Abstract: A cage for a rolling bearing has spreadable holding projections defining pockets for receiving rolling elements. In order to inhibit separation of the rolling elements from the cage after insertion of the rolling elements between the holding projections, the cage has deformable or spreadable cage portions positioned to be spreadable or deformed after insertion of the rolling elements in the cage, for supporting the adjacent holding projections against movement away from the adjacent rolling elements.

Abstract: An edge ring adapted to be mounted in an annular groove adjacent one axial end of a bearing ring. The edge ring is slit in at least one location about its periphery to define a separation joint. An insert member engages in the separation joint and is secured to the bearing ring to seat the edge ring in the annular groove. A bearing comprising inner and outer rings and a plurality of rolling elements in the annular space between the rings and at least one edge ring mounted in an annular groove at one axial end of one of the rings slit at least at one location to define a separation joint and including an insert member engaging in the separation joint and secured to the bearing ring to seat the edge ring in the annular groove.

Abstract: A conveyor belt roll assembly comprising a roll casing, a roll end mounted at opposite axial ends of the roll casing and a rolling bearing with a first bearing ring supported in the roll end and a second bearing ring secured in an axial direction by means of a ring member connected to the shaft. The roll end has a radially outwardly directed flange with corrugations at its outer edge extending in a peripheral direction and the ring member axially securing the bearing on the shaft is arranged outside of the bearing. The conveyor belt roll assembly further includes a radially outwardly directed disc fastened to the shaft and forming a radial sealing slot with the axial outer face of the roll end.

Abstract: A rotary drill bit having a drill bit body and at least one trunnion projecting from the drill bit body and a rotary cutter supported on at least one pair of radial rolling bearings on the trunnion. The rolling elements of at least one bearing are guided on at last one axial end facing the drill bit body in an outer bearing race groove incorporated in the bore of the rotary cutter. The inner bearing groove is formed on the trunnion for the rolling elements of the radial roller bearing. A filling opening is provided for assembly of the rolling elements comprising a channel which extends through the drill bit body and trunnion and is essentially axially oriented having one terminal end adjacent the inner bearing race groove and at least one filler piece for sealing the opening. The filling opening is arranged to provide a common filling means for each radial bearing.

Abstract: A rotary drill bit having a drill bit body and at least one trunnion projecting from the drill bit body and a rotary cutter supported on at least one radial roller bearing on the trunnion. The rolling elements of the bearing are guided on at least one axial end facing the drill bit body in an outer bearing race groove incorporated in the bore of the rotary cutter. The inner bearing race groove is formed on the trunnion for the rolling elements of the radial roller bearing. At least one filling opening is provided which extends through the drill bit body and trunnion and is essentially axially oriented having one terminal end adjacent the inner bearing race groove and at least one filler piece for sealing the opening.

Abstract: A rotary drill bit assembly comprising a trunnion and at least one rotary cutter mounted on the trunnion. The trunnion is supported by bearings including at least one radial bearing and at least one axial roller bearing. The axial bearing is comprised of conical rollers and one of the races for this bearing is disposed perpendicular to the axis of rotation of the rotary cutter and the complementary bearing race is conical. A guide rim is associated with one of the bearing races which guides the conical rollers in a radially outward direction.

Abstract: A rotary drilling bit with conically shaped rotary cutters which are supported in bearings on the drilling bit body by a plurality of bearings. At least one seal is provided in each rotary cutter for separating the bearing cavities of the bearings.

Abstract: A sliding seal ring for a drill bit comprising at least one cutter rotatably mounted on a journal forming part of the drill bit body. The seal ring is made of elastic metallic strip material and is of spiral configuration with the spirals in overlapping relation. The seal ring is mounted under axial tension between the pocket in an edge ring and the drill bit body and rotates with the cutter. In one form of the invention, the spirals are in abutting relation to provide a complete seal. In another form the spirals are open to define gaps permitting flow of flushing liquid to cool and lubricate the bearings supporting the cutter on the trunnion.

Abstract: Mechanism for axially shifting an anti-friction bearing mounted in a bore of a housing extension or the like. The mechanism comprises an annular member such as the outer ring of the bearing mounted in the bore which has at least one radially outwardly directed protrusion engaging through an axial slit in the housing extension. The extension has external screw threads adjacent the axial slits to receive locking nuts on either side of the protrusion to fix the annular member in a selected position relative to the extension.

Abstract: A rotary drill bit having a plurality of cutters, each rotatably mounted on a trunnion. The bearing support includes a friction bearing consisting of a cup member of half-moon shape preferably made of an oil soaked sintered material. The outer surface of the cup engages the bore of the cutter and forms the non-loaded part of the slip surface in the unloaded zone of the friction bearing. The cup is mounted in a manner retaining the cutter against axial displacement from the trunnion. Biasing means between the cup and trunnion presses the cup against the cutter bore and compensates for wear of the cup.

Abstract: A clutch thrust bearing has thin-walled bearing members formed to define a race therebetween for receiving rolling bearing elements. One of the bearing members has a generally radially extending central wall portion, and an axially extending annular wall portion, the center portion defining one wall of the race and the axially extending portion extending away from the other bearing member. The one bearing member further includes a second thin-walled portion on the side of the bearing away from the other member, and axially spaced from the center wall portion of the same member. This thin-walled portion has a central depression for receiving thrust loads on the bearing, and the outer walls of this portion extend axially and are telescoped with the first mentioned axially extending wall. An elastic member is provided between the two center portions of the one member, and may be in the form of a split ring or an elastic material.

Abstract: A clutch release bearing including cooperative inner and outer race rings with included rolling elements, and a holding ring having a first flange closely adjacent and facing a second flange of one of said rings, one of said two flanges having spiral grooves or other means for providing with a fluid hydraulic pressure between said flanges, thereby urging said inner and outer race rings together for maintaining a generally fixed axial relationship between them.

Abstract: A self-centering clutch thrust bearing with a resilient ring between the bore of the bearing and a sliding sleeve for damping radial play therebetween.