CN203962701U - Seal arrangement and rolling bearing for rolling bearing - Google Patents

Seal arrangement and rolling bearing for rolling bearing Download PDF

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Publication number
CN203962701U
CN203962701U CN201420361324.3U CN201420361324U CN203962701U CN 203962701 U CN203962701 U CN 203962701U CN 201420361324 U CN201420361324 U CN 201420361324U CN 203962701 U CN203962701 U CN 203962701U
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CN
China
Prior art keywords
plug
rolling bearing
seal arrangement
outer ring
fixed
Prior art date
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Expired - Fee Related
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CN201420361324.3U
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Chinese (zh)
Inventor
马上英信
今野胜広
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NSK Ltd
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NSK Ltd
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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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race
    • F16C33/785—Bearing shields made of sheet metal
    • 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
    • F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/388—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered 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
    • 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
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

The utility model provides a kind of rolling bearing seal arrangement and rolling bearing, the bias of axle, inclination, also the sealing of bearing can be remained to good in the case of having occurred.Oil sealing (20) has plug (30) and elastomer (40).Plug (30) has the first plug (32) extending to radially inner side and the second plug (34) extending to radially inner side.Elastomer (40) has: joint (43), and it is connected the first plug (32) with the second plug (34); And sealed lip (44), it is fixed on the second plug (34), and with inner ring (12) sliding contact.

