GB1601573A - Protective cover for bearing assemblies - Google Patents
Protective cover for bearing assemblies Download PDFInfo
- Publication number
- GB1601573A GB1601573A GB19161/77A GB1916177A GB1601573A GB 1601573 A GB1601573 A GB 1601573A GB 19161/77 A GB19161/77 A GB 19161/77A GB 1916177 A GB1916177 A GB 1916177A GB 1601573 A GB1601573 A GB 1601573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bearing ring
- cover
- shaft
- inner bearing
- seal
- 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
Links
- 230000001681 protective effect Effects 0.000 title claims description 6
- 230000000712 assembly Effects 0.000 title description 3
- 238000000429 assembly Methods 0.000 title description 3
- 238000007789 sealing Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/54—Other sealings for rotating shafts
-
- 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
-
- 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
- F16C33/80—Labyrinth sealings
- F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
(54) PROTECTIVE COVER FOR BEARING ASSEMBLIES
(71) We, SKF (U.K.) LIMITED, a British company, of Sundon Park Road,
Luton, Bedfordshire, England, (formerly of
Leagrave Road, Luton, Bedfordshire,
England), do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement:- This invention relates to bearing assemblies of the kind comprising outer and inner bearing rings rotatably mounted relative to one another by rolling elements disposed between the two rings, the inner bearing ring having a bore for reception of a shaft to be supported by or supporting the bearing assembly.
The object of the invention is to provide a bearing assembly of this kind which is particularly suitable for use in exposed locations, such as for example in agricultural machinery, where the bearing assembly may be adversely affected by contact with foreign matter.
Bearing assemblies mounted in exposed locations in agricultural machinery are frequently subjected to impact with stones, pressure from grass wrap, and contact with mud, water and crop juice. The life of the bearing assembly can be reduced if the above mentioned foreign matter damages the bearing seals and subsequently enters the bearing. Also difficulties may result if the stones cause mechanical damage to the shaft adjacent the bearing or if water or crop juice causes corrosion of the part of the shaft immediately adjacent the inner bearing ring. It is not possible to clean this part of the shaft due to the chamfer on the end of the bore in the inner bearing ring, as will be described hereinafter with reference to Fig. 2 of the accompanying drawing, and any damage or corrosion on this part of the shaft may prevent the inner bearing ring and/or the bearing assembly from being removed, so that the shaft would then have to be severed, preventing subsequent re-use of the shaft. Any corrosion of the bore of the inner bearing ring or of the shaft seating within the bore due to liquid seeping into this area may also prevent the inner bearing ring from being removed from the shaft.
Usually the inner bearing ring is mounted on the shaft as a free fit and mechanically locked in position by grub screws, the free space between the bore of the bearing and the shaft in which liquid can seep depending on the initial relative fit between the bore of the bearing and the shaft seating and the torque applied to the locking of the grub screws.
According to the present invention there is provided a bearing assembly comprising outer and inner bearing rings rotatably mounted relative to one another by rolling elements disposed between the two rings, the inner bearing ring having a bore for reception of a shaft to be supported by or supporting the bearing assembly, and bearing seals between the outer and inner bearing rings, wherein at least one end of the inner bearing ring is provided with a shaft seal mounted on the inner bearing ring and adapted to co-operate with a shaft mounted as a close fit within the bore of the inner bearing ring to prevent penetration of liquid between the shaft and the inner bearing ring from said one end thereof.
In the bearing assembly of the invention, the shaft seal prevents corrosion and subsequent seizure of the inner bearing ring on the shaft due to seepage of liquid into the free space between the shaft and the bearing ring from said one end thereof. It also protects the part of the shaft immediately adjacent the inner bearing ring from corrosion, from paint or other protective medium which may be applied to the shaft by the machine manufacturer, and from mechanical damage due to impact with stones.
