SKF QJ 309 N2MA/C2L angular contact ball bearing

SKF QJ 309 N2MA/C2L is a reference of angular contact ball bearing, within Bearings. Request a quote for QJ 309 N2MA/C2L via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

SKF QJ series angular contact bearings are four-point ball bearings, designed to withstand combined radial and axial loads in both directions. They are used in applications requiring high precision and rigidity, such as machine tool spindles, gearboxes and transmission equipment. MR Accesorios Industriales supplies this line with technical advice to select the right design for your application.

The QJ series designation is interpreted as follows: the letters QJ identify the four-point series. The numbers that follow indicate the size, where the last two digits correspond to the bore diameter (multiplied by 5). For example, in QJ 203 N2MA/C2L, the code 203 indicates a bore diameter of 17 mm. The N2 suffix indicates two notches in the outer ring to facilitate mounting. The MA combination refers to the machined brass cage. The C2L suffix specifies a reduced internal radial clearance, suitable for applications requiring high precision.

These bearings are used in industries such as metalworking, food, paper and mining. In Argentina, they are common in milling machine, grinding machine and machining center spindles, as well as in speed reducers and transmission equipment operating with axial loads in both directions. Their ability to withstand combined loads makes them suitable for applications where axial space is limited and rigidity is required.

To correctly select a QJ bearing, take into account the magnitude and direction of the loads, the rotational speed and the environmental conditions. Sealing is not integrated in this series; it is recommended to protect the bearing with external seals if contaminants are present. Lubrication can be with grease or oil, depending on speed and temperature. It is essential to ensure precise alignment between the shaft and the housing to avoid additional loads. The C2L internal clearance must be verified according to the fit and tolerances of the assembly.

As for equivalents, four-point bearings from other brands can be interchanged if the main dimensions and internal clearance match. However, suffix designations vary between manufacturers, so it is essential to verify each case. MR Accesorios Industriales supplies the SKF brand as part of its bearing line, and can advise you on interchangeability with other references.

To receive a quote, send the complete bearing part number you need by WhatsApp to MR Accesorios Industriales. Our technical team will confirm the quote and the alternatives if the exact part number is not listed online. We can also help you interpret designations or select the right bearing for your application.