摘要:
A bearing (12) is mounted to a hollow shaft provided to a hub wheel (11). A shaft end of the hollow shaft (14) is deformed radially outward and caulked to an outer end face of an inner ring of the bearing. Between a first area in which a spline portion is formed and a second area in which a caulked portion (14a) is formed between a bending starting point for bending the shaft end radially outward and an end face of the shaft end on an inner peripheral face of the hollow shaft, a third area for suppressing deformation of the inner peripheral face of the hollow shaft caused by the caulking is formed. The third area (143) cushions deformation in the first area.
摘要:
In a heat treatment wherein a blank to be used in the manufacture of bearing is (intermediate material) formed with a lubrication hole is heated and quenched, the quenching of the blank is terminated at the point of time that a temperature at a portion corresponding to a depth from a raceway surface (surface of a bearing part) of an outer ring (the bearing part), to which depth the maximum shear stress affects, is lowered to an MS point.
摘要:
A seal ring (2) attached to a shoulder portion of a bearing ring of a rolling bearing (1), and including an annular body (4), a pulsar ring (6) bonded to a required position of the annular body (4) by vulcanization forming, a first lip (61) made of magnetized rubber and formed integrally with one surface of the pulsar ring (6) and a second lip (42) bonded to the other surface of the pulsar ring (6) by vulcanization molding.
摘要:
In a bearing apparatus having a bearing (12) and a shaft body (11), the bearing being mounted to the shaft body such that the bearing (12) fits an outside of the shaft body (11), the bearing being prevented from dropping off by holding a caulked portion (13) against an outer end face of an inner ring of the bearing, and the caulked portion being formed by bending a cylindrical portion to be caulked of the shaft body outward in a diameter direction, an axial force controlling method controls an axial force applied to the bearing through the caulked portion by setting a relationship between relative positions (A,B) in an axial direction of an end edge on an inner periphery side of a chamfered portion formed at an inner peripheral shoulder portion of the inner ring and a caulking starting point on an inner periphery side of a cylindrical portion to be caulked.
摘要:
A process for producing a bearing component having a surface hardness of 63 to 67 in terms of Rockwell hardness C and a surface retained austenite content of at least 20 % to less than 25 % including a step of carburizing and quenching a bearing component workpiece prepared from a carburizing steel having a carbon content of 0.1 to 1.0 weight % carbon and machined to a predetermined shape, a step of subjecting the resulting workpiece to a preliminary tempering treatment by maintaining the workpiece at 110°C to 130°C for at least one hour, a step of subjecting the tempered workpiece to a sub-zero treatment by maintaining the workpiece at -50°C to -80°C for at least one hour, and a step of subjecting the treated workpiece to a main tempering treatment by maintaining the workpiece at 140°C to 175°C for at least two hours.
摘要:
A bearing (12) is mounted to a hollow shaft provided to a hub wheel (11). A shaft end of the hollow shaft (14) is deformed radially outward and caulked to an outer end face of an inner ring of the bearing. Between a first area in which a spline portion is formed and a second area in which a caulked portion (14a) is formed between a bending starting point for bending the shaft end radially outward and an end face of the shaft end on an inner peripheral face of the hollow shaft, a third area for suppressing deformation of the inner peripheral face of the hollow shaft caused by the caulking is formed. The third area (143) cushions deformation in the first area.
摘要:
In a bearing apparatus having a bearing (12) and a shaft body (11), the bearing being mounted to the shaft body such that the bearing (12) fits an outside of the shaft body (11), the bearing being prevented from dropping off by holding a caulked portion (13) against an outer end face of an inner ring of the bearing, and the caulked portion being formed by bending a cylindrical portion to be caulked of the shaft body outward in a diameter direction, an axial force controlling method controls an axial force applied to the bearing through the caulked portion by setting a relationship between relative positions (A,B) in an axial direction of an end edge on an inner periphery side of a chamfered portion formed at an inner peripheral shoulder portion of the inner ring and a caulking starting point on an inner periphery side of a cylindrical portion to be caulked.
摘要:
A bearing device in which a rolling bearing is fitted on one axial end of a shaft and in which the one axial end of the shaft is caulked to fix the rolling bearing while preventing the same from coming out. The shape of the outer end face of the caulked portion is devised to maximize the resistance to the coming-out by the caulked portion.
摘要:
A process for producing a bearing component having a surface hardness of 63 to 67 in terms of Rockwell hardness C and a surface retained austenite content of at least 20 % to less than 25 % including a step of carburizing and quenching a bearing component workpiece prepared from a carburizing steel having a carbon content of 0.1 to 1.0 weight % carbon and machined to a predetermined shape, a step of subjecting the resulting workpiece to a preliminary tempering treatment by maintaining the workpiece at 110°C to 130°C for at least one hour, a step of subjecting the tempered workpiece to a sub-zero treatment by maintaining the workpiece at -50°C to -80°C for at least one hour, and a step of subjecting the treated workpiece to a main tempering treatment by maintaining the workpiece at 140°C to 175°C for at least two hours.