USRB5520E-307

USRB Mounted Spherical Roller Bearings Information

FEATURES AND BENEFITS DOUBLE ROW SPHERICAL ROLLER BEARING New geometries developed and manufactured by Sealmaster result in an innovative double-row spherical roller bearing with optimal load capacity, misalignment and speed capability.

MULTIPLE HOUSING CONFIGURATIONS ONE PIECE CAST IRON AND DUCTILE IRON HOUSINGS Durable one piece cast iron (USRB5000 series) and ductile iron (USRBE5000 series) housings provide load support. Two and four bolt pillow block housings have elongated bolt holes for interchangeability with competitive units. SPLIT HOUSINGS Durable Ductile iron split housings (USRB5500 series) designed to the industry standard SAF footprint and replaceable unitized bearing inserts from 1 3/8""- 8"" are shaft ready for easy installation.

MULTIPLE SEALING OPTIONS FELT SEAL The Sealmaster felt seal with flinger, mounted between races, is typically used in dryer conditions. The outer member rotates with the inner race to help direct contamination away from the seal. Due to the unique spherical geometric design of the seal contact areas, sealing effectiveness is maintained throughout the entire +/-2° of misalignment. This design provides a tight labyrinth seal, which acts as a filter to help exclude foreign material and has low friction.

CONTACT SEAL The Sealmaster double-lip contact seal, mounted between races, is typically used in wet applications. The outer member rotates with the inner race, to help direct contamination away from the seal. Due to the unique spherical geometric design of the seal contact areas, sealing effectiveness is maintained throughout the entire +/-2° of misalignment. The rotating double-lip seal design allows for exceptional limiting speed.

MULTIPLE LOCKING METHODS COLLAR MOUNT SYSTEM Sealmaster performance mounted roller bearings feature locking collars and setscrews at 120°, providing a balanced three-point contact.

ADAPTER MOUNT SYSTEM The Sealmaster performance mounted roller bearings grip the shaft with an advanced adapter mount system, for fast installation and removal. The advanced integral locking system incorporates axial cap screws that allow mount and dismount of the bearing from one side. The result: this highly engineered locking system requires less installation torque. Sealmaster adapter mount spherical roller bearings are also shaft ready and require only a hex key and torque wrench to install; no special tools or feeler gauges are required.

REPLACEABLE CARTRIDGE INSERT The Sealmaster performance mounted roller bearings have a replaceable cartridge insert that consists of a double-row spherical roller bearing with race-mounted seals. These integrally sealed, one-piece cartridge inserts can also be used for mounting in cylindrical-bore housings for an even wider range of applications.

WIDE OUTER RACE The wide outer race, coupled with innovative rolling-element geometries, provides increased load capacity. The wide outer race also allows for race mounted seals and creates a large internal grease chamber, for more grease capacity.

MISALIGNMENT The arrangement of rolling elements and races in Sealmaster Mounted Spherical Roller Bearings can accommodate +/-2 degrees of misalignment – up to twice an SAF – while maintaining catalog load ratings and sealing effectiveness. The spherical bearing design can accommodate both static and dynamic misalignment which may exist due to structure mounting irregularities, shaft deflection, or other application conditions.