L28/32 Diesel Engine Parts Connecting Rod Bearings

The connecting rod bearing is a bushing, the connecting rod bearing is a bearing bush, the bearing bush is a semicircle, and the bushing is a full circle. The bearing bush is generally used on the big end, the bushing is generally used on the small end, the connecting rod bearing is the middle part connecting the connecting rod head and the crankshaft, and the connecting rod bushing is the middle part connecting the small end of the connecting rod and the piston pin. Rod bearing bushes generally need to be coated, and connecting rod bushings generally have no coating. The connecting rod bearing generally has no oil grooves and oil holes, while the connecting rod bushing generally has oil grooves or oil passages. Both the bearing bush and the bushing belong to the category of sliding bearings.

Connecting rod bearing:

The connecting rod bearing bush of marine diesel engine accessories includes the upper connecting rod and the lower bearing of the connecting rod, which are installed at the connecting part of the connecting rod and the crankshaft, and play the role of wear resistance, connection, support and transmission. An oil groove is arranged on the inner cylindrical surface of the upper shell of the connecting rod along the circumferential direction, the central angle corresponding to the oil groove is 80-120°, and the wall of the connecting rod shell of the oil groove part is provided with an oil passage.

By setting an oil groove with a reasonable arc length on the connecting rod bush, it is ensured that the oil can supply oil to the piston at the most appropriate timing and time during the working process of the engine, so as to ensure good cooling of the piston and avoid wear and damage to the cylinder; The reasonable arc length of the oil groove can ensure the oil supply amount of the oil, which can not only ensure reliable cooling, but also avoid the waste of oil and the negative impact of excessive oil on the operation of the engine; It can be assembled in a reasonable position, so that the oil groove of the connecting rod bush avoids the heavy load force area, so as to ensure that the wear of the connecting rod bush is small during operation.