SKF NU 209 ECJ cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
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How to read SKF NU 209 ECJ
- NU 2Series
- Cylindrical roller bearings, NU 2 series. For the same bore, each series has a different outside diameter and width.
- 09Bore
- 45 mm bore: 09 × 5.
- ECJSuffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NU 209 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NU 209 ECJ bearing has a 45 mm bore, a 85 mm outside diameter and a 19 mm width (45 x 85 x 19 mm).
SKF NU 209 ECJ is a reference of cylindrical roller bearing, within Bearings. Request a quote for NU 209 ECJ via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF cylindrical roller bearings of the NU series with ECJ suffix are components designed to withstand high radial loads and considerable speeds. Their separable design and the axial guidance between inner and outer rings make them ideal for applications requiring high load capacity and rigidity. They are used in industrial machinery, electric motors, pumps and transmission equipment. At MR Accesorios Industriales we sell them as part of our SKF bearing line.
The designation NU … ECJ is interpreted as follows: NU indicates that the bearing has two ribs on the outer ring and none on the inner ring, which allows relative axial displacement between rings. The number that follows corresponds to the size according to ISO standard, where the first two digits indicate the bore diameter and the last one the dimension series. The suffix ECJ indicates an optimized design with a stamped steel cage, higher load capacity and lower friction.
These bearings are used in industries such as metallurgy, cement, paper and food. They are common in large electric motors, gearboxes, centrifugal pumps, industrial fans and machine tools. Their ability to withstand heavy radial loads and their rigidity make them suitable for gear and belt transmissions. In Argentina, they are found in mining equipment, aggregate processing plants and automated production lines.
To select the right bearing, take into account the radial load, the rotation speed and the environmental conditions. Verify that the housing and shaft have the correct tolerance and alignment. Lubrication can be grease or oil; in high-speed applications oil and a cooling system are recommended. Sealing will depend on contamination: the more dust or moisture present, the more you should opt for seals or protective plates. The internal clearance should be chosen according to the working temperature and the fit.
If you need advice to choose the right bearing, send the part number or the dimensions via WhatsApp to MR Accesorios Industriales. Our technical team helps you identify the right option for your application.
Dimensions
Boundary dimensions of the basic designation NU 209 per ISO 15: 45 x 85 x 19 mm (d x D x B).
- Bore
- 45mm
- Outside diameter (D)
- 85mm
- Width (B)
- 19mm
The same size in other brands
Pages from other brands with the basic designation NU 209: 45 x 85 x 19 mm (d x D x B) per ISO 15.
- FAGNU209-E-XL-TVP2
- NSKNU209EW
- NTNNU209NU209EA
- RKBNU 209
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 209 ECJ bearing?
- The SKF NU 209 ECJ bearing has a 45 mm bore, a 85 mm outside diameter and a 19 mm width (45 x 85 x 19 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation NU 209.
- What does the ECJ suffix mean on an SKF bearing?
- ECJ indicates an optimized design with higher load capacity and a stamped steel cage. The 'E' means optimized, 'C' steel cage and 'J' stamped. This reduces friction and improves performance.
- Does this bearing support axial loads?
- No, NU bearings with two ribs on the outer ring and none on the inner ring only support radial loads. For axial loads they must be combined with other bearings or use designs with additional ribs.
- How do I choose between grease or oil lubrication?
- The choice depends on speed and temperature. At high speeds or elevated temperatures, oil with a circulation system is recommended. For moderate speeds and normal conditions, grease is sufficient.