Carbon Brushes for Electric Motors 6*11*26/27 MM

Replacement Spare Part Carbon Brushes for Electric Motors 6×11×26/27 MM

Key Information Analysis:

1. Product Attribute: Universal Replacement Carbon Brushes for Electric Motors
   Made by pressing a mixture of high-purity graphite and an appropriate amount of metal powder (such as copper and tin, with a copper content of about 20%-30%), it has two core characteristics:
   • Dual-length compatible design: The same cross-sectional size (6×11mm) is paired with two lengths (26mm and 27mm), and the small 1mm length difference can cover the adaptation needs caused by differences in brush holder installation spaces of motors from different brands and models, improving the versatility of spare parts;
   • Balanced performance: The material balances conductivity and wear resistance, adapting to various working conditions of motors such as continuous operation and high-frequency start-stop. The 26mm/27mm length provides sufficient wear allowance, with a service life of about 1200-1800 hours, reducing replacement frequency.
2. Compatibility Range:
   Based on the 6×11×26/27mm specification, it is suitable for various small and medium-sized motors. Common compatible equipment includes:
   • Industrial auxiliary motors: such as small conveying motors, ventilation equipment motors, drive motors for packaging machinery, etc.;
   • Medium-sized power tools: such as impact drills, grinders, polishers, etc. (power 500-1200W);
   • Large household appliance motors: some models of vacuum cleaners, large mixers, industrial-grade fans, etc.
     The core of compatibility is that the cross-sectional size (6×11mm) must completely match the brush holder (with an error of ≤0.2mm). The two length specifications correspond to the installation depths of different motors respectively, and must strictly match the length of the original carbon brush to avoid over-tight installation due to excessive length or insufficient contact pressure due to excessive shortness.
3. Size Specifications: 6×11×26/27 MM
   This size belongs to the category of small and medium-sized carbon brushes. The 6mm thickness and 11mm width fit most compact-structured brush holders. The 26mm and 27mm length designs balance wear buffer and installation space – 26mm is suitable for motors with slightly compact space, while 27mm provides allowance for equipment requiring a longer wear cycle. The dimensional accuracy is controlled within ±0.1mm to ensure uniform contact with the commutator, reducing sparks and vibration noise during operation.
4. Functions and Roles:
   • Serves as the "current conduction medium" of the motor, stably transmitting external current to the rotor through sliding contact with the commutator, ensuring the motor's power output under different loads and restoring the normal function of the equipment;
   • The universal spare part attribute reduces inventory pressure, suitable for maintenance scenarios or enterprises to meet the carbon brush replacement needs of multi-model motors, improving maintenance efficiency.
5. Replacement Tips:
   The carbon brush should be replaced in time when the motor or related equipment shows the following conditions:
   • The carbon brush is worn down to less than 1/3 of its original length (about 8.7mm for the 26mm specification and about 9mm for the 27mm specification);
   • There are significantly more sparks at the carbon brush during motor operation, accompanied by a burning smell or continuous friction noise;
   • The output power of the equipment decreases, such as reduced rotational speed, insufficient power, or even difficulty in starting.