23056F3/W33

23056F3/W33 is a double-row self-aligning roller bearing with an inner diameter of 280mm, an outer diameter of 420mm, and a width of 106mm (F3 is typically a cylindrical bore and machined brass cage, while W33 has an outer ring with a ring-shaped lubrication groove and 3 oil holes). The core positioning is to provide a reliable support for heavy equipment shaft systems that are subjected to extremely large radial loads + medium axial loads in both directions, have an easily misaligned shaft system and require convenient lubrication and maintenance, such as metallurgical rolling mills, mining crushers, cement vertical mills, port cranes, heavy-duty reducers, and paper press rollers. It offers high rigidity, strong load-bearing capacity, self-aligning property, cylindrical bore direct installation compatibility, and supports online non-stop grease replenishment. The symmetrical spherical rollers can evenly distribute the load and compensate for ≤2° coaxiality deviation. The W33 lubrication structure of the outer ring is suitable for continuous lubrication under low to medium speed heavy-duty conditions, and is suitable for heavy-duty equipment shaft systems that require long-term stable operation and low maintenance costs, ensuring operational accuracy, reducing failure risks, and extending maintenance cycles. It is a key component for heavy-duty shaft systems to achieve efficient installation and long-life stable operation.