Assembly of stainless needle bearings

Stainless needle bearings are mechanical parts with high precision but are easily damaged. Needle roller bearings can be protected by mechanical seals of needle roller bearing housings or other forms of seals. The use of these sealing parts takes up a lot of volume space and also affects the use design of the product. So people gradually moved the sealing device to the needle bearing, and continued to optimize. Nowadays, needle roller bearings with dust cover and sealing ring are very common. Needle roller bearings with sealing structure are still increasing, and a lot of materials have been added. Today, the editor mainly talks about the assembly requirements of stainless steel needle roller bearings.

Stainless needle bearings with sealing device are mainly used for axles and wheel axles used in railway semi-vehicles, automobiles and other transportation vehicles. The seals of these stainless needle bearings are of various structures and have different characteristics for different applications.
When assembling stainless steel bearings, in addition to the requirements for the amount of grease injection, there are also strict regulations on the requirements for sealed packaging. Generally, the seals of stainless needle bearings are rubber seals with steel skeleton, and they are divided into inner and outer seals. Moreover, stainless needle bearings usually require a long service life and are maintenance-free. The above requirements, in addition to requiring all relevant parts to be qualified, good assembly quality is also an important factor affecting the sealing device.

The sealing devices of stainless needle bearings are also widely used in other different occasions. For example, stainless needle roller bearings in sealed rolling mills are equipped with sealing devices on both sides of double and four-row needle roller bearings. The needle bearings are pressed and positioned together and can be replaced.