CN2048914U

CN2048914U - Roller bearing with four array cylinder used in roll

Info

Publication number: CN2048914U
Application number: CN 88207459
Authority: CN
Inventors: 张国福; 程宝升; 尹焕臣
Original assignee: Wafangdian Bearing Factory No1 Liaoning Prov
Current assignee: Wafangdian Bearing Factory No1 Liaoning Prov
Priority date: 1988-06-20
Filing date: 1988-06-20
Publication date: 1989-12-06

Abstract

The utility model discloses a roller bearing with four-array cylinder, and is particularly suitable for matching with rolls. The roller bearing with four array cylinder is mainly comprises an inner ring, two outer rings, two holders and four-array cylinder rollers. The roller bearing with four-array cylinder used in roll is characterized in that two annular loose ribs are arranged on both ends of the inner ring; due to the adoption of the structure, the utility model simultaneously bears the radial load and the axial load, or positions in axial direction. The utility model matches with a four-point angle contact ball bearing by replacing the present bearing with four-array cylinder, the shaft journal of the roller is shortened, and the volume of a shaft box is reduced. The utility model has the advantages of low cost, high production efficiency, simple structure, convenient assembly and disassembly and long service life.

Description

Roller bearing with four array cylinder used in roll

The utility model relates to a kind of multiple row roller can bear the bearings with rolling contact of radial and axial load, and it is supporting to be specially adapted to milling train.

At present, on the domestic medium and small milling train, except also adopting relatively backward bakelite tile or selfaligning roller bearing roll bearing as milling train, general four-line column roller bearing and 4 angular contact ball bearings of adopting are used, bear radial load by roller bearing, 4 angular contact ball bearings then bear thrust load and the axially locating of making both direction, owing to adopt two types bearing to be used, make the roll pins having lengthening, the volume of bearing housing strengthens, improve the cost of milling train, and prepared to have brought difficulty for frequent dismounting, maintenance and spare part.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of roller bearing that radial load can bear thrust load that can bear is provided, and simple in structure, has reduced the cost of milling train.

Technical solution of the present utility model is: a kind of four-row cylindrical roller bearing for rolling mill, outer ring with an inner ring, two two ribs of band, can isolate the retainer of biserial roller and be held the four-row cylindrical roller that frame is evenly isolated for two, its special way is that the two ends of inner ring have the annular flat back-up ring, the loose rib of one end and inner ring are one, and the other end then is separable annulus.

Owing to adopted this special structure, reached the usefulness of bearing radial and axial load simultaneously, with replacement four-line column roller bearing and being used of 4 angular contact ball bearings, can shorten roll pins having, reduce the bearing housing volume, reduce the milling train cost, enhance productivity, provide convenience for maintenance and technology roll change, and have characteristics such as simple in structure, long service life.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the loose rib schematic representation.

Be described in further detail below in conjunction with embodiment:

As Fig. 1 shown in Figure 2 be to be used for the supporting bearing of 650 milling trains, on two retainers (3) between two outer rings (2) and the inner ring (5), evenly isolating four-row cylindrical roller (4), the back-up ring (6) of the oriented outer lug of inner ring one end of hollow cylinder, the other end has the annular flat back-up ring (1) of a separation.

When being used with milling train, outer ring, roller, retainer are designed to an assembly and bearing housing is fitted together as fixing-assembly, inner ring and loose rib then are separation member, owing to adopt a kind of bearing, saved the trouble of 4 angular contact ball bearings of dismounting, when the maintenance roll surface, need not pull down bearing, only loose rib is taken off, inner ring is separated with outer assembly get final product, can shorten dismounting engineering time, prolong roll working life.

When milling train is in the working procedure, axial force is produced by mutual dislocation between the roller groove, because the axial constraint of the bearing housing and the shaft shoulder, axial force passes to inner ring loose rib (1) by the shaft shoulder, reach outer ring (2) centre rib through roller end face, again through another outer ring centre rib and roller end face, reach at last on the loose rib (6) of the inner ring the other end, under normal lubricating condition, very thin and the oil film energy bearing load of one deck is arranged between roller (4) end face and the lasso rib, thereby formed best Frotteurism, can guarantee to bear the bearing proper functioning of axial force.

Claims

1, a kind of four-row cylindrical roller bearing for rolling mill, has an inner ring, the outer ring on two band folk art term limits can isolate the retainer of biserial roller and be held the four-row cylindrical roller that frame is evenly isolated, it is characterized in that the two ends of inner ring have annular flat back-up ring (1), (6) for two.