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1. 发明授权

US5427457A Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US5427457A
公开(公告)日：1995-06-27
申请号：US134588
申请日：1993-10-12
申请人： Kyozaburo Furumura , Yasuo Murakami , Nobuaki Mitamura , Shinichi Shirota , Shigeru Okita , Kazuo Sekino
发明人： Kyozaburo Furumura , Yasuo Murakami , Nobuaki Mitamura , Shinichi Shirota , Shigeru Okita , Kazuo Sekino
IPC分类号： C21D1/78 , C21D6/00 , C21D9/36 , C21D9/40 , C23C8/32 , C23C8/80 , F16C33/30 , F16C33/32 , F16C33/34 , F16C33/62 , F16C19/00
CPC分类号： F16C33/32 , C21D9/36 , C21D9/40 , C23C8/32 , C23C8/80 , F16C33/30 , F16C33/34 , F16C33/62 , C21D1/78 , C21D2211/001 , C21D6/002 , Y10S384/912 , Y10S384/913
摘要： An object of this invention is to provide a rolling bearing in which, as for the rolling elements, it is unnecessary to employ a high level heat treatment such as carburizing or carbonitriding which requires a long period of time to achieve, and which is sufficiently long in service life even when used with a lubricant containing foreign matters. In a rolling bearing, the amount of residual austenite (.gamma..sub.R vol %) in the surface layer of at least one of the inner and outer races is in a range of 25 to 40 vol %, and the surface hardness (Hv) thereof meets the following condition:-4.7.times.(.gamma..sub.R vol %)+900.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1000and the hardness of the rolling elements combined with the inner and outer races is higher by H.sub.R C 1 to 2 than that of the one of the inner and outer races.
摘要翻译：本发明的目的是提供一种滚动轴承，其中对于滚动元件，不需要采用需要较长时间来实现并且足够长的高渗透度或碳氮共渗的高水平热处理使用寿命即使与含有外来物质的润滑剂一起使用。在滚动轴承中，至少一个内圈和外圈的表层中的残余奥氏体量（γR vol％）在25〜40vol％的范围内，其表面硬度（Hv）满足以下条件：-4.7倍（γR vol％）+ 900

2. 发明授权

US5137375A Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US5137375A
公开(公告)日：1992-08-11
申请号：US699901
申请日：1991-05-14
申请人： Yasuo Murakami , Kyozaburo Furumura , Shinichi Shirota , Shigeru Okita
发明人： Yasuo Murakami , Kyozaburo Furumura , Shinichi Shirota , Shigeru Okita
IPC分类号： C21D9/36 , C22C38/00 , C22C38/44 , C23C8/38 , C23C8/80 , F16C33/30 , F16C33/62
CPC分类号： C21D9/36 , C23C8/80 , F16C33/30 , F16C33/62 , Y10S384/912
摘要： A rolling bearing having bearing rings and rolling members wherein at least one of the bearing rings and the rolling members essentially consists of an alloy steel which contains carbide-forming elements. The bearing rings and the rolling members are subjected to carburizing or carbo-nitriding and then hardening to form a rolling surface layer. The content of retained austenite (.gamma..sub.R vol %) in the rolling surface layer is from 20 to 45% by volume and the hardness (Hv) of the rolling surface layer reinforced by dispersion of fine carbides or carbonitrides with an average grain size of from 0.5 to 1.5 .mu.m with regard to the content of the retained austenite (.gamma..sub.R vol %) is within the range of:-4.7.times.(.gamma..sub.R vol %)+920.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1020.
摘要翻译：一种具有轴承环和滚动件的滚动轴承，其中至少一个轴承环和滚动件基本上由含有碳化物形成元件的合金钢组成。对轴承圈和滚动体进行渗碳或碳氮化，然后进行硬化以形成滚动表面层。滚动面层中的残留奥氏体含量（γR vol％）为20〜45体积％，通过将碳化硅或碳氮化钛的平均粒径分散而得到的滚动面层的硬度（Hv）相对于残留奥氏体（γR vol％）的含量为0.5〜1.5μm的范围为：-4.7×（γR vol％）+ 920

