The most general Bearing Housing are constructed and designed as a single piece. Cast iron is used for casting these housings. After the casting is over, to provide a perfect flat mounting surface, the bases of the housings are machined. To provide the exact fit with the insert bearing, the inner diameters of the housings are also machined. The housing that is made of cast iron gets greater applicability and also get high rigidity. This housing are strong enough to suit for any type of application. For very heavy applications, other housing materials apart from the cast iron are also used for making housings. These housings are used for the special applications.

Another one-piece designed housing, is made of malleable cast iron. These housings are not very rigid and therefore, such housings are less susceptible to fracture than gray iron housings. Where the shock loads are present, in these applications malleable cast iron housings are applicable.

Another type of housings are called Pressed Steel Housings, and these housings are stamped or pressed, of plain carbon steel. These housings are the least rigid then the other two type of housings, which have been mentioned above. In high duty applications, the presses Steel Housings are used.

The Press Steel Housings are designed as tow- piece housings. Between the two sections, the insert bearing is cradled. The bolts that attached the housings to the applications, help in holding the assembled units intact. Although, the bases of these housings are not machined, but these provide relatively strong and stable foundation for the insert bearing along with the most economical and lightest possible housing system. Sometimes, additional rubber tires or grommets are required in the applications of the Pressed Steel Housings around the insert bearing's O.D. This Grommet is used for reducing the noise.

Cast Stainless Steel Housing is another kind of housing. The main purpose for making these housings is to prevent the corrosion against other contaminants and exposure to liquids. In food and beverage industries, these housings are mainly used. In these industries, the equipments have to keep hygienic, and therefore, these equipments are washed frequently. So, to prevent the corrosion, these housings made of stainless steel is considered the best option. Sometimes, these housings are also referred a s “Wash Down Units”.

Molded Plastic Housings are another type of housing. These are the alternatives of the Stainless Steel Housings from economic point of view. These housings are suitable in the moist environment. These housing provide very good water resistance and also prevent the corrosion.