CN203362847U - Light-contact type sealed bearing - Google Patents
Light-contact type sealed bearing Download PDFInfo
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- CN203362847U CN203362847U CN 201320383385 CN201320383385U CN203362847U CN 203362847 U CN203362847 U CN 203362847U CN 201320383385 CN201320383385 CN 201320383385 CN 201320383385 U CN201320383385 U CN 201320383385U CN 203362847 U CN203362847 U CN 203362847U
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- ring
- bearing
- seal
- circle
- inner ring
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Abstract
The utility model discloses a light-contact type sealed bearing which comprises a bearing outer ring, a bearing inner ring, a holding frame and a rolling body, wherein the holding frame is arranged between the bearing outer ring and the bearing inner ring; the rolling body is arranged in the holding frame; outer ring sealing grooves are formed in the inner end faces of the two sides of the bearing outer ring; inner ring sealing grooves are formed in the outer end faces of the two sides of the bearing inner ring; a sealing ring are arranged between each outer ring sealing groove and each inner ring sealing groove on each side, and the sealing rings are arranged symmetrically; a grease return lip ring is arranged on the end face of an inner ring of each sealing ring; a normally contacted lip ring is arranged at the circumferential position of the inner ring of each sealing ring and on the same side of the grease return lip ring; and a dust-proof lip ring is arranged on the other side of the circumference of the inner ring of each sealing ring. According to the light-contact type sealed bearing provided by the utility model, the sealing effect of the bearing can be guaranteed when the bearing inner ring and the bearing outer ring are relatively inclined, the heating quantity of the bearing can be effectively reduced and the energy loss can be reduced.
Description
Technical field
The present invention relates to a kind of bearing, especially relate to a kind of light contact seal bearing, belong to the engineering element technical field.
Background technique
The bearing both sides such as the main roller used on forklift door frame at present, sprocket wheel, side wheel are provided with two contact sealing rings, in order to obtain good sealing state, prevent that lubricating grease leakage and environmental contaminants or water from immersing.But this bearing is in the process of using, lubricating grease often occurs to be revealed serious at a side sealing circle lip, opposite side is revealed lighter phenomenon, reason is: the forklift door frame bearing is all that inner ring is fixed usually, the outer ring rotation, when outer ring moves up and down along gantry channel-steel, can deflection occur because the reasons such as the quality state on channel-section steel surface, fork truck vibration cause between outer ring central axis and inner ring central axis, and then have influence on the contact condition between seal ring lip and seal groove, even some zone can form contactless state moment; In addition, such bearing grease injection amount surpasses more than 50% of bearing interior space usually, and during the positive and negative accelerated service of bearing, more lubricating grease can be extruded into seal ring lip position in moment, if now this lip is by chance in contactless state, will occur that lubricating grease is in the serious leakage phenomenon in this zone; In traditional contact seal forklift door frame bearing, mostly be single lip and radially or axially contact, and reveal in order to prevent lubricating grease, often adopt larger rubber magnitude of interference, this causes again the bearing starting torque excessive, the problems such as the lip wearing and tearing are very fast, and the bearing heating amount is larger, will seriously reduce the working life of bearing.
Summary of the invention
The purpose of this invention is to provide a kind of light contact seal bearing, this bearing can guarantee the sealing effect of bearing when the inside and outside circle generation of bearing relative tilt, can effectively reduce the bearing heating amount, reduces energy loss simultaneously.
The present invention is achieved by the following technical programs:
A kind of light contact seal bearing, comprise bearing outer ring, bearing inner race, retainer, rolling element, retainer is arranged between bearing outer ring and bearing inner race, rolling element is arranged in retainer, the interior edge face of bearing outer ring both sides is equipped with the outer ring seal groove, and the exterior edge face of bearing inner race both sides is equipped with the inner ring seal groove, at the outer ring of both sides seal groove, respectively be arranged with a seal ring between the inner ring seal groove, the interior ring end of seal ring is provided with back fat lip circle, be provided with the normal lip circle that contacts with the interior ring circumference place of the seal ring of the same side of returning fat lip circle, opposite side at the interior ring circumference of seal ring is provided with the dust excluder lips circle, seal ring is by the outer ring seal groove interference fit of its outer shroud and bearing outer ring, be provided with gap between the inner ring rib cylindrical that returns fat lip circle and bearing inner race of seal ring, the end face interference fit of the normal contact lip circle of seal ring and the inner ring seal groove of bearing inner race, be provided with gap between the notch of the dust excluder lips circle of seal ring and the inner ring seal groove of bearing inner race.
