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Sealed Cylindrical Roller Bearings for Railways
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A cylindrical roller bearing, sealed technology, applied in the field of bearings, can solve problems such as poor sealing effect, achieve the effect of prolonging life and preventing lubricant leakage
Active Publication Date: 2021-09-21
SCHAEFFLER TECH AG & CO KG
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Problems solved by technology
[0005] The problem to be solved by the present invention is: when the axial displacement of the outer ring of the existing sealed cylindrical roller bearing for railway is large, the sealing effect is not good
Method used
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no. 1 example
[0033] like Figure 4 As shown, the railway sealing cylindrical roller bearings include:
[0034] Both ends in the axial direction are provided with the inner ring 10 of the baffle 11;
[0035] The outer ring 20 is provided outside the inner ring 10, and the outer cavity G is formed between the outer ring 20 and the inner ring 10;
[0036] The roller 30 in the axial direction 10 is located in the inner ring 10 in the inner cavity g and the outer ring 10 can be moved relative to the outer ring 10;
[0037] The holder 40 located within the inner cavity G is used to separate the plurality of roller 30 along the circumferential direction;
[0038] The annular first sealing 50 fixed to the outer ring 20;
[0039] The annular second sealing 60, the first sealing cover 50, and the second sealing cover 60 in the baffling 11 seal the inner cavity G at the end of the inner cavity G.
[0040] In the present embodiment, the first sealing 50 includes: extending to the bearing axial direction an...
no. 2 example
[0060] The difference between the second embodiment and the first embodiment is that the relative positional relationship between the free wall of the first sealed cover and the second side wall of the second sealing cover is in the radial direction.
[0061] In the first embodiment, reference Figure 4 As shown, the second side wall 63 of the second sealing cover 60 is always located in the radial direction of the free wall 53 of the first sealing cover 50; and in the second embodiment, reference Figure 7 As shown, the second side wall 63 of the second sealing cover 60 is always located radially outside of the free wall 53 of the first sealing 50.
[0062] In a technical solution of the second embodiment, the free wall 53 of the first sealing cover 50 is always movable in the annular groove 61 of the second sealing cover 60 relative to the inner ring 10, and the first sealing cover 50 is always movable. The first sealing 50 and the second sealing cover 60 always have a positive pa...
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Abstract
A sealed cylindrical roller bearing for railways, comprising: an inner ring with ribs at both ends along the axial direction; an outer ring arranged outside the inner ring, and a Inner cavity; a roller located in the inner cavity and capable of moving axially with the outer ring relative to the inner ring; an annular first sealing cover fixed on the outer ring; fixed on the The ring-shaped second sealing cover on the rib, the first sealing cover and the second sealing cover seal the inner cavity on both sides in the axial direction of the inner cavity, and when the outer ring moves axially relative to the inner ring, the The first sealing cover and the second sealing cover always have a facing area along the radial direction and there is a radial gap. The invention solves the problem of poor sealing effect when the axial displacement of the outer ring of the existing sealed cylindrical roller bearing for railway is large.
Description
Technical field [0001] The present invention relates to the field of bearing, and more particularly to a railroad sealing cylindrical roller bearing (Cylindricalroller Bearing, referred to as CRB). Background technique [0002] like figure 1 As shown, the existing railway sealing cylindrical roller bearings include: an inner ring 1 of the baffling 1a in both ends of the axial direction; a outer ring 2 is outside the inner ring 1; located in the inner ring 1 and outside Two column rollers 3 between the laps 2, the cylindrical roller 3 can move along the outer ring 1 along the outer ring 2, and the outer ring 2 is located in the middle position, each column roller 3 and the adjacent bearing There is an axial gap S between 1A; for sealing the bearing, the annular sealing cover 4 that prevents the lubricant from leaking from the inside of the bearing, one periphery of the annular sealing cover 4 is fixed to the outer ring 2, and the other is located in the bail 1a. There is a radial ...
Claims
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Application Information
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