SKF NUP 315 ECM/C3VA301 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NUP 315 ECM/C3VA301
- NUP 3Series
- Cylindrical roller bearings, NUP 3 series. Series differ in outside diameter and width even when the bore is the same.
- 15Bore
- Bore 75 mm (15 × 5).
- ECM/C3VA301Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NUP 315 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NUP 315 ECM/C3VA301 measures 75 mm across the bore and 160 mm across the outside diameter; its width is 37 mm (75 x 160 x 37 mm).
SKF NUP 315 ECM/C3VA301 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 NUP 315 ECM/C3VA301 and any equivalents.
The SKF NUP 315 ECM/C3VA301 is a single-row cylindrical roller bearing designed for shafts that need axial location in both directions. Its inner ring has three ribs and the outer ring two, so it handles high radial loads along with moderate axial loads either way. Typical uses include gearboxes, pumps, and machine tools where the shaft must stay fixed axially.
Reading the part number helps you confirm what you are ordering. NUP tells you the rib arrangement: three ribs on the inner ring, two on the outer. The 315 gives the bore and dimension series. ECM means a one-piece machined brass cage. C3 is an internal radial clearance greater than normal. VA301 is a specific execution variant. Always check the complete designation before ordering.
This bearing suits industries such as metallurgy, food processing, cement, and petrochemicals. You will find it in reducers and gearboxes, centrifugal pumps, compressors, machine tools, conveyors, and mining equipment. Because it takes radial loads and moderate axial loads in both directions, it works well on transmission shafts or rolling mill rolls where vibration or thrust must not shift the shaft.
When selecting, consider the radial and axial loads, rotational speed, lubrication type, and the working environment. The C3 clearance is a good choice when temperature differences exist between shaft and housing or when running at higher speed. The ECM brass cage is intended for high loads at medium speeds. During mounting, check alignment of shaft and housing and make sure the rings seat properly. Grease or oil both work depending on the case, and sealing depends on contamination levels.
For replacements, cylindrical roller bearings from different brands can be interchanged if the main dimensions and execution match. The SKF NUP series has equivalents elsewhere, but suffixes vary and do not always mean the same thing. Do not rely on the basic number alone. Check radial clearance, cage type, and tolerances. If you are unsure, send the complete part number and we will advise you.
MR supplies SKF bearings and can help you find the right replacement. To request a quote, send the complete part number by WhatsApp or email. We reply promptly and can suggest equivalents and help you choose. We also advise on mounting, lubrication, and maintenance so the bearing performs as expected.
Dimensions
75 x 160 x 37 mm (d x D x B): boundary dimensions for basic designation NUP 315, according to ISO 15.
- Bore
- 75mm
- Outside diameter (D)
- 160mm
- Width (B)
- 37mm
Same size, other brands
Other brands' pages with basic designation NUP 315: 75 x 160 x 37 mm (d x D x B) per ISO 15.
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 NUP 315 ECM/C3VA301 bearing: what are its dimensions?
- SKF NUP 315 ECM/C3VA301 measures 75 mm across the bore and 160 mm across the outside diameter; its width is 37 mm (75 x 160 x 37 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NUP 315.
- What does the C3 suffix mean on an SKF bearing?
- C3 indicates an internal radial clearance greater than normal. It is chosen for high-speed operation or when temperature differences between shaft and housing exist, as the extra clearance compensates for thermal expansion and prevents the bearing from running too tight.
- How do I know if an NUP bearing is interchangeable with another brand?
- For interchangeability, the main dimensions (bore, outer diameter, and width) and the execution type must match. Suffixes can vary between brands, so check radial clearance and cage type. If you have doubts, consult us with the complete part number.
- What are typical applications for the NUP bearing?
- It is used on shafts that must be axially fixed, such as in gearboxes, pumps, compressors, and machine tools. It withstands high radial loads and moderate axial loads in both directions, making it common in metallurgical, food processing, and petrochemical industries.