Currently used common problems rolling cylinder diesel engine main bearing manufacturers faced, but also weaknesses in the structure of the main bearing type. To increase the service life of rolling the main bearing, in addition to improving manufacturing quality bearings and related parts, to improve the lubrication conditions, the most direct and effective way is to change the bearing materials, such as vacuum-deoxy-bearing steel. But the use of new materials bearing expensive cost increase.

Increase the cleanliness dust intrusion, iron and other bearings are an important cause of early bearing wear. To improve the reliability of the bearing, it is necessary to improve the cleanliness of the bearing, the bearing lubrication conditions improve. Increase the cleanliness of the bearing includes two aspects: First, the cleanliness of the bearing assembly, and second, automotive lubricants lubricant cleanliness.

The main factors affecting the cleanliness of the bearing assembly are: Bearing cleaning is not complete, bearing in transmission and assembly process to be contaminated by dust particles scene, the pressure bearing and operator of one of the clamp hands dirty and so on. No special protection adhered lubricating surface dust, metal chips when the diesel engine can cause abrasive friction, resulting in early wear and reduce bearing performance. Therefore, improving the cleanliness of the bearing, the first on-site management to start from. Cleanliness is an effective measure to control the whole of early bearing wear prevention.