# US 7,611,150 B2 · Sealing device comprising a two-piece annular body

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- Number: US 7,611,150 B2
- Document ID: US7611150B2
- Status: Granted
- Kind: B2
- Application number: 10/501,708
- Filed: 2003-02-22
- Published: 2005-02-17
- Granted: 2009-11-03
- Earliest claimed: 2002-03-15
- Assignees: SMS Demag AG
- Inventors: Konrad Roeingh; Karl Keller
- Web page: https://patentgrep.com/patent/US7611150B2

## CPC

- B21B 31/078: {Sealing devices (sealings in general F16J15/00)}
- F16C 13/02: Bearings
- F16C 33/74: of sliding-contact bearings
- F16C 2322/12: Rolling apparatus, e.g. rolling stands, rolls
- B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

Disclosed is a sealing device (16) for a rotatably mounted roll (15). Said sealing device (16) comprises at least one annular body which sits on a roll neck (2), encompasses said roll neck (2), and is provided with at least one outward-extending lip (21) that rests in a sealing manner against a stationary part (7) during rotation of the roll. Said ring body is embodied in at least two pieces (17; 18), one first piece (17) resting against one part (2) of the roll (15) and one second piece (18) encompassing at least one outward-extending lip (21, 22).

## Claims

### Claim 1

Sealing device (16) for a rotatably supported roll (15), the sealing device comprising at least one annular body, which is supported on a roll neck (2) and encompassing said roll neck, the annular body being provided with at least one outwardly extending lip (21; 22) that rests against and seals a stationary part (7) during rotation of the roll, wherein the annular body comprises at least two parts (17; 18), wherein a first part (17) rests against a part (2) of the roll (15), and a second part (18) comprises the at least one outwardly extending lip (21; 22), and wherein the second part (18) is held in a pocket of the first part (17), wherein the at least one lip is spring-supported.

### Claim 2 (depends on 1)

Sealing device in accordance with claim 1, wherein the first part (17) and the second part (18) have different moduli of elasticity.

### Claim 3 (depends on 1)

Sealing device in accordance with claim 1, wherein the first part (17) and the second part (18) have different surface hardness values.

### Claim 4 (depends on 1)

Sealing device in accordance with claim 1, wherein the first part (17) and the second part (18) consist of different materials.

### Claim 5 (depends on 1)

Sealing device in accordance with claim 1, wherein the second part (18) comprises at least one lip (21) directed axially in the direction of the barrel of the roll (15) and one lip (22) directed axially in the opposite direction.

### Claim 6 (depends on 5)

Sealing device in accordance with claim 5, wherein the lip or lips (21; 22) consist of an elastic rubber material.

### Claim 7

Rolling device with at least one roll (15) rotatably supported in a stand and with at least one sealing device that seals the roll against a stationary area (7) of the rolling device, wherein the sealing device (16) comprises at least one annular body supported on a roll neck (2) and encompassing said roll neck, the annular body being provided with at least one outwardly extending lip (21; 22) that rests against and seals a stationary part (7) during rotation of the roll, wherein the annular body comprises at least two parts (17; 18), wherein a first part (17) rests against a part (2) of the roll (15), and a second part (18) comprises the at least one outwardly extending lip (21; 22), and wherein the second part (18) is held in a pocket of the first part (17) ), wherein the at least one lip is spring-supported.