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An Insight into Carbon Brushes and Its Related Aspects

Date: 2018-11-29 16:52:52

      For understanding what are carbon brush, let us begin with having an idea about what are slip rings? A slip ring is an electromechanical device which helps in transmitting the electrical and power signals from the stationary part to a rotating structure. There are some key components without which the transmission of signals won't be possible and one of them is carbon brush. In fact, it is the combination of ring and the brush which makes the transmission possible.

Carbon brushes

      The different kind of rotating machines are bound by one single objective and that is to convert mechanical energy into electrical energy and the other way round. The list of the different kinds of rotating equipment either use direct current or the alternating current, based on the kind of actions that they used for.

      The basic aspect of transferring current from the rotating part to the stationary structure in any equipment is achieved with carbon brush playing an integral part in the whole process. Irrespective of the size and structure of the equipment, the carbon brush always fits the need of transferring current.

      For an effective transmission of the electrical signal the carbon brush has to be set in a certain angle and has to be kept stationary in some cases. In order to keep the carbon brush fixed at a certain spot, the slip ring manufacturer employ the carbon brush holder.

The reason behind keeping the carbon brush fixed

      The carbon brush needs to be fitted with the holder to keep it intact in a place. The reason being, for the process of transmission to be carried out effectively, the slip ring makes a sliding contact between the slip ring and brush. Also, keeping the position of the brush intact makes the brush effectively slide over the surface of the slip ring or the commutator. This, in turn, augurs the transmission process.

Brush holders

      Generally, the carbon brush holder is classified into two different types. The first type of carbon brush holder is fixated to a swivel arm, while the second type of carbon brush holder is designed in such a way that the brush can easily slide in the supporting structure.

 

      The sliding form of carbon brush holder is further categorized into three different types based on the angles at which the brush is allowed to meet the commutator or the slip ring collector.

      First in the list of three is the radial form of carbon brush holder. In this form, the holders are designed in such a way that the brush center line is aligned with the collector surface n radial format.

      The second in the list is the trailing form of the brush holder. In this form of holders, the slope of the brush center line with respect to the radial line changes as per the rotation.

      The third and the final in the list is the reaction based carbon brush holder which makes the slope of the brush centerline change with respect to the radial line against the general rotational motion.


Reference Parts# of Slip Rings as below:
High Speed Slip Rings
MP320 series Pancake Slip Ring
Install instruction -Through bore style
MW5158 series High Current Slip Rings
ME1222 seriesCEthernet Slip Rings
MSDI216 series HD-SDI/1080P Slip Rings

Others:
Pri: Understanding the Concept Behind Slip Rings Next Combination of Slip Rings and Measuring Tools
Others:
A Discussion on Separate Slip Rings
A Comparison of Rotating Electrical Connectors and Electrical Slip Ring
Importance of Slip Rings in Investment Intensive Production Plants
How Wireless Slip Rings Work Without Any Physical Connection?
A Discussion on Contact System and Slip Ring Transmitter
Importance of Through Bore Slip Ring Over Other Forms of Slip Ring

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