Self-Aligning Ball B. SKF 2205 ETN9

The SKF 2205 ETN9 double-row self-aligning ball bearing (25x52x18 mm) compensates for misalignment and supports shafts within a temperature range of -30 to +120 degrees.

The SKF 2205 ETN9 double-row self-aligning ball bearing is designed for shafts with a diameter of 25 mm and primarily accommodates radial loads. The hollow spherical raceway of the outer ring allows the inner ring to self-align, enabling the rolling bearing to compensate for misalignment and shaft deflection during operation. The component is made of 100Cr6 rolling-bearing steel and has the standard tolerance class P0/PN or ABEC 1. It is used where misalignment occurs between the housing and the rotating shaft.

In which applications does the 2205 ETN9 self-aligning ball bearing compensate for misalignment?

Designs featuring long shafts or flexible housings benefit from this bearing’s self-aligning design. The rows of balls oscillate freely within the outer ring, enabling the bearing geometry to compensate for misalignment and skewing without generating edge pressures. Typical applications can be found in mechanical engineering for shaft guides, as well as in industrial drives and flexible mounting arrangements. Thanks to its compact dimensions of 25x52x18 mm, the component can be easily integrated into existing housing structures.

What are the key features of the ETN9 polyamide cage?

The polyamide material gives the cage a low mass and elastic damping properties under impact loads. Compared with heavy metal cages, the ETN9 design reduces friction losses and promotes smooth running. When designing, please note the permissible temperature range of -30 to +120 degrees. As this is an open roller bearing without integrated seals, you must protect the raceways from dirt and lubricant loss via the housing design.