	US 11,933,360 B2
	Seal for large roller bearing
Thomas Altmayer, Gutenzell-Hürbel (DE); and Andreas Palmer, Riedlingen (DE)
Assigned to Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed by Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed on Sep. 17, 2021, as Appl. No. 17/448,029.
Application 17/448,029 is a continuation of application No. PCT/EP2020/057195, filed on Mar. 17, 2020.
Claims priority of application No. 20 2019 101 636.1 (DE), filed on Mar. 21, 2019.
Prior Publication US 2022/0003276 A1, Jan. 6, 2022
Int. Cl. F16C 33/76 (2006.01); F16C 19/08 (2006.01); F16C 33/60 (2006.01)

CPC F16C 33/768 (2013.01) [F16C 19/08 (2013.01); F16C 33/60 (2013.01)]

18 Claims

1. A seal for a large roller bearing for sealing a joint between two adjacent ring segments or ring parts of the roller bearing, wherein the seal comprises:

at least two mutually spaced apart sealing limbs comprising a rubber elastic and/or yielding sealing material for sealing insertion into sealing grooves formed at both sides of the joint in ring segments or ring parts adjacent to one another;

a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic and/or yielding sealing material that spans the joint; and

a desired stretching section in a region of the connection section,

wherein the desired stretching section has a greater elasticity and/or a smaller stretching stiffness than adjacent sealing sections and/or the at least two mutually spaced apart sealing limbs,

wherein the desired stretching section has a stretching fold contoured in a channel shape or in a bead shape, and

wherein the stretching fold is configured to be drawn flat by drawing the at least two mutually spaced apart sealing limbs apart.

10. A seal for a large roller bearing for sealing a joint between two adjacent ring segments or ring parts of the roller bearing, wherein the seal comprises:

at least two mutually spaced apart sealing limbs comprising a rubber elastic for sealing insertion into sealing grooves formed at both sides of the joint in ring segments or ring parts adjacent to one another;

a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic that spans the joint; and

a desired stretching section in a region of the connection section, wherein the desired stretching section has greater elasticity and smaller stretching stiffness than both adjacent portions of the connection section and the at least two mutually spaced apart sealing limbs, and

the desired stretching section has a stretching fold contoured in a channel shape or in a bead shape, and wherein the stretching fold is configured to be drawn flat by drawing the at least two mutually spaced apart sealing limbs apart.

13. A roller bearing in the form of an open centered large roller bearing, comprising:

two roller races rotatable with respect to one another, wherein at least one of the roller races comprises ring segments or ring parts adjacent to one another at a joint; and

a seal for sealing the joint, wherein the seal comprises:

at least two mutually spaced apart sealing limbs comprising a rubber elastic and/or yielding sealing material for sealing insertion into a respective sealing groove at both sides of the joint in ring segments or ring parts adjacent to one another, wherein the respective sealing groove at both sides of the joint is open toward the outer side; and

a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic and/or yielding sealing material that spans the joint,

wherein the at least two mutually spaced apart sealing limbs of the seal are sealingly seated in the respective sealing groove at both sides of the joint and with the connection section of the seal spanning the joint.