How to improve poor lubrication of starter bearings
The starter bearing (commonly known as the copper sleeve) often wears too much in normal use, resulting in looseness of the journal and the copper sleeve, which eventually affects the performance of the starter. There are two main reasons why the starter copper sleeve is easy to wear:
First, it bears a large load, which is an unchangeable reality;
Second, it is poor lubrication, which can be improved. The lubrication of the starter copper sleeve and the armature shaft journal is mostly applied during disassembly and maintenance, and the starter cannot be lubricated without disassembly during normal use. When the starter is working, the outer cylindrical surface of the journal contacts the four inner surfaces of the copper sleeve, squeezing out part of the grease from the friction surface, accelerating the consumption of the grease, causing dry friction between the journal and the copper sleeve when the starter is working, and aggravating the wear of both. For this reason, the experiment turned two oil grooves with a depth of about 0.8mm and a width of about 1.5mm on the inner cylindrical surface of the copper sleeve, and filled the grooves with grease and reassembled them during the starter maintenance. After running inspection, it has achieved the purpose of long-term lubrication and reduced the wear of the journal and copper sleeve.
