CN202539192U - Double-row ball thrust bearing for roll of rolling mill - Google Patents

Abstract

The utility model relates to a double-row ball thrust bearing for a roll of a rolling mill. The bearing consists of two outer rings, four inner rings, retainers, steel balls, a space ring and a bush; the four inner rings and the two outer rings are supported by the retainers; when the bearing bears axial force in two directions, the two rows of steel balls which are rolling bodies can be stressed simultaneously, the axial load bearing ability of the bearing is quite high and is two times of that of a four-point contact ball bearing and is also higher than the axial load bearing ability of a double-row angular contact bearing, and the double-row ball thrust bearing for the roll of the rolling mill can work under heavy load at high speed. Besides, the double-row ball thrust bearing for the roll of the rolling mill is convenient to install and detach and long in service life, brings great convenience for modification and application of the rolling mill, and is perfect.

Description

A kind of rolling mill is with the double ball thrust bearing of roll

Technical field

The utility model belongs to the milling train field that is used for rolling metal strip, relates to a kind of roll rolling bearing that is used for rolling mill, and especially a kind of rolling mill is with the double ball thrust bearing of roll.

Background technology

Present stage, the rolling-mill roller rolling bearing has replaced the bakelite tile supporting, makes rolling speed and precision that large increase all arranged; But, roll also has a very big problem after adopting rolling bearing; Be exactly the thrust bearing neither one version preferably also of roll, such as: double-row angular contact bal bearing, this class bearing have two row rolling elements; Width is bigger; Suit under the medium axial load condition of high speed, to work, because of its can only one when bearing axial force row stressed, so its ability of bearing axial load is little.Such as double-row conical bearing, such bearing axial load is bigger again, but in use has a lot of shortcomings, and 1. limit speed is low, can not be suitable for high-speed rolling; 2. roller large end face and centre rib are sliding frictions, and when moment, axial force was very big, burn very easily appearred in bearing; 3. such bearing width size is very big, takies very large space of bearing housing, and the volume of bearing housing is increased; 4. not only bearing radial force but also when bearing axial force of this class bearing and since its inner ring can not with roller footpath tight fit, seize, excessively heated axle phenomenon appear when rolling easily, this is the deficiency of existing milling train with thrust bearing.

The utility model content

The purpose of the utility model is to overcome the shortcoming of above-mentioned prior art, is to design a kind of rolling mill with the double ball thrust bearing of roll, in order to improve the rotating speed and the axial carrying capacity of bearing, increases the service life, and overcomes the deficiency of existing milling train with thrust bearing.

The utility model is realized through following technical scheme:

The utility model is made up of outer ring, inner ring, retainer, steel ball, spacer ring, lining.The outer ring has two, and beanstalk is shaped as ring shape.Inner ring has four, and its shape also is a ring shape.The outer ring inwall, interior ring outer wall has the steel ball curved track.Retainer has two, and the shape of retainer is with existing retainer, and retainer entangles steel ball, and steel ball is a spherical, and retainer, steel ball are between outer ring and inner ring.Spacer ring is the annulus bodily form, and spacer ring is one, and spacer ring is positioned between four inner rings.Said lining is an integral type, and lining is a cylindrical shape, and the lining outer right wall has edge of table, and inner ring (2) spacer ring inwall is positioned on the lining, and the lining inwall supplies on roll diameter of roller, to install.

The beneficial effect of the utility model:

The utility model adopts double four-point contact ball, and when bearing bi-directional axial power, two row rolling elements, one steel ball all can be simultaneously stressed; Its ability of bearing axial load is very big, is the twice of four-point contact ball, also is higher than the biserial angular contact bearing; Can under high-speed overload, work, and installation, convenient disassembly, long service life; Very convenient to modifying rolling mill with application, be a kind of desirable thrust bearing of the roll.

Description of drawings

Fig. 1 for rolling mill with the double ball thrust bearing plane of roll.

Among the figure, 1 is that outer ring, 2 is that inner ring, 3 is that retainer, 4 is that steel ball, 5 is that spacer ring, 6 is lining.

The specific embodiment

Specify according to 1 pair of the utility model of accompanying drawing below

As shown in Figure 1, this bearing is made up of outer ring 1, inner ring 2, retainer 3, steel ball 4, spacer ring 5 and lining 6, and outer ring 1 has two, and it is shaped as ring shape.Inner ring 2 has four, and its shape also is a ring shape.Outer ring 1 inwall, inner ring 2 outer walls have the curved track of steel ball 4.Retainer 3 has two, and the shape of retainer 3 is with existing retainer, and retainer 3 entangles steel ball 4.Steel ball 4 is a spherical, and retainer 3, steel ball 4 are between outer ring 1 and inner ring 2.Spacer ring 5 is the annulus bodily form; Spacer ring 5 is one, and corner circle 5 is positioned between four inner rings 2.Lining 6 is one, and lining 6 is a cylindrical shape, and lining 6 outer right wall have edge of table, and inner ring 2, spacer ring 5 inwalls are positioned on the lining 6, and lining 6 inwalls supply on roll diameter of roller, to install.

The bearing of the utility model is the bearing steel product, and retainer 3 also can be copper fitting.

Claims (2)

1. a rolling mill is with the double ball thrust bearing of roll; Be made up of outer ring (1), inner ring (2), retainer (3), steel ball (4), spacer ring (5) and lining (6), it is characterized in that: outer ring (1) has two, and it is shaped as ring shape; Inner ring (2) has four, and its shape also is a ring shape; Outer ring (1) inwall, inner ring (2) outer wall has the curved track of steel ball (4); Retainer (3) has two, and retainer (3) entangles steel ball (4); Steel ball (4) is a spherical, and retainer (3), steel ball (4) are between outer ring (1) and inner ring (2); Spacer ring (5) is the annulus bodily form, and spacer ring (5) is one, and spacer ring (5) is positioned between four inner rings (2).

2. rolling mill according to claim 1 is with the double ball thrust bearing of roll; It is characterized in that; Said lining (6) is an integral type, and lining (6) is a cylindrical shape, and lining (6) outer right wall has edge of table; Inner ring (2) spacer ring (5) inwall is positioned on the lining (6), and lining (6) inwall supplies on roll diameter of roller, to install.

Images