JPH0388024U - - Google Patents
Info
- Publication number
- JPH0388024U JPH0388024U JP14866889U JP14866889U JPH0388024U JP H0388024 U JPH0388024 U JP H0388024U JP 14866889 U JP14866889 U JP 14866889U JP 14866889 U JP14866889 U JP 14866889U JP H0388024 U JPH0388024 U JP H0388024U
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- blades
- bearing device
- touchdown
- solid lubricant
- 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
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229910000341 lead(IV) sulfide Inorganic materials 0.000 claims 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
Description
第１図はタツチダウン軸受が組み込まれたター
ボ分子ポンプの縦断面図、第２図は本考案のタツ
チダウン軸受の断面図、第３図は従来の軸受の断
面図である。
符号の説明、２……ケーシング、２′……内側
ケーシング、３……軸、４……ロータ、５，６…
…タツチダウン軸受、７，８……電磁石、９，１
０……グレード、１２，１２ａ……内輪、１３，
１３ａ……外輪、１４，１４ａ……玉、１５……
固体潤滑剤被膜。
FIG. 1 is a longitudinal cross-sectional view of a turbomolecular pump incorporating a touchdown bearing, FIG. 2 is a cross-sectional view of the touchdown bearing of the present invention, and FIG. 3 is a cross-sectional view of a conventional bearing. Explanation of symbols, 2...Casing, 2'...Inner casing, 3...Shaft, 4...Rotor, 5, 6...
...Touch-down bearing, 7, 8...Electromagnet, 9,1
0...Grade, 12, 12a...Inner ring, 13,
13a... Outer ring, 14, 14a... Ball, 15...
Solid lubricant film.
Claims (1)
前ブレード間に位置する様に配設された複数枚の
ブレードを有する固定側部材と、前記回転側部材
を回動自在に支持した磁気軸受と、該磁気軸受が
停電などによつて磁気軸受としての浮上機能が失
われた際に、前記両部材に配設されたブレードが
互に接触することを防止するタツチダウン軸受と
を備えた軸受装置において、前記タツチダウン軸
受は、少なくとも外輪内輪玉の全面が固体潤滑剤
にて被覆されており、かつ内輪及び外輪の両方又
はいずれか一方のみぞ半径を玉径の５６％をこえ
６５％未満の範囲に設定された軸受装置。 (2) タツチダウン軸受に被膜された固体潤滑剤
が鉛及び二硫化モリブデンである請求項(1)に記
載の軸受装置。 (3) タツチダウン軸受の内輪、外輪及び転動体
がマルテンサイト系ステンレス鋼から成る請求項
(1)，(2)に記載の軸受装置。[Claims for Utility Model Registration] (1) A rotating member having a plurality of blades;
A fixed side member having a plurality of blades arranged to be located between the front blades, a magnetic bearing rotatably supporting the rotating side member, and the magnetic bearing can be used as a magnetic bearing due to a power outage or the like. In a bearing device comprising a touchdown bearing that prevents the blades disposed on both members from coming into contact with each other when the floating function of A bearing device that is coated with a solid lubricant and has a groove radius of both or one of the inner ring and outer ring set within a range of more than 56% and less than 65% of the ball diameter. (2) The bearing device according to claim (1), wherein the solid lubricant coated on the touchdown bearing is lead and molybdenum disulfide. (3) A claim in which the inner ring, outer ring, and rolling elements of the touchdown bearing are made of martensitic stainless steel.
Bearing device described in (1) and (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14866889U JPH0388024U (en) | 1989-12-26 | 1989-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14866889U JPH0388024U (en) | 1989-12-26 | 1989-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0388024U true JPH0388024U (en) | 1991-09-09 |
Family
ID=31695111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14866889U Pending JPH0388024U (en) | 1989-12-26 | 1989-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0388024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059651A1 (en) * | 2004-12-01 | 2006-06-08 | Jtekt Corporation | Touchdown bearing |
| JP2006183867A (en) * | 2004-12-01 | 2006-07-13 | Jtekt Corp | Touchdown bearing |
-
1989
- 1989-12-26 JP JP14866889U patent/JPH0388024U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059651A1 (en) * | 2004-12-01 | 2006-06-08 | Jtekt Corporation | Touchdown bearing |
| JP2006183867A (en) * | 2004-12-01 | 2006-07-13 | Jtekt Corp | Touchdown bearing |
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