Description

Seal arrangement and rolling bearing for rolling bearing
Technical field
The utility model relates to rolling bearing seal arrangement and rolling bearing.
Background technique
Roll for the continuous casting machine of the metallic material such as rolling iron and steel has following structure: will be arranged at cylindrical portion on the coaxial line at its axial two end part, that be called as roll neck by for example multiple row cone rolling rotation supporting freely.Such continuous casting machine equipment, utilizes continuously and supplies with lubricating grease to bearing all the time for fat mechanism normally without the non-tight type of seal ring with bearing.
In addition, as continuous casting machine equipment bearing, also there is the seal type that possesses seal arrangement in order to prevent rolling water, cooling water from invading bearing inside.As such seal arrangement, known have by the seal arrangement that forms of contact seal construction, this contact seal construction blocks the axial end portion opening of bearing, and make sealed lip and the surface of contact sliding contact (for example,, with reference to patent documentation 1) of the bearing interior space sealing between inner ring and outer ring.In the seal arrangement of patent documentation 1, be embedded with metal ring at the cardinal extremity position of sealed lip, utilize this metal ring to strengthen cardinal extremity position.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2003-227522 communique
Model utility content
Model utility technical problem to be solved
But continuous casting equipment owing to using in the environment that has water vapor, scale, therefore, lubricating grease is easily polluted by water, scale, if by contaminated lubricating grease to bearing internal feed, involve wearing and tearing, the breakage of bearing.And each continuous casting machine needs every year the use amount of the continuous lubricating grease for fat of about 30 tons～70 tons, therefore, the amount of lubricating grease waste is huge, likely causes environmental pollution, and the processing of lubricating grease waste is also numerous and diverse and cost is high.Like this, the use amount, the development environment that face minimizing lubricating grease are born the problem of few bearing.
Therefore,, as patent documentation 1, also considered to use the bearing of the seal type with seal arrangement, but, in sealing device, in the case of having occurred the bias of axle, inclination, the contact condition of seal arrangement and surface of contact changes, and produces strong abutment portion and light abutment portion.So, with the part of the strong butt of surface of contact, easily occur damaged.On the other hand, with the part of the light butt of surface of contact, due to and surface of contact between magnitude of interference little, so the oiling agent of bearing inside easily leaks, and foreign matter easily invades from outside, likely causes the damage in advance of bearing.
The utility model completes in view of the above-mentioned problems, provides and bias in the case of having there is axle, inclination, also the sealing of bearing can be maintained to good rolling bearing seal arrangement and rolling bearing.
For solving the technological scheme of problem
Above-mentioned purpose of the present utility model is reached by following formation.
(1) a rolling bearing seal arrangement, is characterized in that,
Have: plug, it is fixed on outer member or inner member; And elastomer, it is fixed on described plug,
Described plug has the first plug radially extending and the second plug radially extending,
Described elastomer has: joint, and it is connected described the first plug with described the second plug; And sealed lip, it is fixed on described the second plug, and with inner member or outer member sliding contact.
(2) the rolling bearing seal arrangement as described in (1), is characterized in that,
The radial section of described elastomeric joint is linearly shape or the curved shape tilting to axial inner side or is serpentine shape.
(3) the rolling bearing seal arrangement as described in (1) or (2), is characterized in that,
Described elastomer has auxiliary lip, described auxiliary lip is fixed on described the second plug and is positioned at than described sealed lip by the axial position of inner side, and and described inner member between or and described outer member between form and contact or non-contacting sealing.
(4) rolling bearing, is characterized in that,
There is the rolling bearing seal arrangement as described in wantonly 1 in (1)～(3).
(5) rolling bearing as described in (4), is characterized in that,
Described outer member is spherical bearing block or the outer ring of outer ring or outer ring and the radial outside that is configured in this outer ring and the seal holder that is configured in the axial outside of this outer ring,
Described inner member is inner ring.
The effect of model utility
According to rolling bearing seal arrangement of the present utility model, plug has the first plug radially extending and the second plug radially extending, and elastomer has: joint, and it is connected the first plug with the second plug; And sealed lip, it is fixed on the second plug, and with inner member or outer member sliding contact.Thereby, the bias of axle, inclination, also follow bias, the inclination of axle in the case of having occurred by elastomeric joint, thereby can maintain contacting of sealed lip and inner member or outer member.In addition, sealed lip is fixed on the second plug, therefore, can be constant by the magnitude of interference between sealed lip and inner member or outer member and urgent force retaining, can bring into play good sealability.
Brief description of the drawings
Fig. 1 is the major component sectional view of the self-aligning rolling bearing of mode of execution.
Fig. 2 is the major component sectional view of rolling bearing seal arrangement.
Fig. 3 is the major component sectional view of seal arrangement for the rolling bearing of variation.
Fig. 4 is the major component sectional view of seal arrangement for the rolling bearing of another variation.
