| Have you ever wondered how cars and other | | | | linear motions are called linear bearings. |
| motor vehicles run smoothly and quietly? As a | | | | These bearings allow motion in a straight |
| child, I have always been in awe of how these | | | | line. An example of linear motion is the |
| powerful machines work. Later on, I | | | | pulling and pushing of a drawer. Rotary |
| understood that these machines run smoothly | | | | motions, on the other hand, involve one |
| with the help of smaller machines called | | | | direction rotation and oscillation, wherein |
| bearings. Bearings are important to the | | | | the motion goes only through a part of a |
| machines we use everyday, for without them, | | | | cycle, such as in the case of a wheel. Rotary |
| we would need to frequently replace broken | | | | bearings, therefore, allow motions which are |
| machine parts due to the wear and tear of | | | | concentrated on a center, like a wheel on a |
| friction.A bearing is a tool used to reduce | | | | shaft.Many applications use rotary bearings |
| the friction that occurs in machines. | | | | such as machine shafts, vehicle axles, and |
| Friction is a kind of force which opposes the | | | | clock parts. The sleeve bearing, a simple |
| movement of a surface in sliding or rolling | | | | cylinder which is inserted between the wheel |
| motion over another surface with which it is | | | | and its axle, is the most basic rotary |
| in contact. Bearings bear the frictional | | | | bearing. The roller bearing followed, wherein |
| force which is set up by the moving surface | | | | the sleeve is replaced by a number of |
| of a machine part.Bearings are categorized | | | | cylindrical rollers, each behaving as a |
| according to how they operate and the motions | | | | single wheel.The operation of bearings |
| that they allow. The two common motions are | | | | includes six common principles. |
| linear and rotary. Bearings which allow | | | | |