Angular contact ball bearing SKF QJ 219 N2MA

SKF QJ 219 N2MA is a angular contact ball bearing reference, within Bearings. Request a quote for QJ 219 N2MA via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

SKF angular contact bearings of the QJ series 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 as an official brand, with more than 80 years of experience in the Argentine industrial market.

The QJ series designation is interpreted as follows: the letters QJ identify four-point angular contact ball bearings. The number that follows indicates the bore diameter according to a dimensional code. The suffixes N2 and MA provide information about the internal design and the cage: N2 indicates a groove in the outer ring for retention, and MA indicates a machined brass cage, centered on the outer ring. For example, QJ 212 N2MA, QJ 214 N2MA and QJ 217 N2MA share the same designation structure, varying in size according to the bore diameter.

These bearings are used in industries such as metalworking, food, chemical and steel. In Argentina, they are common in milling machine and grinding machine spindles, in rotary tables, in speed reducers and in pumping equipment. Their ability to withstand axial loads in both directions makes them suitable for applications requiring precise positioning and high axial rigidity, such as in machine tools and measuring equipment.

To select a QJ bearing, take into account the axial and radial load it must withstand, the operating speed and the environmental conditions. It is essential to verify the internal clearance and the type of lubrication: these bearings can be lubricated with grease or oil, and in high-speed applications oil lubrication is recommended. Mounting must be carried out with careful alignment and, in many cases, with an interference fit on the inner ring to ensure precision. Sealing will depend on the contamination of the environment; there are variants with shield plates.

Regarding equivalences and interchangeability, SKF QJ series bearings can be replaced by products from other brands that follow the same international designation. However, it is important to verify tolerances and internal clearance, as they may vary between manufacturers. Always consult a specialist before replacing a bearing, to ensure dimensional and functional compatibility. MR Accesorios Industriales can advise you with the exact part number and the available alternatives.

If you need to request a quote for a QJ series bearing, send us the full part number on WhatsApp. At MR Accesorios Industriales we provide personalized technical support and help you find the right solution for your application. With more than 80 years in the industry, we are your reliable partner in power transmission.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.