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JPS6256620A - Rolling bearing - Google Patents

Rolling bearing

Info

Publication number
JPS6256620A
JPS6256620A JP60194944A JP19494485A JPS6256620A JP S6256620 A JPS6256620 A JP S6256620A JP 60194944 A JP60194944 A JP 60194944A JP 19494485 A JP19494485 A JP 19494485A JP S6256620 A JPS6256620 A JP S6256620A
Authority
JP
Japan
Prior art keywords
mainly composed
sintered body
rolling
silicon carbide
rolling bearing
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
Application number
JP60194944A
Other languages
Japanese (ja)
Inventor
Kazuo Kaneko
和夫 金子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP60194944A priority Critical patent/JPS6256620A/en
Publication of JPS6256620A publication Critical patent/JPS6256620A/en
Pending legal-status Critical Current

Links

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/303—Parts of ball or roller bearings of hybrid bearings, e.g. rolling bearings with steel races and ceramic rolling elements
    • 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
    • F16C33/32—Balls
    • 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
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2206/58—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic nitrides
    • F16C2206/60—Silicon nitride (Si3N4)l
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
    • F16C2300/54—Application independent of particular apparatuses related to environment, i.e. operating conditions high-temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PURPOSE:To enhance reliability and durability under use conditions of high temperature and no-lubrication by using a sintered body, the principal component of which is silicon carbide as one of an outer race, an inner race and a rolling element, and forming the other parts by a sintered body, the principal component of which is silicon nitride. CONSTITUTION:A bearing 1 comprises an outer race 2, an inner race 3 and a ball rolling element 4. The outer race 2 and the inner race 3 are manufactured by a sintered body having a small coefficient of friction, little abrasion, little generation of heat and a small coefficient of expansion, the principal component of which is silicon carbide. Thus, during rotation, friction is low, abrasion is little, and generation of heat is little. Accordingly, the bearing can be good enough for severe use conditions of high temperature and no-lubrication to enhance reliability and durability.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は、主として高温、無潤滑というきびしい条件
下で使用されるセラミック製の転が軸受に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a ceramic rolling bearing used mainly under severe conditions of high temperature and no lubrication.

（従来技術） 一般に転がり軸受は、転動体の転がりによって回転する
ものであるが、転がりだけではなくすべりを伴った転が
りであることは周知である。(Prior Art) Generally, a rolling bearing rotates by the rolling of rolling elements, but it is well known that the bearing rotates not only by rolling but also by sliding.

従って、転がり軸受の寿命の延長を計るためには、前記
すべりに伴なう摩耗や発熱を最小限に押さえることも１
つの重大な要件である。Therefore, in order to extend the life of rolling bearings, it is necessary to minimize the wear and heat generated by the above-mentioned slippage.
These are two important requirements.

ところが、従来のセラミック製伝がり軸受のほとんどは
、外輪、内輪および転動体がいずれも同一の材質にて形
成されているため前述のすべり耐摩耗、耐発熱などの点
で十分とはいえない。However, in most conventional ceramic transmission bearings, the outer ring, inner ring, and rolling elements are all made of the same material, so they are not sufficient in terms of sliding wear resistance, heat generation resistance, etc. mentioned above.

（発明が解決しようとする問題点） この発明は、転がり軸受の回転中における軌道輪（外輪
、内輪）と転動体との間に生じるすべりによる摩耗や発
熱による軸受の損傷を防止することともにトルクの小さ
い軸受を得ることにある。(Problems to be Solved by the Invention) This invention prevents damage to the bearing due to wear and heat generation caused by sliding between the raceway ring (outer ring, inner ring) and rolling elements during rotation of the rolling bearing, and also prevents damage to the bearing due to heat generation. The goal is to obtain smaller bearings.

（問題を解決するための手段） この発明は、外輪と内輪との間に転動体を有する転がり
軸受において、前記外輪、内輪および転動体のうちの少
なくとも１つを炭化珪素を主成分とした焼結体とし、他
の残りの部品を窒化珪素を主成分とした焼結体としたも
のである。(Means for solving the problem) The present invention provides a rolling bearing having rolling elements between an outer ring and an inner ring, in which at least one of the outer ring, the inner ring and the rolling elements is made of silicon carbide as a main component. The remaining parts are sintered bodies containing silicon nitride as a main component.

（作　　用） かくして、この発明の軸受け、無潤滑であっても摩擦、
摩耗、発熱などが小さく、また熱による軸受の寸法変化
の小さい軸受となる。(Function) Thus, the bearing of the present invention can reduce friction even without lubrication.
This results in a bearing with less wear, less heat generation, and less dimensional change due to heat.

（実施例） 次にこの発明を図に示す一実施例について説明すると、
１は軸受、２はその外輪、３は内輪、４は正転動体であ
る。(Example) Next, an example of the present invention shown in the drawings will be described.
1 is a bearing, 2 is an outer ring thereof, 3 is an inner ring, and 4 is a normal rolling element.

