GB2050566A - End cap assemblies for conveyor rollers - Google Patents
End cap assemblies for conveyor rollers Download PDFInfo
- Publication number
- GB2050566A GB2050566A GB7908394A GB7908394A GB2050566A GB 2050566 A GB2050566 A GB 2050566A GB 7908394 A GB7908394 A GB 7908394A GB 7908394 A GB7908394 A GB 7908394A GB 2050566 A GB2050566 A GB 2050566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- end cap
- annular
- housing
- end cover
- cap assembly
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/09—Arrangements of bearing or sealing means
-
- 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
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/02—Bearings
- F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
-
- 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
-
- 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
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
-
- 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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
- F16J15/4478—Pre-assembled packings
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
For a conveyor roller in which a roller tube is fitted to end cap assemblies incorporating bearings for rotatably mounting the roller tube on a fixed shaft, each end cap assembly comprises a housing (10), a ball bearing (11) mounted in the housing, and an end cover (12) having a central bore for reception of the shaft (46) as a close sliding fit, the housing and end cover have annular concentric tongues (27, 36, 37) which are interleaved to form an annular labyrinth passageway providing a seal between the housing and the end cover. The inner end of the labyrinth passageway is closed by an annular seal (13) compressed between the housing and the end cover. The end cover has an annular flange (39) extending as a close fit through the inner bearing ring (31) and secured therein by abutments on the flange engaging opposite sides of the inner bearing ring, while the outer bearing ring (30) tightly fits within flange (15) of housing (10), so that the end cap assembly is a self contained unit. <IMAGE>
Description
SPECIFICATION End cap assemblies for conveyor rollers This invention relates to conveyor rollers of the kind comprising a roller tube fitted with end cap assemblies incorporating bearings for rotatably mounting the roller tube on a fixed shaft.
The environment in which conveyor rollers operate can be very arduous in terms of dust, dirt, and water entering the bearings and causing them to fail by seizure, and it is therefore necessary protect the bearings by seals. Known seal arrangements which will provide a reasonable degree of protection require a significant amount of axial space outboard of the bearing and it is necessary to position the bearings a greater distance inboard along the shaft from where the roller shaft is supported by the frame of the conveyor.
The object of the invention is to provide an improved construction of end cap assembly having a particularly compact arrangement of seals.
According to the present invention there is provided an end cap assembly for use in a conveyor roller, comprising a housing forming a substantially rigid annular frame, a bearing mounted in said frame, and an end cover for the bearing, the end cover being rotatable relative to the frame, wherein the housing and the end cover are formed of plastics material and co-operate with one another to form an annular compartment and an annular labyrinth passageway surrounding the compartment with the radially inner end of the labyrinth passageway opening into the compartment, and an annular seal is compressed in said compartment so as to close the radially inner end of the labyrinth passageway.
In a preferred construction of the end cap assembly of the invention, the housing comprises a radially extending end wall formed with concentric annular tongues interleaved with corresponding tongues on the end cover to form the labyrinth passageway. At least some of the tongues may be lined with fibre flock.
The end cap assembly of the invention has the advantage that the axial space occupied by the seal arrangement is less than that hitherto considered necessary for use in conveyor rollers.
This has been achieved by contouring the housing and end cover to form the labyrinth seal, and by positioning a further annular seal inside the labyrinth seal to close the inner end of the labyrinth passageway. In this way, the maximum use is made of the space between the inner and outer peripheries of the end cap assembly.
In conveyor rollers fitted with end cap assemblies according to the invention, the reduction in the axial space occupied by the sealing means, compared to the prior known conveyor rollers, enables each bearing to be positioned closer to the point on which the shaft is supported on the frame or bracket, and this has the effect of increasing the calculated life of the bearing. Moreover the diameter of the shaft can be reduced when the bearing is positioned closer to the point on which the shaft is supported.
