How to judge the quality of a Power Tools Carbon Brush quality is good or bad
Power Tools Carbon Brush directly affect the future use of the motor, if the Power Tools Carbon Brush damage the motor will not follow the normal work, so choose a good electric tool carbon brush is necessary, then how can a judge Is the electric tool carbon brush good or bad?
From the use of view, the use of Power Tools Carbon Brush good performance of the signs are the following:
One, look at the appearance
1, see hardness 2, see color 3, see if there are impurities 4, look at the packaging
Second, look at the use of the situation
1, whether the start is weak.
2, days cool or battery slightly loss of power in the case can not start.
3, the electromagnetic switch when the time to stop (that is, driving the gear is not sensitive).
Third, the wear situation
Determine the Power Tools Carbon Brush quality performance is a very important basis is the Power Tools Carbon Brush wear rate. The smaller the wear rate of the carbon brush for the power tool, the longer it will be. The same because the Power Tools Carbon Brush wear rate at a relatively small time, the relevant equipment operation and maintenance personnel will be relatively small workload, operating costs are very low.
1, the smooth surface of the slip ring will cause a certain degree of wear on the electric tool carbon brush: If the smooth surface of the slip ring is relatively high, because the friction coefficient will be relatively small, then the Power Tools Carbon Brush wear rate It can be reduced. In addition, we all know that the surface of the slip ring has a layer of oxide film, the main role is to reduce the slip ring and electric tool carbon brush between the friction coefficient, so as to reduce the degree of wear of electric tools carbon brush.
2, the pressure of the compression spring will also affect the degree of wear of the electric tool carbon brush: the pressure of the compression spring must be adjusted moderate, because if the pressure spring pressure is too large, it will increase the mechanical tool carbon brush mechanical wear; The pressure is too small, although the electric tool between the carbon brush and slip ring friction between the smaller, but likely to cause poor contact with the spark.
3, the current will also affect the Power Tools Carbon Brush wear. Under normal circumstances, the graphite Power Tools Carbon Brush in the positive Power Tools Carbon Brush current flow than the negative Power Tools Carbon Brush current flow is relatively large, casually will cause the positive electric tool carbon brush wear degree than the negative Power Tools Carbon Brush wear a little more. And the wear of the positive slip ring is also more than the negative slip ring, then each time the unit overhaul, we can adjust the Power Tools Carbon Brush positive and negative cable head to achieve the purpose of delay wear.
4, the Power Tools Carbon Brush material can also affect the electric tool carbon brush wear. Different power tools carbon brush production business and different power tools carbon brush models its composition and structure is not the same, then the Power Tools Carbon Brush wear rate will not be the same. So we recommend that the majority of customers try to choose the same kind of electric tools carbon brush, because it can reduce the product model caused by the Power Tools Carbon Brush uneven self-wear rate.