Electric Motor Coals 6*12*22mm Carbon Brush Replacement for Power Tool

Electric Motor Coals 6×12×22mm Carbon Brush Replacement for Power Tool

Key Information Analysis:

1. Product Attribute: Carbon Brush Replacement for Power Tool Motors
   Made by pressing a mixture of high-purity graphite and metal powders such as copper and tin, it features excellent electrical conductivity, wear resistance, and high-temperature resistance. As a core vulnerable component of the motor, it conducts current through sliding contact with the commutator, ensuring the motor of the power tool can stably output power.
2. Compatibility Range:
   Based on the 6×12×22mm 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.;
   • Portable equipment: some models of jigsaws, polishers, impact wrenches, etc.
     The core of compatibility is that the size of the carbon brush must completely match the motor's brush holder (with an error of ≤0.2mm). In particular, the width (12mm) and thickness (6mm) must strictly correspond to the specifications of the original carbon brush to avoid looseness or poor contact after installation.
3. Size Specifications: 6×12×22mm
   This size falls into the category of medium-sized carbon brushes. The length of 22mm allows for a longer service life (compared to small carbon brushes) and is suitable for motors with a power of 500-1500W. Dimensional accuracy directly affects usage safety; excessive errors may lead to insufficient contact area between the carbon brush and the commutator, causing excessive motor sparks, overheating, or even tool burnout.
4. Functions and Roles:
   • Acts as a "current conduction bridge" for the motor, transmitting current from the external power source to the rotating rotor to drive the power tool to start and operate normally;
   • Utilizes the self-lubricating property of graphite to reduce wear on the commutator, while assisting in motor heat dissipation and extending the overall service life of the tool.
5. Replacement Signals:
   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 7-8mm);
   • There are significantly more sparks at the carbon brush during motor operation, accompanied by an abnormal burning smell;
   • The tool has reduced power, slow startup, or obvious "stuttering" during operation.