23052F3/W33

23052F3/W33 is a double-row self-aligning roller bearing (cylindrical bore) with an inner diameter of 260mm, an outer diameter of 400mm, and a width of 104mm. The core function is to provide high rigidity + self-aligning + load adaptability + convenient online lubrication for the shaft systems of heavy-duty equipment such as metallurgical rolling mills, mining ball mills, cement vertical mills, port portal cranes, large reducers, etc., which are heavy and have easily misaligned shaft systems, with continuous vibration and impact in the working conditions and requiring long-term online grease replenishment. F3 corresponds to the specific clearance and stamped steel cage combination for the corresponding working conditions, which can compensate for ≤2° coaxiality errors and withstand extremely large radial loads and bidirectional axial loads. The outer ring of W33 has a ring-shaped lubrication groove and 3 lubrication holes, supporting online grease replenishment without stopping, suitable for low to medium-speed, harsh working conditions, and scenarios with high requirements for operation stability, maintenance convenience, and batch adaptability of heavy-duty general equipment. It is a cost-effective supporting component for heavy-duty general shaft systems with high load-bearing capacity, anti-bias loading, easy maintenance, and adaptability for long-term continuous operation. It is particularly suitable for heavy production lines and general heavy-duty equipment shaft systems that require frequent grease replenishment and have no extreme impacts in the working conditions, while also considering operational reliability and maintenance economy.