SKF QJ 230 N2MA/C4B20 angular contact ball bearing

SKF QJ 230 N2MA/C4B20 is a reference of angular contact ball bearing, within Bearings. Request a quote for QJ 230 N2MA/C4B20 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

SKF four-point angular contact bearings are ball bearings with a special raceway arrangement that allows them to support radial and axial loads in both directions. They are used in applications where axial space is limited and high rigidity is required, such as machine tool spindles, gearboxes and precision equipment. MR Accesorios Industriales carries this line as part of its SKF bearing offering.

The designation of this series is read in blocks. The initial letters QJ identify the four-point family. The number that follows indicates the size: in the example QJ 230 N2MA/C4B20, the 230 defines the main dimension. The suffixes provide construction details: N2 indicates a groove or locating variant, MA indicates a machined brass cage, C4 establishes the internal clearance, and B20 specifies a particular design modification. Each combination of suffixes gives a different bearing, which is why it is key to request a quote with the complete part number.

These bearings are used in industries that demand precision and reliability: machine tools, measuring equipment, high-ratio gearboxes, cranes and slewing systems. In Argentina, we find them in metalworking, food and process plants, where planned maintenance is critical. Their ability to handle loads in both directions makes them useful in assemblies where there is no space for two separate thrust bearings.

To select correctly, take into account the combined load, rotational speed and environmental conditions. Sealing or shields prevent contamination, which is essential in dusty or humid environments. The C4 internal clearance is greater than standard and is chosen when there are thermal expansions or mounting fits that reduce the clearance. Lubrication must be suitable for the temperature and speed, and alignment between housing and shaft is essential to avoid parasitic stresses.

Regarding equivalents, four-point bearings from other brands can replace SKF ones if dimensions, clearance and load capacity match. The basic number alone is not enough: all suffixes must be verified, because a different cage or a different clearance changes the behavior. An equivalent can be sought by consulting catalogs, but always validating the operating conditions.

To request a quote, send the complete part number via WhatsApp to MR Accesorios Industriales. With that information we can identify the exact variant and offer you the right alternative. If you have doubts about interchangeability, our technical team can advise you.