Rolling-element bearings can be manufactured in two forms: ball bearing slides and roller slides. The former one is the most simple type. They are also called the ball slides. They can be applied in various places such as the manufacturing industry, the electronics and construction industries. Besides, they can also be used in the furniture industry. For example, a ball bearing drawer slide is just widely used in this industry. The later one is also known as crossed roller slides. Like the former one, they can also be used in many places including clean rooms, vacuum environments, and automation machinery, etc.
Now, it's time to see the second category, that is the plain bearing. To some extent, this kind of product is quite similar to the first type except that they slide without the use of ball bearings.