CN201209628Y

CN201209628Y - Double sealing bearing

Info

Publication number: CN201209628Y
Application number: CNU2008200344061U
Authority: CN
Inventors: 陆全; 王春南; 杨怀庆; 朱维国; 赵建文; 杨龙妹
Original assignee: 陆连运
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-03-18
Anticipated expiration: 2018-04-25

Abstract

The utility model provides a dual-seal bearing, comprising a bearing outer ring, a bearing inner ring, a retainer, a rolling element, a sealing ring and a dust cap. The dust cap is arranged at the outer side of the sealing ring; the sealing ring consists of a sealing element and a framework; the dust cap comprises a dust-proof steel plate; the inner side of the dust-proof steel plate is covered by a sealing lip having a flange; the flange contacts the outer side of the framework of the sealing ring; and the sealing ring, the dust cap and the outside surface of bearing inner ring form an annular cavity, which is filled with oil. The bearing has dual-seal structure and can effectively prevent the external fine dust from entering the bearing to improve the sealing performance of the bearing.

Description

Doubling sealed bearing

Technical field

The utility model relates to technical field of bearings, especially a kind of doubling sealed bearing.

Background technique

The general higher bearing of seal request, usually adopt seal ring to add the structural type of dust cover, dust cover is in the outside of seal ring, existing safeguard function, enter in the bearing in order to the impurity that stops extraneous thick particulate again, reach the purpose that improves the bearing seal performance, but dust cover only is the individual single structure made from steel plate, it and seal ring branch are arranged, and it is gapped between the bearing outer ring internal surface, tiny dust impurity can from this gap progressively enter and adhere to seal ring on, infiltrate in the bearing with the prolongation of bearing service time, influence the greasy property of bearing.

The model utility content

The technical problems to be solved in the utility model is: the utility model has overcome shortcoming of the prior art, a kind of doubling sealed bearing is provided, this bearing has double sealing structure, can stop effectively that extraneous tiny dust impurity infiltrates in the bearing, improves the sealing effect of bearing.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of doubling sealed bearing, has bearing outer ring, bearing inner race, retainer, rolling element, seal ring, dust cover, dust cover is positioned at the outside of seal ring, and described seal ring has Sealing and skeleton, and the interior week of Sealing contacts with the outer surface of bearing inner race, the embedded internal surface that is fixed on bearing outer ring in the outer ring of seal ring, described dust cover has dustproof steel plate, and dust cover is fixed on the outer surface of bearing inner race, and described dustproof steel plate inboard is coated with sealing lip, one protruding circle is arranged on the described sealing lip, the outer side contacts of the skeleton of described protruding circle and seal ring, seal ring, dust cover and bearing inner race outer surface form the cavity of annular, and filling completely has sealing material in the described cavity.

The sealing material of filling in the described furtherly cavity is a grease.

The beneficial effects of the utility model are, after the utility model adopts above scheme, formed double sealing structure, fill full grease in the toroidal cavity that seal ring, dust cover and bearing inner race outer surface form, can stop effectively that extraneous tiny dust impurity infiltrates in the bearing, improves the sealing effect of bearing.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

1. bearing outer rings, 2. bearing inner races, 3. retainers, 4. rolling elements, 5. seal rings, 51. Sealings, 52. skeletons, 6. dust covers, 61. dustproof steel plate 62. sealing lips 621. protruding circle 7. cavitys 8. greases among the figure.

Embodiment

A kind of doubling sealed bearing as shown in Figure 1, has bearing outer ring 1, bearing inner race 2, retainer 3, rolling element 4, seal ring 5, dust cover 6, dust cover 6 is positioned at the outside of seal ring 5, plays certain protective action, seal ring 5 has rubber seal 51 and skeleton 52, the interior week of rubber seal 51 contacts with the outer surface of bearing inner race 2, the embedded internal surface that is fixed on bearing outer ring 1 in the outer ring of seal ring 5, and dust cover 6 has dustproof steel plate 61, dust cover 6 is fixed on the outer surface of bearing inner race 2, be coated with sealing lip 62 in dustproof steel plate 61 inboards, a protruding circle 621 is arranged on sealing lip 62, the skeleton 52 outer side contacts of protruding circle 621 and seal ring 5, seal ring 5, dust cover 6 and bearing inner race 2 outer surfaces form the cavity 7 of annular, fill full grease 8 in cavity 7.Bearing in use, dust cover 6 has the oil of throwing and safeguard function, the sealing lip 62 and the cavity 7 of filling full grease 8 can stop effectively that extraneous tiny dust impurity infiltrates in the bearing on the dust cover 6, add the sealability of seal ring 5, have improved the sealing effect of bearing greatly.

Claims

1. doubling sealed bearing, has bearing outer ring (1), bearing inner race (2), retainer (3), rolling element (4), seal ring (5), dust cover (6), dust cover (6) is positioned at the outside of seal ring (5), described seal ring (5) has Sealing (51) and skeleton (52), the interior week of Sealing (51), the outer surface with bearing inner race (2) contacted, the embedded internal surface that is fixed on bearing outer ring (1) in the outer ring of seal ring (5), described dust cover (6) has dustproof steel plate (61), and dust cover (6) is fixed on the outer surface of bearing inner race (2), it is characterized in that: described dustproof steel plate (61) inboard is coated with sealing lip (62), one protruding circle (621) is arranged on the described sealing lip (62), the outer side contacts of skeleton (52) of described protruding circle (621) and seal ring (5), seal ring (5), dust cover (6) and bearing inner race (2) outer surface form the cavity (7) of annular, and the interior filling of described cavity (7) completely has sealing material.

2. a kind of doubling sealed bearing according to claim 1 is characterized in that: the sealing material of filling in the described cavity (7) is grease (8).