軌道輪としての外輪２および内輪３は、炭化珪素を主成
分とした焼結体にて形成されており、また転動体は、窒
化珪素を主成分とした焼結体にて形成されている。The outer ring 2 and the inner ring 3 as raceway rings are formed of a sintered body mainly composed of silicon carbide, and the rolling elements are formed of a sintered body mainly composed of silicon nitride.

なお本願発明にあっては、二種材料による上記実施例の
組合わせの他に下記表に示す組合わせ態様がある。In the present invention, in addition to the combinations of the above embodiments using two types of materials, there are other combinations shown in the table below.

（発明の効果） 以上述べた通りこの発明における転がり軸受は、外輪、
内輪および転動体が、上述の如（、摩擦係数、摩耗の小
さい窒化珪素を主成分とした焼結体と、摩擦係数、摩耗
が小さく、しかも、発熱や膨張係数の小さい炭化珪素を
主成分とした焼結体との組合わせから形成されているの
で、回転中の摩擦が小さく、かつ、摩耗が少ないことは
勿論のこと、発熱も小さい６従って、高温、無潤滑とい
うきびしい使用条件下にあっても十分耐えることができ
、信頼性、耐久性の高い軸受となる。(Effect of the invention) As described above, the rolling bearing of this invention has an outer ring,
The inner ring and rolling elements are made of a sintered body mainly composed of silicon nitride, which has a low coefficient of friction and wear, and silicon carbide, which has a low coefficient of friction and wear, and also has a low coefficient of heat generation and expansion, as described above. Since it is formed from a combination of a sintered body and a sintered body, it has low friction and wear during rotation, and also generates little heat6. This makes the bearing highly reliable and durable.

なお本発明の軸受け、無潤滑で使用することを最大の目
的としているが、必要により潤滑剤を用いて使用するこ
ともある。Although the main purpose of the bearing of the present invention is to use it without lubrication, it may be used with a lubricant if necessary.

また実施例では、保持器を用いない例によって説明した
が、使用条件に見合った保持器を用いて実施することも
ある。Further, in the embodiment, an example in which a cage is not used has been described, but a cage suitable for the usage conditions may be used.

【図面の簡単な説明】[Brief explanation of the drawing]

図はこの発明の一実施例を示す要部断面図である。 実施例の符号中、１は転がり軸受、２は外輪、３は内輪
、４は玉である。 特許出願人　　　日本精工株式会社 阻血の浄書（内容に変更なし） 手続補正書（方式） ％式％ １、事件の表示 特願昭６０−１９４９４４号 ２）発明の名称 転がり粕受 ３、補正をする者 事件との関係　　特許出願人 昭和６０午１１月２６日付発送の手続補正指令書（方式
）に基づく手続補正 ５、補正の対象 添（・１図面（全［：’（Ｉ） ６、補正の内容 別紙のとおり 以上。The figure is a sectional view of a main part showing an embodiment of the present invention. In the symbols of the embodiment, 1 is a rolling bearing, 2 is an outer ring, 3 is an inner ring, and 4 is a ball. Patent applicant: NSK Co., Ltd. Issuko's engraving (no change in content) Procedural amendment (method) % formula % 1. Indication of the case Patent Application No. 1984-194944 2) Name of the invention Rolling lees receiver 3. Amendments to be made Relationship with the patent applicant's procedural amendment order (method) sent on November 26, 1985. The contents are as shown in the attached sheet.

Claims (7)