The shaft seal is preferably incorporated in, or consists of, a protective cover mounted on the inner bearing ring and arranged to act as a flinger to deflect stones, water, mud, crop juice, etc. from direct impingement on the bearing seals between the outer and inner bearing ring. Such a cover would also protect the bearing seals from the application of paint, and in addition protect the locking grub screws on the inner bearing ring from damage and/or corrosion. Any damage or corrosion of the grub screws would of course also cause difficulties in dismounting a bearing from a shaft.
In a bearing assembly of the kind described the inner bearing ring generally has a greater axial length than the outer bearing ring, and a cover incorporating the shaft seal can conveniently include a fustoconical skirt flared radially outwards in the direction towards the outer bearing ring, the free end of the skirt being spaced close to the outer bearing ring to form a labyrinth seal which, together with grease within the cover, assists in preventing ingress of liquid or dirt into the bearing assembly.
The cover may be manufactured in plastics or pressed steel, and in a case in which the shaft sealing element is a separate component mounted on the cover, the sealing element may be mounted in a recess in the cover or bonded thereto.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawing, in which:
Fig. 1 is an axial view of a bearing assembly mounted in a housing and fitted with a shaft seal engaged with a shaft supported by the bearing assembly, the shaft seal and housing being shown in section,
Fig. 2 is a detail view on a larger scale of the junction between the inner bearing ring and the shaft,
Fig. 3 is an axial view of part of the bearing assembly of Fig. 1 fitted with another construction of shaft seal,
Fig. 4 is an axial view of part of the bearing assembly of Fig. 1 fitted with a further construction of shaft seal, and
Fig. 5 is an axial view of part of the bearing assembly of Fig. 1 fitted with yet another construction of shaft seal.
The bearing assembly shown in Fig.
comprises an inner bearing ring 10 rotatably
mounted in an outer bearing ring 11 by a
plurality of rolling elements such as balls or
rollers (not shown) disposed between the
two bearing rings and in rolling engagement
with raceways on the rings. The outer ring
11 is mounted in a housing 12 secured to a
fixed support 13, and a shaft 14 is mounted
as a free fit in the bore of the inner bearing
ring 10. The bearing assembly is of the self
aligning type and for this purpose the outer
periphery of the outer bearing ring 11 is
part-spherical and mates with a
corresponding part-spherical surface on the
inside of the housing. The inner bearing ring
10 projects axially beyond the ends of the outer bearing ring and is fitted with grub screws 15 which firmly secure the inner bearing ring onto the shaft for rotation therewith.
A shaft seal comprising a cover 20 of plastics material and a rubber "0" ring 21 in the cover is fitted on the end of the inner bearing ring 10 remote from the support 13.
The cover 20 comprises a thick ring 22 having a skirt 23 extending in the direction of the outer bearing ring 11, the external wall of the ring 22 and skirt 23 being frustoconical in shape. The inboard end of the ring 22 has a recess defining a cylindrical surface 24 which is a close fit on the outer surface of the inner bearing ring 10 and an end wall 25 which abuts against the end face of the inner bearing ring 10, the remainder of the ring surrounding the shaft. The "O" ring is mounted in a recess 26 in the inner wall of the ring 22 and is in sealing engagement with the shaft. The free end of the skirt terminates close to the outer bearing ring 11 and is spaced a small distance radially inwards from the partspherical surface on the housing 12 to prevent the cover interfering with selfaligning movement of the bearing assembly.
As shown in Fig. 2, the bore of the inner bearing ring 10 is provided with a chamfer 27 which prevents free access for cleaning to the part of the shaft immediately adjacent the inner bearing ring, as explained previously, and any corrosion on this part of the shaft could prevent removal of the inner bearing ring from the shaft, except by the use of excessive force which could damage the bearing and/or the shaft.
In use, the engagement of the cylindrical surface 24 on the cover against the outer surface of the inner bearing ring 10 and the engagement of the "0" ring 21 against the shaft and against the walls of its recess in the cover provides liquid tight sealing between the inner bearing ring 10 and the shaft. The cover itself acts as a flinger in which the frusto-conical outside wall resists the pressure of grass wrap and tends to throw stones and dirt away from the seals between the two bearing rings 10, 11. In addition, the small clearance gap between the free end of the skirt 23, the housing 12 and the outer bearing ring 11 forms in effect a labyrinth seal which, together with grease inside the cover, assists in preventing ingress of dirt or liquid into the bearing.
