Abstract: An object of the invention is to provide a spindle apparatus which facilitates assembling and removing operations at the time of maintenance and which is low cost. In the invention, the diameter becomes smaller in the order of an inner peripheral diameter of an outer cylinder (3), an inside diameter of a stator (4), and an outside diameter of a bearing sleeve (11); a sub-assembly (2) made up of a front housing (8), a rotating shaft (6), and the bearing sleeve (11) is withdrawable from the outer cylinder (3); and the diameter of a rotating part in an arbitrary section located rearwardly of the bearing sleeve (11) is made smaller than a minimum diameter of a non-rotating part between a rear end of the bearing sleeve (11) and the section.

Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.

Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.

Abstract: The machine element selection support system comprises a database apparatus and a selection support server, while the selection support server is connected to a network. A customer, who wishes to select a machine element, gains access to the selection support server using a customer terminal.

Abstract: The present invention proposes a semiconductor device, its manufacturing method and to an electronic apparatus thereof equipped with the semiconductor device where it becomes possible to make a CMOS type solid-state imaging device, an imager area formed with a MOS transistor of an LDD structure without having a metal silicide layer of a refractory metal, an area of DRAM cells and the like into a single semiconductor chip. According to the present invention, a semiconductor device is constituted such that an insulating film having a plurality of layers is used, sidewalls at the gate electrodes are formed by etching back the insulating film of the plurality of layers or a single layer film in the region where metal silicide layers are formed and in the region where the metal silicide layers are not formed, sidewalls composed of an upper layer insulating film is formed on a lower layer insulating film whose surface is coated or the insulating film of the plurality of layers remain unchanged.

Abstract: The present invention proposes a semiconductor device, its manufacturing method and to an electronic apparatus thereof equipped with the semiconductor device where it becomes possible to make a CMOS type solid-state imaging device, an imager area formed with a MOS transistor of an LDD structure without having a metal silicide layer of a refractory metal, an area of DRAM cells and the like into a single semiconductor chip. According to the present invention, a semiconductor device is constituted such that an insulating film having a plurality of layers is used, sidewalls at the gate electrodes are formed by etchingback the insulating film of the plurality of layers or a single layer film in the region where metal silicide layers are formed and in the region where the metal silicide layers are not formed, sidewalls composed of an upper layer insulating film is formed on a lower layer insulating film whose surface is coated or the insulating film of the plurality of layers remain unchanged.

Abstract: The present invention proposes a semiconductor device, its manufacturing method and to an electronic apparatus thereof equipped with the semiconductor device where it becomes possible to make a CMOS type solid-state imaging device, an imager area formed with a MOS transistor of an LDD structure without having a metal silicide layer of a refractory metal, an area of DRAM cells and the like into a single semiconductor chip. According to the present invention, a semiconductor device is constituted such that an insulating film having a plurality of layers is used, sidewalls at the gate electrodes are formed by etchingback the insulating film of the plurality of layers or a single layer film in the region where metal silicide layers are formed and in the region where the metal silicide layers are not formed, sidewalls composed of an upper layer insulating film is formed on a lower layer insulating film whose surface is coated or the insulating film of the plurality of layers remain unchanged.

Abstract: A spindle unit comprises a rolling bearing including an outer ring having an outer ring raceway on an inner peripheral surface, an inner ring having an inner ring raceway on an outer peripheral surface, and rolling elements provided rollably between the outer ring raceway and the inner ring raceway, whereby a spindle is borne rotatably in a housing, and a grease supply system for supplying a grease to an inside of the rolling bearing, wherein the grease supply system supplies the grease such that a supply amount in one shot is set to 0.004 cc to 0.1 cc.

Abstract: A device for monitoring the operating conditions of a rolling bearing, has the rolling bearing including: an outer ring of a metal with outer raceway; an inner ring of a metal with an inner raceway; and a plurality of rolling elements; a first member electrically connected to the outer ring; a second member electrically connected to the inner ring; and a lubricant presented on the area at which the outer raceway and the inner raceway come in contact with the rolling surface of the rolling elements; wherein, the electrical characteristics between the outer ring or first member and the inner ring or second member are monitored in order to monitor the operating conditions of the rolling bearing operating with a lubricant and when the electrical characteristics thus monitored fall outside a predetermined range, the lubricating conditions are judged poor.

