In addition to maintaining high-speed refrigerated centrifuges, it’s crucial to understand the core component—the motor.

　　 High-speed refrigerated centrifuge It is also a common piece of equipment in research and experimental institutions, primarily used for separating substances that are relatively difficult to separate.

　　For example, the separated components from a common high-speed refrigerated centrifuge have the following two characteristics:

　　1. A suspension with a low solid content.

　　2. Solid-liquid mixtures with low concentration, small particle size, relatively high viscosity, and a small specific gravity difference between the two phases.

　　Since these substances belong to a class that is difficult to separate, they place relatively high demands on speed. Moreover, due to the influence of certain additional conditions, temperature requirements may also come into play. This is why high-speed refrigerated centrifuges have emerged.

　　To meet experimental requirements, high-speed refrigerated centrifuges inevitably need to increase their rotational speed, and this increase in speed directly affects the motor.

　　Therefore, during the operation of a high-speed refrigerated centrifuge, motor maintenance is extremely important. For example, a common maintenance practice is to replace the motor’s carbon brushes promptly after they have been used for 3,000 hours, to prevent wear on the commutator.

　　Of course, in addition to maintaining the motor of a high-speed refrigerated centrifuge, it’s also crucial to understand the issue of motor overheating and take preventive measures in advance to avoid excessive heating. Below is a brief explanation of several common causes of motor overheating:

　　1. It’s possible that the high-speed refrigerated centrifuge’s rapid rotation speed causes its motor to heat up easily. If you notice that the motor of the high-speed refrigerated centrifuge is getting hot, you should pay close attention to its operation—this could very likely be related to overheating of the motor bearings.

　　2. Centrifugal overload or overloading could be due to issues with the cooling fan, as well as heat generated by mechanical friction. It’s also possible that the bearings in high-speed refrigerated centrifuges are not genuine. Therefore, users must choose authentic, genuine bearings. Moreover, some brands may differ in origin, which could result in variations in quality.

　　3. Pay close attention to the lubrication of the machinery and choose a high-quality lithium-based grease for high temperatures. The quality of the lithium-based grease is also a major factor contributing to bearing overheating.

　　4. Whether the concentricity of the high-speed refrigerated centrifuge’s spindle is accurate is crucial. In most cases, people tend not to pay much attention to concentricity. If the spindle’s concentricity is significantly off, it can cause the bearings to overheat.

　　The above are some of the reasons why the motor of a high-speed refrigerated centrifuge may overheat. There are also several secondary factors—such as failure to pay attention to balance during operation—that can cause the motor to heat up. Therefore, in addition to selecting a high-quality centrifuge, it’s important to pay attention to your daily usage habits as well.

　　Alright, given space constraints, today I’ll briefly introduce the basic technical knowledge of high-speed refrigerated centrifuges. If you’d like to learn more about high-speed refrigerated centrifuges, please stay tuned to Shanghai Luxiangyi Centrifuge Instrument Co., Ltd. The company will periodically publish technical articles on various types of centrifuges!