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31. 发明专利

JP2004011766A BEARING DEVICE 审中-公开
公开(公告)号：JP2004011766A
公开(公告)日：2004-01-15
申请号：JP2002166025
申请日：2002-06-06
申请人： NSK LTD
发明人： SHIROSAKI YOSHIHIKO , SATO YUKIO
IPC分类号： F16C37/00 , F16C33/66
摘要： PROBLEM TO BE SOLVED: To provide a bearing device durable to use under high speed conditions by directly cooling a bearing to restrict the temperature rise at the bearing. SOLUTION: This bearing device 10 includes the bearing 12, and a bearing housing 11 where the bearing 12 is installed, and it is provided with a bearing cooling mechanism 13 lubricated by solid lubricant disposed in a bearing space in the bearing 12 to cool the bearing housing 11. A cooling medium injection mechanism 13 is provided with a pair of nozzles 28 and 28. The nozzles 28 and 28 are disposed above and around a top bearing housing 15 of the bearing housing 11, and their injection direction is directed to an outer ring support part 17 of the top bearing housing 15. The nozzles 28 and 28 are communicated with/connected to an unillustrated cooling medium supply device. As rotation of a main shaft 27 is started, cooling medium is supplied from a cooling medium supply device, and the cooling medium is jetted toward the surface of the upper bearing housing 15. COPYRIGHT: (C)2004,JPO

32. 发明专利

JP2003194066A ROLLER BEARING 审中-公开
公开(公告)号：JP2003194066A
公开(公告)日：2003-07-09
申请号：JP2001399806
申请日：2001-12-28
申请人： NSK LTD
发明人： SHIROSAKI YOSHIHIKO , SATO YUKIO
IPC分类号： F16C33/46
摘要： PROBLEM TO BE SOLVED: To provide a roller bearing capable of preventing damages such as seizure, scuffing, etc. SOLUTION: The roller bearing 10 is structured so that a recess 17 is formed at least at one of the mating surface 15a of its flange 15 confronting a retainer 14 and a guide surface of the retainer 14 guided by the mating surface 15a. COPYRIGHT: (C)2003,JPO

33. 发明专利

JP2002054640A ROLLING BEARING 失效
公开(公告)号：JP2002054640A
公开(公告)日：2002-02-20
申请号：JP2000241240
申请日：2000-08-09
申请人： NSK LTD
发明人： FUKUDA KUNIO , HONDA AKIYOSHI , UNNO TETSURO , SHIROSAKI YOSHIHIKO
IPC分类号： F16C33/58 , F16C19/38
摘要： PROBLEM TO BE SOLVED: To provide a rolling bearing capable of effectively controlling occurrence of fretting. SOLUTION: A rotation shaft 1 and an inner ring 10 have dimensions in diameter directions to have a play when they are fitted and crowning parts 10e, 10f are formed on a inner circumference close to an end part of the inner ring 10 to reduce an edge load on the inner ring 10. Consequently, occurrence of fretting on a contact surface of the inner ring 10 and the rotation shaft 1 can be controlled without applying grease, performing surface treatment or the like.

34. 发明专利

JP2001255212A TEMPERATURE DETECTOR FOR SHAFT SUPPORTING MECHANISM 失效
公开(公告)号：JP2001255212A
公开(公告)日：2001-09-21
申请号：JP2000067352
申请日：2000-03-10
申请人： NSK LTD
发明人： SHIROSAKI YOSHIHIKO , SATO YUKIO , SAKAGUCHI KAZUTOSHI
IPC分类号： G01K1/14 , F16C13/02 , F16C19/52 , F16F1/12 , G01K7/02 , G01K7/32 , G01K13/08
摘要： PROBLEM TO BE SOLVED: To provide a temperature detector for a shaft supporting mechanism capable of accurately detecting the temperature of an outer ring of a rolling bearing in a reliable manner even if the bearing is axially moved by thermal expansion or contraction of a shaft body. SOLUTION: This temperature detector for the shaft supporting mechanism is used to detect the temperature of the mechanism having the bearing for rotatably supporting the shaft body on the fixed side, and is equipped with a temperature detection part 60 for detecting the temperature of the object of temperature detection by causing its end part to abut on the object, a temperature detector body 61 mounted on the fixed side and slidably supporting the detection part 60, slide surface sealing parts 62, 63 for sealing up a gap between the detection part 60 and the detector body 61, and an elastic means 67 for energizing the detection part 60 with a substantially constant force at all times in a direction projecting from the detector body 61. When the bearing is axially moved, the detection part 60 moves forward or backward to follow the bearing while the gap left by the detector body 61 is sealed up, thus maintaining the contact state of the end 60a of the detection part 60 with the bearing.

35. 发明专利

JP2001200855A ROLLING BEARING 失效
公开(公告)号：JP2001200855A
公开(公告)日：2001-07-27
申请号：JP2000013874
申请日：2000-01-18
申请人： NSK LTD
发明人： FUKUDA KUNIO , HONDA AKIYOSHI , UNNO TETSURO , SHIROSAKI YOSHIHIKO
IPC分类号： F16C33/58 , F16C33/66
摘要： PROBLEM TO BE SOLVED: To provide a rolling bearing capable of effectively restraining the occurrence of fretting in spite of a relatively low cost. SOLUTION: Since lubricating oil oozes out of a solid lubricant A in an inner peripheral groove 10c to permeate and interpose between an inner peripheral surface of an inner race 10 and an outer peripheral surface of a rotary shaft 1, even if vibration is caused in a contact surface, the fretting can be effectively restrained by relieving bearing at that time. Particularly, since the fretting has a tendency of becoming remarkable in an end part area, the inner peripheral groove 10c is desirably extended to the both end vicinity of the inner race 10. The lubricating oil impregnated into the solid lubricant A can move along the inner peripheral groove 10c to a certain degree to restrain a malfunction such as lacking in lubrication only in a specific place.

36. 发明专利

JP2001165158A SELF-ALIGNING ROLLER BEARING 失效
公开(公告)号：JP2001165158A
公开(公告)日：2001-06-19
申请号：JP35427499
申请日：1999-12-14
申请人： NSK LTD
发明人： HONDA AKIYOSHI , FUKUDA KUNIO , UNNO TETSURO , SHIROSAKI YOSHIHIKO
IPC分类号： F16C23/08 , F16C33/46
摘要： PROBLEM TO BE SOLVED: To provide a self-aligning roller bearing capable of performing skew control of rollers without using a guide ring. SOLUTION: Since protrusions 41c, 42c of a cage 40 abut on the end faces 30a of rollers 30 to guide the rollers 30, skew control can be performed without providing a guide ring, and since radial outer ends 41d, 42d of the cage 40 abut on an outer ring raceway surface 20a of an outer ring 20, radial positioning of the cage 40 can be performed to ensure the stable action of the self-aligning roller bearing.

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