Self-Aligning Ball B. SKF 2204 ETN9

The 2204 ETN9 double-row angular contact ball bearing compensates for angular misalignment caused by shaft deflection and measures 20 × 47 × 18 mm in an open design with a polyamide cage.

The 2204 ETN9 self-aligning ball bearing from SKF is a double-row radial ball bearing made from standard 100Cr6 bearing steel with a cylindrical bore. Thanks to the shared spherical raceway in the outer ring, the bearing automatically self-aligns in the event of misalignment. This design is primarily used where elastic shaft deflection or manufacturing-related misalignment between the bearing seats needs to be compensated for. With a bore of 20 mm, an outer diameter of 47 mm and a width of 18 mm, it complies with compact standard dimensions.

What is the 2204 ETN9 self-aligning ball bearing suitable for?

This rolling bearing is suitable for industrial bearing applications where misalignment of the housing bores or elastic deflection of the rotating shaft needs to be compensated for. It is used in mechanical assemblies and drive systems subject to predominantly radial loads and moderate axial forces. The open design, without integrated sealing washers, allows for flexible lubrication with grease or oil directly via the surrounding housing structure.

What are the advantages of the polyamide cage in the ETN9 design?

The manufacturer-specific suffix ETN9 denotes a lightweight polyamide cage and an optimised internal geometry of the rolling elements. The plastic cage reduces the rotating masses of the rolling element guidance and promotes quiet running with low frictional resistance during operation. The permissible temperature range extends from –30 to +120 degrees Celsius. This version is manufactured with standard radial bearing clearance and complies with the specifications of tolerance class P0/PN or ABEC 1.