Fig. 5 is the major component sectional view of cylinder rolling bearing.
Fig. 6 is the major component sectional view of multiple row cone rolling.
Fig. 7 is the major component sectional view of the multiple row cone rolling with spherical bearing block.
Fig. 8 is the major component sectional view of the cylinder rolling bearing with spherical bearing block.
Fig. 9 is the major component sectional view of the multiple row cone rolling with spherical bearing block.
Figure 10 is the major component sectional view of the cylinder rolling bearing with spherical bearing block.
Figure 11 is the major component sectional view of steel equipment with four row cone rollings.
Figure 12 is the major component sectional view of steel equipment with four row cylinder rolling bearings.
Figure 13 is the major component sectional view of steel equipment biserial cylinder rolling bearing.
Description of reference numerals
10 self-aligning rolling bearings (rolling bearing)
11 outer rings (outer member)
11a outer ring raceway ditch
11b slot part
12 inner rings (inner member)
12a inner ring raceway ditch
12b slot part
13 retainers
14 rollers
15 through holes
20 rolling bearing seal arrangements
30 plugs
32 first plugs
32a radially inner side end
34 second plugs
34a radial outside end
34b radially inner side end
40 elastomers
41 first extension parts
42 second extension parts
43 joints
44 sealed lips
44a radially inner side end
44b outer circumferential face
45 buffering lips (auxiliary lip)
45a radially inner side end
50 springs
80 spherical bearing blocks (outer member)
80a slot part
90 seal holder (outer member)
Embodiment
Below, describe the rolling bearing seal arrangement of a mode of execution of the present utility model in detail based on accompanying drawing.
As shown in Figure 1, the self-aligning rolling bearing 10 of present embodiment possesses: as the outer ring 11 of outer member, it is formed with the outer ring raceway ditch 11a of spherical shape on inner peripheral surface; As the inner ring 12 of inner member, it is formed with the inner ring raceway ditch 12a of the spherical shape of biserial on outer circumferential face; The roller 14 of multiple cydariforms as rolling element, is rolled and is kept freely by retainer 13, and permutation becomes two row and roll to be configured in freely between outer ring raceway ditch 11a and inner ring raceway ditch 12a; And a pair of oil sealing 20 of using seal arrangement as rolling bearing, configure in the mode that the axial two end part opening in existing space between the inner peripheral surface of outer ring 11 and the outer circumferential face of inner ring 12 is stopped up respectively, by bearing inner sealing.
Axial intermediate portion in outer ring 11 is formed with through hole 15, and this through hole 15 extends through inner peripheral surface from outer circumferential face, oiling agent can be supplied to bearing space and can release air.In addition, also can on through hole 15, be provided with internal thread part (not shown), and the stopper screw thread for stuffing box bearing space is incorporated into this internal thread part.In addition, as long as enclose the formation of oiling agent in bearing space, through hole 15 also can be set.At this, oiling agent employing viscosity under 40 DEG C of conditions of enclosing in bearing space is 300mm 2/ s～500mm 2the full-bodied lubricant oil of/s or under 40 DEG C of conditions kinetic viscosity be 70mm 2/ s～500mm 2the heat resistance forming by base oil with as the urea of water-thickening agent of/s and the lubricating grease of excellent in wear resistance.
With reference to Fig. 2, oil sealing 20 is formed as roughly toroidal on the whole, has simultaneously: plug 30, and it is fixed on the inner peripheral surface of outer ring 11; And elastomer 40, its axial outer side surface that is fixed on plug 30 (represents vertically the face towards the outside of bearing.), formed by rubber elastomeric material.
Plug 30 is pressed into and is fixed on the slot part 11b of the axial outboard end of the inner peripheral surface that is formed on outer ring 11, and is split into: the first plug 32, and it extends to radially inner side, and for L word shape roughly, (following, cross section represents radial section to section.); And second plug 34, its radially inner side end 32a than the first plug 32 configures by axial inner side, extends to radially inner side, and section is rectilinear form roughly.
Elastomer 40 has: the first extension part 41, and it is fixed on the axial outer side surface of the first plug 32, and section is L word shape roughly; The second extension part 42, it is fixed on the axial outer side surface of the second plug 34, and section is rectilinear form roughly; And joint 43, itself and the first extension part 41 and the second extension part 42 are continuous, and the radial outside end 34a of the radially inner side end 32a of the first plug 32 and the second plug 34 is connected.At this, the radially inner side end 32a of the first plug 32 is positioned at the position by radial outside than the radial outside end 34a of the second plug 34, therefore, the joint 43 of elastomer 40 is constituted as the roughly rectilinear form of section tilting to radially inner side along with going towards axial inner side.
In addition, elastomer 40 has sealed lip 44, and sealing lip 44 is connected with the radially inner side end of the second extension part 42, and is fixed on vertically the radially inner side end 34b of the second plug 34.The slot part 12b of the radially inner side end 44a of sealed lip 44 and the axial outboard end that is formed on outer circumferential face of inner ring 12 flexibly sliding contact and will be between outer ring 11 and inner ring 12 sealing.In addition, due to need to make sealed lip 44 reliably with the slot part 12b sliding contact of inner ring 12, so on the outer circumferential face 44b of sealed lip 44 mounting spring 50, the elastic force of utilizing this spring 50 is the slot part 12b side application of force to inner ring 12 to sealed lip 44.
