JPS62194025A - Magnetic bearing - Google Patents
Magnetic bearingInfo
- Publication number
- JPS62194025A JPS62194025A JP3193386A JP3193386A JPS62194025A JP S62194025 A JPS62194025 A JP S62194025A JP 3193386 A JP3193386 A JP 3193386A JP 3193386 A JP3193386 A JP 3193386A JP S62194025 A JPS62194025 A JP S62194025A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- magnetic bearing
- abnormality
- magnetic
- radial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 230000007257 malfunction Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 abstract 3
- 238000001514 detection method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- F16C39/00—Relieving load on bearings
- F16C39/02—Relieving load on bearings using mechanical means
-
- 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
- F16C19/50—Other types of ball or roller bearings
- F16C19/507—Other types of ball or roller bearings with rolling elements journaled in one of the moving parts, e.g. stationary rollers to support a rotating part
-
- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、励磁巻線を巻いた磁気軸受継鉄を軸受箱に取
付け、該軸受継鉄とその内側に軸と一体にして配設され
た回転子との間に磁気吸引力を働かせて軸受作用を行わ
せるようにしたラジアル磁気軸受に関し、ラジアル軸受
として広く用いられる。この種の磁気軸受は、半径方向
変位検出器を備え、該変位検出器の出力信号を制御回路
に導入し、制御電流を励磁巻線に供給し【前記軸受継鉄
と回転子間で軸受作用な受けらせるようになっている。[Detailed Description of the Invention] (Industrial Application Field) The present invention is directed to a magnetic bearing yoke having an excitation winding wound thereon, which is attached to a bearing box, and which is disposed integrally with the shaft inside the bearing yoke. The radial magnetic bearing is widely used as a radial bearing, and is designed to perform a bearing action by exerting a magnetic attraction force between the rotor and the rotor. This type of magnetic bearing is equipped with a radial displacement detector, and the output signal of the displacement detector is introduced into a control circuit, and a control current is supplied to the excitation winding. It's designed to make you feel that way.
(従来の技術)
従来のラジアル磁気軸受は、第3図に示すように、軸受
箱10の内側に取付けられた軸受継鉄1に、励磁巻線2
を巻付け、該軸受継鉄1の内側には、空隙7を保って、
回転子3が回転軸4と一体となって配設されており、上
記軸受継鉄1と回転子3間の磁気吸引力により軸受作用
が行われる。(Prior Art) As shown in FIG. 3, in a conventional radial magnetic bearing, an excitation winding 2 is connected to a bearing yoke 1 installed inside a bearing box 10.
wrapped around the bearing yoke 1, keeping a gap 7 inside the bearing yoke 1,
A rotor 3 is disposed integrally with a rotating shaft 4, and a bearing action is performed by the magnetic attraction between the bearing yoke 1 and the rotor 3.
上記軸受継鉄lの側方には、回転子3と継鉄lとの間の
相対変位を測定する半径方向変位検出器5が軸受箱10
に取付けられており、また他側(図で右側)には、回転
軸4と空隙8を保って、磁気軸受の作動不良時に回転軸
を支承するための異常時用軸受6が同じく軸受箱10に
取付けられている。上記空隙8は、@記磁気軸受部の空
隙7より小さく設定され、磁気軸受が作動不良の場合に
は、回転軸4を該異常時用軸受6が支承し、軸受継鉄1
と回転子3が接触して磁気軸受が損傷するのを防いでい
る。A radial displacement detector 5 for measuring the relative displacement between the rotor 3 and the yoke 1 is installed on the side of the bearing yoke 1 in the bearing box 10.
On the other side (on the right side in the figure), there is also an abnormality bearing 6, which maintains a gap 8 with the rotating shaft 4 and supports the rotating shaft when the magnetic bearing malfunctions, in the bearing box 10. installed on. The air gap 8 is set smaller than the air gap 7 of the magnetic bearing section, and when the magnetic bearing malfunctions, the abnormality bearing 6 supports the rotating shaft 4, and the bearing yoke 1
This prevents damage to the magnetic bearing due to contact between the rotor 3 and the rotor 3.
また上記半径方向変位検出器5は、変位検出回路、位相
j+li償回路、電流増幅回路、励磁電流検出回路等か
ら構成された図示しない制御回路に接続されて16す、
該変位検出器5の出力信号を上記制御回路に導入し、制
御電流を励磁巻線2に供給して軸受継鉄lと回転子3間
に磁気吸引力を発生させて円滑な軸受作用を行わせてい
る。The radial displacement detector 5 is connected to a control circuit (not shown) comprising a displacement detection circuit, a phase j+li compensation circuit, a current amplification circuit, an excitation current detection circuit, etc.
The output signal of the displacement detector 5 is introduced into the control circuit, and a control current is supplied to the excitation winding 2 to generate a magnetic attraction force between the bearing yoke l and the rotor 3, thereby achieving smooth bearing action. I'm letting it go.
(発明がNf決しようとする問題点)
上記した従来の磁気軸受では、異常時用軸受6が、1個
の一体に形成された転がり軸受で構成されているため回
転軸4の外径が太くなると、それにつれて該異常時用軸
受60寸法も大きくなる。(Problems that the invention attempts to solve) In the conventional magnetic bearing described above, the abnormality bearing 6 is composed of one integrally formed rolling bearing, so the outer diameter of the rotating shaft 4 is large. Accordingly, the dimensions of the abnormality bearing 60 also increase accordingly.
しかもこの軸受は比較的高dmN値、即ち高速且つ直径
が大きい条件で使用され、しかも潤滑方法に制限がある
場合が多く、高価或いは製作不可能なことがあった。Moreover, these bearings are used under conditions of relatively high dmN values, ie, high speeds and large diameters, and there are often restrictions on lubrication methods, making them expensive or impossible to manufacture.
また、回転+1114が太くなると、軸受継鉄1は二つ
割)で製作されるので、異常時用軸受6が一体形である
ことは組立、分解上、非常に不便であるという問題点が
あった。In addition, when the rotation +1114 becomes thicker, the bearing yoke 1 is manufactured in half), so having the bearing 6 for use in case of an abnormality in one piece has the problem of being very inconvenient for assembly and disassembly. Ta.
本発明は、異常時用軸受として小口径の転がり軸受を用
い、該軸受の調達と組立、分解を容易にすることを技術
的課題としている。The technical problem of the present invention is to use a small-diameter rolling bearing as a bearing for emergency situations, and to facilitate the procurement, assembly, and disassembly of the bearing.
(問題点を解決するための手段)
本発明は上記した従来技術の問題点と技術的課題を解決
するために、ラジアル磁気軸受に8いて、磁気軸受作動
不良による磁気軸受と回転軸の損傷を防止するための、
外径の小さな異常時用ラジアル転がり軸受を、磁気軸受
空隙よりも小さな空隙で円周方向に3個以上配置して取
付体に取付けたことを特徴としている。なお、実施に当
っては。(Means for Solving the Problems) In order to solve the problems and technical problems of the prior art described above, the present invention provides a radial magnetic bearing that prevents damage to the magnetic bearing and rotating shaft due to malfunction of the magnetic bearing. to prevent
It is characterized in that three or more radial rolling bearings for use in abnormal situations with small outer diameters are arranged in the circumferential direction with gaps smaller than the magnetic bearing gaps and are attached to the mounting body. In addition, regarding implementation.
異常時用ラジアル転がり軸受を取付ける取付体は、上下
二つ割りの取付板によって構成するのが望ましい。The mounting body to which the radial rolling bearing for emergency situations is attached is preferably constructed of a mounting plate divided into upper and lower halves.
(作 用)
本発明は上記のように構成されているので、磁気軸受が
正常に作動しているときは半径方向変位検出器5が正常
値を検出し、軸受継鉄と回転子との間には正常な磁気吸
引力が働いてその空隙値は正常値に保たれ、従って異常
時用軸受と回転軸との空隙値も正常に保たれている。(Function) Since the present invention is configured as described above, when the magnetic bearing is operating normally, the radial displacement detector 5 detects a normal value, and the distance between the bearing yoke and the rotor is detected. A normal magnetic attraction force acts on the bearing, and the gap value is kept at a normal value, and therefore, the gap value between the abnormality bearing and the rotating shaft is also kept at a normal value.
