23056/C3W33

23056/C3W33 is a double-row self-aligning roller bearing with an inner diameter of 280mm, an outer diameter of 420mm, and a width of 106mm. It is equipped with C3 radial large clearance, which can meet the thermal expansion and contraction requirements of the shaft system under high-temperature conditions. The outer ring features a W33 ring-shaped lubrication groove + oil injection hole structure, enabling on-line continuous grease replenishment. The core function is to provide high rigidity, self-aligning, high-temperature expansion and contraction resistance, and convenient online lubrication for the shaft systems of heavy-duty equipment such as metallurgical hot rolling mills, mining ball mills, cement vertical mills, port heavy lifting equipment, and high-temperature heavy-duty reducers that bear extremely large radial loads and bidirectional axial loads, have an easily misaligned shaft system accompanied by continuous temperature rise, and require long-term maintenance-free operation. It can compensate for ≤2° coaxiality deviation, withstand heavy loads, strong impacts, and fluctuations in working load conditions, and is suitable for low to medium speed, high-temperature, harsh, and scenarios with strict requirements for operational stability, maintenance continuity, and working condition compatibility. It is a key supporting component for the high-load, anti-bias load, easy maintenance, and adaptable long-term continuous operation of the core equipment shaft systems of high-temperature heavy-duty equipment.