SKF NUP 238 ECML/C3 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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How to read SKF NUP 238 ECML/C3
- NUP 2Series
- Cylindrical roller bearings, NUP 2 series. For the same bore, each series has a different outside diameter and width.
- 38Bore
- 190 mm bore: 38 × 5.
- ECML/C3Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NUP 238 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NUP 238 ECML/C3 bearing has a 190 mm bore, a 340 mm outside diameter and a 55 mm width (190 x 340 x 55 mm).
SKF NUP 238 ECML/C3 is a reference of cylindrical roller bearing, within Bearings. Request a quote for NUP 238 ECML/C3 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF NUP series cylindrical roller bearings are high load capacity radial bearings that allow axial displacement in both directions. They are used in applications requiring support of high radial loads and moderate axial loads, such as gearboxes, machine tools and industrial equipment. MR Accesorios Industriales sells this line.
The NUP designation identifies cylindrical roller bearings with two flanges on the inner ring and one flange with a retaining ring on the outer ring, which allows the shaft to be axially located in both directions. The ECML suffix indicates a one-piece machined brass cage, window type, roller centered, and the C3 designation establishes an internal radial clearance greater than normal. The part numbers in this series share this configuration, with different dimensions depending on size.
These bearings are used in industries such as metallurgy, cement, mining, paper and machine tools. They are common in gearboxes, milling machine spindles, high-flow pumps, industrial fans and transmission equipment. In Argentina, they are found in steel plants, flour mills and automotive production lines, where radial loads are high and precise axial guidance is required.
To select correctly, take into account the radial and axial load to be supported, the rotation speed and the environmental conditions. C3 clearance is suitable when there are thermal gradients between inner and outer rings, or interference fits. Mounting requires cleanliness, careful alignment and adequate lubrication; the brass cage tolerates high temperatures and speeds better. Check the sealing: these bearings are usually open, so they may need additional seals.
Regarding equivalences, SKF NUP bearings can be interchanged with similar designations from other brands that follow the same ISO nomenclature, such as NU, NJ or N. However, dimensions and tolerances may vary between manufacturers, so it is always advisable to verify the complete part number and technical specifications before replacing. MR Accesorios Industriales can advise you on interchangeability without compromising performance.
If you need a quote for an SKF NUP cylindrical roller bearing, send the complete part number by WhatsApp to MR Accesorios Industriales. Our technical team helps you identify the correct option for your equipment and resolve doubts about mounting and lubrication. We are here to provide reliable solutions.
Dimensions
Boundary dimensions of the basic designation NUP 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 NUP 238: 190 x 340 x 55 mm (d x D x B) per ISO 15.
- FAGNUP238-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 NUP 238 ECML/C3 bearing?
- The SKF NUP 238 ECML/C3 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 NUP 238.
- What does the ECML suffix mean on an SKF bearing?
- ECML indicates a one-piece machined brass cage, roller centered. This cage is suitable for high speeds and temperatures, and allows better roller guidance, which contributes to more stable operation.
- When is it advisable to use a bearing with C3 clearance?
- C3 clearance is recommended when there are temperature differences between the inner and outer rings, or when fits are interference. Also in applications where significant thermal expansion is expected, to prevent the clearance from becoming excessively reduced.
- Do NUP bearings allow axial displacement?
- Yes, NUP bearings have two flanges on the inner ring and one flange with a retaining ring on the outer ring, which allows the shaft to be axially located in both directions. They do not allow free axial displacement, but rather guide axially.