また、磁気軸受が作動不良の時には、最初に、回転軸は
異常時用軸受で支承されて回転するので、軸受継鉄と回
転子は接触しない。なお、回転軸から異常時用軸受へか
かる力が異常に大きい場合には、回転軸と、異常時用軸
受の支持体とを直接接触させるようにすること罠より、
その制動力が回転軸に作用し、軸受継鉄と回転軸とが接
触しない。Further, when the magnetic bearing is malfunctioning, the rotating shaft is first supported by the abnormality bearing and rotates, so the bearing yoke and the rotor do not come into contact with each other. In addition, if the force applied from the rotating shaft to the emergency bearing is abnormally large, it is recommended to bring the rotating shaft into direct contact with the support of the emergency bearing.
The braking force acts on the rotating shaft, and the bearing yoke and the rotating shaft do not come into contact with each other.
(実施例) 次に、本発明の実施夕11を図面と共に説明する。(Example) Next, implementation example 11 of the present invention will be described with reference to the drawings.
m+図は、本発明の一実施例を示す磁気軸受の軸中心線
を含む縦断面図、第2図は、i1図の[1−U線の横l
)1面図であって、図中、第3図と同一符号は同一ない
し同類部分を示すものとする。即ち、図において、1は
軸受継鉄、2は励磁巻線、3は回転子、4は回転軸%
5は軸受継鉄1と回転子3間の相対変位を測定する半径
方向変位検出器で、変位検出回路、位相補償回路、電流
増幅回路、圧力磁電流検出回路等からなる図示しない公
知の制御回路に接続されていることは、従来のものと変
りはない。FIG.
) is a front view, in which the same reference numerals as in FIG. 3 indicate the same or similar parts. That is, in the figure, 1 is the bearing yoke, 2 is the excitation winding, 3 is the rotor, and 4 is the rotating shaft%.
5 is a radial displacement detector that measures the relative displacement between the bearing yoke 1 and the rotor 3, and is equipped with a known control circuit (not shown) consisting of a displacement detection circuit, a phase compensation circuit, a current amplification circuit, a pressure magnetic current detection circuit, etc. The fact that it is connected to is no different from the conventional one.
本実施例では、磁気軸受作動不良時の狽vJ’uj土用
の異常用軸受11が、周方向に3個、等間隔に配置され
、弾性棒12を介して取付板13VC¥l付支持されて
いる。該取付板13は、二つ割りにされた2枚の取付板
13a、13bからなシ、それぞれ回転軸4と空隙9を
保持して軸受箱10に取付げられIsす、一方の取付板
13aには、2個の外径の小さい異常時円転がり軸受1
1.11が、また他方の取付板x3bには、1個の同様
の転がり軸受11がそれぞれ回転軸4と空隙8を介して
取付けられ−〔いる。In this embodiment, three abnormality bearings 11 for use in case of magnetic bearing malfunction are arranged at equal intervals in the circumferential direction, and are supported by mounting plates 13VC through elastic rods 12. ing. The mounting plate 13 is made up of two mounting plates 13a and 13b that are divided into two parts, each of which is mounted on the bearing box 10 while holding the rotating shaft 4 and the air gap 9.One mounting plate 13a has a , 2 small outer diameter circular rolling bearings 1
1.11, and one similar rolling bearing 11 is mounted on the other mounting plate x3b via the rotating shaft 4 and the gap 8, respectively.
上記磁気軸受部の空隙7、異常時軸受部J)空隙8、取
付&13と回転軸4との間の空隙9には、空隙7〉空隙
9〉空隙8〉(通常の運転状態での回転軸最大振幅)
の関係を満足するように定められている。The gap 7 in the magnetic bearing section, the gap 8 in the abnormal bearing section J), and the gap 9 between the mounting &13 and the rotating shaft 4 are as follows: maximum amplitude).
