SKF NUP 2311 ECP cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NUP 2311 ECP
- NUP 23Series
- Cylindrical roller bearings, NUP 23 series. Series differ in outside diameter and width even when the bore is the same.
- 11Bore
- Bore 55 mm (11 × 5).
- ECPSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NUP 2311 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NUP 2311 ECP measures 55 mm across the bore and 120 mm across the outside diameter; its width is 43 mm (55 x 120 x 43 mm).
SKF NUP 2311 ECP 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 2311 ECP and any equivalents.
SKF NUP cylindrical roller bearings combine high radial load capacity with the ability to accept axial loads in both directions. Their single-row design with flanges on both rings provides rigidity and precision, making them a practical choice for many industrial power transmission and rotating equipment applications.
In the NUP configuration, the inner ring has two fixed flanges while the outer ring has one fixed and one loose flange. This arrangement allows the bearing to locate the shaft axially in both directions while still accommodating thermal expansion of the shaft within the bearing. The ECP suffix denotes an optimized internal design with a reinforced polyamide cage that guides the rollers effectively and reduces friction.
Common applications include gearboxes, centrifugal pumps, industrial fans, machine tools, and other equipment where combined loads and high rigidity are required. These bearings are used across a range of industries such as metallurgy, cement, mining, and food processing, where reliable performance under continuous operation is essential.
When selecting an NUP bearing, consider the radial and axial loads, operating speed, and environmental conditions. Proper shaft and housing fits are critical to avoid additional stresses. Lubrication with grease or oil should be matched to the application, and additional sealing may be needed in contaminated environments. The polyamide cage in ECP versions offers good resistance to temperature and many chemicals.
SKF NUP bearings follow international dimensional standards, so they can be cross-referenced with equivalent designations from other manufacturers that use the same system, provided dimensions and tolerances match. Always verify the full suffix because internal design details can differ between brands. The MR team can help you confirm the correct part number and suggest suitable alternatives.
To request a quote, send the complete bearing designation via WhatsApp or email. The MR team responds promptly and can assist with selection and equivalent options.
Dimensions
55 x 120 x 43 mm (d x D x B): boundary dimensions for basic designation NUP 2311, according to ISO 15.
- Bore
- 55mm
- Outside diameter (D)
- 120mm
- Width (B)
- 43mm
Same size, other brands
Other brands' pages with basic designation NUP 2311: 55 x 120 x 43 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 2311 ECP bearing: what are its dimensions?
- SKF NUP 2311 ECP measures 55 mm across the bore and 120 mm across the outside diameter; its width is 43 mm (55 x 120 x 43 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NUP 2311.
- What does the ECP suffix mean on an SKF cylindrical roller bearing?
- ECP indicates an optimized design with a high-strength polyamide cage, which improves roller guidance and reduces friction.
- Can an SKF NUP bearing handle axial loads in both directions?
- Yes, the NUP design with flanges on the inner and outer rings allows it to withstand axial loads in both directions, in addition to high radial loads.
- How do I request a quote for an SKF NUP bearing from MR?
- Send the complete bearing code via WhatsApp or email to MR, and the team will reply promptly with a quote and can help with selection.