The shaft seal shown in Fig. 3 comprises a pressed steel cover 30 having a cylindrical section 31 formed with a radially inturned flange 32 at one end thereof and a radially out-turned flange 33 at the opposite end thereof, and a frusto-conical section 34 the smaller diameter end of which is integral with the outer periphery of flange 33. The cylindrical section 31 is mounted on the inner bearing ring 10 with the frusto-conical section 34 extending in the direction towards the outer bearing ring 11 and the flange 32 spaced from the end face of the inner bearing ring 10. A rubber annular seal 35 of triangular section has one face thereof bonded to the axially inner wall of flange 32, the seal 35 projecting downwards below the flange and its inner periphery being formed with a lip 36 which is in sealing engagement with the shaft. The apex of the seal 35 opposite flange 32 forms a lip 37 which is in sealing engagement with the end face of the inner bearing ring 10. The rubber ring 35 thus provides a seal between the inner bearing ring and the shaft. The frustoconical section 34 forms a flinger which protects the seal between the bearing rings, and the free end of the frusto-conical section 34 co-operates with the outer bearing ring and housing to form a labyrinth seal. The rubber annular seal 35 need not necessarily be of triangular section, but can be of any other suitable section if desired, for example D-shaped.
The shaft seal shown in Fig. 4 comprises a pressed steel cover 40 having a cylindrical section 41 formed with flanges 42, 43 at opposite ends thereof and a frusto-conical section 44 similar to the corresponding sections and flanges 31-34 of the cover of
Fig. 3. The sealing element however comprises an annular rubber disc 45 bonded to the flange 42 and making sealing engagement with the end face of the inner bearing ring 10. The disc 45 in an unstressed condition has an internal diameter less than that of the shaft so that, in use, the inner periphery of the disc forms a lip 46 which is flexed outwards and makes sealing engagement with the shaft.
The annular rubber disc 45 need not necessarily be bonded to the flange 42 but can be a free disc clamped between the flange 42 and the end face of the inner bearing ring 10. This construction has the advantage that the disc 45 may be interchanged for one of a different internal diameter for use with a bearing assembly on a shaft of corresponding diameter, provided that the external diameter of the inner bearing ring remained the same.
The shaft seal shown in Fig. 5 comprises a cover 50 similar to that of the cover 20 of
Fig. 1 except that the inner periphery 51 of the cover is formed with a serrated surface which makes sealing engagement with the shaft. The cover 50 can conveniently be moulded in resilient plastics material. As in the arrangement of Fig. 1, the cover makes sealing engagement with the inner bearing ring 10, and the free end of the frustoconical skirt cooperates with the outer bearing ring 11 and the housing 12 to form a labyrinth seal.
In each of the embodiments shown in the drawings, the cover is simple to mount and dismount as no mechanical locking means is employed, in the form of grub screws etc. It is easy to locate in its operating position as the cover is registered on to the outside diameter and end face of the inner bearing ring to give radial and axial positioning respectively.
When mounting the cover in position on the inner bearing ring, the space enclosed between the inner ring and the inside surface of the cover is preferably filled with a grease pack to give added protection to the bearing seal.
WHAT WE CLAIM IS:
1. A bearing assembly comprising outer and inner bearing rings rotatably mounted relative to one another by rolling elements disposed between the two rings, the inner bearing ring having a bore for reception of a shaft to be supported by or supporting the bearing assembly, and bearing seals between the outer and inner bearing rings, wherein at least one end of the inner bearing ring is provided with a shaft seal mounted on the inner bearing ring and adapted to co-operate with a shaft mounted as a close fit within the bore of the inner bearing ring to prevent penetration of liquid between the shaft and the inner bearing ring from said one end thereof.
