Introduction to Marine diesel engine parts: Knowledge of the function of bearing sleeves

The bushing refers to the sleeve on the propeller shaft or stern shaft. Bearings are components that play a role in fixing and reducing the friction coefficient of loads during mechanical transmission. The similarity between shaft sleeves and bearings is that both bear the load of the shaft.

Bearing sleeves are mainly applied in industries such as machinery, printing and dyeing, papermaking, chemical engineering, aerospace, coal, petroleum, automobiles, construction machinery, and metallurgy. It belongs to the category of sliding bearings and operates under sliding friction. It rotates relative to the shaft and generally requires an auxiliary lubrication system to work.

The DK28 diesel engine parts, and the difference between the two is that the bushing is an integral structure, and when rotating, it is the relative motion between the shaft and the bushing. The bearing is of a split type. When it rotates, the inner and outer rings of the bearing move relatively to each other. But essentially, a bushing is actually a type of sliding bearing. The bearing bush is equivalent to the outer ring of a sliding bearing. The bushing is integral and moves relative to the shaft, while the bearing bush is fragmented and rotates relative to the shaft.