Abstract: A bearing constructed in accordance to one example of the present disclosure includes at least one inner bearing ring, at least one outer bearing ring, at least one rolling element and a direct metal deposition (DMD) raceway architecture. The DMD raceway architecture is disposed between the at least one inner and outer bearing rings. The DMD raceway architecture includes an inner DMD structure that defines an inner raceway and an outer DMD structure that defines an outer raceway. The inner and outer raceways are configured to support the at least one rolling element.

Abstract: An improved bearing assembly supports a pair of parts for movement relative to each other. The bearing assembly includes a plurality of rotatable bearing elements such as rollers, which engage raceways on the parts. The bearing elements are disposed in openings formed in a longitudinally extending cage member which separates the bearing elements. The cage member is supported by wear pads which engage at least one of the raceways. The bearing elements roll along a central portion of the raceway. Wear pads support the cage member. To minimize scraping or marking of the portion of the raceway engaged by the bearing elements, the wear pads engage opposite sides of the raceway. The wear pads extend through openings formed in the cage and can be readily disconnected from the cage to facilitate replacement.

Abstract: An apparatus, such as a crane, having a bearing for rotatably connecting two structures and transmitting radial, axial, rotational and moment forces from one to the other. The bearing is separably mounted to one of the structures by threaded fasteners, e.g., bolts, having piston means associated with the fasteners with the hydraulic system being pressurized during operation to establish proper uniform preloading of the fasteners for transmitting the load forces from one structure to the other.

Abstract: A material handling apparatus includes a base, an upper structure and a bearing for supporting the upper structure on the base for rotation about an axis. The bearing transmits radial, axial and moment forces from the upper structure to the base and has a first race connected to the upper structure and a second race movable as a unit with the first race. Means are provided for removably connecting as a unit the upper structure and bearing from the base and comprises a locking member, a lug and means for receiving the lug. Either the lug or the retaining means is fixed to the second race of the bearing and extends downwardly therefrom and the other is fixed to the bed. The retaining means has a pair of retainer portions which are spaced from each other to closely receive the lug therebetween. The locking member is slidably received in an opening through the lug and is removably received in apertures in the retaining portions.