23056CA/W33

23056CA/W33 is a double-row symmetrical self-aligning roller bearing with an inner diameter of 280mm, an outer diameter of 420mm, and a width of 106mm (CA represents the symmetrical roller design, and W33 indicates the outer ring with lubrication grooves and oil injection holes). The core positioning is to provide reliable support for heavy equipment shaft systems that bear extremely large radial loads and bidirectional medium axial loads, such as supporting rollers of metallurgical rolling mills, hollow shafts of mining ball mills, cement vertical mills rollers, rotating mechanisms of port cranes, large heavy-duty reducers, and main shafts of hydroelectric generators. These shaft systems are prone to bending due to heavy loads or installation errors and require long-term continuous operation and online supplementary lubrication. The symmetrical roller design enables the load to be evenly distributed between the two rows of rollers. The lubrication structure of W33 can achieve continuous online supplementary lubrication through the lubrication grooves and oil injection holes of the outer ring, and is suitable for long-term continuous operation under low to medium speed, heavy load, and strong impact conditions. It can compensate for ≤2° shaft coaxiality deviation and tolerate load fluctuations in the working conditions. It is a key basic component for ensuring the operational accuracy, reducing failure risks, and extending maintenance cycles of heavy core equipment shaft systems. It is particularly suitable for scenarios with stricter requirements for bearing load uniformity, operational stability, and online lubrication maintenance convenience in heavy long-term operation conditions.