3. 发明授权

US06478894B1 Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US06478894B1
公开(公告)日：2002-11-12
申请号：US09358554
申请日：1999-07-22
申请人： Nobuaki Mitamura , Kazuo Sekino , Yasuo Murakami
发明人： Nobuaki Mitamura , Kazuo Sekino , Yasuo Murakami
IPC分类号： C22C3822
CPC分类号： F16C33/32 , F16C33/62 , F16C2360/24 , Y10T29/53104
摘要： At least any one of a bearing member (inner race, outer race and rolling element) is formed with a steel material containing 0.2 to 1.2 wt % of C, 0.7 to 1.5 wt % of Si, 0.5 to 1.5 wt % of Mo, 0.5 to 2.0 wt % of Cr, and 12 ppm or less of O. The bearing member is treated with carbonitriding, and thereafter, quenching and tempering so as to provide carbon concentration in the steel surface being 0.8 to 1.3 wt % and nitrogen concentration on the same being 0.2 to 0.8 wt %.
摘要翻译：轴承部件（内圈，外圈，滚动体）中的至少任一方形成有含有0.2〜1.2重量％的C，0.7〜1.5重量％的Si，0.5〜1.5重量％的Mo，0.5 2.0重量％的Cr和12ppm以下的O。将轴承部件用碳氮共渗处理，然后进行淬火回火，使钢表面的碳浓度为0.8〜1.3重量％，氮浓度为相同为0.2〜0.8重量％。

4. 发明授权

US5989694A Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US5989694A
公开(公告)日：1999-11-23
申请号：US877950
申请日：1997-06-17
申请人： Nobuaki Mitamura , Kazuo Sekino , Yasuo Murakami
发明人： Nobuaki Mitamura , Kazuo Sekino , Yasuo Murakami
IPC分类号： C22C38/22 , F16C33/30 , F16C19/49
CPC分类号： C22C38/22 , F16C33/30 , F16C33/62 , Y10S148/906 , Y10S384/907 , Y10S384/912 , Y10S384/913 , Y10T428/24942 , Y10T428/24983 , Y10T428/25
摘要： Disclosed is a rolling bearing comprising races and rolling elements, in which at least one of the races and the rolling elements has at least one of a carbide and a carbonitride precipitated in a surface layer thereof, inclusive of a cutting allowance, wherein the finished surface of at least one of the races and the rolling elements has a hardness of Hv600 to Hv700 at 300.degree. C. The rolling bearing has reliable wear resistance under severe conditions and thereby having an extended bearing life.
摘要翻译：公开了一种滚动轴承，其包括种族和滚动元件，其中至少一个种类和滚动元件具有在其表面层中析出的碳化物和碳氮化物中的至少一种，包括切割余量，其中成品表面的至少一个座圈和滚动元件在300℃下具有Hv600至Hv700的硬度。滚动轴承在恶劣条件下具有可靠的耐磨性，从而具有延长的轴承寿命。

5. 发明授权

US6152605A Ball bearing 失效
标题翻译：滚珠轴承
公开(公告)号：US6152605A
公开(公告)日：2000-11-28
申请号：US379748
申请日：1999-08-24
申请人： Hiromichi Takemura , Kazuo Sekino , Nobuaki Mitamura , Yasuo Murakami , Hiroshi Suzuki , Yoshitaka Hayashi
发明人： Hiromichi Takemura , Kazuo Sekino , Nobuaki Mitamura , Yasuo Murakami , Hiroshi Suzuki , Yoshitaka Hayashi
IPC分类号： F16C33/58 , F16C33/66
CPC分类号： F16C33/6685 , F16C33/585 , F16C33/6659 , F16C19/06
摘要： A ball bearing in which races are well prevented from flaking in early stages under an environment using lubricating oil having a high traction coefficient so that a long life of the ball bearing is attained, while the cost of the bearing is reduced. The ball bearing has a plurality of balls disposed between a fixed race and a rotating race, and the ball bearing is used under an environment using lubricating oil having a traction coefficient of 0.07 or more under the conditions that a slip factor is 5% and a temperature is 40.degree. C. At least the groove radius of the rotating race is set to be in a range of from 0.53 Dw to 0.58 Dw both inclusive when Dw designates the diameter of balls. In addition, the hardness of the race is set to be in a range of from HRC 58 to HRC 64 both inclusive.
摘要翻译：一种滚珠轴承，其中在使用具有高牵引系数的润滑油的环境下，在早期阶段很好地防止了种族脱落，从而在轴承的成本降低的同时实现了滚珠轴承的使用寿命长。滚珠轴承具有设置在固定座圈和旋转座圈之间的多个球，并且在滑动系数为5％的条件下，在具有0.07以上的牵引系数的润滑油的环境下使用滚珠轴承，温度为40℃。当Dw表示球的直径时，至少将旋转座圈的槽半径设定在0.53Dw〜0.58Dw的范围内。另外，将该种族的硬度设定在HRC58〜HRC64的范围内。

