Ball Bearing
(21)
EMQ Bearing
(6)
Bicycle Bearing
(4)
Gear Box Bearing
(6)
Textile Bearing
(4)
Bearing Parts
(10)
Ball bearings are used in virtually every type of machine, motor and transportation mode. They are one of several types of rolling bearing that include cylindrical roller bearings and tapered roller bearings. Ball bearings can handle moderate radial and thrust loads and extremely high shaft velocities. Ball bearings come in every size from tiny for watches and other instruments to enormous for huge construction equipment. Their versatility, reliability and relatively low cost make them the most popular of all rolling bearings.
Ball bearings are a type of bearing which use balls to separate the moving components. Bearings allow moving parts to work and bear weight. Ball bearings are used in all sorts of common products including inline skates, luggage wheels, and computer hard drives. Giant ball bearings are even used in some kinds of earthquake-proofing for modern buildings.
Bearing Types
There are two basic types of mechanical bearings used in machinery: sleeve bearings and rolling bearings. Bronze sleeve bearings are simple and inexpensive, but tend to be limited in the shaft velocities they will support. They also have considerable coefficients of friction that may consume a large proportion of the energy available to turn the shaft. Ball bearings, however, are almost limitless in the velocities they will tolerate as long as their lubrication is sustained.
Bearing Components
Ball bearings consist of three main sections, all of which are uniform and hardened for long wear: The inner bearing race fits snugly on the turning shaft. The outer race is a collar that fits snugly inside the bearing holder bore. Finally, there is a single or double row of uniform balls that may be touching one another or spaced at intervals between inner and outer races and retained by a ball cage. These bearings will last almost indefinitely if sealed, kept very clean and lubricated with a high film strength bearing lubricant.
Applications
Ideal applications for ball bearings are industrial machines that present both radial and axial loads, and moderate to high shaft velocities. On vehicles, they are preferred for moderate load bearings for motors, gear cases, and turbochargers. Modelers often use miniature ball bearings to extract the most performance from their cars, boats and planes.
