NSK NU2204W cylindrical roller bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
- Series
- NU
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Decoding NSK NU2204W
- NU 22Series
- Cylindrical roller bearings, NU 22 series. Series differ in outside diameter and width even when the bore is the same.
- 04Bore
- Bore 20 mm (04 × 5).
- WSuffix
- NSK suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NU 2204 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NSK NU2204W measures 20 mm across the bore and 47 mm across the outside diameter; its width is 18 mm (20 x 47 x 18 mm).
NSK NU2204W belongs to cylindrical roller 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 NU2204W and any equivalents.
Cylindrical roller bearings in the NSK NU series are built to handle heavy radial forces at considerable speeds. Their cylindrical rollers run on parallel raceways, giving the rigidity and durability that industrial equipment demands. MR Industrial Accessories LLC supplies this series to customers across the United States and in several Latin American countries.
Reading the NU code helps you select the right bearing. The letters NU mean the inner ring has no flanges, so the shaft and housing can shift axially relative to each other. The number that follows identifies the dimension series. When present, the W suffix means the outer ring has a groove for a retaining ring. For instance, NU313W, NU314W and NU315W all belong to diameter series 3 but differ in bore diameter; NU2204W is from the smaller-section series 22. Understanding these designations simplifies ordering.
These bearings appear in gearboxes, centrifugal pumps, compressors, machine tools and power transmission equipment. They support high radial loads and run well at elevated speeds, which makes them suitable for demanding environments. Food processing, petrochemical, steel and mining operations rely on this series for continuous, reliable operation.
Selection and installation require attention to several factors. Choose open bearings for oil or grease lubrication in closed systems; choose sealed or shielded versions where contaminants are present. Align shaft and housing precisely to avoid unwanted axial loads. Match lubrication to the operating speed and temperature, and select internal clearance according to service conditions.
For interchangeability, NSK NU series bearings can replace those from other manufacturers that use the same standardized designation, such as SKF, FAG or NTN, provided dimensions and tolerances are checked. Confirm the W suffix and any other variants to ensure compatibility. Our technical team can assist if you have questions.
Dimensions
20 x 47 x 18 mm (d x D x B): boundary dimensions for basic designation NU 2204, according to ISO 15.
- Bore
- 20mm
- Outside diameter (D)
- 47mm
- Width (B)
- 18mm
SKF and other brands, same size
Other brands' pages with basic designation NU 2204: 20 x 47 x 18 mm (d x D x B) per ISO 15.
- Need the SKF NU 2204? We can also quote:NU 2204 ECP
- FAGNU2204-E-XL-TVP2
- NTNNU2204EA
- RKBNU 2204
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- NSK NU2204W bearing: what are its dimensions?
- NSK NU2204W measures 20 mm across the bore and 47 mm across the outside diameter; its width is 18 mm (20 x 47 x 18 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 2204.
- What does the W suffix indicate on NSK NU series bearings?
- It means the outer ring has a retaining ring groove. This lets you fix the bearing axially in the housing with a circlip, which simplifies housing design.
- Should I choose an open NU bearing or a sealed one?
- It depends on the environment. If dust, moisture or particles are present, a sealed or shielded bearing is better. In clean conditions with controlled lubrication, an open bearing works well and is easier to maintain.
- Can I replace an NU bearing from another brand with an NSK one?
- Yes, as long as the main dimensions, execution type and suffix match. NU series cylindrical roller bearings follow international standards, so interchangeability between brands is possible. Always verify the technical specifications.