Roller Bearing Number Comparison Table
Roller bearings are a type of bearing that uses rolling elements that rest between two concentric internal and external raceways. They typically run on a lubricant, such as oil, to prevent wear and corrosion. The rolling elements are typically cylindrical in shape and are usually constructed from steel or other stronger materials. When it comes to selecting the right roller bearing, it’s important to know the roller bearing number and what it means.
This article is going to provide a comparison table of different roller bearing number codes, so you can easily identify the specifications of the most common roller bearings.
Metric Bearing Number System
The metric bearing number system consists of a letter, a number, and two letters. The letter represents the basic bearing type, such as R for radial or A for angular contact. The number represents the size of the inner diameter. The first letter of the last two can represent the cage material and the second letter may represent the type of seal. For example, a bearing with the number 6204-2RS would be a radial bearing with an inner diameter of 20 mm and a rubber seal on both sides.
Inch Bearing Number System
The inch bearing number system consists of two letters and four numbers. The first letter represents the type of bearing and the second letter the type of cage material. The first two numbers represent the inner diameter, divide the entire number by 10 to get the measurement in inches. For example, a bearing with the number 6204-2RS would be a radial bearing with an inner diameter of 20/10 = 2 inches. The last two numbers represent the outer diameter. The last letter may also represent the type of seal.
Roller Bearing Number Comparison Table
Number Type Internal Diameter (mm) External Diameter (mm) Cage Material Seal 6200 Radial 10 30 Steel No 6301 Angular 12 37 Steel No 6203 Radial 17 40 Steel No 6001 Angular 12 28 Steel Rubber 6201 Radial 32 10 Steel Rubber 6002 Radial 15 32 Steel No 6802 Radial 15 24 Steel No 6903 Angular 17 30 Steel Rubber 6304 Radial 20 52 Steel No 6203 Radial 17 40 Steel Rubber
Conclusion
In summary, knowing the roller bearing number and its respective parts is essential when selecting the right bearings for your needs. This article has provided a comparison table for different roller bearing number codes, so you can easily identify the specifications of the most common roller bearings. With this information in hand, you can make an informed decision when selecting the right bearing for your application.
