NSK NU204ET cylindrical roller bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
- Series
- NU
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Decoding NSK NU204ET
- NU 2Series
- Cylindrical roller bearings, NU 2 series. Series differ in outside diameter and width even when the bore is the same.
- 04Bore
- Bore 20 mm (04 × 5).
- ETSuffix
- NSK suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NU 204 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NSK NU204ET measures 20 mm across the bore and 47 mm across the outside diameter; its width is 14 mm (20 x 47 x 14 mm).
NSK NU204ET 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 NU204ET and any equivalents.
When you need a bearing that handles significant radial force at speed, the NSK NU series cylindrical roller bearing is a common choice. Its cylindrical rolling elements distribute load evenly across the raceway. MR Industrial Accessories LLC supplies this series to maintenance and purchasing teams across the United States, Canada, Mexico and South America.
The NU code tells you about the internal geometry: the inner ring has no flanges, so the shaft can move axially relative to the housing. The digits that follow indicate the size and dimension series. For instance, NU204ET is a series 2 bearing with a 20 mm bore, and NU2205ET is a series 22 bearing with a 25 mm bore. The ET suffix means a fiberglass-reinforced polyamide cage, which is appropriate for high speeds and moderate temperatures. Reading the code this way helps you confirm the configuration and size at a glance.
You will find these bearings in gearboxes, pumps, compressors, industrial fans, textile machinery, mining equipment and material handling systems. They also appear in food processing and automotive plants. Their stiffness and radial load capacity suit belt and chain drives as well as machine tool spindles. MR supplies them to support these industries.
Selecting an NU ET bearing involves checking the radial load, the rotation speed and the operating environment. Because the ET cage is polyamide, it has temperature limits; in very hot conditions, consider another variant. Proper mounting requires precise alignment and adequate lubrication, with grease or oil depending on the application. Check internal clearance and the fits on shaft and housing to avoid premature failure. If you are unsure, contact us for guidance.
For cross-referencing, NSK NU series bearings can be exchanged with other brands that use the same international designation, such as SKF, FAG, NTN or Timken, provided dimensions and tolerances match. The ET suffix is specific to NSK, but other manufacturers offer comparable cages. When replacing an existing bearing, the safest approach is to send us the complete code or the main dimensions (inner, outer and width) so we can quote the exact option.
MR Industrial Accessories LLC quotes NSK NU ET series cylindrical roller bearings. Send the code or dimensions via WhatsApp or email and we will reply promptly. We can also advise on lubrication and mounting to keep your equipment running.
Dimensions
20 x 47 x 14 mm (d x D x B): boundary dimensions for basic designation NU 204, according to ISO 15.
- Bore
- 20mm
- Outside diameter (D)
- 47mm
- Width (B)
- 14mm
SKF and other brands, same size
Other brands' pages with basic designation NU 204: 20 x 47 x 14 mm (d x D x B) per ISO 15.
- Need the SKF NU 204? We can also quote:NU 204 ECPNU 204 ECP/C3
- FAGNU204-E-XL-TVP2
- NTNNU204EA
- RKBNU 204
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 NU204ET bearing: what are its dimensions?
- NSK NU204ET measures 20 mm across the bore and 47 mm across the outside diameter; its width is 14 mm (20 x 47 x 14 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 204.
- What does the ET suffix mean in NSK NU series bearings?
- The ET suffix indicates a polyamide cage reinforced with fiberglass. This cage is lightweight and resistant, making it suitable for high speeds and moderate temperatures. It differs from bronze or steel cages, which are used in more severe conditions.
- How do I choose the right NU ET bearing for my application?
- You need to know the radial load, rotation speed and available space. Also consider the working temperature and lubrication type. With that information, we can quote the bearing that best suits your needs. If you have the original bearing code, send it and we will quote it.
- Can I replace an NSK NU ET bearing with one from another brand?
- Yes, as long as the designation and dimensions match. Brands such as SKF, FAG or NTN have equivalents. The ET suffix is specific to NSK, but other brands use similar cages. If you send us the original code, we will indicate the compatible alternative and quote it.