance. They are widely utilized across a variety of DIY and professional electric tools, especially the safety brushes (automatic shutdown), which enjoy a strong reputation in the market.
The material employed in this product harmonizes with the requirements of most angle grinders.
Type | Material name | Electrical resistivity | Shore hardness | Bulk density | Flexural strength | Current density | Allowable circular velocity | Main Use |
( μΩm) | (g/cm3) | (MPa) | (A/c㎡) | (m/s) | ||||
Electrochemical graphite | RB101 | 35-68 | 40-90 | 1.6-1.8 | 23-48 | 20.0 | 50 | 120V power tools and other low-voltage motors |
Bitumen | RB102 | 160-330 | 28-42 | 1.61-1.71 | 23-48 | 18.0 | 45 | 120/230V Power tools/Garden tools/cleaning machines |
RB103 | 200-500 | 28-42 | 1.61-1.71 | 23-48 | 18.0 | 45 | ||
RB104 | 350-700 | 28-42 | 1.65-1.75 | 22-28 | 18.0 | 45 | 120V/220V power tools/cleaning machines, etc | |
RB105 | 350-850 | 28-42 | 1.60-1.77 | 22-28 | 20.0 | 45 | ||
RB106 | 350-850 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | Power tools/garden tools/drum washing machine | |
RB301 | 600-1400 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | ||
RB388 | 600-1400 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | ||
RB389 | 500-1000 | 28-38 | 1.60-1.68 | 21.5-26.5 | 20.0 | 50 | ||
RB48 | 800-1200 | 28-42 | 1.60-1.71 | 21.5-26.5 | 20.0 | 45 | ||
RB46 | 200-500 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | ||
RB716 | 600-1400 | 28-42 | 1.60-1.71 | 21.5-26.5 | 20.0 | 45 | Power tools/drum washing machine | |
RB79 | 350-700 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | 120V/220V power tools/cleaning machines, etc | |
RB810 | 1400-2800 | 28-42 | 1.60-1.67 | 21.5-26.5 | 20.0 | 45 | ||
RB916 | 700-1500 | 28-42 | 1.59-1.65 | 21.5-26.5 | 20.0 | 45 | Electric circular saw, electric chain saw, gun drill |