SKF NJ 211 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
Ask us about alternatives. Equivalence is verified for each reference and application.
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How to read SKF NJ 211 ECJ
- NJ 2Series
- Cylindrical roller bearings, NJ 2 series. For the same bore, each series has a different outside diameter and width.
- 11Bore
- 55 mm bore: 11 × 5.
- ECJSuffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NJ 211 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NJ 211 ECJ bearing has a 55 mm bore, a 100 mm outside diameter and a 21 mm width (55 x 100 x 21 mm).
SKF NJ 211 ECJ is a reference of cylindrical roller bearing, within Bearings. Request a quote for NJ 211 ECJ via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The SKF NJ ECJ series cylindrical roller bearing is a high radial capacity component designed to withstand heavy loads and high speeds. Its single-rib inner ring design allows direct mounting on the shaft and facilitates axial positioning in one direction. It is ideal for industrial applications requiring rigidity and precision, such as gearboxes, pumps and machine tools. At MR Accesorios Industriales we supply this series.
The NJ designation indicates that the bearing has an inner ring with a single rib and an outer ring with two ribs, which allows axial guidance of the shaft in one direction. The ECJ suffix refers to the stamped steel window cage, typical of this series. Examples such as NJ 205 ECJ or NJ 210 ECJ show the size number that defines the main dimensions. This configuration is common in applications requiring high radial load capacity and some axial freedom.
These bearings are used in a wide variety of industries in Argentina, such as metallurgy, cement, mining and food processing. They are found in gear reducers, centrifugal pumps, industrial fans, paper machines and transmission equipment. Their ability to withstand high radial loads and their rigidity make them suitable for shafts rotating at high speeds with precision requirements. They are also used in machine tool spindles and rolling mill rolls.
To correctly select an NJ ECJ bearing, take into account the radial load it must withstand, the rotation speed and the environmental conditions. It is essential to verify the appropriate internal clearance and the type of lubrication: grease or oil, depending on the application. Mounting must be carried out with appropriate tools to avoid damage to the rollers and raceways. Alignment between the shaft and the housing is critical to avoid additional loads. Also consider sealing: if the environment has dust or moisture, a bearing with additional seals or shields may be necessary.
Regarding equivalences, cylindrical roller bearings from other brands with similar designations may be interchangeable, but always verify the exact dimensions and tolerances. The SKF NJ ECJ series is distinguished by its stamped steel cage, which offers a balance between strength and speed. When replacing a bearing, make sure the new one meets the load and speed requirements of the original equipment. Not all brands use the same nomenclature, so it is advisable to consult a specialist.
If you need an SKF NJ ECJ series cylindrical roller bearing, at MR Accesorios Industriales we advise you to choose the correct option. Send us the complete part number via WhatsApp and we will quote you promptly. We have a technical team ready to help you.
Dimensions
Boundary dimensions of the basic designation NJ 211 per ISO 15: 55 x 100 x 21 mm (d x D x B).
- Bore
- 55mm
- Outside diameter (D)
- 100mm
- Width (B)
- 21mm
The same size in other brands
Pages from other brands with the basic designation NJ 211: 55 x 100 x 21 mm (d x D x B) per ISO 15.
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 NJ 211 ECJ bearing?
- The SKF NJ 211 ECJ bearing has a 55 mm bore, a 100 mm outside diameter and a 21 mm width (55 x 100 x 21 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation NJ 211.
- What does the NJ ECJ designation mean on an SKF bearing?
- The NJ designation indicates a cylindrical roller bearing with one rib on the inner ring and two on the outer ring, which allows axial guidance in one direction. ECJ refers to the stamped steel window cage. This combination is common in high radial load applications.
- Where are NJ ECJ bearings used?
- They are used in gear reducers, pumps, fans, machine tools and transmission equipment. They are suitable for high radial loads and high speeds. In Argentina, they are found in metallurgical, cement, mining and food industries, among others.
- How do I choose the right NJ ECJ bearing?
- You must consider radial load, speed, internal clearance and lubrication. Verify the shaft and housing dimensions. If the environment is harsh, evaluate options with additional sealing. Consult us with the part number and we will advise you.