The starter bearing (commonly known as the copper sleeve), in normal use, often suffers from the wear and tear of the journal and the copper sleeve, which ultimately affects the performance of the starter. There are two main reasons for the wear of the copper sleeve of the starter: one is that the load is large, which is an unchangeable reality; the other is poor lubrication, which can be improved. The starter bearing (commonly known as the copper sleeve), in normal use, often suffers from the wear and tear of the journal and the copper sleeve, which ultimately affects the performance of the starter.

 

When the starter is working, the outer circular surface of the journal is in contact with the four sides of the copper sleeve, and part of the grease is squeezed out of the friction surface to accelerate the consumption of the grease, causing dry friction between the journal and the copper sleeve when the starter is working. Increased wear and tear on both. To this end, the test was to turn two oil grooves of about 0.8 mm deep and about 1.5 mm wide on the inner surface of the copper sleeve. After the starter was overhauled, the tank was covered with grease and then reassembled. After running the test, it not only achieves the purpose of long-term lubrication, but also reduces the wear of the journal and the copper sleeve.