What is a pillow bearing?

The pillow bearing is a bearing type that is located in a cast iron mounting bracket that doubles as an outer housing for the bearing. Usually made of gray cast iron, a pillow block case has a provision that allows the housing to be comfortable to approach. The inner supporting component of the pillow bearing is usually a soft metal material, such as white metal, while the outer case can be divided or a single housing. This deposit is primarily designed for low-term situations with minimal load, it is also designed for use in a clean environment in the industrial environment.

While the term is often used in certain parts of the world, pillow bearing and plummer bearing are not the same device. Unlike the bearing of the pillow block, the Plummer block does not contain an inner bearing. The plummer block is a bearing housing that is designed to work at higher loads and in corrosive industrial environments. One common function of both cases is that the case is designed so,To attach to the stable surface by means of mounting holes of castings at the base of the body.

It is used to support the shaft spinning and the pillow bearing provides a stable and safe case for often expensive bearing. The special seal, located at the entrance and outputs from the bearing housing, protects the bearing from contaminants such as dirt and dust. The split case is often used to support easier bearing changes and much easier to maintain the shaft, while in some applications, only the coverage or one -piece housing is also used. In some applications, in areas that offer less access and lower shaft speeds, the style of a non -fold pillow bearing is used. This is usually due to a less common maintenance requirement with a slower shaft rotation.

Using the pillow block of the bearing on the shaft spinning, the working cycle of the shaft increases significantly. Prevent the bearingsThe distortion and fluctuations of the shaft during rotation, thus damage any connecting trade unions and weaken the structure of the steel shaft. While the modern pillow block uses a replaceable soft metal bearing shell inside a litis or cast steel bearing, early versions of the device sometimes use a poured bearing inside the housing. These types of bearings were often short life deposits and required frequent services.