Purpose of the present invention can also further realize by following technical measures.
Aforesaid a kind of light contact seal bearing, the inside of seal ring radially also is provided with a skeleton.
Aforesaid a kind of light contact seal bearing, gap between the inner ring rib cylindrical that returns fat lip circle and bearing inner race of seal ring is 0.1-0.5mm, the end face magnitude of interference of the normal contact lip circle of seal ring and the inner ring seal groove of bearing inner race is 0.1-0.5mm, and the gap between the notch of the dust excluder lips circle of seal ring and the inner ring seal groove of bearing inner race is 0.1-0.5mm.
Seal ring of the present invention is made by the elastic material of rubber, synthetic resin, and certain elasticity is arranged, and seal ring is provided with back fat lip circle, often contacts the lip circle, and the dust excluder lips circle forms sealing area between these positions and outer ring seal groove, inner ring seal groove; When the inside and outside circle generation of bearing deflection, returning fat lip circle will produce and contact with the inner ring rib cylindrical, to make up normal contact lip circle magnitude of interference, reduce the impact on sealability, thereby the assurance seal ring can both be brought into play sealing effect preferably in each operating condition of bearing; Just, due to the grease backflow leading role and the magnitude of interference compensating action that return fat lip circle, the magnitude of interference that often contacts the lip circle can be less, and the bearing starting torque is lighter, and heating value is less, improves working life and the reliability of bearing; Another effect of returning fat lip circle is to change the mobile direction of lubricating grease, the lubricating grease that makes to be distributed in the skeleton inner surface of seal ring can flow into bearing inner race along returning the fat lip, better lubricating bearings, acting as of dust excluder lips circle prevents extraneous dust or the intrusion of other pollutants.
Advantage and disadvantage of the present invention, will be for illustration and explanation by the non-limitative illustration of following preferred embodiment, and these embodiments, only provide as an example with reference to accompanying drawing.
The accompanying drawing explanation
Fig. 1 is plan view of the present invention;
Fig. 2 is A enlarged view of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further on forklift door frame.
As shown in Figure 1, the present invention includes bearing outer ring 3, bearing inner race 2, retainer 5, rolling element 6, seal ring 4, retainer 5 is arranged between bearing outer ring 3 and bearing inner race 2, rolling element 6 is arranged in retainer 5, as shown in Figure 2, the interior edge face of bearing outer ring 3 both sides is equipped with outer ring seal groove 31, and the exterior edge face of bearing inner race 2 both sides is equipped with inner ring seal groove 22, at the outer ring of both sides seal groove 31, respectively be arranged with a seal ring 4 between inner ring seal groove 22, the interior ring end of seal ring 4 is provided with back fat lip circle 41, be provided with the normal lip circle 42 that contacts with the interior ring circumference place of the seal ring 4 of the same side of returning fat lip circle 41, opposite side at the interior ring circumference of seal ring 4 is provided with dust excluder lips circle 43, seal ring 4 is by outer ring seal groove 31 interference fit of its outer shroud and bearing outer ring 3, be provided with gap between the inner ring rib cylindrical 21 that returns fat lip circle 41 and bearing inner race 2 of seal ring 4, the normal contact lip circle 42 of seal ring 4 and end face 221 interference fit of the inner ring seal groove of bearing inner race 2, be provided with gap between the notch 222 of the dust excluder lips circle 43 of seal ring 4 and the inner ring seal groove of bearing inner race 2, the inside of seal ring 4 radially also is provided with a skeleton 44.
Embodiment one:
The gap of getting between the inner ring rib cylindrical 21 that returns fat lip circle 41 and bearing inner race 2 of seal ring 4 is 0.5mm, the normal contact lip circle 42 of seal ring 4 is 0.5mm with end face 221 magnitude of interference of the inner ring seal groove of bearing inner race 2, and the gap between the notch 222 of the dust excluder lips circle 43 of seal ring 4 and the inner ring seal groove of bearing inner race 2 is 0.5mm; When the inside and outside circle generation of bearing deflection, return interference fit between fat lip circle 41 and inner ring rib cylindrical 21, magnitude of interference is 0.2mm, often contacting lip circle 42 is 0.2mm with end face 221 magnitude of interference of inner ring seal groove.