6. 发明授权

US5413643A Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US5413643A
公开(公告)日：1995-05-09
申请号：US242668
申请日：1994-05-13
申请人： Yasuo Murakami , Kazuo Sekino , Nobuaki Mitamura
发明人： Yasuo Murakami , Kazuo Sekino , Nobuaki Mitamura
IPC分类号： B32B15/01 , F16C33/30 , F16C33/62 , F16C33/64 , C22C38/18 , C21D9/36
CPC分类号： F16C33/62 , B32B15/011 , F16C33/30 , F16C33/64 , Y10S148/906 , Y10S384/912
摘要： A rolling bearing is disclosed, which comprises an inner ring, an outer ring, and rolling elements each composed of an alloy steel which are, after being subjected to a carburizing treatment or a carbonitriding treatment, subjected to quench-hardening and tempering or is subjected to quench-hardening or tempering, wherein the alloy steel contains from 0.10 to 1.00% by weight C, from 0.50 to 3.00% by weight Cr, from 0.15 to 1.00% by weight Si, from 0.2 to 1.50% by weight Mn, and rest being Fe and unavoidably intermixed impurities, the average amount of the retained austenite of at least the inner ring in the inner ring and the outer ring is not more than 4% by volume and the average amount of the retained austenite of the rolling elements is from 20 to 30% by volume.
摘要翻译：公开了一种滚动轴承，其包括内圈，外圈和各自由合金钢构成的滚动元件，其经过渗碳处理或碳氮共渗处理后进行淬火淬火回火或经受淬火或回火，其中合金钢含有0.10〜1.00重量％的C，0.50〜3.00重量％的Cr，0.15〜1.00重量％的Si，0.2〜1.50重量％的Mn，其余为是Fe和不可避免的混合杂质，内圈和外圈中的至少内圈的残余奥氏体的平均量不大于4体积％，滚动体的残余奥氏体的平均量来自 20〜30体积％。

7. 发明授权

US07137741B2 Rolling bearing 有权
公开(公告)号：US07137741B2
公开(公告)日：2006-11-21
申请号：US10310900
申请日：2002-12-06
申请人： Shinji Fujita , Youichi Matsumoto , Yasuo Murakami , Nobuaki Mitamura , Shigeru Okita
发明人： Shinji Fujita , Youichi Matsumoto , Yasuo Murakami , Nobuaki Mitamura , Shigeru Okita
IPC分类号： F16C33/58 , F16C33/32 , F16C33/00
CPC分类号： F16C33/30 , F16C33/62
摘要： A rolling bearing intended for longer life by improving seizure resistance and wear resistance in the circumstance with slip contact or in the circumstance where lubricant tends to be exhausted, which is manufactured by applying carburization or carbonitridation to an Si-added material to disperse and precipitate carbides or carbonitrides containing Si or Si—X (X=one or more of Mn, Mo, and Cr) thereby improving the seizure resistance and the wear resistance by the self-lubrication effect thereof, the size of the carbides or carbonitrides being preferably 10 μm or less for preventing flaking, and the area ratio for the carbides or carbonitrides being preferably 1.0–30% for obtaining sufficient self-lubrication effect.

