US 2025/0092916 A1Published application

Bearing seal and its applications

OwnerMeng Zhang, Dapeng Li +2inventors

InventorsMeng Zhang, Dapeng Li, Yangguang Zhao, He Zhu

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Abstract

A bearing seal for a rolling bearing with standard boundary dimensions that comprises a first flinger fitted into a first bearing ring and a second flinger fitted into a second bearing ring. Each flinger further comprises a correspondingly numbered sealing body. A first sealing body engages the second flinger and/or the second bearing ring, and a second sealing body engages the first flinger and/or the first bearing ring. The axial width of the bearing seal varies along the radial direction of the bearing. Starting at the first bearing ring, with a narrow width W, defined relative to the total radial size of the bearing seal L, wherein the ratio W/L is less than or equal to 0.5, the bearing seal widens toward the second bearing ring, thereby providing extra space between the rolling elements and/or cage and the bearing seal adjacent to the first bearing ring.

Claims20

Dependent claims

A bearing seal comprising:

a first flinger configured to be secured to a first shoulder of a first bearing ring on an axial side of a bearing, the first flinger comprising a first axial portion and a first radial portion, and
a second flinger configured to be secured to a second shoulder of a second bearing ring on the axial side of the bearing, the second flinger comprising a second axial portion and a second radial portion, and
a first sealing body formed on the first flinger comprising a first plurality of lips, one lip of the first plurality of lips forming a contact seal with the second flinger,
a second sealing body formed on the second flinger comprising a second plurality of lips, one lip of the second plurality of lips forming a contact seal with the first flinger and another lip of the second plurality of lips forming a non-contact seal with the first flinger, wherein
the first radial portion comprising a first segment and a second segment, the first segment being axially closer to the second radial portion than the second segment, and
wherein the first segment of the first radial portion is located within an axial distance W of the second radial portion, and
wherein a total radial size L of the bearing seal is measured between the first axial portion of the first flinger and the second axial portion of the second flinger.

4 more elements

A bearing seal comprising:

a first flinger configured to be secured to a first shoulder of a first bearing ring on an axial side of a bearing, the first flinger comprising a first axial portion and a first radial portion, and
a second flinger configured to be secured to a second shoulder of a second bearing ring on the axial side of the bearing, the second flinger comprising a second axial portion and a second radial portion, and
a first sealing body formed on the first flinger comprising a first plurality of lips, one lip of the first plurality of lips forming a contact seal with the second flinger and another lip of the first plurality of lips forming a contact seal with the second bearing ring,
a second sealing body formed on the second flinger comprising a second plurality of lips, one lip of the second plurality of lips forming a contact seal with the first flinger and another lip of the second plurality of lips forming a non-contact seal with the first bearing ring, wherein
the first radial portion comprising a first segment and a second segment, the first segment being axially closer to the second radial portion than the second segment, and
wherein the first segment of the first radial portion is located within an axial distance W of the second radial portion, and
wherein a total radial size L of the bearing seal is measured between the first axial portion of the first flinger and the second axial portion of the second flinger.

4 more elements

A bearing seal comprising:

a first flinger configured to be secured to a first shoulder of a first bearing ring on an axial side of a bearing, the first flinger comprising a first axial portion and a first radial portion, and
a second flinger configured to be secured to a second shoulder of a second bearing ring on the axial side of the bearing, the second flinger comprising a second axial portion and a second radial portion, and
a first sealing body formed on the first flinger comprising a first plurality of lips, one lip of the first plurality of lips forming a contact seal with the second bearing ring,
a second sealing body formed on the second flinger comprising a second plurality of lips, one lip of the second plurality of lips forming a contact seal with the first flinger and another lip of the second plurality of lips forming a non-contact seal with the first bearing ring, wherein
the first radial portion comprising a first segment and a second segment, the first segment being axially closer to the second radial portion than the second segment, and
wherein the first segment of the first radial portion is located within an axial distance W of the second radial portion, and
wherein a total radial size L of the bearing seal is measured between the first axial portion of the first flinger and the second axial portion of the second flinger.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/968,237Filed 4 Dec 2024
Priority: CN 202111586981.923 Dec 2021
Published: 20 Mar 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16C 33/766
Retained in the sealing gap: by pumping action
F16C 33/7883
With a further sealing ring: mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped…
F16C 33/782
Details of the sealing or parts thereof, e.g. geometry, material: of the sealing region
F16C 33/7823
Of the sealing region: of sealing lips

Family

Application17/991,372Continuation in part · filed 21 Nov 2022
Application18/968,237Continuation in part
US 12,276,305 B2Related patent
US 2023/0204072 A1Published application
US 2025/0092916 A1This patent

From the US filing history. Foreign family members aren’t listed.

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