JPH0244119U - - Google Patents
Info
- Publication number
- JPH0244119U JPH0244119U JP12220488U JP12220488U JPH0244119U JP H0244119 U JPH0244119 U JP H0244119U JP 12220488 U JP12220488 U JP 12220488U JP 12220488 U JP12220488 U JP 12220488U JP H0244119 U JPH0244119 U JP H0244119U
- Authority
- JP
- Japan
- Prior art keywords
- force source
- inner ring
- magnetic force
- sealed bearing
- magnetic fluid
- 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
- 239000011553 magnetic fluid Substances 0.000 claims description 7
- 239000004519 grease Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
Description
第１図〜第５図はこの考案の一実施例を示し、
第１図〜第３図は要部断面図、第４図は磁力源の
一部切欠斜視図、第５図は内輪外周に環状溝を設
けた要部断面図、第６図は従来例を示す要部断面
図である。
符号の説明、１……密封軸受、２……内輪、２
′……内輪の外周、３……外輪、３′……外輪の
内周、４……転動体、６……シールド、７……段
部、８……磁性流体シール、９……磁力源、１０
……ヨーク、１２……放射状の溝、１３……環状
溝、ｂ……微少間隙、Ｆ……磁性流体、Ｇ……グ
リース。
Figures 1 to 5 show an embodiment of this invention,
Figures 1 to 3 are sectional views of the main parts, Figure 4 is a partially cutaway perspective view of the magnetic force source, Figure 5 is a sectional view of the main parts with an annular groove provided on the outer periphery of the inner ring, and Figure 6 is a conventional example. FIG. Explanation of symbols, 1... Sealed bearing, 2... Inner ring, 2
'... Outer circumference of inner ring, 3... Outer ring, 3'... Inner circumference of outer ring, 4... Rolling element, 6... Shield, 7... Step, 8... Magnetic fluid seal, 9... Magnetic force source , 10
... Yoke, 12 ... Radial groove, 13 ... Annular groove, b ... Minute gap, F ... Magnetic fluid, G ... Grease.
Claims (1)
回転可能に組付けた軸受において、前記内輪と外
輪間の大気側には内輪の外周に形成した段部と微
少間隙を介して対向する磁性流体シールを設け、
他方側にはグリースをシールするシールドを設け
たことを特徴とする密封軸受。 (2) 前記磁性流体シールが、軸受の軸方向に沿
つて着磁した環状の磁力源と、該磁力源の内周と
内輪の外周との間に磁気吸着した磁性流体とから
なるものである請求項１に記載の密封軸受。 (3) 前記磁性流体シールが、軸受の軸方向に沿
つて着磁した環状の磁力源と、該磁力源の大気側
の側面に設けたヨークと、該ヨークの内周と内輪
の外周との間に磁気吸着した磁性流体とからなる
ものである請求項１に記載の密封軸受。 (4) 前記磁力源が、前記段部との対向面に放射
状の溝を備えたものである請求項２、または請求
項３のいずれかに記載の密封軸受。 (5) 前記磁力源の内周と対向する内輪の外周に
、環状溝を設けたものである請求項２〜請求項４
のうち、いずれかに記載の密封軸受。[Claims for Utility Model Registration] (1) In a bearing in which an inner ring and an outer ring are assembled so as to be able to rotate relative to each other via rolling elements, there is a step formed on the outer periphery of the inner ring on the atmosphere side between the inner ring and the outer ring. A magnetic fluid seal is provided that faces the
A sealed bearing characterized by having a shield on the other side to seal out grease. (2) The magnetic fluid seal is composed of an annular magnetic force source magnetized along the axial direction of the bearing, and a magnetic fluid magnetically attracted between the inner circumference of the magnetic force source and the outer circumference of the inner ring. A sealed bearing according to claim 1. (3) The magnetic fluid seal includes an annular magnetic force source magnetized along the axial direction of the bearing, a yoke provided on the side surface of the magnetic force source on the atmosphere side, and an inner circumference of the yoke and an outer circumference of the inner ring. The sealed bearing according to claim 1, comprising a magnetic fluid magnetically attracted therebetween. (4) The sealed bearing according to claim 2 or 3, wherein the magnetic force source is provided with radial grooves on a surface facing the stepped portion. (5) An annular groove is provided on the outer periphery of the inner ring facing the inner periphery of the magnetic force source.
A sealed bearing as described in any of the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12220488U JPH0244119U (en) | 1988-09-20 | 1988-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12220488U JPH0244119U (en) | 1988-09-20 | 1988-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244119U true JPH0244119U (en) | 1990-03-27 |
Family
ID=31369914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12220488U Pending JPH0244119U (en) | 1988-09-20 | 1988-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244119U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113025B2 (en) * | 1976-05-28 | 1986-04-11 | Silver Seiko | |
| JPS6249509A (en) * | 1985-08-29 | 1987-03-04 | Mitsubishi Electric Corp | Numerical controller |
| JPS62266227A (en) * | 1986-05-14 | 1987-11-19 | Koyo Seiko Co Ltd | Enclosed type roller bearing |
-
1988
- 1988-09-20 JP JP12220488U patent/JPH0244119U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113025B2 (en) * | 1976-05-28 | 1986-04-11 | Silver Seiko | |
| JPS6249509A (en) * | 1985-08-29 | 1987-03-04 | Mitsubishi Electric Corp | Numerical controller |
| JPS62266227A (en) * | 1986-05-14 | 1987-11-19 | Koyo Seiko Co Ltd | Enclosed type roller bearing |