8. 发明授权

US06342109B1 Rolling bearing 有权
标题翻译：滚动轴承
公开(公告)号：US06342109B1
公开(公告)日：2002-01-29
申请号：US09420836
申请日：1999-10-19
申请人： Hiromichi Takemura , Kazuo Sekino , Shigeru Okita , Yasuo Murakami
发明人： Hiromichi Takemura , Kazuo Sekino , Shigeru Okita , Yasuo Murakami
IPC分类号： C23C822
CPC分类号： F16C33/62 , F16C2240/54 , Y10S384/913
摘要： As a steel material for an inner race, an outer race and a rolling element constituting a rolling bearing, there is used one containing carbon (C) and chromium (Cr) in an amount of 0.65 wt % to 1.10 wt % and 2.0 wt % to 6.0 wt %, respectively. At least one of the inner race, the outer race and the rolling element is formed from the steel material. The inner race, outer race and the rolling element thus formed is then subjected to hardening, tempering and polishing. Further, a chromium oxide layer (Cr2O3) having a thickness of 5 nm to 300 nm is formed on a race track surface of at least one of the inner race, the outer race and the rolling element. If the rolling bearing is used in operation under the lubrication at a high traction coefficient with water mixed therein, finely particulate molybdenum carbide and/or vanadium carbide having a particle diameter of 50 nm to 300 nm is distributed in the matrix.
摘要翻译：作为构成滚动轴承的内圈，外圈和滚动体的钢材，使用含有0.65重量％〜1.10重量％的碳（C）和铬（Cr），2.0重量％至6.0重量％。内圈，外圈和滚动体中的至少一个由钢材形成。然后将如此形成的内圈，外圈和滚动元件进行硬化，回火和抛光。此外，在内圈，外圈和滚动体中的至少一个的座圈表面上形成有厚度为5nm〜300nm的氧化铬层（Cr 2 O 3）。如果在与水混合的高牵引系数的润滑下使用滚动轴承，则在基体中分布有粒径为50nm〜300nm的微细的碳化钼和/或碳化钒。

9. 发明授权

US5147140A Ball-and-roller bearing 失效
标题翻译：滚珠轴承
公开(公告)号：US5147140A
公开(公告)日：1992-09-15
申请号：US799437
申请日：1991-11-26
申请人： Yasuo Murakami , Shinichi Shirota , Shigeru Okita
发明人： Yasuo Murakami , Shinichi Shirota , Shigeru Okita
IPC分类号： F16C33/32 , C21D7/06 , C21D9/40 , C23C8/32 , F16C33/30 , F16C33/58 , F16C33/62
CPC分类号： C21D9/40 , F16C33/30 , F16C33/62 , Y10S384/912
摘要： A ball-and-roller bearing provided with a bearing ring and rolling element has the surface hardness of at least one of the bearing ring and rolling element of Hv 900 or more and the minimal compression residual stress of 100 kgf/mm.sup.2 or more in the depth from the surface of the bearing ring and/or rolling element to the depth equivalent to a 2% of the mean diameter of the rolling element and at the same time, the bearing is closely sealed to prevent any foreign particles from being ingressed thereinto, thus making possible a significant improvement of its longevity.
摘要翻译：设有轴承圈和滚动体的滚珠轴承具有Hv900以上的轴承环和滚动体中的至少一个的表面硬度，并且在最小的压缩残余应力为100kgf / mm 2以上的情况下从轴承圈和/或滚动元件的表面的深度到相当于滚动元件的平均直径的2％的深度，并且同时密封轴承以防止任何外来的颗粒进入其中，从而可以显着改善其寿命。

10. 发明授权

US4598914A Sealing and bearing means by use of ferrofluid 失效
标题翻译：密封和轴承方式使用铁磁流体
公开(公告)号：US4598914A
公开(公告)日：1986-07-08
申请号：US625046
申请日：1984-06-27
申请人： Kyozaburo Furumura , Hiromi Sugi , Yasuo Murakami , Hiromitsu Asai
发明人： Kyozaburo Furumura , Hiromi Sugi , Yasuo Murakami , Hiromitsu Asai
IPC分类号： F16C33/10 , F16J15/43 , G11B19/20 , F16J15/40 , F16C33/82 , F16J15/54
CPC分类号： F16C33/74 , F16C17/107 , F16C33/1035 , F16J15/43 , G11B19/20 , G11B19/2009 , F16C2370/12 , Y10S277/936 , Y10S277/939
摘要： Sealing and bearing means by use of ferrofluid, in which a magnet is utilized effectively in cooperation with grooves engraved on one surface thereof, the grooves having the function for generating the dynamic pressure of the ferrofluid. The ferrofluid is retained in a gap between a rotary shaft and a magnet of cylindrical or disc type enclosing the rotary shaft concentrically. The magnet performs excellent two functions of bearing and sealing respectively.
摘要翻译：通过使用铁磁流体的密封和轴承装置，其中磁体有效地与刻在其一个表面上的凹槽配合使用，所述凹槽具有产生铁磁流体的动态压力的功能。铁磁流体保持在旋转轴和圆周或圆盘形磁体同心地包围旋转轴之间的间隙中。磁铁分别具有优异的轴承和密封功能。

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