首先是轴承润滑不当相关导致的轴承过热。比方轴承缺油或许缺油脂，油蜕变、油脂干固，以及润滑油脂过多、品种不适宜、污染等都或许导致轴承过热。因而要根据实际情况选用适宜、适量的润滑油脂。
The first issue is the overheating of bearings caused by improper lubrication of the bearings. For example, bearings may lack oil or grease, oil metamorphosis, grease dryness, as well as excessive lubricating grease, unsuitable variety, pollution, etc., may cause bearings to overheat. Therefore, it is necessary to choose appropriate and appropriate lubricating grease according to the actual situation.
轴承过热
Bearing overheating
第二个是轴承的空隙问题。轴承空隙过大会降低机器的运转精度，发生剧烈振动和噪音，甚至烧瓦；空隙过小摩擦热不易被带走，导致过热，同时一旦有杂质较进入空隙，更容易呈现“抱轴”现象。因而轴承的空隙要适宜。别的轴承的预紧力过大也会导致轴承空隙变小，从容引起轴承过热，需求适当放松轴承的预紧力。
The second issue is the clearance of the bearings. Excessive bearing clearance can reduce the operating accuracy of the machine, cause severe vibration and noise, and even cause tile burning; If the gap is too small, the frictional heat is not easily carried away, leading to overheating. At the same time, once impurities enter the gap, they are more likely to exhibit the phenomenon of "holding the shaft". Therefore, the clearance of the bearing should be appropriate. Excessive preload of other bearings can also lead to reduced bearing clearance, causing overheating of the bearings. Therefore, it is necessary to appropriately relax the preload of the bearings.
三、传动衔接的方式问题。像螺杆真空泵与电机联轴器的安装空隙操控不对、没有对中，皮带传动的话，皮带拉的过紧。因而联轴器要对中，空隙操控与皮带的松重要适宜。
3、 The problem of transmission connection method. The installation gap between the screw vacuum pump and the motor coupling is not properly controlled or aligned, and if the belt is driven, the belt is pulled too tightly. Therefore, the coupling should be centered, and the clearance control and belt looseness are important and appropriate.
四、压力不平衡导致发生的转子轴向力问题。比方轴承轴端的密封失效，阀板开裂走漏等，都会导致转子两边压力不平衡，转子发生轴向力，也或许加剧轴承负荷，导致轴承过热。
4、 The axial force problem of the rotor caused by pressure imbalance. For example, sealing failure at the bearing shaft end, valve plate cracking and leakage, etc., can lead to uneven pressure on both sides of the rotor, axial force on the rotor, and may also exacerbate bearing load, leading to bearing overheating.
五、轴承本身的问题。像精度、硬度不行，不仅仅带来温升的问题，还或许提早损坏，需求替换合格的轴承。
5、 The problem with the bearing itself. Poor precision and hardness not only cause temperature rise issues, but may also lead to early damage, requiring replacement of qualified bearings.
六、轴承生锈、损坏。像轴承如果生锈，有铁屑等污染物，以及轴承滚动体、保持架损坏等，也会导致轴承过热，需求及时替换。
6、 Rust and damage to bearings. If a bearing rusts, contains pollutants such as iron filings, and the rolling element and cage of the bearing are damaged, it can also cause the bearing to overheat and require timely replacement.