What are the quality requirements for the new bearing of Perkins diesel generator set?

The bearing of diesel generator directly affects the operation reliability of the motor. In general, the intact bearing parts of the generator set have excellent appearance, no damage, no corrosion, no crack, and the roundness and surface roughness of the rolling contact surface are outstanding. When holding the inner ring and the outer ring, the rotation should be flexible and light, and the sound should be uniform without noise. So what are the quality requirements of the new bearings of diesel generator sets?

The new bearing quality requirements of diesel generator set are as follows: both ends of the bearing should be 0.05mm higher than the bearing seat; Bearing without sand hole, dumb sound, crack and coarse back; Excellent site location; Bearing oil hole as far as possible to be positive, its error shall not exceed 0.5mm; The thickness difference of two pieces of the same pair of bearings shall not exceed 0.05mm.

In addition, the selection of the new bearing size of the diesel generator set: when it is determined to replace the new bearing, the surface of the main shaft journal and connecting rod journal, the roundness and the taper should be restored to normal, and then according to the real size of the crankshaft journal and connecting rod journal to choose the new bearing suitable for it.

General crankshaft journal and connecting rod journal repair dimensions are standard and reduced size. The diesel engine has 6 stages: 0.25mm, 0.50mm, 0.75mm, 1.00mm, 1.25mm, 1.50mm, and each reduction of 0.25mm is one stage. There are 16 classes of gasoline engines: 0.125mm, 0.250mm, 0.375mm, 0.500mm, 0.625mm, 0.750mm, 0.875mm, 1000mm, 1.125mm, 1.250mm, 1. 375mm, 1.500mm, 1.625mm, 1750mm, 1.875mm, 2.000mm, each 0.125mm reduction is one level. Therefore, in the replacement of the new bearing, according to the existing size of the main shaft journal and connecting rod journal to select the corresponding bearing. That is, the journal is standard size, it is necessary to choose the standard size of the bearing, the journal is reduced, it should be based on the repair size of the journal to choose the same bearing.

Jiangsu Meao Power Technology Co., Ltd. focuses on the development and manufacture of diesel generator sets, and has accumulated rich experience in manufacturing and service in this field. As a professional generator manufacturer, MEAOPOWER attaches great importance to product development, innovation and service quality, and maintains close strategic cooperation with famous domestic and international enterprises such as Cummins, Perkins, Doosan, Yuchai, Weichai, Shangchai, Wuxi Wandi, Lillesomer, Stanford, Marathon and so on.