End cap assemblies according to the invention may be provided with different seal arrangements for use in different operating conditions. Rollers in a conveyor unit can have differing sealing requirements to combat moisture, dust and friction torque. Each of these conditions can be catered for by use of an end cap assembly having a seal pack with particular sealing characteristics.
For this purpose, the end cover of each end cap assembly can conveniently be provided with signal means or a particular colour representative of the characteristics of its seal. Alternatively, the housing of an end cap assembly may be provided with a plurality of end covers each adapted to be fitted to the housing to form an end cap assembly according to the invention, each end cover being fitted with a different annular seal having different characteristics particularly suitable for use in different operating conditions, and each end cover having indicia denoting the particular characteristics of its seal.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 is an end view of an end cap assembly for a conveyor roller, taken in the direction of arrow A in Figure 2,
Figure 2 is a cross sectional side elevation of the end cap assembly of Figure 1,
Figure 3 is an end view of the end cap assembly taken in the direction of arrow B in Figure 2,
Figure 4 is a cross sectional side elevation of one end of a conveyor roller incorporating the end cap assembly of Figures 1-3, Figure 5 is a cross sectional side elevation of the upper half of one end of a conveyor roller incorporating a modified construction of end cap assembly,
Figure 6 is a view similar to Figure 5 and showing another modified construction of end cap assembly, and
Figure 7 is a cross sectional view of the upper half of the end cap assembly of Figures 1-3 but fitted with a different construction of seal and a protective shield.
The end cap assembly shown in Figures 1-3 comprises a housing 10 fitted with a ball bearing 1 an end cover 12 engaged as a snap fit in the bore of the bearing, and an annular felt seal 13 compressed between the housing and the end cover.
The housing 10 is made of a resilient plastics material, preferably glass fire reinforced nylon, and comprises a cylindrical inner wall 15, a cylindrical outer wall 1 6 surrounding the inner wall 15, an end wall 17 integral with adjacent ends of the walls 15, 16, and a plurality of radial webs 18 (Figure 3) spaced around the housing and extending between the inner and outer walls 1 5, 16, the webs 18 being integral with the walls 15, 16, 1 7. A cylindrical sleeve 19 surrounds the wall 16 and is connected thereto at the end remote from end wall 17 by an annular bight portion 20 of
U-shaped cross section, to form a spring support for the end cap assembly. The end of the sleeve 19 remote from the bight portion 20 is formed with a radial flange 21.The end of the cylindrical inner wall 1 5 remote from wall 17 is formed with an annular step 22 forming an abutment for the bearing 11, and a further end wall 23 integral with the step 22 extends radially inwards as shown in
Figure 2. The inner periphery of the end wall 23 is formed with an axially-extending annular flange 23' which terminates close to the inner ring of the bearing.
The outside surface of the outer wall 1 6 of the housing is formed with a plurality of axially extending ribs 24 spaced around the housing, each rib being radially aligned with one of the radial webs 1 8. The ends of the ribs 24 adjacent the bight portion 20 have radially outer surfaces
25 which are flat and parallel and spaced close to
the inside surface of the sleeve 19, and the
remainder of the radially outer surfaces 25 of the
ribs are curved radially inwards in the axial
direction away from the bight portion 20. The end
wall 1 7 is formed with two concentric annular
tongues 26, 27 on the side remote from the webs
18, the radially outer tongue 26 having a curved
outer surface which forms an extension of the
curved outer surfaces 25 of the ribs 24.
The ball bearing 11 comprises an outer bearing
ring 30, an inner bearing ring 31 and balls 32 in
rolling engagement with grooved tracks on the
rings 30, 31 so that the bearing is capable of
resisting radial forces and axial forces in both
directions. The outer ring 30 is a tight fit against
the inside surface of the cylindrical wall 1 5 and
abuts against the step 22.
