6.3*13*18.8/20 MM Carbon Brush Motor Brushes for Power Tools Replace Parts

6.3×13×18.8/20 MM Carbon Brush Motor Brushes for Power Tools Replace Parts

Key Information Analysis:

1. Product Attribute: Motor Brushes for Power Tools Replace Parts
   Made by pressing a mixture of graphite and an appropriate amount of metal powder (such as copper and tin), it has good electrical conductivity, wear resistance, and high-temperature resistance. The reasonable proportion of metal components (copper content is about 20%-30%) enables it to adapt to high-frequency operation and medium-load scenarios of power tool motors, reducing overheating or failure of the carbon brush caused by current fluctuations.
2. Compatibility Range:
   Based on the 6.3×13×18.8/20mm specification, it is suitable for brushed motors of various medium-power power tools. Common applicable scenarios include:
   • Handheld power tools: such as medium-sized electric drills, angle grinders, grinders, reciprocating saws, etc. (power 500-1200W);
   • Portable equipment: some models of jigsaws, polishers, impact wrenches, etc.
     The core of compatibility is that the size must completely match the motor's brush holder. The length difference between 18.8mm and 20mm must strictly correspond to the specifications of the original carbon brush (with an error of ≤0.2mm). In particular, the width (13mm) and thickness (6.3mm) must fit precisely to avoid looseness or poor contact after installation.
3. Size Specifications: 6.3×13×18.8/20 MM
   This size belongs to the category of medium-sized carbon brushes. The lengths of 18.8mm and 20mm provide different wear allowances (service life is about 1000-1500 hours) and are suitable for most standard brush holders. Dimensional accuracy directly affects the use effect; excessive errors may lead to insufficient contact area between the carbon brush and the commutator, causing increased motor sparks, abnormal operation noise, or even power reduction.
4. Functions and Roles:
   • As the "current conduction component" of the power tool motor, it stably transmits external current to the rotor through sliding contact with the commutator, ensuring the tool starts normally and outputs power;
   • The self-lubricating property of graphite can reduce wear on the commutator, extend the overall service life of the motor, and reduce the frequency of equipment maintenance.
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 6-7mm);
   • There are significantly more sparks at the carbon brush during motor operation, or accompanied by a burning smell;
   • The output power of the tool decreases, it starts slowly, or there is a "stuttering" sensation during operation.