And elastomer 40 has buffering lip 45, this buffering lip 45 extends continuously and to axial outside from the radially inner side end 34b of the second plug 34, and, be positioned at the position by axial inner side than sealed lip 44.The radially inner side end 45a of buffering lip 45 is formed as being positioned at the position by radial outside than the radially inner side end 44a of sealed lip 44, and as and the slot part 12b of inner ring 12 between form non-contacting sealing auxiliary lip work.
As described above, according to the oil sealing 20 of present embodiment, plug 30 has: the first plug 32, and it is fixed on the inner peripheral surface of outer ring 11 and extends to radially inner side; And second plug 34, it configures to such an extent that lean on axial inner side and extend to radially inner side than the radially inner side end 32a of the first plug 32, elastomer 40 has: joint 43, and its radial outside end 34a by the radially inner side end 32a of the first plug 32 and the second plug 34 is connected; And sealed lip 44, it is fixed on the second plug 34, and the outer circumferential face sliding contact of its radially inner side end 44a and inner ring.Thereby, the bias of axle, inclination, also follow bias, the inclination of axle in the case of having occurred by the joint 43 of elastomer 40, thereby can maintain the contacting of outer circumferential face of sealed lip 44 and inner ring 12.In addition, sealed lip 44 is fixed on the second plug 34, therefore, can be constant by the magnitude of interference between sealed lip 44 and the outer circumferential face of inner ring 12 and urgent force retaining, can bring into play good sealability.
In addition, the radially inner side end 32a of the first plug 32 is positioned at the position by radial outside than the radial outside end 34a of the second plug 34, and the joint 43 of elastomer 40 is the roughly rectilinear form of section along with going towards axial inner side to tilt to radially inner side, therefore, in the case of having occurred the bias of axle, inclination, joint 43 is easy to bending, can improve the bias to axle, the tracing ability of inclination.
In addition, as shown in Figure 3, the shape of the joint 43 of elastomer 40 can be also the roughly curve shape of section with curvature, and in the case, joint 43 is easy to bending than the shape of Fig. 2, can further improve the bias to axle, the tracing ability of inclination.And, as shown in Figure 4, can be also to form roughly serpentine shape (bellows form) of irregular section on surface, in the case, joint 43 is further easy to bending than the shape of Fig. 3, can further improve the bias to axle, the tracing ability of inclination.
In addition, elastomer 40 has buffering lip 45, therefore, in the case of occurred the inclination of axle, eccentric, this buffering lip 45 cushions with the outer circumferential face of inner ring 12, can prevent inordinate wear and the distortion of sealed lip 44.
In addition, the utility model is not limited to above-mentioned each mode of execution, can suitably be out of shape, improvement etc.
For example, the plug 30 of oil sealing 20 also can not be fixed on outer ring 11, and is fixed on inner ring 12.In the case, the first plug 32 is fixed on inner ring 12, the second plugs 34 and outer ring 11 sliding contacts.
In addition, as the rolling bearing of application oil sealing 20, being not limited to above-mentioned self-aligning rolling bearing 10, can be also cylinder rolling bearing as shown in Figure 5, multiple row cone rolling as shown in Figure 6, the multiple row cone rolling with spherical bearing block as shown in Figure 7, the cylinder rolling bearing with spherical bearing block as shown in Figure 8, the not shown multiple row cylinder rolling bearing with spherical bearing block.The state that disposes outer ring 11 on the inner peripheral surface of spherical bearing block 80 has been shown in Fig. 7 and Fig. 8.In the case, outer ring 11 forms outer member with the spherical bearing block 80 of the radial outside that is configured in this outer ring 11.
In addition, as the rolling bearing of application oil sealing 20, can be also the multiple row cone rolling with spherical bearing block as shown in Figure 9, the cylinder rolling bearing with spherical bearing block as shown in Figure 10.In these bearings, with by the outer circumferential face of inner ring 12 and be configured in the mode that the axial end portion opening in existing space between spherical bearing block 80 inner peripheral surfaces of radial outside of outer ring 11 stops up, be formed with oil sealing 20, the plug 30 of oil sealing 20 is pressed into and is fixed on the slot part 80a of the axial outboard end of the inner peripheral surface that is formed on spherical bearing block 80.
In addition, as the rolling bearing of application oil sealing 20, can be also four row cone rollings steel equipment for as shown in Figure 11, four row cylinder rolling bearings for steel equipment, steel equipment use double row tapered roller dynamic bearing as shown in Figure 13 etc. as shown in Figure 12.In these bearings, with by the outer circumferential face of inner ring 12 and be configured in the mode that the axial end portion opening in existing space between the inner peripheral surface of seal holder 90 of the axial both sides of outer ring 11 stops up, be formed with oil sealing 20, the plug 30 of oil sealing 20 is pressed into and is fixed on the inner peripheral surface of seal holder 90.In the case, outer ring 11 forms outer member with the seal holder 90 in the axial outside that is configured in this outer ring 11.
In addition, in the above-described embodiment, as auxiliary lip, being provided with buffering lip 45, still, can be also the dust lip that prevents that dust from invading from outside.In addition, auxiliary lip is not necessarily limited to the formation contacting with the outer circumferential face of inner ring 12, and if the outer circumferential face of inner ring 12 between form sealing, also can non-contact.In addition, can be also the formation that auxiliary lip is not set.
In addition, rolling bearing of the present utility model is not limited to continuous casting machine equipment use, steel equipment use, also can be applied to other industrial machineries.

