The following are the types of Bearings:

1. Sliding bearing : Sliding bearing consist of two metal plates, commonly stainless-steel plates, that slide relative to each other and hence makes room for translational movement and lubricating material between them as illustrated in figure below.

It is specified by ASSHTO that sliding bearing cannot be used unless the bridge span is smaller than 15m. This is because sliding bearing cannot be purely used if the bridge experiences rotation movement. However, the span restriction for sliding bearing utilization can be disregarded when it is used in combination with other bearing types.

2. Rocker and Pin Bearings : Rocker is an expansion bearing composed of curved surface at the bottom, which accommodate translational movement and a pin at the top makes room for rotation movement as illustrated in the figures in detail.

Pin bearing is a fixed bearing that make room for rotation movement through the application of steel pin. It has similar structure and component like rocker bearing apart from the bottom of pin bearing which is flat and fixed to the concrete pier, as can be observed below.

Both rocker and pin heading are primarily utilized in steel span structure. Rocker and pin bearing ought to be viewed as when the scaffold development is enough known and depicted, since such course can make spaces for both translational and rotational developments a single way in particular. These headings are probably going to endure decay and erosion, so it is important to lead normal review and upkeep.

3. Roller Bearing : Roller bearing can be utilized in the development of supported cement and steel span structure. There are two principle setups including single roller bearing which is made out of one roller set between two plates and various roller bearing that comprise of a few rollers introduced between two plates.

The previous as displayed in Figure can oblige both revolution and interpretation development longitudinal way and it is modest to make however its upward burden limit is restricted. In opposite, the last option as displayed in Figure given below can account for interpretation development just and turn development can be obliged in case rollers are joined with pin bearing. Various roller orientation are costly and support extensively huge vertical burdens. Ordinary assessment and recovery ought to be directed since roller bearing are defenseless to erosion and harms.

4. Pot Bearing:

As displayed in Figure, pot bearing comprises of elastomeric plate restricted in a pot, steel cylinder that is appropriately custom-made into the pot divider and level fixing rings which keeps elastomeric inside the pot.

Pot bearing can uphold extensive vertical burdens and it is regularly moved through steel cylinder to the elastomeric circle which is practically incompressible. All things considered, it is moved as the steel gun pushes toward pot divider. Translational development is restricted in unadulterated pot bearing that is the reason PTFE are acquainted with the sliding surface to make spaces for interpretation development.