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

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。

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。

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％。

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％。

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。

公开(公告)号：US06171414B2

公开(公告)日：2001-01-09

申请号：US09098980

申请日：1998-06-17

申请人： Nobuaki Mitamura ,  Kazuo Sekino ,  Takaaki Koike ,  Yukio Takahashi ,  Mikio Yamaguchi

发明人： Nobuaki Mitamura ,  Kazuo Sekino ,  Takaaki Koike ,  Yukio Takahashi ,  Mikio Yamaguchi

IPC分类号： C22C3818

CPC分类号： F16C33/30 ,  F16C33/62 ,  F16C2360/24 ,  Y10S384/912

摘要： A rolling bearing comprises races including an inner race and an outer race formed of an alloy steel material; and a plurality of rolling elements formed of a ceramic material and interposed between the inner race and the outer race in such a manner as to be capable of rolling, wherein at least one of the inner race and the outer race is formed of an alloy steel containing 0.7-1.5 wt. % Si, 0.5-2.0 wt. % Cr, and 0.5-2.0 wt. % Mo in a steel, and is subjected to carbonitriding treatment on the surface of the alloy steel material. The rolling bearing excels in the durability and heat resistance even if it is used in a high-temperature high-speed environment, and does not cause a noise fault.

摘要翻译： 滚动轴承包括由合金钢材料形成的内圈和外圈的座圈; 以及多个由陶瓷材料形成的滚动元件，其以能够滚动的方式插入在所述内座圈和所述外座圈之间，其中所述内圈和所述外座圈中的至少一个由合金钢 含有0.7-1.5重量％ ％Si，0.5-2.0wt。 ％Cr和0.5-2.0wt。 ％Mo，对合金钢材的表面进行碳氮共渗处理。 即使在高温高速环境下使用时，滚动轴承的耐久性和耐热性也优异，不会产生噪音故障。

公开(公告)号：US06869222B1

公开(公告)日：2005-03-22

申请号：US09719948

申请日：2000-05-09

申请人： Shigeru Okita ,  Kazuo Sekino ,  Toyohisa Yamamoto ,  Susumu Tanaka ,  Hiroyuki Ito ,  Akira Uchida ,  Kazuhiro Fujiu

发明人： Shigeru Okita ,  Kazuo Sekino ,  Toyohisa Yamamoto ,  Susumu Tanaka ,  Hiroyuki Ito ,  Akira Uchida ,  Kazuhiro Fujiu

IPC分类号： F04D29/06 ,  F16C19/08 ,  F16C19/16 ,  F16C19/18 ,  F16C33/30 ,  F16C33/38 ,  F16C33/41 ,  F16C33/44 ,  F16C33/66 ,  F16C19/00 ,  F16C33/58

CPC分类号： F16C33/425 ,  F04D29/063 ,  F16C19/06 ,  F16C19/08 ,  F16C19/163 ,  F16C33/30 ,  F16C33/414 ,  F16C33/416 ,  F16C33/44 ,  F16C33/6633 ,  F16C33/6688 ,  F16C2204/70 ,  F16C2240/34 ,  F16C2360/45

摘要： A full complement angular ball bearing with no cage and having a contact angle from 10 to 45° and an increased number of balls for use under severe conditions. The life is extended by defining the surface roughness of the inner ring and the outer ring, defining the roughness ratio of them relative to the rolling element, defining the Cr content in the alloy steel for the rolling element, forming the rolling element with oxide ceramics, or providing a dense nitride layer on the surface of the rolling element, avoiding the presence of particles with a mean diameter in excess of 3 μm on the raceway surfaces of the outer ring and the inner ring, or coating a film of a hardness higher than that of the raceway surface of the outer ring and the inner ring on the surface of the rolling element.

摘要翻译： 一个满载的角接触球轴承，不带保持架，接触角为10至45°，并且在恶劣条件下使用的球数增加。 通过限定内圈和外圈的表面粗糙度来确定其相对于滚动元件的粗糙度比的滚动体的寿命延长，限定用于滚动元件的合金钢中的Cr含量，用氧化物陶瓷形成滚动元件 或在滚动体的表面上设置致密的氮化物层，避免在外圈和内圈的滚道表面上存在平均直径超过3μm的颗粒，或者涂覆硬度更高的膜 比外圈的滚道面和滚动体的表面上的内圈高。

