A thrust bearing is a smoothing agent used in mechanical engineering. A bearing is used to reduce the friction between any two bodies or surfaces. This means it reduces the thrust or axial load of a machine and increase its resistance to shock and vibration. Thrust bearings are used in engines with both rotary and linear movements
A ball thrust bearing is one of the more popular varieties of thrust bearing. It is typically used in a ball bearing and is supported by a ring. It is ideally suited for machines in which there is a low level of radial load. The bearing has a series of small rollers placed in such a way that all its axes sit on radial lines from the middle of the bearing. When the machines are used, the rollers of the ball bearing rotate, reducing friction in the engine.
Tapered Thrust Bearings
Tapered thrust bearings are another type of thrust bearing. Tapered bearings have many rollers positioned in a tapering fashion. The axes meet at a fixed point on the bearing. The diameter of the narrow and wide ends and length of the bearings must be precisely placed so that the bearings do not skid off the axis when this requirement is not met. Tapered thrust bearings are used on the wheels in an airplane or a car. Tapered thrust bearings are more versatile and can handle greater axle loads than ball bearings. However, tapered bearings are more expensive than ball thrust bearings.
Fluid bearings are bearings in which the axial pressure or thrust is held by a wafer-like layer of liquid, which gives the machine a very low degree of drag. Fluid bearings were developed in 1905 by George Mitchell.