Deep Groove Ball Bearings SKF 4205 ATN9

The SKF 4205 ATN9 deep-groove ball bearing is a double-row bearing measuring 25x52x18 mm, offering high radial load-carrying capacity in a compact design.

The SKF 4205 ATN9 deep groove ball bearing is a double-row bearing made from standard bearing steel (100Cr6) with a 25 mm bore, 52 mm outer diameter and 18 mm width. Thanks to the two rows of balls, this design can accommodate high radial forces as well as axial forces on both sides, whilst the axial installation space remains narrow. Fitted with a polyamide cage and standard radial clearance, the bearing is suitable for a wide range of industrial applications. As an open variant, it can be integrated directly into existing oil or grease lubrication systems.

What is the 4205 ATN9 double-row deep groove ball bearing suitable for?

The use of this double-row bearing is particularly recommended where the axial installation space is limited, but single-row designs are insufficient to handle the radial load. Typical applications can be found in general mechanical engineering and in industrial drives subject to combined loads. As this is an open bearing without a flange or groove, the lubricant is supplied via the surrounding housing. The permissible temperature range extends from –20 to +120 degrees and covers standard operating conditions in continuous industrial use.

What are the distinctive features of the polyamide cage in the 4205 ATN9 bearing?

The suffix ATN9 denotes the lightweight polyamide cage, which guides the rolling elements precisely and ensures quiet running. The low weight of the cage material reduces inertial forces during rapid speed changes. Due to its design, the open version has no integrated seals, allowing lubricants to circulate freely. At the same time, an external housing seal protects the bearing assembly from dirt and moisture, enabling the full service life to be utilised within the P0/PN (ABEC 1) tolerance range.