2009年2月26日 星期四

Ball Bearings, EMQ Bearings

Bearings Manufacturers Directory including ball bearings, Auto bearings, roller bearings, thrust bearings.etc.

Bearings Suppliers Directory including Automotive Bearings, Ball Bearings, EMQ Bearings, High Precision Bearings, Linear Montion Bearings, Needle Bearings, Roller Bearings, Self-lubricating Bearings, Sleeve Bearings, Special, Non-standard Bearings, Spherical Bearings, Spherical Plain Bearings, Thrust Bearings.


Types of Bearings

Bearings are relatively small components placed between moving parts to reduce friction with movement. They can be made of many different materials and can be of various sizes and designs. Bearings are used in various applications; they can be found in engines, assembly lines, fans, hand tools, and roller-skates.


There are two classifications for bearings: linear and rotary. These classifications are based on the motions for which they are designed. A linear bearing moves in a straight line and is used for pushing and pulling motions, like a drawer opening and shutting. A rotary bearing is designed for radial motion, like that of a wheel spinning. Rotary bearings are also commonly referred to as thrust bearings.


Bearings are usually small enough to hold in the palm of a hand, but they can be as large as ten feet in diameter. Bearings this large are used in places like hydroelectric power plants. Ball bearings have been used for many years, and their low cost ensures that they will continue to be used in the future.


Types of Bearings

Angular Contact Ball Bearings are a type of radial bearing that are designed so that the contact angle between the races and the balls is created when the bearing is in use.


Automotive Bearings describe many types of bearings used for automotive purposes.

ABEC Bearings are also sometimes called Precision Bearings; these bearings are rated on a scale from 1 to 9 based on precision standards.


Bearings are components that are used in between moving parts.


Ceramic Bearings are made of steel rings and ceramic balls (instead of steel).


Counter bored ball bearings have one race shoulder turned and ground away to facilitate an assembly with a greater number of balls. Can also be a non-separable Ball Bearings with one side of the raceway removed from either or both rings to assist manufacturing assembly; normally the outer ring is counterbored.


Deep Groove Ball Bearings are a type of radial bearing that have a cage assembly, which separates the balls and is used for radial and axial loads.


Linear Montion Bearings move objects that need only be moved in one direction and possibly back to an original position. (Linear Bearings)


Maximum capacity bearings allow for more balls to be loaded into the bearing using the filling notches.


Miniature Ball Bearings are a smaller bearing, typically under 10mm bores. A single row style of bearing capable of handling smaller torque loads.


Precision Bearings are composed of materials that are subjected to severe stress reversals.


Axial and Radial Ball Bearings move in both directions and can handle large loads. The most widely used and recognizable ball bearing.


Roller Bearings can handle higher load capacities than standard ball bearings. These consist of cylindrical rollers as the motion component of the bearing..


Self-aligning Ball Bearings consist of two rows of balls and a spherical raceway in the outer ring. These bearings are known for limited problems with misalignment.


Skate bearings are used for inline skates and skateboards. These utilize balls as the motion component for the bearing.


Steel ball bearings are made of steel materials.


Thrust Bearings are designed to handle just thrust and minimum amounts of it, such as in the case of a Lazy Susan or Barstool.


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