Motor slip ring carbon brush J204 series is a device that transfers energy or signals between the fixed and rotating parts of an electric motor, generator, or other rotating machinery. It is generally made of pure carbon with a coagulant, and its appearance is usually a block, stuck on a metal bracket, with a spring inside to tightly press it onto the shaft. The appearance of the carbon brush is a bit like a pencil eraser, with a wire leading out at the top. The volume varies from large to small. Carbon brushes, as a sliding contact, are widely used in many electrical equipment. The main product materials include electrochemical graphite, impregnated graphite, and metallic (including copper and silver) graphite.
|model||Resistivity(μΩ·m)||Rockwell hardness（HR）steel ball 10mm||bulk density(g/cm3 )||Short circuit commutator test||recommended operating conditions|
|Basic value||Load(N)||Contact voltage drop of a pair of brushes)V)||50hwear and tear ≤mm||frictional coefficient≤||current density(
|Permissible circumferential speed(m/s)||Unit pressure used(Pa)|
Common specifications: J204 32 * 12 * 12 mm, J204 60 * 30 * 25, J204 20 * 32 * 50mm. If you need any other specifications, please contact us directly.
If the carbon brush is worn to a certain extent, it should be replaced with a new one. All carbon brushes should be replaced at once; otherwise there may be uneven current distribution. For large units, we usually recommend customers to replace 20% of the carbon brushes on each brush rod of each motor every time, with an interval of 1-2 weeks. Gradually replace the remaining carbon brushes after running in to ensure the normal and continuous operation of the unit.