SKF 21309E Spherical Roller Bearing Open Type

SKF 21309E Spherical Roller Bearing Open Type is a cylindrical-bore bearing with a 45 mm bore, 100 mm outer diameter and 25 mm width, offered in an open, unsealed form with a steel cage and normal radial clearance (C0). The bore accepts a 45 mm shaft, and the open design means there are no seals or shields, enabling straightforward lubrication and inspection when mounted in compatible housings. This SKF bearing is designed to support substantial radial loads while accommodating shaft misalignment, a hallmark of spherical roller bearings in equipment subject to mounting tolerances and deflections. Typical applications include gearboxes, conveyors, crushers, and other heavy-duty machinery where an open bearing can be lubricated from an external source and inspection of the rolling elements is desired. The combination of robust races and rolling elements, along with the open configuration, makes it a common choice for installations requiring reliable radial load capacity without integrated sealing.