2. A bearing assembly as claimed in claim 1, wherein the shaft seal is incorporated in, or consists of, a protective cover mounted on the inner bearing ring and arranged to act as a flinger to deflect stones, water or liquid from direct impingement on the bearing seals between the outer and inner bearing rings.
3. A bearing assembly as claimed in claim 1 or 2, wherein the shaft seal comprises an annular cover mounted on said one end of the inner bearing ring, and an annular sealing element of elastomeric material mounted around the inside of the cover and adapted to make sealing contact with a shaft in the bore of the inner bearing ring.
4. A bearing assembly as claimed in claim 3, wherein said annular sealing element comprises an 0 ring mounted in an annular recess around the inside of the cover.
5. A bearing assembly as claimed in claim 3, wherein said annular sealing element is bonded to the cover and has a lip adapted to make sealing contact with said shaft.
6. A bearing assembly as claimed in claim 5, wherein the annular cover has a cylindrical section formed with a radially inturned flange at one end thereof, the cylindrical section being a close fit on the outer surface of the inner bearing ring and the sealing element being bonded to said flange, the sealing element having an
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (12)
1. A bearing assembly comprising outer and inner bearing rings rotatably mounted relative to one another by rolling elements disposed between the two rings, the inner bearing ring having a bore for reception of a shaft to be supported by or supporting the bearing assembly, and bearing seals between the outer and inner bearing rings, wherein at least one end of the inner bearing ring is provided with a shaft seal mounted on the inner bearing ring and adapted to co-operate with a shaft mounted as a close fit within the bore of the inner bearing ring to prevent penetration of liquid between the shaft and the inner bearing ring from said one end thereof.
2. A bearing assembly as claimed in claim 1, wherein the shaft seal is incorporated in, or consists of, a protective cover mounted on the inner bearing ring and arranged to act as a flinger to deflect stones, water or liquid from direct impingement on the bearing seals between the outer and inner bearing rings.
3. A bearing assembly as claimed in claim 1 or 2, wherein the shaft seal comprises an annular cover mounted on said one end of the inner bearing ring, and an annular sealing element of elastomeric material mounted around the inside of the cover and adapted to make sealing contact with a shaft in the bore of the inner bearing ring.
4. A bearing assembly as claimed in claim 3, wherein said annular sealing element comprises an 0 ring mounted in an annular recess around the inside of the cover.
5. A bearing assembly as claimed in claim 3, wherein said annular sealing element is bonded to the cover and has a lip adapted to make sealing contact with said shaft.
6. A bearing assembly as claimed in claim 5, wherein the annular cover has a cylindrical section formed with a radially inturned flange at one end thereof, the cylindrical section being a close fit on the outer surface of the inner bearing ring and the sealing element being bonded to said flange, the sealing element having an
additional lip in sealing contact with the adjacent end face of the inner bearing ring.
7. A bearing assembly as claimed in claim 3, wherein said annular sealing element is
clamped between the cover and the adjacent end face of the inner bearing ring, the sealing element having a lip adapted to make sealing contact with said shaft.
8. A bearing assembly as claimed in claim 7, wherein the annular cover has a cylindrical section formed with a radially inturned flange at one end thereof, the cylindrical section being a close fit on the outer surface of the inner bearing ring and the sealing element being clamped between the adjacent end face of the inner bearing ring and said flange.
9. A bearing assembly as claimed in claim
1 or 2, wherein the shaft seal comprises an annular cover of elastomeric material mounted as a liquid tight fit on said one end of the inner bearing ring, the inner periphery of the cover being formed with a serrated surface adapted to make sealing engagement with a shaft mounted as a close fit within the bore of the inner bearing ring.
10. A bearing assembly as claimed in any of claims 3, 4 or 9, wherein the inside surface of the annular cover has a cylindrical portion which is a close fit on the outer surface of the inner bearing ring and a radial portion which abuts against the end face of the inner bearing ring.
11. A bearing assembly as claimed in any of claims 2-10, wherein said cover includes a frusto-conical skirt flared radially outwards in an axial direction towards the outer bearing ring, the free end of the skirt being spaced close to the outer bearing ring to form a labyrinth seal which, together with grease within the cover, assists in preventing ingress of liquid or dirt into the bearing assembly.
12. A bearing assembly provided with a shaft seal substantially as hereinbefore described with reference to any of Figures 1, 3, 4 or 5 of the accompanying drawing.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19161/77A GB1601573A (en) | 1977-05-06 | 1977-05-06 | Protective cover for bearing assemblies |
| JP5322978A JPS53139044A (en) | 1977-05-06 | 1978-05-02 | Bearing assembly |
| IT23065/78A IT1095870B (en) | 1977-05-06 | 1978-05-05 | PROTECTION COVER FOR BEARING COMPLEXES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19161/77A GB1601573A (en) | 1977-05-06 | 1977-05-06 | Protective cover for bearing assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1601573A true GB1601573A (en) | 1981-10-28 |
Family
ID=10124787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19161/77A Expired GB1601573A (en) | 1977-05-06 | 1977-05-06 | Protective cover for bearing assemblies |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS53139044A (en) |
| GB (1) | GB1601573A (en) |
| IT (1) | IT1095870B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168114A (en) * | 1984-11-30 | 1986-06-11 | Swf Auto Electric Gmbh | Bearing and sealing device |
| CN103216536A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | L-shaped outer spherical surface aligning bearing seat with safety protection cover |
| CN103216525A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | T-shaped outer spherical surface aligning bearing seat with safety protection cover |
| CN103216535A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | Y-shaped outer spherical surface aligning bearing seat with protection cover |
| CN103244567A (en) * | 2013-05-02 | 2013-08-14 | 浙江中烟工业有限责任公司 | F-shaped external spherical surface self-aligning bearing seat provided with safe protective cover |
-
1977
- 1977-05-06 GB GB19161/77A patent/GB1601573A/en not_active Expired
-
1978
- 1978-05-02 JP JP5322978A patent/JPS53139044A/en active Pending
- 1978-05-05 IT IT23065/78A patent/IT1095870B/en active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168114A (en) * | 1984-11-30 | 1986-06-11 | Swf Auto Electric Gmbh | Bearing and sealing device |
| GB2168114B (en) * | 1984-11-30 | 1989-07-12 | Swf Auto Electric Gmbh | Bearing and sealing device |
| CN103216536A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | L-shaped outer spherical surface aligning bearing seat with safety protection cover |
| CN103216525A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | T-shaped outer spherical surface aligning bearing seat with safety protection cover |
| CN103216535A (en) * | 2013-05-02 | 2013-07-24 | 浙江中烟工业有限责任公司 | Y-shaped outer spherical surface aligning bearing seat with protection cover |
| CN103244567A (en) * | 2013-05-02 | 2013-08-14 | 浙江中烟工业有限责任公司 | F-shaped external spherical surface self-aligning bearing seat provided with safe protective cover |
| CN103244567B (en) * | 2013-05-02 | 2015-07-08 | 浙江中烟工业有限责任公司 | F-shaped external spherical surface self-aligning bearing seat provided with safe protective cover |
| CN103216525B (en) * | 2013-05-02 | 2015-09-02 | 浙江中烟工业有限责任公司 | A kind of T-shaped outer spherical surface regulating center bearing base with safty shield |
| CN103216536B (en) * | 2013-05-02 | 2015-10-14 | 浙江中烟工业有限责任公司 | A kind of L-type outer spherical surface regulating center bearing base with safty shield |
| CN103216535B (en) * | 2013-05-02 | 2015-10-14 | 浙江中烟工业有限责任公司 | A kind of Y type outer spherical surface regulating center bearing base with protective housing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53139044A (en) | 1978-12-05 |
| IT1095870B (en) | 1985-08-17 |
| IT7823065A0 (en) | 1978-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |