SKF NU 311 ECP/C3L cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
How to read SKF NU 311 ECP/C3L
- NU 3Series
- Cylindrical roller bearings, NU 3 series. For the same bore, each series has a different outside diameter and width.
- 11Bore
- 55 mm bore: 11 × 5.
- ECP/C3LSuffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NU 311 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NU 311 ECP/C3L bearing has a 55 mm bore, a 120 mm outside diameter and a 29 mm width (55 x 120 x 29 mm).
SKF NU 311 ECP/C3L is a reference of cylindrical roller bearing, within Bearings. Request a quote for NU 311 ECP/C3L via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The SKF cylindrical roller bearing of the NU ECP series is a component designed to withstand high radial loads and considerable speeds. Its design with cylindrical rollers and a stamped steel cage allows robust operation in demanding industrial applications. It is commonly used in transmissions, pumps, compressors and heavy machinery. MR Accesorios Industriales sells this brand and advises you to choose the correct execution for your equipment.
The designation of the NU ECP series is interpreted as follows: the letters NU indicate a cylindrical roller bearing with two ribs on the outer ring and none on the inner ring, which allows relative axial displacement. The letters ECP correspond to a stamped steel cage, centered window and high-capacity rollers. The suffix C3L indicates a greater than standard internal radial clearance and a special factory lubrication. For example, NU 311 ECP/C3L combines these features for a 55 mm shaft diameter.
This type of bearing is used in industries such as cement, steel, paper and food. In Argentina it is commonly found in conveyor belts, mills, centrifugal pumps, gear reducers and mining equipment. Its ability to withstand heavy radial loads and its fatigue resistance make it suitable for continuous operation. It is also used in applications where it is necessary to compensate for thermal expansion of the shaft, thanks to its separable design.
To select correctly, take into account the radial load, the rotational speed and the required internal clearance. The suffix C3L indicates a greater clearance, recommended for interference fits or elevated temperatures. The factory lubrication must be complemented according to the operating conditions. During mounting, ensure precise alignment between shaft and housing, and verify the sealing to prevent contamination. The ECP cage is separable, which facilitates maintenance.
Regarding equivalences, other manufacturers offer bearings with similar designations, but they do not always match exactly. The SKF NU ECP series can be interchanged with competitor products that meet the same dimensions and tolerances, but it is essential to verify the internal clearance and the type of cage. MR Accesorios Industriales can help you find the right reference.
If you need this bearing, send the full part number on WhatsApp to MR Accesorios Industriales. We will quote you shortly and advise you on the best option for your application.
Dimensions
Boundary dimensions of the basic designation NU 311 per ISO 15: 55 x 120 x 29 mm (d x D x B).
- Bore
- 55mm
- Outside diameter (D)
- 120mm
- Width (B)
- 29mm
The same size in other brands
Pages from other brands with the basic designation NU 311: 55 x 120 x 29 mm (d x D x B) per ISO 15.
- FAGNU311-E-XL-TVP2
- NSKNU311E
- NTNNU311NU311EA
- RKBNU 311
They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the SKF NU 311 ECP/C3L bearing?
- The SKF NU 311 ECP/C3L bearing has a 55 mm bore, a 120 mm outside diameter and a 29 mm width (55 x 120 x 29 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation NU 311.
- What does the suffix C3L mean in this bearing?
- The suffix C3L indicates a greater than standard internal radial clearance (C3) and a special factory lubrication (L). This is useful in applications with interference fits or elevated temperatures, where expansion needs to be compensated.
- Is this bearing interchangeable with other brands?
- It can be interchangeable with bearings from other manufacturers that have the same dimensions and tolerances, but it is important to verify the internal clearance and the type of cage. Always consult a specialist before replacing.
- How do you correctly mount an NU ECP bearing?
- Precise alignment between shaft and housing must be ensured, and the sealing must be verified to prevent contamination. The cage is separable, which facilitates mounting. Follow the manufacturer's recommendations for fit and lubrication.