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.
Technical parameters
| 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( A/ cm2) |
Permissible circumferential speed(m/s) | Unit pressure used(Pa) | |||
| J204 | 0.6 | 95 | 588 | 4.04 | 1.1 | 0.30 | 0.20 | 15 | 20 | 19600-24500 |
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.
Maintenance
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.
Motor slip ring carbon brush J204 series Show
