In order to prolong the service life of the bearing box as much as possible, it is necessary to fill the mechanical oil inside the bearing to lubricate the bearing, but we found that the process of filling the oil is actually quite long, and the amount of oil used is also very large, so in this regard, our company developed a fuel-saving bearing box structure, and has applied for a utility patent. The technology is to change the structure of the box (add steps at the bottom of the box to lock the filled oil near the bearings at both ends; At the same time, increase the oil injection hole and move its position to both ends) to achieve the purpose of reducing the oil use and the oil injection time, and ultimately it is expected to reduce the oil use by 50% and the oil injection time by 75%.