Зачем экскаваторам масло, И как часто

Why do you need butter?
When the digger parts is working, there are dozens of positions on the forearm and bucket that will have relative movement, and the pins and bushings of these parts have been frictions when working, and because of the large work load of the excavator, the force on these parts is also very large.
The 4 pins on the excavator bucket need lubrication

This can be real steel and iron, such a large work intensity if allowed to “dry grinding”, the shaft pin and sleeve will have serious wear, with a few days of gap is very large, affecting the work of the excavator and high maintenance and replacement costs. In order to reduce this part of friction, тот PC60-7 track roller/ bottom roller has designed lubricant injection and retention channels in these moving parts, so that an oil film can be formed in the middle of each two moving parts during work to reduce wear. And that lubricant is butter, the technical name for grease.
How often should I beat the butter?
In order to make the digger parts work better, each DH220 Carrier roller has marked the maintenance time of each part on the instruction manual, and the butter is generally filled once every 5-8 hours during the working time, which means that the butter needs to be filled at least once during the work every day.
Can you use gear oil or oil instead?
Butter filling port from excavator rod cylinder pin
In fact, this is due to the characteristics of the excavator when working, these working parts of the digger parts are “low speed and heavy load”, and the sealing is not good, if the use of liquid lubricating oil in the work is easy to miss and can not form a good oil film. Поэтому, the shaft pin of the front-end working device of the Звездочка экскаватора PC300-6 Komatsu needs to be filled with grease, which has a long retention time and can be glued to each lubricating part to form an oil film to maintain good lubrication.
Finally, the benefits of butter to the digger parts are really great, the speed of wear of the pin and shaft sleeve will be much slower, and the working gap of these parts will be small. Excavators also work with much better noise and accuracy.