
NTN 24052EMK30D1 spherical roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Spherical roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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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 24052EMK30D1
- 240Series
- Spherical roller bearings, 240 series. For the same bore, each series has a different outside diameter and width.
- 52Bore
- 260 mm bore: 52 × 5.
- EMK30D1Suffix
- NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).
24052 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NTN 24052EMK30D1 bearing has a 260 mm bore, a 400 mm outside diameter and a 140 mm width (260 x 400 x 140 mm).
NTN 24052EMK30D1 is a reference of spherical roller bearing, within Bearings. Request a quote for 24052EMK30D1 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The spherical roller bearing is a self-aligning bearing with two rows of rollers, designed to withstand high radial loads and axial loads in both directions, even with flexed or misaligned shafts. Its spherical outer raceway allows the assembly to self-align, which reduces precision requirements during mounting. It is used in heavy equipment where deformation of the shaft or housing is unavoidable. MR Accesorios Industriales sells the NTN line with technical advice to select the right execution.
The designation of the 240 series with suffixes EMK and D1 reads as follows: the number 240 indicates a spherical roller bearing with a narrow section; the letter E indicates that the cage is made of high-strength stamped steel; the M indicates a machined brass cage; the K means tapered bore (taper 1:12); the 30 is the suffix indicating the tolerance range and internal clearance; and D1 identifies a special NTN execution, generally with lubrication holes and grooves. Examples such as 24024EMK30D1, 24026EMK30D1 and 24028EMK30D1 show how the size varies according to the series number. To request a quote, send us the full part number.
These bearings are used in industries in Argentina where there are heavy loads and misalignment: cement plants, crushing plants, mining, steelmaking, paper mills, flour mills, earthmoving equipment and road machinery. Also in large gearboxes, rotary dryers, kilns and vibrating screens. In all these cases, the self-aligning capability and the robustness of the brass or stamped steel cage make the difference compared with rigid bearings. MR Accesorios Industriales advises you on choosing the right execution according to the type of load and the environment.
To select correctly, take into account the type of bore: cylindrical or tapered. The tapered bore (suffix K) is mounted on an adapter sleeve or withdrawal sleeve, which makes adjustment and disassembly easier. The internal clearance (suffix 30) must be chosen according to the application: mountings with interference fit or high temperatures may require greater clearance. Lubrication is critical: use high-viscosity grease or oil, and make sure the lubrication ducts are aligned. Initial alignment does not need to be perfect thanks to self-alignment, but avoid excessive misalignment that reduces service life.
As for equivalents, NTN spherical roller bearings can be interchanged with those of other brands that follow the same dimensional and execution designation. For example, an NTN 24024 EMK30 D1 may correspond to a bearing from another brand with a similar basic number and equivalent suffixes, but always verify the tolerances and internal clearance. The 240, 241, 222 and 223 series share the same operating principle, but differ in proportions. If you need to replace an unidentified bearing, send us the main dimensions (bore, outer diameter and width) and we will tell you the compatible alternative.
To request a quote for NTN spherical roller bearings, write to us on WhatsApp with the full part number (for example, 24024EMK30D1) or with the dimensions and the type of bore. At MR Accesorios Industriales we reply promptly with the quote and the technical information you need. If you are looking for a variant that does not appear in our list, you can also ask us: we will quote it for you.
Dimensions
Boundary dimensions of the basic designation 24052 per ISO 15: 260 x 400 x 140 mm (d x D x B).
- Bore
- 260 mm
- Outside diameter (D)
- 400mm
- Width (B)
- 140mm
Same size in SKF and other brands
Pages from other brands with the basic designation 24052: 260 x 400 x 140 mm (d x D x B) per ISO 15.
- Looking for the SKF 24052? We also quote:24052 CC/W3324052 CC/C3W3324052 CCK30/W331 more →
- FAG24052-BE-XL24052-BE-XL-K30
- NSK24052CAME424052CAMK30E4
- RKB24052
- TIMKEN24052EJ24052EMB
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 24052EMK30D1 bearing?
- The NTN 24052EMK30D1 bearing has a 260 mm bore, a 400 mm outside diameter and a 140 mm width (260 x 400 x 140 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 24052.
- What does the suffix K mean in a spherical roller bearing?
- The suffix K indicates that the bearing has a tapered bore with a 1:12 taper. This allows it to be mounted on an adapter sleeve or withdrawal sleeve, which makes adjustment and disassembly easier without damaging the shaft. It is a widely used option in applications that require precise adjustment.
- How do I choose the right internal clearance for my application?
- The internal clearance depends on the fit, the working temperature and the speed. For mountings with interference fit or high temperatures, greater clearance is recommended (such as that indicated by the suffix 30). Consult us with your equipment data and we will guide you in choosing the right execution.
- Can I replace a bearing from another brand with an NTN one?
- Yes, if the main dimensions and the type of execution match. Spherical roller bearings follow international standards, but always verify tolerances and internal clearance. If you send us the part number of the original brand or the dimensions, we will tell you the appropriate NTN equivalent.

