NTN 21310CK spherical roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Spherical roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
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 NTN 21310CK
- 213Series
- Spherical roller bearings, 213 series. For the same bore, each series has a different outside diameter and width.
- 10Bore
- 50 mm bore: 10 × 5.
- CKSuffix
- NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).
21310 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NTN 21310CK bearing has a 50 mm bore, a 110 mm outside diameter and a 27 mm width (50 x 110 x 27 mm).
NTN 21310CK is a reference of spherical roller bearing, within Bearings. Request a quote for 21310CK via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The NTN CK series spherical roller bearing is a self-aligning bearing with two rows of rollers and a tapered bore, allowing angular misalignment between shaft and housing. It is used in applications where there is shaft deflection or misaligned mounting, such as industrial drives, mining equipment, conveyor belts and heavy machinery. MR Accesorios Industriales sells this series.
The CK series designation is read as follows: the initial numbers indicate the size and the dimension series, and the CK suffix indicates that the bearing has a tapered bore and a sheet metal cage. For example, 21308CK, 21309CK and 21310CK share the CK suffix and differ in bore diameter and load capacity. The tapered bore makes mounting easier on shafts with an adapter sleeve and allows the internal clearance to be adjusted.
These bearings are used in Argentine industries such as cement, mining, steel, paper and food. They are found in gearboxes, mills, screens, conveyor belts, industrial fans and process equipment where loads are high and misalignment may occur. Their self-aligning capability makes them suitable for long shafts or shafts subject to deflection.
To correctly select a CK series spherical roller bearing, take into account radial and axial load, rotation speed and environmental conditions. Sealing is key: if there is dust or moisture, choose variants with seals or covers. Lubrication must be adequate, and mounting with a tapered bore requires controlling radial clearance through axial advance. Initial alignment and correct fitting prevent premature failures.
As for equivalents, spherical roller bearings with a tapered bore are identified by their numeric designation and suffixes that indicate features such as cage, sealing or tolerance. When looking for a replacement, compare main dimensions, load capacity and bore type. If you have another brand's part number, at MR Accesorios Industriales we can tell you the compatible alternative.
To request a quote for the NTN CK series spherical roller bearing you need, send us the full part number by WhatsApp. At MR Accesorios Industriales we will quote it promptly. If you are looking for a specific variant, write to us with the exact model and we will advise you.
Dimensions
Boundary dimensions of the basic designation 21310 per ISO 15: 50 x 110 x 27 mm (d x D x B).
- Bore
- 50 mm
- Outside diameter (D)
- 110mm
- Width (B)
- 27mm
Same size in SKF and other brands
Pages from other brands with the basic designation 21310: 50 x 110 x 27 mm (d x D x B) per ISO 15.
- Looking for the SKF 21310? We also quote:21310 E21310 EK21310 E/C31 more →
- FAG21310-E1-XL21310-E1-XL-K
- NSK21310EAE421310EAKE4
- RKB21310
- TIMKEN21310EJ
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 NTN 21310CK bearing?
- The NTN 21310CK bearing has a 50 mm bore, a 110 mm outside diameter and a 27 mm width (50 x 110 x 27 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 21310.
- What does the CK suffix mean on an NTN bearing?
- The CK suffix indicates that the bearing has a tapered bore and a sheet metal cage. This makes mounting easier on tapered shafts or with an adapter sleeve and allows the internal clearance to be adjusted. It is a common designation in spherical roller bearings.
- Where are CK series spherical roller bearings used?
- They are used in equipment with high loads and possible misalignment, such as gearboxes, mills, conveyor belts and heavy machinery in the cement, mining, steel and paper industries.
- How do I request a quote for an NTN CK series bearing?
- Write to us on WhatsApp with the full part number (for example, 21308CK) and we will quote it promptly. If you need help identifying the reference, send us a photo or the main dimensions.