Deep Groove Ball Bearings SKF 4306 ATN9

The SKF 4306 ATN9 double-row deep groove ball bearing, measuring 30x72x27 mm, accommodates high radial loads whilst offering a compact shaft mounting.

The 4306 ATN9 deep groove ball bearing is a double-row radial rolling bearing from SKF. Thanks to the two rows of balls arranged side by side, the design can handle higher radial forces than single-row variants with the same bore size. The manufacturer produces the raceways and balls from standard rolling bearing steel 100Cr6 to tolerance class P0 or ABEC 1. The open bearing, without sealing rings, allows for flexible integration into existing lubrication systems. When you purchase this bearing, you are acquiring a component for precisely guided shafts.

What is the 4306 ATN9 double-row deep groove ball bearing suitable for?

This double-row bearing proves particularly useful where, given a shaft diameter of 30 mm, a single-row ball bearing reaches its load-carrying capacity limits. Typical applications include general mechanical engineering, gearboxes, conveyor rollers and drive shafts. As the outer ring is designed without a flange or ring groove, the cylindrical body fits flush into smooth housing bores. In addition to high radial forces, the bearing accommodates low axial guidance loads in both directions.

What are the distinctive features of the combination of a polyamide cage and an open design?

The designation letter ATN9 stands for a design with a polyamide cage. This cage material ensures low inertia, dampens running noise and allows operating temperatures between –20 and +120 degrees. As an open rolling bearing, this design has no integrated seals. The component therefore requires the housing to be sealed externally against dirt and moisture. The design with standard radial bearing clearance provides a balanced relationship between zero play and operational reliability within standard fit tolerances.