SKF NU 2318 ECJ/C3 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NU 2318 ECJ/C3
- NU 23Series
- Cylindrical roller bearings, NU 23 series. Series differ in outside diameter and width even when the bore is the same.
- 18Bore
- Bore 90 mm (18 × 5).
- ECJ/C3Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NU 2318 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NU 2318 ECJ/C3 measures 90 mm across the bore and 190 mm across the outside diameter; its width is 64 mm (90 x 190 x 64 mm).
SKF NU 2318 ECJ/C3 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 NU 2318 ECJ/C3 and any equivalents.
SKF NU series cylindrical roller bearings are built to handle heavy radial loads at considerable speed. The cylindrical roller and steel cage design supports precise, durable operation in demanding machinery. Typical uses include machine tools, electric motors, pumps and transmission equipment. MR Industrial Accessories supplies this line to customers across the United States and in several Latin American countries.
Reading the code helps you order correctly. NU means the outer ring carries two ribs and the inner ring none, so the bearing allows relative axial displacement. The number that follows is the size code for the dimension series. EC identifies optimized-design rollers with higher load capacity, J a stamped steel cage, and C3 an internal radial clearance above standard. A code such as NU 206 ECJ/C3 therefore describes a series 2 bearing with those characteristics.
These bearings appear in electric motors, centrifugal pumps, compressors, gearboxes, machine tools and power transmission equipment. Their capacity for heavy radial loads and their rigidity suit high mechanical demand. Food processing, petrochemical, steel and general manufacturing operations rely on them for continuous running.
Selection depends on radial load, rotation speed and the operating environment. Assembly calls for precise alignment between shaft and housing to avoid added stress. Grease or oil lubrication, applied correctly, supports service life. Sealing follows the environment; contaminated areas call for extra protection. C3 clearance helps where thermal expansion or interference fits are expected. Always check shaft and housing tolerances.
For interchangeability, SKF NU series bearings can be replaced by products from other makers using the same international designation. Verify critical dimensions and load capacities, since materials and treatments can differ. Send the complete code of the bearing you are replacing and our team can suggest equivalents and help you choose.
To request a quote, send the part number by WhatsApp or email. The team replies promptly and can assist with selection and equivalents.
Dimensions
90 x 190 x 64 mm (d x D x B): boundary dimensions for basic designation NU 2318, according to ISO 15.
- Bore
- 90mm
- Outside diameter (D)
- 190mm
- Width (B)
- 64mm
Same size, other brands
Other brands' pages with basic designation NU 2318: 90 x 190 x 64 mm (d x D x B) per ISO 15.
- FAGNU2318-E-XL-TVP2
- NSKNU2318E
- NTNNU2318NU2318E
- RKBNU 2318
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 NU 2318 ECJ/C3 bearing: what are its dimensions?
- SKF NU 2318 ECJ/C3 measures 90 mm across the bore and 190 mm across the outside diameter; its width is 64 mm (90 x 190 x 64 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 2318.
- What does the C3 suffix mean in an SKF bearing?
- C3 indicates internal radial clearance greater than standard. It is used where thermal expansion or interference fits are expected, preventing excessive preload.
- What is the difference between an NU and an NJ bearing?
- NU has two ribs on the outer ring and none on the inner ring, allowing axial displacement. NJ has one rib on the inner ring, which locates the shaft in one direction. The choice depends on axial guidance needs.
- How should I lubricate a cylindrical roller bearing?
- Grease or oil can be used, depending on speed and operating temperature. Follow the manufacturer's recommendations and keep the bearing clean to avoid contamination. Correct lubrication reduces wear and supports service life.