Various Aspects of Rollers for Bearings
Posted by brhhousing on August 2nd, 2016
The massive industrial revolution has increased the demand of the roller bearing housing old bearings'. Bearings are device used to facilitate the smooth movements and to reduce friction. They have been found to exist in myriad types from as long as the ancient times where bearings were used by people in the construction of the pyramids in Egypt. Today, different types of bearings are manufactured to fulfil the needs of different machines; big and small. Cylindrical roller bearings, needle rollers and pins are a few of the many different bearings found in the present industrial world.
Roller bearings are designed in response to the needs of heavy machineries and extensive industrial applications. It caters to the needs of supporting heavy radial load. It is basically designed to spread the load over a larger area. It has the power to handle heavy loads and is appropriate for use in high speed machines. Roller bearings are made up of an inner ring, outer ring, a cage and rollers. The contact between the outer and inner race is not a point as in a roller bearing but, a straight line and this characteristic feature of roller bearings helps to spread the load over a broader surface. They are available in varied shapes and sizes and in different configurations. Conveyor belts utilize this type of rollers for bearings.
As the very name implies, this type of roller bearings is cylindrical in shape and is the most common forms of roller bearings. It constitutes a pair of rings with bearings in between. The cylindrical shape allows for the easy distribution of load across a wider surface area. They have the capacity to hold heavy radial load and are applicable for use in high speeds. There is a double row cylindrical roller which has high radial rigidity and is chiefly used in precision machine tools. Cylindrical rollers are either made up of pressed steel, machine brass or molded polyamide.
When small cylindrical rollers are used, they come to be known as needle roller bearing housing manufacturer . The prime function of these rollers is to reduce friction of a rotating surface. Unlike the roller bearings needle roller bearing has a large surface area in contact with the outer bearing surface. Needle bearing rollers constitutes an inner race, a needle cage, needle rollers and an outer raceway. They are widely used in pumps, compressions, transmissions etc. Drawn cup, caged roller, thrust roller and precision race are few of the many varieties of needle rollers available for the industrial sectors today.
The pin type is designed for carrying high capacity load and is commonly used in aerospace, heavy industries, large load automotive etc. There are basically two rings at the end of the rollers. Pins are made from such materials as C45, C60 and stainless steel.
