Brush card vs. brush holder
Groschopp DC motor model PM60 and PM80 frames have either a brush card or replaceable brush holders inside of them, but knowing the difference between the two could make a world of difference for your application.
The brush card and brush holders generally do the same thing in that they transmit power to a DC motor by passing voltage and current to the armature. The life of the brush itself will last depending on the amount of friction and speed that comes from the armature. Brushes have a certain amount of life before they need to be replaced, which can be easily done with brush holders, but not so much with a brush card.
When using a DC motor, brush holders are a good choice for drier areas that don’t come into contact with a lot of liquids, especially water. They can be easily purchased and replaced by the user and are generally cheaper than a brush card.
Brush cards are ideal for rougher applications where the motor needs to withstand water spraying on or coming in contact with the motor. Brush cards are sealed inside of the motor, which makes the brushes better protected from environmental situations that could easily cause damage to and performance of the brush itself. Brush cards can also be designed for higher temperature and higher current applications to get the best performance out of your application. When brush life fails in a brush card, the whole motor will need to be removed from the application and sent back to us to replace the brush card, and sometimes the whole motor will need to be replaced depending on how many hours have been put into it already.
If you have more questions concerning brushes, brush cards and which one better suits your application, contact us today at sales@groschopp.com or call us at 800-829-4135.
