NTN 231/850B spherical roller bearing

NTN 231/850B is a reference of spherical roller bearing, within Bearings. Request a quote for 231/850B via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN B series spherical roller bearing is a component designed to withstand high radial loads and axial loads in both directions, with the ability to adapt to angular misalignment between shaft and housing. Its double-row roller and spherical raceway design allows stable operation even under misaligned mounting conditions. It is used in industrial applications where robustness and durability are critical, such as heavy machinery, mining equipment, steelmaking and power transmission. MR Accesorios Industriales is an official distributor of NTN.

The designation of the B series in NTN bearings is interpreted as follows: the main number indicates the bore diameter and the dimension series, while the B suffix indicates a specific construction variant, generally associated with a machined brass cage guided by the rollers, which provides greater strength and suitability for high speeds. For example, in 230/500B, the code 230 corresponds to the outer diameter and width series, and 500 indicates the bore diameter in millimeters. The final letter B confirms the execution with brass cage. This nomenclature allows quick identification of the main characteristics of the bearing.

These bearings are used in a wide variety of industrial applications in Argentina. They are common in large gearboxes and reducers, in kiln and dryer rollers, in machines for the cement industry, in crushing and grinding equipment, in cranes and lifting equipment, and in general in any system where combined loads and the possibility of shaft deflection exist. Their self-aligning capability makes them ideal for assemblies where perfect alignment between supports cannot be guaranteed, or where thermal and mechanical deformations are significant.

To correctly select a B series spherical roller bearing, it is essential to consider the radial and axial load it must withstand, as well as the rotation speed and environmental conditions. Sealing is a key aspect: there are open and sealed versions; sealed ones protect against contaminants and retain lubricant, extending service life. Internal clearance must also be evaluated according to the application and mounting; adequate clearance prevents thermal overloads. Lubrication can be with grease or oil, and must be chosen according to speed and operating temperature. During mounting, it is recommended to use suitable tools and verify initial alignment to take advantage of the self-aligning capability without forcing the bearing.

Regarding equivalences and interchangeability, NTN B series spherical roller bearings can be interchanged with products from other brands that follow the same dimensional and execution designation. It is important to verify that the main dimensions (bore diameter, outer diameter and width) match, as well as the cage type and internal clearance. Although international standards facilitate interchangeability, it is always recommended to consult the technical specifications of each manufacturer to ensure optimal performance. MR Accesorios Industriales can advise you on selecting the right alternative if you provide us with the code of the original part.

If you need a quote for an NTN B series spherical roller bearing, or if you have doubts about the designation or application, write to us via WhatsApp. At MR Accesorios Industriales we quote the exact code or size you need, with the technical attention that has distinguished us since 1945. Send us your inquiry and we will reply shortly.