SKF NJ 238 ECMA cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Request your quote via WhatsApp or email, with the quantity you need.
Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
How to read SKF NJ 238 ECMA
- NJ 2Series
- Cylindrical roller bearings, NJ 2 series. For the same bore, each series has a different outside diameter and width.
- 38Bore
- 190 mm bore: 38 × 5.
- ECMASuffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NJ 238 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NJ 238 ECMA bearing has a 190 mm bore, a 340 mm outside diameter and a 55 mm width (190 x 340 x 55 mm).
SKF NJ 238 ECMA is a reference of cylindrical roller bearing, within Bearings. Request a quote for NJ 238 ECMA via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF NJ ECMA series cylindrical roller bearings are components designed to withstand high radial loads and considerable speeds. Their cylindrical roller construction allows linear contact that distributes the load over a wide surface, making them suitable for demanding applications in industrial machinery. MR Accesorios Industriales sells this line in Buenos Aires, Argentina, and advises you on selecting the right part number for your equipment.
The designation of these bearings is interpreted from the NJ prefix, which identifies the cylindrical roller series with a specific configuration, followed by a number that indicates the dimension series and the bore size. For example, NJ 236 ECMA and NJ 238 ECMA correspond to different dimension series, while NJ 2232 ECMA and NJ 2236 ECMA belong to the 22 series, with higher capacity. The ECMA codes share a particular execution within the family. To request a quote, simply send the complete part number shown on your equipment or drawing.
These bearings are used in a wide variety of industries in Argentina, such as metallurgy, cement, mining and food processing. They are found in gearboxes, industrial pumps, fans, conveyors and machine tools, where radial loads are predominant. Their ability to withstand high speeds and loads makes them suitable for equipment that operates continuously, such as mills, crushers and power transmission systems in manufacturing plants.
To select the correct bearing, take into account the magnitude and direction of the load, the rotation speed and the environmental conditions. During assembly, it is essential to ensure precise alignment between the shaft and the housing, since cylindrical rollers are sensitive to misalignment. Proper lubrication, whether grease or oil, extends service life and reduces wear. Follow the manufacturer's recommendations for fitting and cleaning the seat, and verify that the internal clearance is appropriate for your application.
When looking for replacements, it is common to find equivalences between brands such as SKF, FAG, NSK or NTN. Although the main dimensions usually match, there may be differences in execution, such as the cage type or heat treatment. Therefore, it is always advisable to compare the technical specifications and consult a specialist before replacing a bearing. MR Accesorios Industriales helps you identify the alternative compatible with your original part number.
If you need a quote for SKF NJ ECMA series bearings, write to us on WhatsApp with the exact part number shown on your equipment. At MR Accesorios Industriales we reply shortly with the corresponding quote. We can also advise you if you have doubts about the designation or need to confirm interchangeability with other brands.
Dimensions
Boundary dimensions of the basic designation NJ 238 per ISO 15: 190 x 340 x 55 mm (d x D x B).
- Bore
- 190mm
- Outside diameter (D)
- 340mm
- Width (B)
- 55mm
The same size in other brands
Pages from other brands with the basic designation NJ 238: 190 x 340 x 55 mm (d x D x B) per ISO 15.
- FAGNJ238-E-M1
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 238 ECMA bearing?
- The SKF NJ 238 ECMA bearing has a 190 mm bore, a 340 mm outside diameter and a 55 mm width (190 x 340 x 55 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation NJ 238.
- What applications do NJ ECMA bearings have?
- They are used in equipment with high radial loads and moderate to high speeds, such as gearboxes, pumps, fans and conveyors. In Argentina, they are common in the metallurgical, cement and food industries. Their cylindrical roller design provides high load capacity and rigidity.
- How do I choose the right NJ ECMA bearing?
- Consider the radial load, speed, temperature and environment. Check the shaft and housing dimensions, and ensure proper lubrication and alignment. If you have the original part number, send it by WhatsApp and we will quote that exact part number.
- Can I replace an NJ ECMA bearing with another brand?
- Yes, dimensional equivalences exist between brands, but they may vary in execution. It is important to compare the technical specifications. If you send us the part number of the original part, we will indicate the compatible alternative and quote it for you.