DE4204065C2 - Rolling bearing with sealing rings - Google Patents

Description

The invention relates to a roller bearing with tapered roller bearings for rollers, in particular in particular the vertical rolls of a universal roll stand with which the bearing (s) sealing sealing rings, which are arranged on the bearing outer ring.

A tapered roller bearing of this type has become known from DE-OS 14 25 177. It is a common bearing design, in which the inner ring ge is protruding from the outer ring.

The seals used in such roller bearings are intended to prevent penetration prevent coolant, mill scale and other contaminants, others on the other hand, also hold back the lubricant. For example, fulfill this purpose. Radial shaft sealing rings, which often have other seals or - you measures can be combined, such as with sleeve seals or Injection grooves in the outer surface of a leaking labyrinth part. The distance between the bearing and the roll barrel is usually very small due to the design, such as due to the tight construction of vertical rolls of a universal Roll stand, or it is kept very small so that the bending stress of the Roll neck does not become too high, as with horizontal rolls of the roll stand. There is then little space available for the sealing, so that the seal must be arranged radially or housed.

Sealing arrangements are therefore required for the vertical rolls of universal roll stands known in which a sealing ring on a separate, radially between  integrated on the roller barrel and the outer ring of the rolling bearing is ordered. This, however, was accepted as appropriate the thickness of the race, the twist-off dimension of the roll bale and thus the stand time of vertical rolling reduced.

The invention is based, for a rolling bearing of the task To create a sealing ring arrangement that no additional, especially the Ab Dimension of rotation and / or space reducing the width of the roll bale.

This object is achieved in that the outer ring to is extended at the end with the inner ring running in one plane and the you tion ring is arranged on the extension. In contrast to those in universal Roll stands for the vertical rolls tapered roller bearings previously used speaks the extension that corresponds at least to the width of the sealing ring and is about 20 mm, not even an additional space in the axial direction, i. H. between the bearing and the roll barrel, because with the commercially available Ke the inner ring is cantilevered from the outer ring anyway educated. A radial intermediate ring is no longer required and that for The construction height that is otherwise required is therefore fully available as an additional calibration dimension available to the rolled bales.  

If the extension is touched on the outside, one can be moved around ongoing assembly that simplifies the assembly of the sealing ring reach chamfer.

The invention is described below with reference to a drawing illustrated embodiment of the described. It demonstrate:

Fig. 1 shows a frame cage of a universal rolling stand with the horizontal and vertical roller sets, partially cut, seen in the rolling direction, and

Fig. 2 is a detail and enlarged a symmetry half of a vertical rolling bearing of the universal roll set of FIG. 1.

A universal roll set 1 of a universal roll stand, not shown, has bearing chocks 2 for the upper and lower horizontal rolls 3 and bearing chocks 4 for the vertical rolls 5 . The bearing elements 2 of the upper horizontal roll 3 can be guided vertically between boundary walls 6, which are common sam connected by means of a yoke 7 to a frame cage 8 of the cast by means of a to which the boundary walls 6 connecting yoke 7 carrying lug 9 can be lifted by a hoist and lowered ,

As can be seen from FIG. 2, the vertical rollers 5 consist of a roller bale 11 which is supported by a roller bearing 12 formed as a tapered roller bearing on a support axle 13 which is arranged with its axle ends in the chocks 4 . The outer ring 15 of the rolling bearing 12 has on its outside, that is, in the installed position of the vertical roller 5 upwards or downwards, the side has an extension 16 which extends axially so far that it faces the end face in approximately one plane with the inner ring 17 of the rolling bearing 12 extends.

On the extension 16 , a sealing ring 18 is arranged, which only fills the already existing free space and, in particular, does not take up any radial space, so that the Walzenbal len 11 is mounted directly on the outer ring 15 of the rolling bearing 12 , which is equivalent to a gain that increases the twist-off diameter the vertical roller 5 . To make it easier to pull the sealing ring 18 onto the roller bearing 12 , the extension 16 is provided on the outside with a circumferential mounting chamfer 19 .

LIST OF REFERENCE NUMBERS

1

Universal roller set

2

chock

3

horizontal roll

4

chock

5

vertical roller

6

boundary wall

7

yoke

8th

frame cage

9

lifting eye

10

11

roll barrel

12

roller bearing

13

carrying axle

14

axle end

15

outer ring

16

renewal

17

inner ring

18

seal

19

Montagefase

Claims (3)

1. Rolling bearing with tapered roller bearings for rolls, in particular the vertical rolls of a universal roll stand, with the bearing sealing sealing rings, which are arranged on the bearing outer ring, characterized in that the outer ring ( 15 ) to the end face with the inner ring ( 17 ) is extended in one plane and the sealing ring ( 18 ) is arranged on the extension ( 16 ). 2. Rolling bearing according to claim 1, characterized in that the outer ring ( 15 ) is provided on its side facing outward in the installed position with the extension ( 16 ). 3. Rolling bearing according to claim 1 or 2, characterized in that the extension ( 16 ) is chamfered on the outside.