US 12,650,148 B2Granted

Hub bearing unit

AssigneesAktiebolaget Skf, SKF Argentina S.A., SKF do Brasil Ltda

InventorsMarcelo Borges Da Silva, Giorgia D'Amico, Diego Toso

Life of this patent

Estimating the term…

Loading patent…

Abstract

A hub bearing unit includes a hub, a bearing unit having an internal seat, an outer ring connected to the internal seat, a inner ring, and a sealing device between the inner and outer rings. The sealing device includes a first shield mounted to the inner ring, a second shield mounted to the outer ring, and an elastomeric seal body on the second metallic shield. The hub has a radially inwardly extending shoulder delimiting the internal seat and located axially outward of the first shield, and a path extends from outside the hub to the gap. The path includes a first portion defined by an axially inwardly facing surface of the shoulder and an axially outwardly facing surface of the shield and a second path portion between a radially outer edge of the shield and a radially inwardly facing cylindrical surface of the elastomeric seal body.

Claims14

Dependent claims

A hub bearing unit comprising:

a hub having a cylindrical internal seat,
a bearing unit including a rotatable outer ring connected to the internal seat and a stationary inner ring inside the outer ring, and
a sealing device at least partly located in a gap between the outer ring and the inner ring,
wherein the sealing device comprises:
a first shield mounted to a radially outer cylindrical surface of the radially inner ring,
a second shield mounted by on a radially inner cylindrical surface of the radially outer ring, and
at least one elastomeric seal body on at least a portion of the second shield,
wherein the hub includes a radially inwardly extending shoulder formed as one piece with the hub, the shoulder having a first annular surface facing the first shield and having a second annular surface, the second annular surface being in axial contact with an axially outer surface of the outer ring and the first annular surface being located radially inward of the second annular surface and axially offset from the second annular surface in a direction away from the sealing device,
wherein a path extends from outside of the hub to the gap, and
wherein the path includes a first path portion defined by the first annular surface of the shoulder and an axially outwardly facing surface of the first shield and a second path portion extending from the first path portion and between a radially outer edge of the first shield and a radially inwardly facing cylindrical surface of the at least one elastomeric seal body.

7 more elements

A hub bearing unit comprising:

a hub having a cylindrical internal seat,
a bearing unit including a rotatable outer ring connected to the internal seat and a stationary inner ring inside the outer ring, and
a sealing device at least partly located in a gap between the outer ring and the inner ring,
wherein the sealing device comprises:
a first shield mounted to a radially outer cylindrical surface of the radially inner ring,
a second shield mounted by on a radially inner cylindrical surface of the radially outer ring, and
at least one elastomeric seal body on at least a portion of the second shield,
wherein the hub includes a radially inwardly extending shoulder axially delimiting the internal seat and located axially outward of the first shield,
wherein a path extends from outside of the hub to the gap,
wherein the path includes a first path portion defined by a first axially inwardly facing surface of the shoulder and an axially outwardly facing surface of the first shield and a second path portion extending from the first path portion and between a radially outer edge of the first shield and a radially inwardly facing cylindrical surface of the at least one elastomeric seal body,
wherein an axially outer annular surface of the radially outer ring abuts against a second axially inwardly facing surface of the shoulder, the second axially inwardly facing surface being located radially outward from the first axially inwardly facing surface and axially inward from the first axially inwardly facing surface,
wherein an axially outer annular surface of the radially inner ring and the second axially inwardly facing surface lie in a common plane,
wherein the first shield includes a cylindrical portion and an annular portion extending radially outwardly from the cylindrical portion,
wherein the at least one elastomeric body includes at least one seal lip in contact with the cylindrical portion of the first shield and at least one seal lip in contact with the annular portion of the first shield, and
wherein the shoulder and the hub are formed as one piece.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/635,175Filed 15 Apr 2024
Priority: IT 10202300000771020 Apr 2023
Published: US 2024/0352975 A124 Oct 2024
Granted: 9 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16C 33/7863
With a further sealing element: mounted to the inner race, e.g. a flinger to use centrifugal effect
F16C 19/08
For radial load mainly: with two or more rows of balls
F16C 33/7866
With a further sealing element: with sealing lips
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…