DC motor faults are mostly concentrated on components such as brushes, commutators, and bearings. These three locations are the most likely locations for failure.
Then let's take a look at how to maintain and maintain the DC motor.
1 commutator maintenance:
The commutator is a very important part of the DC geared motor, and this part is also one of the main causes of the motor failure. One of the most difficult to deal with is the commutator. The working condition of the commutator is directly related to the working condition of the DC motor. Therefore, the maintenance of the commutator must be strengthened.
The main fault of the commutator is the reversing spark. In order to make the motor run better, we must keep the surface of the commutator clean and do regular cleaning. If the commutator surface has slight streaks or grooves. At this time, the commutator can be polished or polished, and then the surface of the commutator is wiped with a clean silk cloth, which is advantageous for forming an oxide film protection commutator.
2 brush maintenance and maintenance
(1) Confirm that the brush 辫 screw is fastened, and the brush 辫 does not affect the free movement of the brush:
(2) Make sure that you don't touch the non-insulator inside the motor.
(3) Check whether the brush can move freely in the brush holder, the spring position must be accurate and the function is normal.
(4) The distance between the brush holder and the surface of the commutator should be the same
(5) The replacement carbon brush should be suitable for the commutator surface curve
3 bearing maintenance
(1) Scrape the grease inside the bearing with a bamboo piece and preliminarily clean it with low-pressure steam, because old oil or some other debris will be inside the bearing list for a long time.
(2) Check whether the inner and outer rings of the bearing have running circles.
(3) Measure the bearing clearance to check whether the bearing has cracks, rust and other phenomena. The rotating bearing should have a smooth sound and no jamming.
(4) If you encounter the following problems, you must replace the new bearings.
There is no rust in the inner and outer ballistics.
The inner and outer clips are worn too much or loose.
There are cracks or rust on the balls or rollers
There is overheating and discoloration in the marbles or ballistics.
There is a jam when turning.
The bearing clearance exceeds the maximum value.
Bearing lubrication is generally determined by bearing speed, operating temperature, working environment, ambient temperature, etc.
The above are the problems encountered by DC motor maintenance, but generally these problems will not occur unless the motor is in a very harsh working environment or is overloaded. If you really encounter some problems on the motor, you can find the manufacturer to replace it directly or ask the technology to repair it.
