1. Fitted with specially designed semi-precision bearings.

2. The ball bearing tolerance is greater than a precision ball bearing. These rollers have the ability to withstand higher impact loads than other series rollers.

3. The environmental working conditions are broad. They can be used in both high and low temperature applications. 

4. Anti-static design.

5.Slightly higher noise levels compared with precision ball bearings.

6.Not suitalve for carring roller & tensioning position of belt conveyor.

7.Temperature range: - 20℃ ~ + 80℃.