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Cylindrical roller bearing SKF NUP 311 ECNM/C3
- Manufacturer Part Number
- NUP 311 ECNM/C3
- Brand
- SKFOfficial brand
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
Other brands in this category
- FAG
- NTN
- TIMKEN
Ask us about alternatives. Equivalence is verified for each reference and application.
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Description
SKF NUP 311 ECNM/C3 is a cylindrical roller bearing reference, within Bearings. Request a quote for NUP 311 ECNM/C3 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The SKF NUP ECNM/C series cylindrical roller bearing is a high radial capacity component designed to withstand combined loads and tilting moments. Its design with a double flange on the inner ring and one flange on the outer ring allows axial location in both directions, making it ideal for applications requiring precise axial location. It is a robust solution for industrial machinery operating at moderate speeds and high loads.
The NUP ECNM/C designation is interpreted as follows: NUP indicates a cylindrical roller bearing with a double flange on the inner ring and one flange on the outer ring, which allows axial guidance in both directions. EC indicates an optimized design with higher load capacity and modified profile rollers. NM corresponds to a machined brass cage, and /C3 specifies an internal radial clearance greater than standard. For example, the code NUP 311 ECNM/C3 combines these characteristics in a series 3 size.
This type of bearing is used in industrial applications requiring high rigidity and radial load capacity, such as gearboxes, high-flow pumps, compressors, machine tools and power transmission equipment. In Argentina, it is commonly found in the food, petrochemical and steel industries and in cement and mining production plants. Its ability to withstand combined loads makes it suitable for transmission shafts and spindles where precise axial positioning is required.
To correctly select an NUP ECNM/C bearing, take into account the radial and axial load it must withstand, the rotation speed and the environmental conditions. The C3 internal clearance is recommended when there are thermal differences between shaft and housing or when interference fits are expected. Assembly must be carried out with suitable tools, avoiding direct impacts on the rollers. Lubrication can be with grease or oil, depending on the application, and it is essential to maintain precise alignment between shaft and housing to avoid parasitic loads.
Regarding equivalences and interchangeability, cylindrical roller bearings of this series can be found in other brands under similar designations, although the suffix letters may vary. It is important to verify the main dimensions (bore, outer diameter and width) and the cage type before replacing one bearing with another. At MR Accesorios Industriales we supply the SKF brand and can advise you on compatibility with other brands, without compromising equipment performance.
If you need an NUP ECNM/C bearing or want to confirm the exact designation for your equipment, send us the part number on WhatsApp. At MR Accesorios Industriales we will quote you shortly and help you choose the right option for your application.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the C3 suffix mean on an NUP ECNM bearing?
- The C3 suffix indicates an internal radial clearance greater than standard. It is used when operating conditions involve thermal differences between shaft and housing, or when interference fits are required that reduce clearance during assembly.
- Does this bearing support axial loads in both directions?
- Yes, the NUP design with a double flange on the inner ring and one flange on the outer ring allows axial location in both directions, in addition to withstanding high radial loads. It is suitable for applications requiring precise axial positioning.
- How can I tell if a bearing from another brand is equivalent?
- You must compare the main dimensions (bore, outer diameter and width), the cage type and the internal clearance. Designations can vary between manufacturers, so it is advisable to consult a specialist before replacing a bearing.

