Marine bearing bush is the part of the contact between the sliding bearing and the journal, the shape is a tile-like semi-cylindrical surface, very smooth, generally made of bronze, antifriction alloy and other wear-resistant materials, this extension into the ship introduces the common problems of Marine bearing bush cause analysis.
1. If the large load is running at cold start, the oil is still at low temperature and has not been lubricated to the Marine bearing, but at this time, the surface of the Marine bearing has formed instantaneous high temperature due to the large load, causing the metal to melt and hug each other.

2. The clearance between Marine bearing bush and journal is too large, and the oil film pressure is small; Or when the clearance between the Marine bearing bush and the journal is too small and the bulge of the Marine bearing bush is too high, the alloy at the tile mouth is deformed.

3. Do not understand the type of oil required by the operation of the Marine bearing bush, indiscriminate use of various oil additives, damage the molecular structure of the machine, resulting in the oil flow rate in the oil passage is too slow, too thin, reduce the lubrication function, resulting in Marine bearing lock.

4, long-term do not change the oil, the use of poor quality oil, will also lead to "burn tile hold shaft".