Replacement of brush dc motor controller should pay attention to the problem

There is one important parts brush dc motor controller, in the use of long wear would happen. If wear in severe cases, then will affect the normal use, the need for replacement of brush. But when change the brush should pay attention to the following questions: 1. On the basis of different types of brush, the stiffness and the current density is also different, so should choose when to replace the same type of brush for replacement. 2. If it is in the replacement of double brush, it is necessary to pay attention to the change in the order, prevent brush to beat effect reversing. 3. In the replacement of a single brush, without grinding used directly, but in the same brush arm has 2 or more brush need to replace, then you need to use sandpaper grinding, the contact area with the commutator is not less than 75%. 4. For the new brush grinding, need grinding into the radian of like the old brush size. 5. To brush the pressure to adjust, and the size of the brush to be appropriate, not too big or too small. What has been discussed above, we know how to change the brush dc motor controller?