5*11*15/15.8 MM Carbon Brush Suitable for Electric Motors and Power Tools

5×11×15/15.8 MM Superior Carbon Brush Suitable for Electric Motors and Power Tools

Key Information Analysis:

1. Product Features: Superior Carbon Brush
   Made by precision pressing of a mixture of high-purity graphite and ultra-fine metal powders (such as silver and copper), it has three core advantages:
   • High conductivity: The optimized proportion of metal components (silver content is about 5%-8%) reduces resistance by more than 20% compared to ordinary carbon brushes, minimizing current transmission loss;
   • Super wear resistance: The graphite crystal structure has undergone special treatment, improving wear resistance by 30% and extending service life (about 1500-2000 hours);
   • High temperature resistance: It can withstand working temperatures above 150℃, adapting to the temperature rise environment when the motor runs at high speed, and avoiding carbon brush fragmentation due to overheating.
2. Compatibility Range:
   Based on the 5×11×15/15.8mm specification, it is widely compatible with brushed motors in the following equipment:
   • Power tools: Small and medium-power tools (300-800W) such as light electric drills, sanders, small angle grinders, jigsaws, etc.;
   • Electric motors: Small household water pump motors, ventilation fan motors, medical equipment drive motors, etc.
     The core of compatibility is that the size must completely match the brush holder. The length difference between 15mm and 15.8mm must strictly correspond to the original carbon brush (with an error of ≤0.1mm) to ensure uniform contact pressure between the carbon brush and the commutator and avoid abnormal sparks.
3. Size Specifications: 5×11×15/15.8 MM
   This size belongs to small and medium-sized carbon brushes. The 5mm thickness and 11mm width are suitable for most compact-structured brush holders, and the two length specifications meet the installation depth requirements of different equipment. The dimensional accuracy is controlled within ±0.05mm to ensure no looseness after installation and reduce vibration noise during operation.
4. Functional Advantages:
   • Enhances equipment operation stability: The low-resistance characteristic reduces the instantaneous voltage drop when the motor starts, lowering the probability of "stuttering";
   • Compatible with multiple scenarios: It can meet the high-frequency start-stop needs of power tools and adapt to the continuous operation scenarios of motors, with strong versatility;
   • Optimizes maintenance costs: The long-life design reduces replacement frequency, making it suitable for household users and professional maintenance scenarios.
5. Replacement Tips:
   It is recommended to replace the carbon brush when the equipment shows the following conditions:
   • The carbon brush is worn down to less than 1/3 of its original length (about 5-5.3mm);
   • The sparks at the commutator during motor operation are persistently blue (normally weak orange);
   • The output power of the equipment fluctuates significantly, or there is intermittent power failure.