Slip ring is a rotating connection componentof electric power, signal and other media composed of rotating (rotor) and stationary (stator)device.Electriccurrent and signal are connected and transmitted through brushes. Therefore, the performance of the brush determines the performance quality of the entire slip ring. Different types of slip rings require different materials and types of brushes, and each has its own characteristics.
Alloy brush wire
The brush wire is generally made of alloy materials, and the surface electroplating process is carried out according to different application requirements. Mainly used in slip rings with low power and small size. It is characterized by easy manufacture, space saving and relatively low cost. However, there are also shortcomings such as easy deformation and poor transmission stability.
Carbon graphite brush
Carbon graphite brush a rectangular contact point, it has a larger contact surface with the conductive ring, which is suitable for high-current electric slip rings. it is made of carbon graphite sometimes with metals included to boost current capacity. It has high conductivity, good oxidation resistance and stability. The disadvantage is that different graphite materials and manufacturing processes have large differences in conductivity, large volume, and high manufacturing costs.
Carbon graphite brush
Carbon graphite brush a rectangular contact point, it has a larger contact surface with the conductive ring, which is suitable for high-current electric slip rings. it is made of carbon graphite sometimes with metals included to boost current capacity. It has high conductivity, good oxidation resistance and stability. The disadvantage is that different graphite materials and manufacturing processes have large differences in conductivity, large volume, and high manufacturing costs.
Rolling ring brush
The rolling ring brush is similar to the ball principle in the ball bearing, and uses the rolling between the flexible ring and the ring to connect and transmit the power signal. It is characterized by low noise, reduced dust caused by friction, higher speed, lower rolling friction and longer life. However, they also have disadvantages such as higher cost, higher requirements for manufacturing process precision, and higher difficulty in repairing once worn.
Post time: Nov-27-2021