The end cover 1 2 is also made of resilient
plastics material, preferably unfilled nylon, and
comprises an annular disc 35 formed on one side with three concentric annular tongues 36, 37, 38 and a cylindrical flange 39 at the centre of the disc
35. The free end of flange 39 is split axially and formed into four resilient fingers 40 having enlarged ends 41 which extend through the bore of the inner bearing ring 31 and engage as a snap fit on the chamfer thereof, and the centre portion of the flange 39 is formed with an annular step 42 which abuts against the adjacent face of the inner bearing ring when the enlarged ends on the fingers engage the opposite side of the inner
bearing ring, thereby axially locating the end cover
relative to the bearing and the housing 10.The
radially outer tongue 36 on the cover projects between the tongues 26, 27 on the housing, and the tongue 37 on the cover is spaced close to the tongue 27 on the housing, so as to provide a narrow tortuous gap between the tongues 37, 27, 36, 26 forming a labyrinth seal between the housing and the cover.
The annular felt seal 13 is mounted as a close fit in the annular recess formed between the tongues 37, 38 on the cover, and has an axial width such that it is compressed between the cover and the housing so as to be in rubbing contact with the end wall 1 7 of the housing upon rotation of the housing relative to the cover. The seal 13 thus closes off the radially inner end of the narrow gap of the labyrinth seal. The annular recess 45 between the tongue 38 and the cylindrical flange 39 on the cover is filled with grease for lubricating the bearing, the seal 13 preventing escape of the grease through the labyrinth.
The end cap assembly is designed for use with a cylindrical steel roller tube having an internal diameter such that the sleeve 1 9 of the end cap assembly is a hand push-fit within the roller tube, the roller tube having an external diameter which is not smaller than that of the flange 21. The end cap assembly is secured in position in the end of the roller tube, with the flange 21 abutting the end of tube by swaging the end of the roller tube radially inwards, that is reducing the diameter of the end of the roller tube by external pressure, so as to force the sleeve 1 9 against the ribs 24 on the housing as shown in Figure 4.The walls 15, 1 6, 1 7 and the radial webs 1 8 form a substantially rigid frame which resists deformation under the swaging pressure applied to the roller tube. The swaging operation is preferably controlled by a pressure transducer designed to prevent the swaging pressure exceeding a predetermined maximum value.
The end cap assembly, fitted in the roller tube, is mounted on a shaft 46 (Figure 4) fixed in the frame of a conveyor, the shaft 46 being a close sliding fit in the bore of the cylindrical flange 39 on the cover. The end cap assembly may be axially located by a circlip 47 engaged in a groove in the shaft as shown in Figure 4.
In a modified construction of the end cap assembly shown in Figure 5 the end of the bore in the cover remote from the fingers 40 is formed with a diameter slightly less than that of the shaft 46 and the remainder of the bore to form a lip 48.
When the end cap assembly is being mounted on the shaft 46, the lip 48 is deflected radially outwards by engagement with the shaft until the lip is brought into register with an annular groove in the shaft. The lip then snaps into the groove and locates the end cap assembly axially on the shaft.
Figure 6 shows a further modified construction of the end cap assembly in which the end of the bore in the cover remote from the fingers 40 is formed with a resilient annular tongue 49 which
projects into the bore but is movable radially outwards against its own resilience into an annular recess in the cover. The tongue 49 is
adapted to snap into a groove in the shaft to
locate the end cap assembly axially on the shaft, in the same way as that of the lip 48 in Figure 5. The tongue 49 of Figure 6 has however the additional advantage that it engages the bottom of the groove in the shaft and acts as a seal between the
cover and the shaft.
The felt seal ring 13 shown in Figures 1 and 4
may be replaced by a seal consisting of an axially
narrower ring 50 of felt and a further ring 51 of
resilient material, for example foam plastics, compressed between the cover and the ring 50 so as to exert a force on the ring 50 urging it into rubbing contact with the end wall 17 of the housing. The rings 50, 51 may be bonded to one another. Alternatively, the seal 1 3 may be replaced by lip seals of polyurethane or other suitable material as shown at 52 and 53 in Figures 6 and 7 respectively. In addition, the annular tongues 27, 36 on the housing and cover respectively may be provided with fibreflock to increase the resistance to passage of dust/fluid through the layrinth seal.
