CN2267346Y

CN2267346Y - Sealing ring of rolling mill

Info

Publication number: CN2267346Y
Application number: CN 95201489
Authority: CN
Inventors: 苏玉达; 张进
Original assignee: BEIJING MILL BEARING Co
Current assignee: BEIJING MILL BEARING Co
Priority date: 1995-02-25
Filing date: 1995-02-25
Publication date: 1997-11-12
Anticipated expiration: 2005-02-25

Abstract

The utility model relates to a sealing ring for rolling mill bearing, comprising an annular main body and an annular lip which is extended out from one side of the main body. The sealing ring is characterized in that the section of the annular main body (1) is in the shape of a trapezoid, and the height of the section is (h); the section thickness (a) of the extending end part of the annular lip (2) which is extended out from one side of the main body (1) is slightly smaller than the section thickness (b) of the jointing end part of the annular lip (2), and the jointing end is provided with a round corner radius (r). The sealing ring has the good performances of a water sealing, dust sealing and oxidation sheet iron sealing. When new lubricating grease is pumped into a bearing seat, old lubricating grease can overflow from the lip, the assembly and disassembly are very convenient, and the service life of an original rolling mill bearing can be prolonged.

Description

The roller-mill bearing seal ring

The utility model relates to a kind of seal ring, refers to a kind of bearing rubber seal ring that is used for milling train especially.

Roller-mill bearing is installed on the rolling-mill roller two ends, and the working site has a large amount of water and scale to divide to corrode bearing, so bearing seal has effect of the utmost importance working life to prolonging bearing.

What the existing bearing sealing technique adopted is mazy type, and labyrinth and O shape rubber ring convolution, labyrinth and nitrile butadiene rubber loops are box-like.Anti-oxidation skin of waterproof and dust also have the shortcoming that is difficult for installation effectively, greatly reduce bearing life, even bearing is damaged in the operation of rolling, have a strong impact on user's working efficiency.Fig. 1 is the original labyrinth-type excluder in Beijing Bearings Factory.Figure 2 shows that the Japanese product sample CATNO214 of Koyo Seiko Co., Ltd bearing assembling (the 162nd page).

The purpose of this utility model promptly is to solve the anti-oxidation skin of waterproof effectively and dust and the difficult problem of installing that above-mentioned prior art exists, even reduce greatly bearing working life, the shortcoming that bearing is damaged in the operation of rolling, and a kind of roller-mill bearing seal ring is provided.

The purpose of this utility model reaches by the following technical programs:

A kind of roller-mill bearing seal ring, comprise the main body of ring-type and by main body one skew back to the ring-type lip that stretches out, it is characterized in that the section of the main body (1) of ring-type is trapezoidal, it highly is (h); By main body (1) one skew back to the ring-type lip (2) that stretches out stretch out end section thickness (a) than smaller in conjunction with end section thickness (b), and have a fillet radius (r) at joint end.

The utlity model has following advantage and effect:

Lubricating grease is when pumping in one, the bearing support, old fat can be overflowed by the lip place, and extraneous water, iron scale, dust etc. can not enter: two, owing to be that axial seal roll neck splits out very convenient from bearing, be easy to mill roll, and make former rolling mill bearing life bring up to 2000 hours by average 1500 hours.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the original labyrinth-type excluder in Beijing Bearings Factory.

Fig. 2 is a Japanese Koyo Seiko Co., Ltd product sample.

Fig. 3 is the installation diagram of roller-mill bearing seal ring of the present utility model.

Fig. 4 is the structural drawing of roller-mill bearing seal ring of the present utility model.

The front is described further in conjunction with the accompanying drawings and embodiments:

See also Fig. 3 and Fig. 4, this roller-mill bearing seal ring adopts the nitrile butadiene rubber manufacturing, rubber ring main body 1 is a trapezium structure, rely on elasticity to be anchored on the roll rotation labyrinth, cushion rubber has a lip 2 at circumferencial direction, leans against fixedly on the labyrinth end face p, when roll rotation, lip 2 contacts rotation with fixing labyrinth end face p, plays seal action.

The size of this product is stretched out end section thickness a=1.5～2.5mm, in conjunction with end section thickness b=2～3mm, fillet radius r=0.7～2mm, optimum size a=2mm, b=2.5mm, r=1mm.Depth of section h=9～14mm, total thickness L=15～24mm.Can form the complete RBR series seal ring of internal diameter from 90mm to 500mm like this, have various sizes to be fit to the needs of all specification rolls.

Claims

1, a kind of roller-mill bearing seal ring comprises the main body of ring-type and the ring-type lip that is stretched out by main body one side, it is characterized in that the section of the main body (1) of ring-type is trapezoidal, and it highly is (h); The ring-type lip (2) that stretches out by main body (1) one side stretch out end section width (a) than smaller in conjunction with end section width (b), and have a fillet radius (r) at joint end.

2, roller-mill bearing seal ring according to claim 1 is characterized in that: it is 1.5～2.5mm that lip (2) stretches out end section thickness (a), and it is 2～3mm in conjunction with end section thickness (b); Fillet radius (r) is 0.7～2mm.

3, roller-mill bearing seal ring according to claim 1 and 2 is characterized in that: thickness (a) is 2mm, and thickness (b) is 2.5mm, and fillet radius (r) is 1mm.

4, roller-mill bearing seal ring according to claim 1 is characterized in that: main body (1) depth of section (h) is 9～14mm, and total thickness (L) is 15～24mm, and internal diameter (d) is 90～500mm.