【特許請求の範囲】[Claims] （１）外輪と内輪との間に転動体を有する転がり軸受に
おいて、前記外輪、内輪および転動体のうちの少なくと
も１つが炭化珪素を主成分とした焼結体であり、他の残
りの部品が窒化珪素を主成分とした焼結体であることを
特徴とした転がり軸受。(1) In a rolling bearing having a rolling element between an outer ring and an inner ring, at least one of the outer ring, inner ring and rolling element is a sintered body mainly composed of silicon carbide, and the remaining parts are A rolling bearing characterized by being a sintered body whose main component is silicon nitride. （２）特許請求の範囲第１項において、外輪および内輪
が炭化珪素を主成分とした焼結体であり、転動体が窒化
珪素を主成分とした焼結体だある転がり軸受。(2) A rolling bearing according to claim 1, wherein the outer ring and the inner ring are sintered bodies mainly composed of silicon carbide, and the rolling elements are sintered bodies mainly composed of silicon nitride. （３）特許請求の範囲第１項において、外輪が炭化珪素
を主成分とした焼結体であり、内輪と転動体が窒化珪素
を主成分とした焼結体である転がり軸受。(3) A rolling bearing according to claim 1, wherein the outer ring is a sintered body mainly composed of silicon carbide, and the inner ring and rolling elements are sintered bodies mainly composed of silicon nitride. （４）特許請求の範囲第１項において、内輪が炭化珪素
を主成分とした焼結体であり、外輪および転動体が窒化
珪素を主成分とした焼結体である転がり軸受。(4) A rolling bearing according to claim 1, wherein the inner ring is a sintered body mainly composed of silicon carbide, and the outer ring and rolling elements are sintered bodies mainly composed of silicon nitride. （５）特許請求の範囲第１項において、内輪および転動
体が炭化珪素を主成分とした焼結体であり、外輪が窒化
珪素を主成分とした焼結体である転がり軸受。(5) The rolling bearing according to claim 1, wherein the inner ring and rolling elements are sintered bodies mainly composed of silicon carbide, and the outer ring is a sintered body mainly composed of silicon nitride. （６）特許請求の範囲第１項において、転動体が炭化珪
素を主成分とした焼結体であり、外輪および内輪が窒化
珪素を主成分とした焼結体である転がり軸受。(6) A rolling bearing according to claim 1, wherein the rolling elements are sintered bodies mainly composed of silicon carbide, and the outer ring and the inner ring are sintered bodies mainly composed of silicon nitride. （７）特許請求の範囲第１項において、外輪および転動
体が炭化珪素を主体とした焼結体であり、内輪が窒化珪
素を主体とした焼結体である転がり軸受。(7) The rolling bearing according to claim 1, wherein the outer ring and the rolling elements are sintered bodies mainly composed of silicon carbide, and the inner ring is a sintered body mainly composed of silicon nitride.
JP60194944A 1985-09-05 1985-09-05 Rolling bearing Pending JPS6256620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60194944A JPS6256620A (en) 1985-09-05 1985-09-05 Rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60194944A JPS6256620A (en) 1985-09-05 1985-09-05 Rolling bearing

Publications (1)

Publication Number Publication Date
JPS6256620A true JPS6256620A (en) 1987-03-12

Family

ID=16332925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60194944A Pending JPS6256620A (en) 1985-09-05 1985-09-05 Rolling bearing

Country Status (1)

Country Link
JP (1) JPS6256620A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63229043A (en) * 1987-03-17 1988-09-22 光洋精工株式会社 Bearing apparatus of dental handpiece
JPS63254223A (en) * 1987-04-10 1988-10-20 Mitsubishi Heavy Ind Ltd Rolling bearing
JPS6458813A (en) * 1987-08-28 1989-03-06 Koyo Seiko Co Tapered roller bearing
JPS6458814A (en) * 1987-08-28 1989-03-06 Koyo Seiko Co Cylindrical roller bearing
JPH01159419A (en) * 1987-12-15 1989-06-22 Koyo Seiko Co Ltd Full type ball bearing for turbocharger
JPH0235219A (en) * 1988-07-22 1990-02-05 Okuma Mach Works Ltd Bearing having bearing pressure increase preventing function
JPH02113120A (en) * 1988-10-21 1990-04-25 Isuzu Motors Ltd Bearing structure for rotary machine
JPH02283916A (en) * 1989-04-22 1990-11-21 Koyo Seiko Co Ltd Alternator for automobile
JPH05272541A (en) * 1992-03-27 1993-10-19 Koyo Seiko Co Ltd Ceramic bearing
WO2022136210A1 (en) * 2020-12-21 2022-06-30 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Rolling bearings for use in temperature-fluctuating environments, and use thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018620A (en) * 1984-04-27 1985-01-30 Toray Ind Inc Ball for bearing use

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018620A (en) * 1984-04-27 1985-01-30 Toray Ind Inc Ball for bearing use

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63229043A (en) * 1987-03-17 1988-09-22 光洋精工株式会社 Bearing apparatus of dental handpiece
JPS63254223A (en) * 1987-04-10 1988-10-20 Mitsubishi Heavy Ind Ltd Rolling bearing
JPS6458813A (en) * 1987-08-28 1989-03-06 Koyo Seiko Co Tapered roller bearing
JPS6458814A (en) * 1987-08-28 1989-03-06 Koyo Seiko Co Cylindrical roller bearing
JPH01159419A (en) * 1987-12-15 1989-06-22 Koyo Seiko Co Ltd Full type ball bearing for turbocharger
JPH0235219A (en) * 1988-07-22 1990-02-05 Okuma Mach Works Ltd Bearing having bearing pressure increase preventing function
JPH02113120A (en) * 1988-10-21 1990-04-25 Isuzu Motors Ltd Bearing structure for rotary machine
JPH02283916A (en) * 1989-04-22 1990-11-21 Koyo Seiko Co Ltd Alternator for automobile
JPH05272541A (en) * 1992-03-27 1993-10-19 Koyo Seiko Co Ltd Ceramic bearing
WO2022136210A1 (en) * 2020-12-21 2022-06-30 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Rolling bearings for use in temperature-fluctuating environments, and use thereof

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