次に、作用について説明すると、磁気軸受が正常に作動
している時、つまり回転軸4かも該磁気軸受へかかる力
が正常範囲にある時は、半径方向変位検出器5が正常値
を検出し、軸受継鉄1と回転子3との間には正常な磁気
吸引力が働いてそのまた、磁気軸受が作動不良の時には
、最初に回転軸4は3個の異常時用転がり軸受11に支
承されて回転し、更に回転軸4から該異常時用転が9軸
受11への力が異常に大きい場合には、該軸受11を支
持する弾性棒12が変形して回転軸4と取付板13とが
直接接触し、制動力が回転軸4に作用する。従って、磁
気軸受が作動不良の場合にも、軸受継鉄1と回転子3は
接触しない。Next, to explain the operation, when the magnetic bearing is operating normally, that is, when the force applied to the magnetic bearing by the rotating shaft 4 is within the normal range, the radial displacement detector 5 detects a normal value. When a normal magnetic attraction force is exerted between the bearing yoke 1 and the rotor 3, and the magnetic bearing is malfunctioning, the rotating shaft 4 is first supported by three rolling bearings 11 for emergency use. If the force from the rotating shaft 4 to the bearing 11 is abnormally large, the elastic rod 12 supporting the bearing 11 is deformed and the rotating shaft 4 and the mounting plate 13 are are in direct contact with each other, and a braking force acts on the rotating shaft 4. Therefore, even if the magnetic bearing malfunctions, the bearing yoke 1 and the rotor 3 do not come into contact with each other.
この実施例によれば、異常時用軸受を、小径の転がり軸
受11を3個以上多数用いて構成しているので、使用す
る軸受外径の選択の自由度が増し、安価で、入手容易な
軸受を使用できるようになる。According to this embodiment, since the abnormality bearing is constructed using three or more small diameter rolling bearings 11, the degree of freedom in selecting the outer diameter of the bearing to be used is increased, and the bearing is inexpensive and easily available. Bearings can now be used.
また、異常時用軸受を、二つ割りの取付板13a、13
bK多数配置し取付けて構成しているので、従来のよう
に、回転軸軸端部を貫通して、一体く作られた転がり軸
受を所定の位置に固定する必要がなくなり、従って該磁
気軸受中唯−の交換部品である異常時用軸受の組立、分
解が容易になり、保守費用が低減される。In addition, the bearing for abnormality is attached to the mounting plates 13a and 13, which are divided into two.
Since a large number of bKs are arranged and installed, it is no longer necessary to penetrate the end of the rotating shaft and fix the integrated rolling bearing in a predetermined position. The only replacement part, the bearing for emergency situations, is easier to assemble and disassemble, reducing maintenance costs.
なお、上記した実施例において、異常時用軸受を、3個
の転がり軸受を用いて構成した構造について説明したが
、それ以上用いてもよいことは勿論であり、その場合、
二つ割りの取付板に適宜分散して取付けられる。In the above-mentioned embodiment, the structure in which the abnormality bearing is configured using three rolling bearings has been described, but it goes without saying that more than three rolling bearings may be used, and in that case,
They can be distributed and installed as appropriate on the two-piece mounting plate.
(発明の効果)
以上説明したように、本発明によれば、磁気軸受作動不
良等の異常時用軸受を、3個以上のジノアル転がり軸受
を円周方向に配置して構成したことKより、異常時用軸
受の選定の自由度が増し、安価で入手容易な外径の小さ
な軸受が使用できるようになると同時に、組立、分解が
容易になり、保守費用が節約できるという効果が生じる
。(Effects of the Invention) As explained above, according to the present invention, the bearing for use in abnormal situations such as magnetic bearing malfunction is constructed by arranging three or more Ginoal rolling bearings in the circumferential direction. The degree of freedom in selecting a bearing for use in abnormal situations is increased, and a bearing with a small outer diameter that is inexpensive and easily available can be used. At the same time, assembly and disassembly become easier, and maintenance costs can be reduced.
