5 * 10 * 17 MM Electric Carbon Brush for Power Tool Use Replacement Parts

5×10×17mm Electric Carbon Brush for Power Tool Use – Replacement Parts

Key Information Analysis:

1. Product Attribute: Replacement Carbon Brush for Small Power Tools (Electric Carbon Brush as Replacement Parts)
   Made by pressing a mixture of high-purity graphite and a small amount of copper powder (copper content approximately 15%-25%) and subjected to precision processing, it has three core characteristics:
   • Miniaturized adaptation: The slender cross-sectional size of 5×10mm is specially designed for compact brush holders of small power tools, adapting to micro motors with a power of 150-600W. It can easily fit into narrow mounting slots, reducing jamming caused by dimensional deviations;
   • Wear-resistant and long-lasting: The material has moderate density, balancing conductivity and friction resistance. The 17mm length provides sufficient wear allowance, with a service life of about 600-1200 hours, which can adapt to high-frequency, light-to-medium load operations of small tools (such as home DIY drilling and small-scale grinding);
   • High versatility: The size is a common specification for small carbon brushes in the industry, compatible with small power tools of most mainstream brands. There is no need to strictly match the original model, reducing the difficulty of purchase.
2. Compatibility Range:
   Based on the 5×10×17mm specification, it is suitable for brushed motors of various small power tools. Common compatible equipment includes:
   • Small household tools: such as mini electric drills, small sanders, handheld polishers, electric screwdrivers, etc.;
   • Precision operation tools: some models of jade carving machines, nail grinders, small edge trimmers, etc. (power 150-600W).
     The core of compatibility is that the cross-sectional size (5×10mm) must fit perfectly with the brush holder (with an error of ≤0.1mm), and the 17mm length must correspond to the motor installation space to avoid interference with internal structures during operation due to excessive length.
3. Size Specifications: 5×10×17mm
   This size belongs to the category of micro carbon brushes. The 5mm thickness and 10mm width fit the narrow structure of most small brush holders. The 17mm length includes about 5.7mm of safety wear allowance (i.e., it needs to be replaced when worn down to 1/3 of the original length). The dimensional accuracy is controlled within ±0.1mm to ensure uniform contact with the commutator and reduce sparks and vibration noise during operation.
4. Functions and Roles:
   • Core of current conduction: Through sliding contact between graphite and the commutator, it stably transmits external current to the motor rotor, ensuring power output of small tools during fine operations (such as screw tightening and small-area grinding);
   • Vulnerable part characteristic: As a consumable, its timely replacement can prevent direct friction between the metal base and the commutator after excessive wear of the carbon brush, thereby protecting the motor from damage and reducing maintenance costs.
5. Replacement Tips:
   The carbon brush should be replaced in time when the power tool shows the following conditions:
   • The carbon brush is worn down to less than 1/3 of its original length (about 5.7mm), or has obvious cracks or chips;
   • There are significantly more sparks at the carbon brush during motor operation, accompanied by a continuous "sizzling" friction sound;
   • The output power of the tool decreases, such as slower rotational speed, insufficient power, or even difficulty in starting (especially under load).