When the bearing exceeds the normal temperature in operation, the reasons may be as follows:
1、轴承与轴颈贴合不均匀或接触面过小,单位面积上的比压过大,这种情况大部分发生在新机器试运转或换新轴瓦后。
1. The joint between bearing and journal is uneven or the contact surface is too small, and the specific pressure per unit area is too large. Most of this happens after the new machine is commissioned or the bearing bush is replaced.
2、轴承偏斜或曲轴弯曲、扭曲。
2. Bearing deflection or crankshaft bending and twisting.
3、轴瓦质量不好,润滑油质量不符,或油路
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堵塞。齿轮油泵供油压力太低,以及供油中断,造成轴瓦缺油,产生干摩擦。3. The quality of bearing bush is not good, the quality of lubricating oil is not consistent, or the oil circuit is blocked. The oil supply pressure of gear oil pump is too low, and the oil supply is interrupted, resulting in oil shortage of bearing bush and dry friction.
4、轴承有杂物或润滑油过多,或润滑油太脏。
4. The bearing has sundries or too much lubricating oil, or the lubricating oil is too dirty.
5、轴瓦有不均匀的过度磨损。
5. The bearing shells have uneven excessive wear.
6、空气压缩机安装时主轴与电动机主轴联轴器没有找正,误差太大,致使两轴倾斜。
6. When the air compressor is installed, the coupling between the main shaft and the motor main shaft is not aligned, so the error is too large, causing the two shafts to tilt.