What is ball bearing ?
Ball bearings are types of rolling-elements bearing , that transmit loads ,decrease friction and position moving machine parts , when facilitating motion . they decrease surface contact and friction across moving plans with using separate two “races” or bearing rings . resemble to flat surface that rub against each other , coefficient of friction is reduce by the rotating motion of the balls .
Ball bearing design
Ball bearings contain of four major parts , which are 2 races , the rolling elements and the ball separator . angular contact ball bearings and radial ball bearings contain an inner and outer ring . angular contact ball bearing and radial ball bearing are designed to carry loads that are oriented in a vertical direction to the axis of rotation known as radial loads .
The type of load bearing that is applied to the bearings
Radial: this type of bearing places the axis in the center during the change of rotation and load and bears the radial load, this type of bearing should not show resistance against rotation, if this happens, the system will reduce the efficiency. will be Among the types of these bearings, deep groove and self-adjusting bearings and bearings and sliding bearings can be mentioned.
Axial: these types of bearings bear the axial load, these types of bearings are also called round bottom bearings, when the axial force is low, these types of bearings can be used.
Axial radial: in addition to bearing radial load, this type of bearing can also bear axial load, which can be referred to single-row-double-row angular contact bearings, in some cases, single-row angular contact bearings as Two of them are used face-to-face or back-to-back.
Materials used balls in ball bearing
The material used to produce rolling ball bearing balls vary widely and is always mostly focused on the ring’s materials .
This gives declaration of the harmonization of the interplay of cage , outer ring , and inner ring in the system . this is mostly important when it comes to heating or cooling of the bearing in the application .