QJ338-N2-MPA

The QJ338-N2-MPA is an advanced four-point contact ball bearing engineered for applications with complex, predominantly axial loads. Its standout feature is the unique gothic arch raceway geometry, which enables the bearing to accommodate significant axial loads in both directions, as well as radial loads, all within a single, compact unit. This design often allows one QJ series bearing to replace a matched pair of angular contact bearings, leading to considerable space savings and a simplified, more efficient machine design. The "N2" designation indicates two locating slots in the outer ring, which facilitate secure mounting and prevent rotation in the housing. This makes the bearing an ideal solution for gearboxes, pumps, and other industrial machinery where space is at a premium and reliable axial load support is critical.

Durability and high performance are central to the QJ338-N2-MPA, highlighted by its solid brass cage, denoted by the "MPA" suffix. This robust, rib-guided cage offers superior strength and stability, even under conditions of high speed, heavy loads, and significant vibration. Brass provides excellent heat dissipation and has a low coefficient of friction, which contributes to cooler operation and extends the bearing's service life. The cage's precise construction ensures optimal ball guidance, reducing wear and enhancing rotational accuracy. This combination of a versatile four-point contact design and a rugged brass cage makes the QJ338-N2-MPA a dependable choice for demanding applications requiring both high load capacity and long-term operational reliability.