第1図は本発明の一実施例を示す:)シアル磁気軸受の
縦断面図、第2図は第1図■−■線による要部横断面図
、第3図は従来のラジアル磁気軸受の第1図と同様の縦
断面図である。
1−−一軸受継鉄、 2−m−励磁巻線、 3−m−回
転子、 4−m−回転軸、 5−m−半径方向変位検出
器、 7一−−磁気軸受部空隙、 8−−一異常時
軸受部空隙、 9−−一取付板部空隙、10−−− h
it受箱、 11−一一異常時用転がり軸受、 1
2−m−弾性棒、 13,13a、13b −m−取付
板。
L□
第2図Figure 1 shows an embodiment of the present invention:) A vertical cross-sectional view of a radial magnetic bearing, Figure 2 is a cross-sectional view of the main part taken along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view of a conventional radial magnetic bearing. FIG. 2 is a longitudinal cross-sectional view similar to FIG. 1; 1--Single bearing yoke, 2-m-excitation winding, 3-m-rotor, 4-m-rotating shaft, 5-m-radial displacement detector, 71--magnetic bearing gap, 8 ---1 Bearing gap during abnormality, 9--1 Mounting plate gap, 10--h
IT receiving box, 11-11 Rolling bearing for emergency use, 1
2-m-elastic rod, 13, 13a, 13b-m-mounting plate. L□ Figure 2
Claims (1)
備え、該変位検出器の出力信号を制御回路に導入し、制
御電流を励磁巻線に供給して前記軸受継鉄と回転子間で
軸受作用を行わせるようにしたラジアル磁気軸受におい
て、磁気軸受作動不良による磁気軸受と回転軸の損傷を
防止するための、外径の小さな異常時用ラジアル転がり
軸受を、磁気軸受空隙よりも小さな空隙で円周方向に3
個以上配置して取付体に取付けたことを特徴とする磁気
軸受。 2、前記異常時用のラジアル転がり軸受が上下二つ割り
の取付板に取付けられている特許請求の範囲第1項記載
の磁気軸受。[Claims] 1. A bearing yoke, an excitation winding, and a rotor radial displacement detector are provided, the output signal of the displacement detector is introduced into a control circuit, and a control current is supplied to the excitation winding. In the radial magnetic bearing that performs a bearing action between the bearing yoke and the rotor, a radial rolling bearing with a small outer diameter for use in abnormal situations is used to prevent damage to the magnetic bearing and rotating shaft due to malfunction of the magnetic bearing. 3 in the circumferential direction with a gap smaller than the magnetic bearing gap.
A magnetic bearing characterized in that more than one magnetic bearing is arranged and attached to a mounting body. 2. The magnetic bearing according to claim 1, wherein the radial rolling bearing for use in abnormal situations is attached to a mounting plate divided into upper and lower halves.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3193386A JPS62194025A (en) | 1986-02-18 | 1986-02-18 | Magnetic bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3193386A JPS62194025A (en) | 1986-02-18 | 1986-02-18 | Magnetic bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62194025A true JPS62194025A (en) | 1987-08-26 |
Family
ID=12344768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3193386A Pending JPS62194025A (en) | 1986-02-18 | 1986-02-18 | Magnetic bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62194025A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272217A (en) * | 1988-09-02 | 1990-03-12 | Hitachi Ltd | Electromagnetic bearing unit |
EP1056171A2 (en) * | 1999-05-25 | 2000-11-29 | Ebara Corporation | Discharge-pumped excimer laser device |
CN104279236A (en) * | 2013-05-29 | 2015-01-14 | Skf磁性机械技术公司 | Auxiliary bearing for magnetically suspended rotor system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5865321A (en) * | 1981-10-15 | 1983-04-19 | Seiko Instr & Electronics Ltd | Magnetic bearing |
JPS59194125A (en) * | 1983-04-18 | 1984-11-02 | Natl Aerospace Lab | Discharging damage preventing device for space bearing |
-
1986
- 1986-02-18 JP JP3193386A patent/JPS62194025A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5865321A (en) * | 1981-10-15 | 1983-04-19 | Seiko Instr & Electronics Ltd | Magnetic bearing |
JPS59194125A (en) * | 1983-04-18 | 1984-11-02 | Natl Aerospace Lab | Discharging damage preventing device for space bearing |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272217A (en) * | 1988-09-02 | 1990-03-12 | Hitachi Ltd | Electromagnetic bearing unit |
EP1056171A2 (en) * | 1999-05-25 | 2000-11-29 | Ebara Corporation | Discharge-pumped excimer laser device |
EP1056171A3 (en) * | 1999-05-25 | 2001-10-31 | Ebara Corporation | Discharge-pumped excimer laser device |
US6603787B1 (en) | 1999-05-25 | 2003-08-05 | Ebara Corporation | Discharge-pumped excimer laser device |
CN104279236A (en) * | 2013-05-29 | 2015-01-14 | Skf磁性机械技术公司 | Auxiliary bearing for magnetically suspended rotor system |
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