Embodiment two:
The gap of getting between the inner ring rib cylindrical 21 that returns fat lip circle 41 and bearing inner race 2 of seal ring 4 is 0.1mm, the normal contact lip circle 42 of seal ring 4 is 0.1mm with end face 221 magnitude of interference of the inner ring seal groove of bearing inner race 2, and the gap between the notch 222 of the dust excluder lips circle 43 of seal ring 4 and the inner ring seal groove of bearing inner race 2 is 0.1mm; When the inside and outside circle generation of bearing deflection, return interference fit between fat lip circle 41 and inner ring rib cylindrical 21, magnitude of interference is 0.4mm, often contacting lip circle 42 is 0.01mm with end face 221 magnitude of interference of inner ring seal groove.
Embodiment three:
The gap of getting between the inner ring rib cylindrical 21 that returns fat lip circle 41 and bearing inner race 2 of seal ring 4 is 0.3mm, the normal contact lip circle 42 of seal ring 4 is 0.3mm with end face 221 magnitude of interference of the inner ring seal groove of bearing inner race 2, and the gap between the notch 222 of the dust excluder lips circle 43 of seal ring 4 and the inner ring seal groove of bearing inner race 2 is 0.3mm; When the inside and outside circle generation of bearing deflection, return interference fit between fat lip circle 41 and inner ring rib cylindrical 21, magnitude of interference is 0.3mm, often contacting lip circle 42 is 0.1mm with end face 221 magnitude of interference of inner ring seal groove.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
1. one kind light contact seal bearing, comprise bearing outer ring, bearing inner race, retainer, rolling element, described retainer is arranged between bearing outer ring and bearing inner race, described rolling element is arranged in retainer, it is characterized in that: the interior edge face of described bearing outer ring both sides is equipped with the outer ring seal groove, and the exterior edge face of described bearing inner race both sides is equipped with the inner ring seal groove, at the outer ring of both sides seal groove, respectively be arranged with a seal ring between the inner ring seal groove, the interior ring end of described seal ring is provided with back fat lip circle, be provided with the normal lip circle that contacts with the interior ring circumference place of the seal ring of the same side of returning fat lip circle, opposite side at the interior ring circumference of seal ring is provided with the dust excluder lips circle, described seal ring is by the outer ring seal groove interference fit of its outer shroud and bearing outer ring, be provided with gap between the inner ring rib cylindrical that returns fat lip circle and bearing inner race of described seal ring, the end face interference fit of the normal contact lip circle of described seal ring and the inner ring seal groove of bearing inner race, be provided with gap between the notch of the dust excluder lips circle of described seal ring and the inner ring seal groove of bearing inner race.
2. a kind of light contact seal bearing as claimed in claim 1, it is characterized in that: the inside of described seal ring radially also is provided with a skeleton.
3. a kind of light contact seal bearing as claimed in claim 1, it is characterized in that: the gap between the inner ring rib cylindrical that returns fat lip circle and bearing inner race of described seal ring is 0.1-0.5mm, the end face magnitude of interference of the normal contact lip circle of seal ring and the inner ring seal groove of bearing inner race is 0.1-0.5mm, and the gap between the notch of the dust excluder lips circle of seal ring and the inner ring seal groove of bearing inner race is 0.1-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320383385 CN203362847U (en) | 2013-07-01 | 2013-07-01 | Light-contact type sealed bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320383385 CN203362847U (en) | 2013-07-01 | 2013-07-01 | Light-contact type sealed bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362847U true CN203362847U (en) | 2013-12-25 |
Family
ID=49810619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320383385 Expired - Lifetime CN203362847U (en) | 2013-07-01 | 2013-07-01 | Light-contact type sealed bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362959A (en) * | 2013-07-01 | 2013-10-23 | 江苏希西维轴承有限公司 | Slight-contact type sealed bearing |
-
2013
- 2013-07-01 CN CN 201320383385 patent/CN203362847U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362959A (en) * | 2013-07-01 | 2013-10-23 | 江苏希西维轴承有限公司 | Slight-contact type sealed bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |