SKF NUP 309 ECJ/C3VB152 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NUP 309 ECJ/C3VB152
- NUP 3Series
- Cylindrical roller bearings, NUP 3 series. Series differ in outside diameter and width even when the bore is the same.
- 09Bore
- Bore 45 mm (09 × 5).
- ECJ/C3VB152Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NUP 309 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NUP 309 ECJ/C3VB152 measures 45 mm across the bore and 100 mm across the outside diameter; its width is 25 mm (45 x 100 x 25 mm).
SKF NUP 309 ECJ/C3VB152 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 NUP 309 ECJ/C3VB152 and any equivalents.
For equipment that must carry heavy radial loads while also holding the shaft axially in both directions, the SKF NUP ECJ series is a common choice. These cylindrical roller bearings use a stamped steel cage and a flanged inner and outer ring arrangement. MR Industrial Accessories LLC supplies this line to maintenance and purchasing teams across the United States and Latin America, and can help you confirm the exact designation before you order.
Reading the code helps you avoid ordering the wrong part. NUP means the bearing has flanges on both the inner and outer rings, so it can locate the shaft axially in either direction. ECJ points to an optimized internal design with a stamped steel cage and larger rollers. Extra suffixes may follow: C3 for increased radial clearance, or VB152 for a specific execution. A full example is NUP 309 ECJ/C3VB152, which combines the NUP series, ECJ design, C3 clearance and VB152 variant. Ordering by the complete code is the safest approach.
These bearings are found where radial loads are high and speeds are moderate. Typical equipment includes gearboxes, centrifugal pumps, compressors, machine tools and conveyors, as well as steel, cement and paper machinery. Because the bearing is separable, it simplifies assembly and maintenance in locations that are hard to reach. It works both in fixed positions and in supports that need some axial freedom.
When selecting an NUP ECJ bearing, review the radial and axial loads, the rotation speed and the operating environment. Choose C3 radial clearance if the application runs hot or uses interference fits. Lubrication should match temperature and speed: grease for slower running, oil for higher revolutions. During mounting, check alignment between housing and shaft, and avoid impacts that could mark the rollers or raceways. Careful installation helps the bearing reach its expected service life.
For replacements, other manufacturers may offer bearings with the same dimensional and execution designation. Always compare tolerances, radial clearance and cage type, because small differences can change performance. Suffixes are not always interchangeable between brands, so it is wise to check the technical data before substituting. If you are unsure, send us the original part number and we will help you find a suitable option.
To request a quote or confirm the right bearing for your equipment, contact us on WhatsApp or by email. Share the full part number, a photo of the nameplate or the bearing dimensions, and our team will reply promptly with advice and equivalent options.
Dimensions
45 x 100 x 25 mm (d x D x B): boundary dimensions for basic designation NUP 309, according to ISO 15.
- Bore
- 45mm
- Outside diameter (D)
- 100mm
- Width (B)
- 25mm
Same size, other brands
Other brands' pages with basic designation NUP 309: 45 x 100 x 25 mm (d x D x B) per ISO 15.
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
- SKF NUP 309 ECJ/C3VB152 bearing: what are its dimensions?
- SKF NUP 309 ECJ/C3VB152 measures 45 mm across the bore and 100 mm across the outside diameter; its width is 25 mm (45 x 100 x 25 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NUP 309.
- What does the ECJ suffix mean on an NUP bearing?
- ECJ identifies an optimized design that uses a stamped steel cage and larger diameter rollers. It is an SKF designation for this series.
- Can I replace an NUP ECJ bearing with another brand?
- Yes, if the dimensional designation and radial clearance match. Check tolerances and cage type, as these can differ between manufacturers. If in doubt, send us the original part number.
- How do I choose between normal radial clearance and C3?
- C3 clearance is often used when the bearing runs at high temperatures or with interference fits, because it allows for thermal expansion. Under normal conditions, standard clearance is usually sufficient. Evaluate each application.