Carbon Brushes Kit for Electric Motors 6.2*13.5*17/18 MM

Universal Carbon Brushes Kit for Electric Motors 6.2×13.5×17/18 MM Repair Accessories

Key Information Analysis:

1. Product Attribute: Universal Carbon Brushes Kit for Electric Motors as Repair Accessories
   Made by pressing a mixture of high-purity graphite and a balanced proportion of metal powder (such as copper and silver), it has two core characteristics:
   • Wide universality: The same cross-sectional size (6.2×13.5mm) is paired with two lengths (17mm/18mm), adapting to small and medium-sized motors of different brands and models. There is no need to strictly match a single equipment specification, reducing procurement and replacement costs;
   • All-round adaptability: The material formula balances conductivity (copper content is about 20%-30%), wear resistance, and high-temperature resistance, adapting to various working conditions of motors such as continuous operation and high-frequency start-stop, with a service life of about 800-1500 hours.
2. Compatibility Range:
   Based on the 6.2×13.5×17/18mm specification, it is suitable for universal motors in various scenarios. Common compatible equipment includes:
   • Household appliance motors: Such as vacuum cleaner motors, large fan motors, washing machine drive motors, etc.;
   • Small and medium-sized power tools: Medium-sized electric drills, grinders, polishers, electric wrenches, etc. (power 400-1200W);
   • Light industrial equipment: Small conveying motors, packaging machinery motors, auxiliary motors for medical equipment, etc.
     The core of compatibility is that the cross-sectional size (6.2×13.5mm) must match the inner cavity of the brush holder (with an error of ≤0.2mm). The length difference between 17mm and 18mm is used to fine-tune the installation depth, ensuring moderate contact pressure between the carbon brush and the commutator.
3. Size Specifications: 6.2×13.5×17/18 MM
   This size belongs to small and medium-sized carbon brushes. The 6.2mm thickness and 13.5mm width are suitable for most standard brush holder structures. The 1mm length difference (17mm/18mm) is the key to its universal design, covering more subtle differences in installation space caused by production batches or brand variations. The dimensional accuracy is controlled within ±0.1mm to avoid poor contact or abnormal operation noise caused by dimensional deviation.
4. Functions and Roles:
   • Serves as the "current conduction bridge" of the motor, transmitting external current to the rotor through stable contact, ensuring the motor's power output under different loads, and restoring the normal function of the equipment;
   • The universal design reduces the pressure of spare parts inventory, suitable for maintenance personnel or household users to meet the carbon brush replacement needs of various equipment, improving maintenance efficiency.
5. Replacement Tips:
   The carbon brush kit 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 5.5-6mm);
   • There are significantly more sparks at the carbon brush during motor operation, accompanied by continuous friction noise;
   • The output power of the equipment decreases, such as reduced rotational speed, insufficient power, or even difficulty in starting.