Claims (5)

1. a rolling bearing seal arrangement, is characterized in that,
Have: plug, it is fixed on outer member or inner member; And elastomer, it is fixed on described plug,
Described plug has the first plug radially extending and the second plug radially extending,
Described elastomer has: joint, and it is connected described the first plug with described the second plug; And sealed lip, it is fixed on described the second plug, and with inner member or outer member sliding contact.
2. rolling bearing seal arrangement as claimed in claim 1, is characterized in that,
The radial section of described elastomeric joint is linearly shape or the curved shape tilting to axial inner side or is serpentine shape.
3. rolling bearing seal arrangement as claimed in claim 1 or 2, is characterized in that,
Described elastomer has auxiliary lip, described auxiliary lip is fixed on described the second plug and is positioned at than described sealed lip by the axial position of inner side, and and described inner member between or and described outer member between form and contact or non-contacting sealing.
4. a rolling bearing, is characterized in that,
There is the rolling bearing seal arrangement as described in wantonly 1 in claim 1～3.
5. rolling bearing as claimed in claim 4, is characterized in that,
Described outer member is spherical bearing block or the outer ring of outer ring or outer ring and the radial outside that is configured in this outer ring and the seal holder that is configured in the axial outside of this outer ring,
Described inner member is inner ring.
CN201420361324.3U 2013-07-22 2014-07-01 Seal arrangement and rolling bearing for rolling bearing Expired - Fee Related CN203962701U (en)

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JP2013151872A JP2015021590A (en) 2013-07-22 2013-07-22 Seal device for rolling bearing and rolling bearing
JP2013-151872 2013-07-22

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN108343675A (en) * 2017-01-23 2018-07-31 纳博特斯克有限公司 Seal construction, rotating machinery and the containment member of rotating machinery
CN111503161A (en) * 2016-03-07 2020-08-07 日本精工株式会社 Rolling bearing, bearing unit for air turbine, and dental air turbine handpiece

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FR3060678B1 (en) * 2016-12-20 2019-12-20 Ntn-Snr Roulements ROLLING BEARING
US20210040991A1 (en) * 2019-08-09 2021-02-11 Amsted Rail Company, Inc. Roller Bearing Seal Case
WO2024199666A1 (en) * 2023-03-31 2024-10-03 Aktiebolaget Skf An inner ring for a self-aligning roller bearing

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JPH0429130Y2 (en) * 1986-09-01 1992-07-15
JPH0712736Y2 (en) * 1987-11-10 1995-03-29 日本精工株式会社 Spherical roller bearing
JP3988010B2 (en) * 1999-08-19 2007-10-10 株式会社ジェイテクト Slewing drive
JP2003227522A (en) 2002-02-04 2003-08-15 Ntn Corp Sealing device of bearing
JP2013060975A (en) * 2011-09-12 2013-04-04 Jtekt Corp Sealing device and roller bearing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111503161A (en) * 2016-03-07 2020-08-07 日本精工株式会社 Rolling bearing, bearing unit for air turbine, and dental air turbine handpiece
CN108343675A (en) * 2017-01-23 2018-07-31 纳博特斯克有限公司 Seal construction, rotating machinery and the containment member of rotating machinery

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