The end cover 12 of the end cap assembly is preferably provided with indicia representative of the operational characteristics of the annular seal mounted in the recess between the tongues 37, 38. For example, the end covers of end cap assemblies fitted with seals suitable for use on waterlogged sites, in dusty conditions or in a slurry respectively may each be of a different colour, so that an operator can select the end cap assembly suitable for any given operating conditions without dismantling the end cap assembly to identify the seal. Alternatively, a plurality of end covers each fitted with a different seal identified by indicia on the cover may be provided for use selectively with a housing 10 fitted with a ball bearing.
As shown in Figure 7, the end cap assembly is preferably provided with a detachable annular shield 55 to prevent contamination of the bearing during handling or storage prior to being assembled into a tube. The shield, which can conveniently be made of cardboard or plastics, comprises a cylindrical tube 56 adapted to be a close sliding fit in the bore of the end cover, and an annular flange 57 on one end of the tube 56 adapted to engage flat against the end wall 23 on the housing when the tube 56 is engaged in the bore of the cover.
Claims (11)
1. An end cap assembly for use in a conveyor roller, comprising a housing forming a substantially rigid annular frame, a bearing mounted in said frame, and an end cover for the bearing, the end cover being rotatable relative to the frame, wherein the housing and the end cover are formed of plastics material and co-operate with one another to form an annular compartment and an annular labyrinth passageway surrounding the compartment with the radially inner end of the labyrinth passageway opening into the compartment, and an annular seal is compressed in said compartment so as to close the radially inner end of the labyrinth passageway.
2. An end cap assembly as claimed in claim 1 wherein the housing comprises a radially extending end wall formed with concentric annular tongues interleaved with corresponding tongues on the end cover to form said labyrinth passageway.
3. An end cap assernbly as claimed in claim 2, wherein at least some of said tongues are lined with fibre flock.
4. An end cap assembly as claimed in any of claims 1-3, wherein said compartment is defined by an annular channel in the end cover and a flat radial surface on the housing, the annular seal being mounted in said channel.
5. An end cap assembly as claimed in any of the claims 1-4, wherein the annular seal comprises two rings arranged side by side in said compartment, one ring being made of fibrous material and the other ring being made of elastic material.
6. An end cap assembly as claimed in claim 5, wherein the two rings are bonded to one another.
7. An end cap assembly as claimed in any of the preceding claims, wherein the end cover is formed with a bore for a shaft engaged in the bearing, and the bore of the end cover is fitted with an annular ring of resilient material adapted to provide a seal between the bore of the end cover and said shaft.
8. An end cap assembly as claimed in any of claims 1-6 and fitted with a shaft extending through a bore in the end cover, wherein the end cover is formed with a resilient annular tongue which engages the base of an annular groove in the shaft so as to locate the end cap assembly on the shaft and provide a seal between the end cover and the shaft.
9. A plurality of end cap assemblies as claimed in any of claims 1-7, wherein at least some of the end cap assemblies are provided with annular seals having different characteristics particularly suitable for use in different operating conditions, and the end cover of each assembly is provided with signal means representative of the characteristics of its annular seal.
10. A housing of an end cap assembly as claimed in claim 4 and a plurality of end covers each adapted to be fitted to said housing to form an end cap assembly as claimed in claim 4, wherein each end cover is fitted with a different annular seal arranged to be compressed in said compartment when the cover is fitted to the housing, and each seal has different characteristics particularly suitable for use in different operating conditions.
