CN104114886A - 滚动轴承 - Google Patents
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- 238000005096 rolling process Methods 0.000 claims abstract description 56
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims description 69
- 239000011248 coating agent Substances 0.000 claims description 67
- 239000002184 metal Substances 0.000 claims description 35
- 238000002955 isolation Methods 0.000 claims description 26
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 12
- 239000011224 oxide ceramic Substances 0.000 claims description 11
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 3
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 claims description 2
- 238000006263 metalation reaction Methods 0.000 claims description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 238000010292 electrical insulation Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
- F16C2206/02—Carbon based material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
- F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
- F16C2206/42—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/60—Thickness, e.g. thickness of coatings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
一种滚动轴承,其包括具有相应的滚动体滚道的金属内圈和金属外圈,以及多个在这些滚动体滚道上滚动的金属滚动体,其中,在外圈(2)和/或内圈(3)的滚道侧上和/或在滚动体(4)上设置有电绝缘层(11)。
Description
技术领域
本发明涉及一种滚动轴承,其包括具有相应的滚动体滚道的金属内圈和金属外圈,以及多个在这些滚动体滚道上滚动的金属滚动体。
背景技术
这种滚动轴承应用在各种不同的领域,此外,也在引导电流或产生电流方面应用,例如电机,其中,例如转子被滚动地支承。在这些应用中存在着在内圈与外圈之间产生电流流通(Stromdurchgang)的危险,其导致滚动轴承滚道损坏并且造成轴承寿命的缩短。虽然公知通过在轴承座与外圈之间施加附加的厚的覆层来使轴承组件电绝缘,为此例如根据DE 690 16 321 T2在轴承圈的外侧上施加塑料绝缘层。然而根据所需要的绝缘等级来计算,仅在较小轴承尺寸的情况下就为此产生了相对可观的额外成本。此外,该绝缘仅用于如下目的,即,在改进摩擦特性或防止磨损方面附加地采取措施。
发明内容
因此,基于这个问题本发明提出了一种滚动轴承,其一方面是充分绝缘的,但是另一方面,就摩擦特性和/或防止磨损而言也是改进的。
根据本发明,为解决该问题而在前文所述的类型的滚动轴承的情况中规定:在外圈和/或内圈滚道侧上、和/或在滚动体上设置有电绝缘层。
在根据本发明的滚动体中,特别有利的是:直接在滚动区域中设置电绝缘层,就是说也承受机械应力。绝缘层可以设置在外圈滚道侧上和/或设置在内圈滚道侧上,其中,就绝缘而言仅布置在轴承圈中的一个上就已经足够了。也就是说,在外圈上给内周面或在内圈上给其外周面配设这种绝缘层。备选地或附加地,滚动体在外侧也能够以绝缘层来铺覆,这同样提供了充分的电绝缘,但是在此绝缘层本身也滚动地承受应力。此外,如所实施的那样,因为在轴承运行中绝缘层本身承受机械应力,所以通过绝缘层的相应设计方案或相应的材料选择也可以利用该绝缘层实现摩擦特性改进和/或防止磨损。
为了充分的电绝缘,绝缘层应具有>200MΩ的电阻,电阻越大越好。此外,击穿电压应至少为200V,从该击穿电压起将发生击穿。
根据本发明的特别有利的改进方案,绝缘层由氧化物陶瓷形成,例如由Al2O3、SiO2、TiO2或ZrO形成,其中,该列举并不完全。该氧化物陶瓷一方面有很好的电绝缘,另一方面,其也示出了很好的、尤其是有利于防止磨损的机械特性。特别有利的是,该氧化物陶瓷层通过气相来离析,例如借助PVD工艺或PACVD工艺,因此可以充分薄且高品质地施加该氧化物陶瓷层。由于气相离析,利用这样的氧化物陶瓷层特别是也可以实现良好的摩擦特性。
在本发明的改进方案中,可以在滚动体的和/或内圈的、外圈的金属体与绝缘层之间设置有增附剂层,该增附剂层提供了绝缘层的,优选是所述的氧化物陶瓷层的良好的接合。
这样的增附剂层可以应用由金属、金属碳化物、金属氮化物、金属硼化物或金属硅化物形成的覆层,其中,对所应用的增附剂层材料的选择显然取决于要施加的绝缘层材料,尤其是要施加的氧化物陶瓷。
此外,必要时附加于增附剂层地可以设置有铺覆绝缘层的摩擦式的覆盖层,其也用于调整摩擦特性。该覆盖层可以是含金属含氢的无定形碳层、无金属含氢的无定形碳层或改性的含氢的无定形碳层,其中,该列举也并不完全。
总而言之,根据本发明的滚动轴承可以具有由增附剂层、绝缘层以及覆盖层构成的多层的覆层复合结构,从而在负载的滚动区域中直接设置有就电绝缘特性、摩擦特性以及抗磨损性而言优化了的覆层系统。
因为绝缘层优选通过气相来离析,所以显然适宜的是:即使优选利用相同的工艺,增附剂层和覆盖层在可行的情况下也同样通过气相来离析,从而在可能的情况下能够以直接地彼此顺次的工作流程来实现逐步的覆层构造。
绝缘层的覆层厚度应≤15μm,尤其≤10μm,这尤其在尤其是通过气相来构造氧化物陶瓷层时可以很容易地实现。如果附加地设置有增附剂层和/或覆盖层,那么多层覆层复合结构的整个厚度应为≤25μm,特别是≤20μm。
附图说明
在附图中示出了本发明的实施例并且在下文对其进行详细说明。其中:
图1示出根据本发明的滚动轴承的截面图;并且
图2示出图1的滚动轴承的内部涂覆的外圈的局部放大剖视图。
具体实施方式
图1示出根据本发明的径向轴承形式的滚动轴承1,其由外圈2、内圈3以及布置在它们之间的滚动体4构成,所述滚动体保持在保持架5中。外圈2具有滚动体滚道6并且内圈具有滚动体滚道7,保持在保持架5中的在这里为滚针形式的滚动体4在这些滚动体滚道上滚动。
两个滚动体滚道6、7中的至少一个和/或每个滚动体4的外侧配备有电绝缘层,该电绝缘层防止了从内圈3到外圈2或与其相反的电流流通,并且因此保护轴承免遭流过轴承的电流的损害。在示出的示例中呈现的是,如在图2中放大地示出的那样,该电绝缘层设置在外圈2的滚动体滚道6上。
图2示出由外圈2的金属体8以及多层的覆层系统9构成的外圈2的局部剖视图,该覆层系统设置成施加在滚道侧。
示出的覆层系统9一方面由增附剂层10构成,该增附剂层直接施加在外圈2的金属体8上。该增附剂层可以由金属、金属碳化物、金属氮化物、金属硼化物或金属硅化物形成。具体的材料选择取决于施加在该增附剂层10上的电绝缘层11所应用的材料。该电绝缘层11是特别高阻抗的,其具有>200MΩ的电阻。击穿电压应至少为200V。在此,优选是例如由Al2O3、SiO2、TiO2或ZrO形成的氧化物陶瓷层,其中,该列举并不完全。毫无疑问地,电绝缘层11也可以是多层覆层,该多层覆层可以由多个由不同的所谓的氧化物陶瓷材料形成的层来构成。通过电绝缘层11使得滚动轴承1在径向上观察是绝缘的,从而没有穿过轴承的电流流通。
电绝缘层11被摩擦式的(tribologisch)覆盖层12铺覆,其例如由含金属含氢的无定形碳层(a-C:H:Me)、无金属的含氢的无定形碳层(a-C:H)、或改性的含氢的无定形碳层(a-C:H)形成,其中,该覆盖层也可以是混合覆层或者说多层的覆层,其由两个或多个所述材料构成。该列举也并不完全。
整个覆层系统9承受滚动应力,也就是说,滚动体4直接在该覆层系统9上滚压。通过摩擦式的覆盖层12调整覆层系统9的摩擦特性,其直接影响滚动体4的滚动性能。在引导增附剂层10用于将覆盖层系统与外圈的金属体8固定连接期间,如描述的那样,电绝缘层11获得电流绝缘。
覆层系统9的整个覆层厚度应≤25μm,优选≤20μm,其中,绝缘层11不应厚于15μm,优选为≤10μm。
绝缘层12优选通过气相来离析,只要具体应用的覆层材料允许以气相来离析,那么在可能的情况下也同样适用于增附剂层10或覆盖层12。
虽然图2只描述了将覆层系统9布置在外圈2上,但是显而易见能想到的是,备选或附加地在内圈3的金属体上也就是说在它的滚道7上也设置有该覆层系统。毫无疑问地,不仅外圈2而且内圈3都能够以这样的覆层系统来铺覆。
备选地或附加地,滚动体4,也就是滚针也可以在外侧以该覆层系统9来铺覆。就待获得的绝缘特性、摩擦特性以及抗磨损性而言这也是有利的。
虽然图2只示出了包括三个所述覆层的覆层系统9的构造,但是显而易见也可行的是,例如仅施加绝缘层11,因此也就是说直接在相应构件的金属体上进行离析。在此,一方面提供了很好的绝缘,另一方面,显然通过例如氧化物陶瓷层形式的绝缘层也就已经可以实现特别高的抗磨损性以及良好的摩擦特性。那么,在该情况下仅提供了单覆层系统。双覆层系统的构造也是能想到的,例如通过增附剂层10或摩擦式的覆盖层12的附加离析。是否构造单覆层系统、双覆层系统或三覆层系统,最终依赖于滚动轴承1具体的使用目的。
虽然图1只示出了径向轴承,但是显而易见也能想到的是,将滚动轴承实施为轴向轴承。此外,本发明显然也并不局限于滚针轴承,确切的说,根据本发明最终可以配备各种滚动轴承类型。
附图标记列表
1 滚动轴承
2 外圈
3 内圈
4 滚动体
5 保持架
6 滚动体滚道
7 滚动体滚道
8 金属体
9 覆层系统
10 增附剂层
11 绝缘层
12 覆盖层
Claims (10)
1.滚动轴承,其包括具有相应的滚动体滚道的金属内圈和金属外圈,以及多个在这些滚动体滚道上滚动的金属滚动体,其特征在于,在所述外圈(2)和/或所述内圈(3)的滚道侧上和/或在所述滚动体(4)上设置有电绝缘层(11)。
2.根据权利要求1所述的滚动轴承,其特征在于,所述绝缘层(11)具有>200MΩ的电阻。
3.根据权利要求1或2所述的滚动轴承,其特征在于,所述绝缘层(11)由氧化物陶瓷形成。
4.根据权利要求3所述的滚动轴承,其特征在于,所述绝缘层(11)由Al2O3、SiO2、TiO2或ZrO形成。
5.根据上述权利要求中任一项所述的滚动轴承,其特征在于,在所述滚动体(4)的和/或所述内圈(3)的、所述外圈(2)的金属体(8)与所述绝缘层(11)之间设置有增附剂层(10)。
6.根据权利要求5所述的滚动轴承,其特征在于,所述增附剂层(10)由金属、金属碳化物、金属氮化物、金属硼化物或金属硅化物构成。
7.根据上述权利要求中任一项所述的滚动轴承,其特征在于,所述绝缘层(11)被摩擦式的覆盖层(12)铺覆。
8.根据权利要求7所述的滚动轴承,其特征在于,所述覆盖层(12)是含金属含氢的无定形碳层、无金属含氢的无定形碳层或改性的含氢的无定形碳层。
9.根据上述权利要求中任一项所述的滚动轴承,其特征在于,所述绝缘层(11)的覆层厚度≤15μm,尤其≤10μm,其中,在存在增附剂层(10)和/或覆盖层(12)的情况中,整个覆层厚度≤25μm,尤其≤20μm。
10.根据上述权利要求中任一项所述的滚动轴承,其特征在于,所述绝缘层(11)、所述增附剂层(10)和/或所述覆盖层(12)以PVD工艺或PACVD工艺来制造。
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DE102012202155A DE102012202155A1 (de) | 2012-02-14 | 2012-02-14 | Wälzlager |
DE102012202155.8 | 2012-02-14 | ||
PCT/EP2013/051126 WO2013120667A1 (de) | 2012-02-14 | 2013-01-22 | Wälzlager |
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CN104114886A true CN104114886A (zh) | 2014-10-22 |
CN104114886B CN104114886B (zh) | 2017-03-08 |
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CN201380009390.2A Expired - Fee Related CN104114886B (zh) | 2012-02-14 | 2013-01-22 | 滚动轴承 |
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US (1) | US9410578B2 (zh) |
EP (1) | EP2815143B1 (zh) |
CN (1) | CN104114886B (zh) |
DE (1) | DE102012202155A1 (zh) |
DK (1) | DK2815143T3 (zh) |
ES (1) | ES2627076T3 (zh) |
PT (1) | PT2815143T (zh) |
WO (1) | WO2013120667A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111492148A (zh) * | 2017-12-05 | 2020-08-04 | 舍弗勒技术股份两合公司 | 电绝缘的滚动轴承 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102013223677A1 (de) | 2013-11-20 | 2015-05-21 | Schaeffler Technologies AG & Co. KG | Wälzkörperkranz mit Sandwichblech |
JP7134639B2 (ja) | 2017-03-24 | 2022-09-12 | アクティエボラゲット・エスコーエッフ | 電気絶縁層を含む転がり軸受 |
DE102019104702A1 (de) * | 2019-02-25 | 2020-08-27 | Schaeffler Technologies AG & Co. KG | Lager |
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- 2013-01-22 CN CN201380009390.2A patent/CN104114886B/zh not_active Expired - Fee Related
- 2013-01-22 DK DK13700771.2T patent/DK2815143T3/en active
- 2013-01-22 PT PT137007712T patent/PT2815143T/pt unknown
- 2013-01-22 ES ES13700771.2T patent/ES2627076T3/es active Active
- 2013-01-22 WO PCT/EP2013/051126 patent/WO2013120667A1/de active Application Filing
- 2013-01-22 EP EP13700771.2A patent/EP2815143B1/de not_active Not-in-force
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CN111492148A (zh) * | 2017-12-05 | 2020-08-04 | 舍弗勒技术股份两合公司 | 电绝缘的滚动轴承 |
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Also Published As
Publication number | Publication date |
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US9410578B2 (en) | 2016-08-09 |
PT2815143T (pt) | 2017-05-22 |
EP2815143A1 (de) | 2014-12-24 |
EP2815143B1 (de) | 2017-03-15 |
DK2815143T3 (en) | 2017-06-19 |
WO2013120667A1 (de) | 2013-08-22 |
DE102012202155A1 (de) | 2013-08-14 |
US20150010262A1 (en) | 2015-01-08 |
ES2627076T3 (es) | 2017-07-26 |
CN104114886B (zh) | 2017-03-08 |
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