SKF NU 1056 ML/C3 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NU 1056 ML/C3
- NU 10Series
- Cylindrical roller bearings, NU 10 series. Series differ in outside diameter and width even when the bore is the same.
- 56Bore
- Bore 280 mm (56 × 5).
- ML/C3Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NU 1056 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NU 1056 ML/C3 measures 280 mm across the bore and 420 mm across the outside diameter; its width is 65 mm (280 x 420 x 65 mm).
SKF NU 1056 ML/C3 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 NU 1056 ML/C3 and any equivalents.
The SKF NU series covers cylindrical roller bearings built for high radial loads and elevated speeds. Their cylindrical rollers run in a machined brass cage, a combination that suits demanding machinery. MR Industrial Accessories LLC supplies this line to customers in the United States and several Latin American countries.
Reading the code helps you order the right variant. NU means the outer ring carries two ribs while the inner ring has none, so the rings can shift axially relative to each other. The middle digits give the dimension series. ML points to a machined brass cage, chosen for high speeds and high temperatures. The C suffix states internal radial clearance, for instance C3 for clearance above normal. Typical designations include NU 1010 ML/C3, NU 1020 ML/C3 and NU 1024 ML/C3.
These bearings appear in gearboxes, machine tools, pumps, compressors, large electric motors and mining equipment. Because they handle heavy radial loads and run well at speed, they are common in the metallurgical, cement and food industries, as well as on rolling mill rolls and precision machine spindles.
Selection comes down to three inputs: the radial load, the operating speed and the surrounding conditions. Choose the ML cage when temperatures and speeds are high. Specify C3 clearance where a large thermal difference exists between the inner and outer rings. At assembly, check alignment and lubrication carefully. Since the NU design permits axial movement, it does not need to be axially fixed in both directions.
For interchangeability, bearings that follow the same dimensional and execution designation can serve as replacements. Confirm that both the cage suffix and the internal clearance match what the application needs. Principal dimensions are often interchangeable, but load and speed capacities can differ from one manufacturer to another, so review the technical data before substituting a bearing.
To request a quote for SKF NU series bearings, send the complete part number to MR Industrial Accessories LLC by WhatsApp or email. The team replies promptly, can suggest equivalents and helps you choose the option that fits your application.
Dimensions
280 x 420 x 65 mm (d x D x B): boundary dimensions for basic designation NU 1056, according to ISO 15.
- Bore
- 280mm
- Outside diameter (D)
- 420mm
- Width (B)
- 65mm
Same size, other brands
Other brands' pages with basic designation NU 1056: 280 x 420 x 65 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 NU 1056 ML/C3 bearing: what are its dimensions?
- SKF NU 1056 ML/C3 measures 280 mm across the bore and 420 mm across the outside diameter; its width is 65 mm (280 x 420 x 65 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 1056.
- What does the ML suffix mean in an NU bearing?
- ML identifies a one-piece machined brass cage centered on the rollers. It withstands high speeds and elevated temperatures and is stronger than a stamped steel cage.
- When is C3 internal clearance recommended?
- C3 is recommended for elevated operating temperatures or interference fits that reduce clearance, and where greater tolerance to differential thermal expansion between the inner and outer rings is needed.
- Do NU bearings allow axial displacement?
- Yes. The outer ring has two ribs and the inner ring none, so the ring and shaft can shift axially. That makes the NU design suitable for floating supports.