The vibration of a centrifuge is one of the important indicators to measure the performance of a centrifuge. Vibration reduction can be achieved through active vibration reduction and passive vibration reduction. Active vibration damping means that in the design, the working speed of the centrifuge is far away from the critical speed of the rotating system. Passive vibration reduction refers to the use of various types of vibration isolators to separate the possible vibrations from the frame and foundation.

(1) Design the main shaft bearing housing as a flexible vibration damping type;

(2) The main shaft and the motor are flexibly connected.

(3) The entire drive system is flexibly connected to the frame.

Rubber shock absorbers can generally meet the vibration reduction requirements of high-speed centrifuges. When the structure of the shock absorber is determined, the greater the hardness of the rubber, the higher the critical speed of the system. Shock absorbers with too low hardness cannot meet the strength requirements and are prone to damage.

There are two types of shafts for high-speed centrifuges used in laboratories. One type of shaft is slender and has considerable flexibility by itself, thus enabling self-centering. Another type of shaft is relatively thick and short, with a very small bending deflection of the shaft itself. However, the multiple shock absorbers still keep the system's operating speed above the critical speed, so the system remains a flexible one. Although both are flexible systems, the difference in operation between a slender flexible shaft and a shaft with greater rigidity lies in; The automatic alignment of slender flexible shafts is mainly achieved by bending the shaft to make the rotor rotate around its center of mass, while for shafts with greater rigidity, automatic alignment is realized through the relative displacement of the flexibility of each component in the entire rotating system.