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Application notes for high speed rotating joints (YC)

Application notes for high speed rotating joints (YC)

Author Qing Bang; Zhu Xun;

Some time ago, I talked about some basic knowledge of high speed rotating joints. There are some aspects that have not been finished because of the space and time. Now let's talk about the need to pay attention to the application of high speed rotating joint. Hope to help you.

Bearings for high speed rotating joints. The selection of bearings for high speed rotating joints is required.

First, the smaller the beads, the better. Bearings with high speed are beads with small bearings. Therefore, we should choose the beads as small as possible in the selection of the bearings of the rotary joint. Of course, according to the type of rotary joints specifications. If the bearing bead is too small and the bearing thickness is not enough, the stability of the rotating joint is not enough when it runs at high speed. You know, it's all supported by the bearings. Therefore, the first condition of bearing selection is that the bead of the bearing is smaller as long as the stability of the rotating joint is not affected. The current use of more is the 600 series.

Second is the butter of the bearing. High speed rotary joint bearing oil must be high temperature resistant. Bearings produce temperature at high speeds. If the oil melts and flows out, resulting in lack of lubrication of bearings, natural bearings will be stuck (commonly known as burning). The function of the rotary joint is lost. But there is not much oil. If the oil is too much, it will cause resistance to the rotation of the bearing. More easily broken bearings. Therefore, the high speed rotating joint selection of bearings must be a high temperature resistance of a small amount of grease in it, but it will not melt.

Third is the sealing resistance, the smaller the better. The rotating joint also generates temperature during the high speed operation. The high temperature will affect the bearings, but also easy to seal damaged. Therefore, the sealing surface of the seal to be hard, but also to do a very good mirror treatment. Of course, it also contains springs for boosting seals. The spring pressure is great, and the seal will wear fast. And it will increase the friction resistance. But the spring pressure is small, and easy to cause leakage. Therefore, the spring must be suitable for the rotation of the joint requirements.

Fourth rotating joint installation, we must pay attention to safety. The normal rotation of the rotating joint is the opposite direction of the rotation of our equipment. If it is rotated, it always falls off easily. In this case, it is better to install fastening screws. Because it is high-speed rotation, in order to prevent other aspects of security incidents, it is best to bring safety protection cover outside the swivel joint. Or install the swivel joint retaining nut. Prevent children from lifting and hanging up dangerous signs.


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