Industrial Carbon Brush Holders

What is a motor brush holder or carbon brush holder?

The function of the motor brush holder is to apply spring pressure to the carbon brush that is in sliding contact with the surface of the commutator or collector ring, so that the current flows steadily between the stator and the rotating body.

The carbon brush holder and carbon brush are important parts of the motor.

No matter what the characteristics of the carbon brush are, if the carbon brush holder is not suitable, the carbon brush cannot show its excellent characteristics, and it has an important impact on the performance and life of the motor itself.

The structure of the Motor brush holder  or carbon brush holder:

The structure of the motor brush holder consists of a brush box part (fixing the carbon brush in place), a push part that presses the carbon brush with appropriate pressure to prevent the carbon brush from vibrating, and a brush box frame part and a push part that connect the carbon brush.

The carbon brush holder is composed of the motor fixed part of the fixed bracket.

What are the functions and performance requirements of the motor brush holder?

If the carbon brush is stable, check or replace the carbon brush, the carbon brush can be easily loaded into the carbon brush box and unloaded, and the exposed part of the carbon brush under the carbon brush box can be removed (carbon brush box and commutator bottom) or chuck. Block ring surface gap), prevent commutator or collector ring wear, carbon brush pressure, push direction and push position changes, carbon brush wear structure is firm.

Carbon brush holders are mainly made of synthetic materials such as bronze castings and aluminum castings. The material of the brush holder itself must have good mechanical strength, processing performance, corrosion resistance, heat dissipation and conductivity.

What is the role of the carbon brush holder?

The carbon brush device on the wound motor, the starting resistance outside the motor is transmitted to the rotating rotor through the carbon brush to control the starting current, and the excitation current outside the generator is transmitted to the rotating rotor through the carbon brush to establish voltage. And reactive power.