11. The arrangement claimed in claim 10, wherein each end cover is provided with signal means representative of the characteristics of its annular seal.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7908394A GB2050566B (en) | 1979-03-09 | 1979-03-09 | End cap assemblies for conveyor rollers |
GB7914111A GB2043803B (en) | 1979-03-09 | 1979-04-23 | Seals |
EP80300645A EP0015739B1 (en) | 1979-03-09 | 1980-03-04 | Labyrinth seals |
GB8007249A GB2047845B (en) | 1979-03-09 | 1980-03-04 | Conveyor rollers |
DE8080300645T DE3062859D1 (en) | 1979-03-09 | 1980-03-04 | Labyrinth seals |
ZA00801331A ZA801331B (en) | 1979-03-09 | 1980-03-06 | Improvements in labyrinth seals |
ES489298A ES8107368A1 (en) | 1979-03-09 | 1980-03-07 | Labyrinth seals. |
CA000347248A CA1144199A (en) | 1979-03-09 | 1980-03-07 | Labyrinth seals |
AU56275/80A AU536521B2 (en) | 1979-03-09 | 1980-03-07 | Labyrinth seal |
US06/409,550 US4458957A (en) | 1979-03-09 | 1982-08-19 | Labyrinth seals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7908394A GB2050566B (en) | 1979-03-09 | 1979-03-09 | End cap assemblies for conveyor rollers |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2050566A true GB2050566A (en) | 1981-01-07 |
GB2050566B GB2050566B (en) | 1982-12-15 |
Family
ID=10503757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7908394A Expired GB2050566B (en) | 1979-03-09 | 1979-03-09 | End cap assemblies for conveyor rollers |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2050566B (en) |
ZA (1) | ZA801331B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2165621A (en) * | 1984-10-11 | 1986-04-16 | Skf Svenska Kullagerfab Ab | End cap assemblies for conveyor rollers |
US20200049201A1 (en) * | 2016-10-25 | 2020-02-13 | Moteurs Leroy-Somer | Machine with a system for axial blocking of the shaft |
-
1979
- 1979-03-09 GB GB7908394A patent/GB2050566B/en not_active Expired
-
1980
- 1980-03-06 ZA ZA00801331A patent/ZA801331B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2165621A (en) * | 1984-10-11 | 1986-04-16 | Skf Svenska Kullagerfab Ab | End cap assemblies for conveyor rollers |
US20200049201A1 (en) * | 2016-10-25 | 2020-02-13 | Moteurs Leroy-Somer | Machine with a system for axial blocking of the shaft |
Also Published As
Publication number | Publication date |
---|---|
ZA801331B (en) | 1981-08-26 |
GB2050566B (en) | 1982-12-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0015738B1 (en) | Bearing assemblies for conveyor rollers fitted with end covers | |
CA2035013C (en) | Static and dynamic shaft seal assembly | |
US5221095A (en) | Static and dynamic shaft seal assembly | |
US4989883A (en) | Static and dynamic shaft seal assembly | |
EP1058792B1 (en) | Bearing seals | |
EP0303359B1 (en) | Seal | |
US4428586A (en) | Combination wear sleeve and excluder lip adapted for easy installation | |
US5024449A (en) | Seal assembly for use with an overhang | |
US4799808A (en) | Compact seal | |
EP0371075B1 (en) | Oil seal with antirotation ribs | |
US6328312B1 (en) | Shaft seal assembly | |
US5259628A (en) | Seal assembly | |
AU607936B2 (en) | Molded rubber seal for bearing and stamping assembly | |
JPH0222246B2 (en) | ||
CA1064985A (en) | Rotary seal | |
US4592666A (en) | Sealing device for sealing a bearing | |
US8061901B2 (en) | Extension member for a flinger of a bearing | |
US4960335A (en) | Unitary enclosure and cover therefor | |
CA2102472A1 (en) | Seal Arrangement | |
US4267920A (en) | Conveyor belt roll | |
US5018750A (en) | Shaft seal assembly | |
GB2077371A (en) | Rotating shaft seal | |
US4452497A (en) | Grease seal for bearing arrangement | |
GB2050566A (en) | End cap assemblies for conveyor rollers | |
US4191432A (en) | Seal assembly for bearing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |