Abstract:
A spherical roller bearing assembly (A) for installation on a dragline shaft (16 of an earth excavating device. The bearing assembly has a sealing arrangement and a closure arrangement to prevent the loss of lubricants from the bearing and to prevent the entrance of contaminants into the bearing. Seal carriers (10) attach contact lip seals (9) to the outer ring (2). An upper seal wear ring (5) and a lower seal wear ring (6) have wear surfaces that touch the contact lip seal (9) to form a seal. An upper closure ring (7) and a lower closure ring (8) resist the entrance of contaminants into the interior components of the bearing assembly (A).
Abstract:
A non-contact labyrinth seal assembly, bearing assembly therewith, and method of construction thereof, has an outer rigid carrier and an inner sleeve. The carrier has an outer cylindrical flange and a radially inwardly extending leg and the sleeve has a cylindrical wall and a radially outwardly extending flange. A body is attached to at least one of the leg and the flange, wherein the body provides, at least in part, a purely non-contact labyrinth passage extending between the carrier and the sleeve.
Abstract:
A bearing assembly for accommodating rotation about an axis includes an outer race (2) having a raceway (6) presented toward the axis and an inner race (4) having a raceway (8) presented toward the raceway (6) of the outer race (2) and forming a bore (12) there between. The inner race (4) includes at an end a sealing surface (20) that is inclined away from the raceways (6, 8) and toward the axis. Rollers (16) are arranged in a row between the outer raceway (6) and the inner raceway (8). A seal (22) closes the end of the bore (12). The seal (22) includes a seal case (24) supported by the outer race (2) at its end. A first sealing element (26) is carried by the seal case (24) and bears against the sealing surface (20) on the inner race (4) and forms a first stage sealing contact. A second sealing element (36) is carried by the seal case (24) and forms second stage sealing contact.
Abstract:
A spherical roller bearing assembly (A) for installation on a dragline shaft (16 of an earth excavating device. The bearing assembly has a sealing arrangement and a closure arrangement to prevent the loss of lubricants from the bearing and to prevent the entrance of contaminants into the bearing. Seal carriers (10) attach contact lip seals (9) to the outer ring (2). An upper seal wear ring (5) and a lower seal wear ring (6) have wear surfaces that touch the contact lip seal (9) to form a seal. An upper closure ring (7) and a lower closure ring (8) resist the entrance of contaminants into the interior components of the bearing assembly (A).