NSK 5304ADDU double row angular contact ball bearing

NSK 5304ADDU belongs to double row angular contact ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 5304ADDU and any equivalents.

For assemblies that must handle radial and axial forces at the same time, the NSK ADDU series of double row angular contact ball bearings is a practical option. The two rows of balls share the load, so the bearing can take axial thrust in both directions within the same footprint as a single row unit. These bearings are common in machine tools, pumps and gearboxes where rigidity and running accuracy matter.

The series includes part numbers such as 5203ADDU, 5204ADDU, 5207ADDU, 5208ADDU, 5210ADDU, 5211ADDU, 5302ADDU and 5303ADDU. In each designation, the leading digits define the size and dimension series, while the ADDU suffix covers sealing and internal clearance. That suffix is what tells you how the bearing is protected and how it will behave in service, so it pays to read the full code before ordering.

You will find these bearings in machine tool spindles, centrifugal pumps, compressors, gearboxes and power transmission equipment. They also suit setups where axial and radial clearance must be held to a tight range, such as milling heads or rolling mill rolls. Because they manage combined loads, they appear across metalworking, food processing and petrochemical operations.

When selecting a bearing, look at the radial and axial loads it will see, the rotation speed and the environment. The ADDU seal keeps contaminants out and helps retain lubricant, so check that it matches your lubrication method. During mounting, align the housing and shaft carefully and avoid impacts that could mark the raceways. Correct lubrication and the right internal clearance are what let the bearing reach its expected service life.

If you are replacing a bearing from another brand, send us the complete part number or the bore, outer diameter and width. We can cross it to the NSK ADDU series or another line we supply when the dimensions and load characteristics match. Our team can also help you confirm the designation if you are unsure which suffix applies.

To request a quote, message us on WhatsApp or by email with the part number you need. We reply promptly and, if you want, we can suggest equivalents or help you choose the right bearing for the application.