JP2949526B2 - Rolling bearing - Google Patents
Rolling bearingInfo
- Publication number
- JP2949526B2 JP2949526B2 JP3023133A JP2313391A JP2949526B2 JP 2949526 B2 JP2949526 B2 JP 2949526B2 JP 3023133 A JP3023133 A JP 3023133A JP 2313391 A JP2313391 A JP 2313391A JP 2949526 B2 JP2949526 B2 JP 2949526B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- bearing
- rolling bearing
- race
- rolling element
- 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.)
- Expired - Fee Related
Links
Landscapes
- Rolling Contact Bearings (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえば水中で用い
るのに適した転がり軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing suitable for use in, for example, underwater.
【０００２】[0002]
【従来の技術と発明の課題】たとえば、軌道輪および転
動体が窒化ケイ素で形成されたセラミック軸受は、鋼製
軸受に比較して優れた耐食性を有しているので、水中で
の使用が考えられている。2. Description of the Related Art For example, a ceramic bearing in which a bearing ring and a rolling element are formed of silicon nitride has excellent corrosion resistance as compared with a steel bearing, and is considered to be used in water. Have been.
【０００３】しかしながら、窒化ケイ素は、自己潤滑性
を持たないために、このような軸受を水中において特に
高温、高荷重状態で使用すると、摩耗を生じ、破損する
ことがある。[0003] However, since silicon nitride does not have self-lubricating properties, when such a bearing is used in water under a high temperature and a high load state, it may be worn and may be damaged.
【０００４】この発明の目的は、上記問題を解決した転
がり軸受を提供することにある。An object of the present invention is to provide a rolling bearing which solves the above-mentioned problem.
【０００５】[0005]
【課題を解決するための手段】この発明による転がり軸
受は、軌道輪および転動体がそれぞれセラミックスで形
成され、軌道輪の軌道面および転動体の転動面がそれぞ
れ酸化ケイ素皮膜で覆われているものである。In the rolling bearing according to the present invention, the race and the rolling element are each formed of ceramics, and the raceway surface of the race and the rolling surface of the rolling element are respectively covered with a silicon oxide film. Things.
【０００６】上記において、酸化ケイ素皮膜の厚さは、
５〜１０μｍ程度としておくのがよい。また、酸化ケイ
素皮膜は、軌道輪および転動体の表面全体のうち少なく
とも軌道輪の軌道面および転動体の転動面だけに形成し
ておけばよい。In the above, the thickness of the silicon oxide film is
It is preferable to set the thickness to about 5 to 10 μm. The silicon oxide film may be formed only on at least the raceway surface of the bearing ring and the rolling surface of the rolling element of the entire surface of the raceway and the rolling element.
【０００７】上記において、軌道輪および転動体は窒化
ケイ素を主体とするセラミックスで形成されているのが
よい。In the above, the race and the rolling elements are preferably made of ceramics mainly composed of silicon nitride.
【０００８】この場合、酸化ケイ素皮膜は、軌道輪およ
び転動体を大気中において高温で所定時間、たとえば９
００℃程度で１時間保持することにより形成される。In this case, the silicon oxide film is applied to the bearing ring and the rolling element at a high temperature in the atmosphere for a predetermined time, for example, 9 hours.
It is formed by holding at about 00 ° C. for one hour.
【０００９】この発明の転がり軸受は、水中で使用する
のに適しているが、これに限られるものではない。The rolling bearing of the present invention is suitable for use in water, but is not limited to this.
【００１０】[0010]
【実施例】以下、この発明の実施例を示す。Embodiments of the present invention will be described below.
【００１１】窒化ケイ素製内外両輪および玉からなる転
がり軸受を複数個用意し、その内外両輪の軌道面および
玉の表面に、厚さ１０μｍのＳｉＯ2 皮膜を形成した。
そして、荷重１４７０Ｎで寿命試験を行った。その結
果、上記軸受のＢ10寿命は５１０時間であった。A plurality of rolling bearings comprising inner and outer wheels and balls made of silicon nitride were prepared, and a 10 μm thick SiO 2 film was formed on the raceway surfaces of the inner and outer wheels and the surfaces of the balls.
Then, a life test was performed under a load of 1470N. As a result, B 10 life of the bearing was 510 hours.
【００１２】比較のために、上記と同一の条件で、内外
両輪の軌道面および玉の表面にＳｉＯ2 皮膜を持たない
窒化ケイ素製内外両輪および玉からなる転がり軸受のＢ
10寿命を調べたところ、３９１．１時間であった。For comparison, under the same conditions as described above, the rolling bearing B of a silicon nitride inner and outer wheel and a ball having no SiO 2 coating on the raceway surfaces of the inner and outer wheels and the ball surface does not have a SiO 2 film.
When the 10 life was examined, it was 391.1 hours.
【００１３】[0013]
【発明の効果】この発明の転がり軸受によれば、酸化ケ
イ素が、高温、高荷重状態での優れた自己潤滑性および
耐食性を有しているので、たとえば水中において高温、
高荷重状態で使用した場合にも、摩耗が生じることはな
い。したがって、軌道輪の破損が防止されて寿命がのび
る。According to the rolling bearing of the present invention, silicon oxide has excellent self-lubricating properties and corrosion resistance under high temperature and high load conditions.
No wear occurs when used under high load conditions. Therefore, damage to the bearing ring is prevented and the life is extended.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16C 33/32 F16C 33/34 F16C 33/62 ──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F16C 33/32 F16C 33/34 F16C 33/62
Claims (2)
クスで形成され、軌道輪の軌道面および転動体の転動面
がそれぞれ酸化ケイ素皮膜で覆われている転がり軸受。A rolling bearing in which a race and a rolling element are each formed of ceramics, and a raceway surface of the race and a rolling surface of the rolling element are respectively covered with a silicon oxide film.
とするセラミックスで形成されている請求項１記載の転
がり軸受。2. The rolling bearing according to claim 1, wherein the bearing ring and the rolling elements are formed of ceramics mainly composed of silicon nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3023133A JP2949526B2 (en) | 1991-02-18 | 1991-02-18 | Rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3023133A JP2949526B2 (en) | 1991-02-18 | 1991-02-18 | Rolling bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04262121A JPH04262121A (en) | 1992-09-17 |
| JP2949526B2 true JP2949526B2 (en) | 1999-09-13 |
Family
ID=12102037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3023133A Expired - Fee Related JP2949526B2 (en) | 1991-02-18 | 1991-02-18 | Rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949526B2 (en) |
-
1991
- 1991-02-18 JP JP3023133A patent/JP2949526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04262121A (en) | 1992-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990518 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070709 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080709 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |