The invention herein comprises a kit and method that may be used to replace damaged and worn stabilizer bearings in both the Echo and Delta Apache helicopter. The kit includes a removal assembly that includes a bolt coupled to a cutting mechanism. Tightening of the bolt causes the cutting mechanism to cut the damaged and worn bearing from its housing. A staking mechanism is disclosed that allows the staking of a replacement bearing in the housing is provided. The staking assembly joins the replacement bearing to the housing so that it is tight. And, an installation assembly is disclosed that utilizes the bolt utilized in the cutting mechanism coupled to a hex nut.

A working machine includes a rear machine body on which an operator's seat is mounted, a front machine body to which a working tool is attached, a center shaft having a first axis extending in a fore-and-aft direction, a first supporting part supporting the center shaft rotatably relative to the rear machine body around the first axis, a coupling shaft having a second axis extending in a vertical direction and connected to the front machine body, and a second supporting part supporting the center shaft rotatably relative to the coupling shaft relative to the second axis. The first supporting part includes a first spherical plain bearing, and the first spherical plain bearing includes a first inner wheel including a convex curved sliding surface and provided on an outer circumferential surface of the center shaft, and a first outer wheel including a concave curved sliding surface and provided on the rear machine body.

A roller gear cam mechanism is equipped with a cam and a rotating member along the outer circumferential direction of which multiple bearings are arranged. The bearings are equipped with a shaft member and an outer ring portion capable of rotating around the shaft member. The outer circumferential surface of the outer ring portion has an arc shape, and in a cross section of the cam that includes the cam axis line, a contact portion of a cam rib making contact with the outer circumferential surface of the outer ring portion has an arc shape. The arc shape of the outer ring portion is formed so as to conform to the arc shape of the cam rib. The radius of curvature of the arc of the outer ring portion and the radius of curvature of the arc of the cam rib are determined in association with each other.

A seal includes an at least partially cylindrical annular body defining a radial direction, an axial direction, and a circumferential direction. The at least partially cylindrical annular body has a radially outer flange, a radially inner ring, and a resilient intermediate portion joining the radially outer flange to the radially inner ring. The radially outer flange defines a seal outer diameter and a flange axial thickness, and a ratio of the seal outer diameter to the flange axial thickness ranges from 14.0 to 15.0.

An inner half-ring of a spherical plain bearing has a spherical outer surface, a cylindrical inner surface, and a first flat front face and a second flat front face delimiting the half-ring in a circumferential direction. The first and second flat front faces extend between the outer surface and the inner surface, and a first central groove is formed in the first front face and extends between the outer surface and the inner surface.

A locking positioning system includes a bearing having an inner race and an outer race. The outer race is coupled to the inner race, and the outer race is to be coupled to a second structure. The locking positioning system includes a housing movably coupled to the inner race, and the housing is to be coupled to a first structure. The locking positioning system includes a lock ring coupled to the housing. The lock ring is movable between a first position, in which the inner race is held in a fixed position, and a second position, in which the inner race is movable to adjust a position of the second structure relative to the first structure.

The invention relates to a bearing arrangement having a radial spherical plain bearing with an inner ring (10), which is arranged on a bolt (15) or pin and has a spherical outer contour (12), and with an outer ring (20), which has a hollow spherical inner geometry (22) for receiving the inner ring (10) and an outer geometry (21) for mounting in a bearing seat (30), wherein the inner ring (10) and the outer ring (20) are preloaded against one another in an axial direction via at least one preloading device (41, 42).

A plain bearing unit includes a spherical bearing including an inner ring, the inner ring having a spherical outer surface, a bore and a groove formed in the bore, and an outer ring having a spherical inner surface mounted on the spherical outer surface of the inner ring. A sleeve is mounted in the bore of the inner ring of the spherical bearing and has an outer surface and a groove formed in the outer surface of the sleeve. A radially elastic retention ring extends inside the groove in the bore of the inner ring of the spherical bearing and extends inside the groove on the outer surface of the sleeve.

Hydraulic cylinders include a number of features that are useful in a number of industries. The great advantage telescopic cylinders have over any other type of cylinders is their ability to provide an exceptionally long stroke from a compact initial package. Controlling the extension and retraction of the stages of a telescoping cylinder mitigates mis-staging, which is an unwanted result of some telescoping cylinders. Spherical bearings at the end mount of cylinders, either telescoping or not, can be cleaned using scrapers, which will extend the life of the bearings in the field. The rods of cylinders, either telescoping or not, can also be cleaned with additional scrapers at key locations to further remove unwanted and potentially damaging material that can build up on the rods, such as due to the environment of use for the cylinders.

A bearing seat suitable for receiving a bearing includes an annular body, a first outer-radial flange and a second outer-radial flange. The annular body includes a peripheral wall. The peripheral wall has a first end, a second end, an inner matching surface and an outer surface. A thickness difference of the peripheral wall from the first end to the second end is within 30%. A portion of the inner matching surface is suitable for contacting and matching with an outer matching surface of the bearing. The first outer-radial flange protrudes from the outer surface adjacent to the first end and extends to the first end. The second outer-radial flange protrudes from the outer surface adjacent to the second end and extends to the second end. The overall structure of the bearing seat is uniform, which can reduce warpage and deformation caused by uneven shrinkage during the injection process.