After the initial cut the cage is bent to the desired final shape using a die. After the parts are made the ball bearing is ready to be assembled.

How Are Bearing Balls Made Engineering360

The standard industry classification for the steel in these bearings is 52100 which means that it has one percent chromium and one percent carbon called alloys when added to the basic steel.

How ball bearings are made. Since the bearing has to stand up to a lot of stress it needs to be made of very strong steel. Bearing balls are the component of a ball bearing that permit smooth friction free rotary motion. They are typically manufactured out of steel but can also be made from other materials such as silicon nitride ceramic plastic or even glass.

Almost all parts of all ball bearings are made of steel. This process begins with the mold that is then injected with the melted plastic which is allowed to harden. The answer is a multi step manufacturing process involving machining heat treating grinding honing lapping and assembly.

Although there may be variations the following process applies to the vast majority of standard ball bearings produced today. Plastic cages are made differently using a process called injection molding. How are ball bearings made and how do they get the balls so round.