Double Row Ball Bearings

Double row deep groove ball bearings are components designed to support radial and axial loads in both directions. Their construction with two rows of balls gives them greater load capacity than a single row bearing of the same size, without sacrificing a compact design. They are selected when the application requires rigidity and precision in a limited space, and where it is not convenient to use a bearing with a larger cross section. To select the right one, you need to start from the shaft diameter, the available housing, and the predominant load type.

In the catalog you will find references such as 4201 ATN9, which corresponds to the series 42 of double row deep groove ball bearings. In these designations, the first pair of digits identifies the dimensional series and the suffix ATN9 indicates a molded polyamide cage, suitable for the usual working conditions of these bearings. Series 42 shares the bore diameter with series 40 and 43, but varies in outside diameter and width, so the choice depends on the available space in the housing and the required load capacity.

These bearings are used in applications where rigidity and load capacity are required in a small space: gearboxes, machine tools, transmission equipment, pumps and fans, among others. Having two rows, they withstand combined loads and moments better than a single row bearing, which makes them useful in assemblies where the shaft cannot be supported at two separate points. They also appear in equipment where the aim is to reduce the number of parts in the assembly.

To request a quote we need the full part number, for example 4201 ATN9, or the main dimensions: bore diameter, outside diameter and width. If you don't have the code at hand, the equivalence with the bearing you are replacing or a photo of the part with the dimensions works. With that data we will give you the available SKF alternative and, if applicable, the equivalent option.

We work with SKF for this line and have 28 double row ball bearing references in the catalog. If your equipment needs a designation that is not listed, contact us via WhatsApp or email with the code or dimensions and we will look for it. We can also advise you on the proper mounting and lubrication so that the bearing performs as expected.