公开(公告)号：US06357924B1

公开(公告)日：2002-03-19

申请号：US09601792

申请日：2000-08-08

申请人： Hiromichi Takemura ,  Yasuo Murakami ,  Kazuo Sekino

发明人： Hiromichi Takemura ,  Yasuo Murakami ,  Kazuo Sekino

IPC分类号： F16C3362

CPC分类号： F16C33/30 ,  C21D9/40 ,  C22C38/34 ,  F16C33/62

摘要： A rolling bearing 1 in which a plurality of rolling elements 4 are disposed between bearing rings comprising a fixed ring 2 and a rotational ring 3 intended for prolonging the rolling life of a rolling bearing used at high temperature, large vibrations and heavy load such as in engine auxiliaries, wherein a tempering treatment is applied after quenching to at least one of the fixed ring 2 or the rotational ring 3 containing: C=0.65-1.25%, Si=0.7-2.5%, Cr=0.5-3.0% and containing at least one of: Mo=0.5-3.0% and Ti=0.05-0.5%, to dispersingly precipitate Mo type carbides or Ti type carbide of 50 to 300 nm size finely, to obtain a hydrogen trapping effect with the Mo type or Ti type carbides at the rolling surface thereby suppressing and preventing intrusion of hydrogen in the vicinity of the maximum shearing stress position, as well as suppressing and preventing occurrence and extension of fine initial cracks by the dispersing precipitation of the fine Mo type carbides.

摘要翻译： 一种滚动轴承1，其中多个滚动元件4设置在包括固定环2和旋转环3的轴承环之间，用于延长在高温下使用的滚动轴承的滚动寿命，大的振动和较重的载荷，例如 发动机辅助设备，其中在淬火之后对至少一个固定环2或旋转环3施加回火处理，该固定环2或旋转环3包含：C = 0.65-1.25％，Si = 0.7-2.5％，Cr = 0.5-3.0％ Mo = 0.5-3.0％和Ti = 0.05-0.5％中的至少一种，以使Mo型碳化物或50〜300nm尺寸的Ti型碳化物微细地分散析出，以获得Mo型或Ti型碳化物的捕集氢捕集效果 在轧制面上抑制和防止氢在最大剪切应力位置附近的侵入，并且通过微细Mo型碳化物的分散沉淀来抑制和防止细小的初始裂纹的发生和延伸。

公开(公告)号：US5997661A

公开(公告)日：1999-12-07

申请号：US903723

申请日：1997-07-31

申请人： Yoichi Matsumoto ,  Takashi Nagato ,  Kazuo Sekino

发明人： Yoichi Matsumoto ,  Takashi Nagato ,  Kazuo Sekino

IPC分类号： F16C33/32 ,  C22C38/00 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  F16C33/62 ,  C23C8/22 ,  C23C8/32

CPC分类号： C22C38/42 ,  C22C38/44 ,  F16C33/62 ,  Y10S148/906 ,  Y10S384/912

摘要： A rotating shaft 4 is attached to an inner race 1, and an outer race 2 is fixed to a housing 5 so that the bearing is operated by the rotation of the rotating shaft 4. In this case, the inner race 1 is made to be the race on the rotating side, and the outer race 2 is made to be the race on the non-rotating side. The raw material composing the inner race 1, outer race 2 and rollers 3 is manufactured from alloy steel containing 4.5 weight % or less of Ni, and 0.5 weight % or less of Cu, and the average value of the Cu equivalent of the rollers 3 and the inner race 1 is set at a value higher than the Cu equivalent of the outer race 2. Thus, even in humid environments where water infiltrates into the lubricant, it is possible to make the rolling bearing have the same durable life as with rolling bearings which are used in normal environments. Accordingly, it is possible to provide rolling bearings endowed with superior durable life from the electrochemical viewpoint even when water infiltrates into the bearing lubricant.

摘要翻译： 旋转轴4安装在内座圈1上，外座圈2固定在壳体5上，使得轴承通过旋转轴4的旋转而动作。在这种情况下，内圈1成为 旋转侧的座圈和外圈2成为非旋转侧的座圈。 构成内圈1，外圈2和辊3的原料由含有4.5重量％以下的Ni和0.5重量％以下的Cu的合金钢制成，辊3的Cu当量的平均值 并且内圈1被设定为高于外圈2的Cu当量的值。因此，即使在水浸入润滑剂的潮湿环境中，也可以使滚动轴承具有与滚动相同的耐用寿命 在正常环境中使用的轴承。 因此，即使在水渗透到轴承润滑剂中的情况下，也可以提供从电化学观点来看具有优异的耐用寿命的滚动轴承。