Abstract: An angular contact ball bearing includes an outer ring having an outer ring race formed on an inner surface thereof, an inner ring having an inner ring race provided on the outer surface thereof, a plurality of rolling elements provided between the outer ring and the inner ring, an annular cage for retaining the rolling elements, and seals provided on openings between the respective ends of the inner and outer rings. The cage is made of a synthetic resin material and is supported through the guide of the rolling elements. The cage includes a plurality of cylindrical pockets arranged peripherally for retaining the rolling elements and a reduced diameter portion formed at ends of the pocket for regulating the radial movement of the cage while being in contact with the rolling element.

Abstract: An object of the invention is to provide a spindle apparatus which facilitates assembling and removing operations at the time of maintenance and which is low cost. In the invention, the diameter becomes smaller in the order of an inner peripheral diameter of an outer cylinder (3), an inside diameter of a stator (4), and an outside diameter of a bearing sleeve (11); a sub-assembly (2) made up of a front housing (8), a rotating shaft (6), and the bearing sleeve (11) is withdrawable from the outer cylinder (3); and the diameter of a rotating part in an arbitrary section located rearwardly of the bearing sleeve (11) is made smaller than a minimum diameter of a non-rotating part between a rear end of the bearing sleeve (11) and the section.

Abstract: A grease replenishing device replenishes a grease-lubricated rolling bearing with a grease. The grease replenishing device has a storage chamber portion and a pressing member. The storage chamber portion stores the grease. The pressing member pushes the grease out of the storage chamber into an interior of the rolling bearing.

Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.

Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.

Abstract: The present invention proposes a semiconductor device, its manufacturing method and to an electronic apparatus thereof equipped with the semiconductor device where it becomes possible to make a CMOS type solid-state imaging device, an imager area formed with a MOS transistor of an LDD structure without having a metal silicide layer of a refractory metal, an area of DRAM cells and the like into a single semiconductor chip. According to the present invention, a semiconductor device is constituted such that an insulating film having a plurality of layers is used, sidewalls at the gate electrodes are formed by etchingback the insulating film of the plurality of layers or a single layer film in the region where metal silicide layers are formed and in the region where the metal silicide layers are not formed, sidewalls composed of an upper layer insulating film is formed on a lower layer insulating film whose surface is coated or the insulating film of the plurality of layers remain unchanged.

Abstract: An angular contact ball bearing includes an outer ring having an outer ring race formed on an inner surface thereof, an inner ring having an inner ring race provided on the outer surface thereof, a plurality of rolling elements provided between the outer ring and the inner ring, an annular cage for retaining the rolling elements, and seals provided on openings between the respective ends of the inner and outer rings. The cage is made of a synthetic resin material and is supported through the guide of the rolling elements. The cage includes a plurality of cylindrical pockets arranged peripherally for retaining the rolling elements and a reduced diameter portion formed at ends of the pocket for regulating the radial movement of the cage while being in contact with the rolling element.

Abstract: A bearing unit comprising a bearing having an inner ring, an outer ring and a plurality of rolling elements arranged so as to be freely rotatable between the inner ring and the outer ring, and a sealing device arranged on axially opposite sides of the bearing, wherein the sealing device has a fixed ring spacer, a rotating ring spacer, and a non-contact seal section attached to the rotating ring spacer and extending towards the fixed ring spacer to be maintained in a non-contact condition with respect to the fixed ring spacer.

Abstract: An angular contact ball bearing includes an outer ring having an outer ring race formed on an inner surface thereof, an inner ring having an inner ring race provided on the outer surface thereof, a plurality of rolling elements provided between the outer ring and the inner ring, an annular cage for retaining the rolling elements, and seals provided on openings between the respective ends of the inner and outer rings. The cage is made of a synthetic resin material and is supported through the guide of the rolling elements. The cage includes a plurality of cylindrical pockets arranged peripherally for retaining the rolling elements and a reduced diameter portion formed at ends of the pocket for regulating the radial movement of the cage while being in contact with the rolling element.

Abstract: A grease replenishing device replenishes a grease-lubricated rolling bearing with a grease. The grease replenishing device has a storage chamber portion and a pressing member. The storage chamber portion stores the grease. The pressing member pushes the grease out of the storage chamber into an interior of the rolling bearing.

Abstract: A grease-lubricated rolling bearing has an outer ring having an outer ring race in an inner peripheral surface thereof, an inner ring having an inner ring race on an outer peripheral surface thereof, rolling elements rollably provided between the outer ring race and the inner ring race, and a grease supply element for supplying an additional grease in the rolling bearing. The amount of the additional grease to be supplied at a time is predetermined to be from 0.1 to 4% of the volume of space in the bearing.