This listing is for 2 piece/s.An angular contact ball bearing consists of a raceway in both the outer and inner rings, which are positioned opposite each other. When the angular contact bearing is used as part of a pair, it has the capacity for a considerable load and can accommodate both radial and axial loads. These ball bearings are designed for use in a range of applications, including transmissions and gearboxes, cranes and other lifting equipment, rail and transportation, marine and shipping, and other general engineering situations. Once installed, they benefit from needing minimal amounts of maintenance because the rubber seals will retain the pre-filled lubricant. Specifications Inner Diameter: 30 mm Outer Diameter: 62 mm Width: 23.8mm