CN211117132U - Novel four-row tapered roller bearing with basket-shaped frame non-standard inner diameter 304.902 - Google Patents

Abstract

A novel four-row tapered roller bearing with a basket-shaped frame non-standard inner diameter 304.902 comprises two single-row outer rings, a double-row outer ring and two double-row inner rings, wherein an inner spacer ring is arranged between the two inner rings, two outer spacer rings are arranged between the outer rings, a plurality of rollers are arranged between the inner rings and the outer rings, and a basket-shaped retainer is arranged. In order to solve the problems of large impact load, high rotating speed, short service life of the bearing, long roller changing consumption time and the like of the existing bearing, the original rolling bearing limit design method of a company is adopted to provide the values of the external dimension and the structural elements of a model bearing. The requirements of users on the long service life of the bearing and the reduction of the use cost are met. Belongs to a large bearing. It is used as special bearing for supporting roller and working roller in steel and non-ferrous metallurgy industry.

Description

Novel four-row tapered roller bearing with basket-shaped frame non-standard inner diameter 304.902

The technical field is as follows: a four-row tapered roller bearing belongs to a large bearing. The bearing is mainly used as a special bearing for a supporting roller and a working roller on a rolling mill in the steel and nonferrous metallurgy industries. Belongs to engineering element bearings (F16C) and metal rolling (B21B).

(II) background technology:

the existing four-row tapered roller bearing used for mounting a rolling mill supporting roller or a working roller in the steel and nonferrous metallurgy industries has the defects of severe working condition, high rotating speed, large load bearing and large impact force. It takes time to change the rolls. In order to reduce the use cost, users require long service life of the bearing.

The chinese utility model patent in 2017 discloses four-piece "basket-shaped frame non-standard inner diameter's novel four-row tapered roller bearing" (Z L201720760393.5) (Z L201720759606.2) (Z L201720760892.4) (Z L201720760243.4), and although four types of basket-shaped frame four-row tapered roller bearings are disclosed, the requirement of more basket-shaped frame four-row tapered roller bearings for long life is still not satisfied.

(III) the invention content: the utility model provides a non-standard internal diameter 304.902's of basket shape frame novel four-row tapered roller bearing, its purpose just provides long-life four-row tapered roller bearing for the user. Provides the overall dimension and the structural element value of the four-row tapered roller bearing with a new type.

The utility model is used for bearing model 3806/304.902, (38 is four-row tapered roller bearing promptly, and 06 is unidimensional series code, and 304.902 is the bearing internal diameter the utility model provides a technical scheme is a nonstandard new design of this bearing model.

The novel four-row tapered roller bearing with the basket-shaped frame non-standard inner diameter 304.902 is provided with two single-row outer rings 1, a two-row outer ring 6 and two-row inner rings 4, wherein an inner spacer ring 5 is arranged between the two double-row inner rings, two outer spacer rings 2 are arranged between the single-row outer rings and the two-row outer rings, a plurality of rollers 3 are arranged between the inner rings and the outer rings and are supported by a basket-shaped retainer 7, and the novel four-row tapered roller bearing is characterized in that the value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing outer ring assembly width T, the bearing inner ring assembly width B, the bearing roller diameter Dw, the roller length L, the roller number Z and the roller half-cone angle psi of the model bearing are:

TABLE 1

In order to obtain the best effect of the four-row tapered roller bearing, the values of the bearing inner diameter D, the bearing outer ring component width T, the bearing inner ring component width B, the bearing roller diameter Dw, the roller length L, the roller number Z and the roller half cone angle psi of the bearing of one type in table 1 are respectively the numerical values of the number 1 in table 2.

TABLE 2

The utility model discloses beneficial effect: this novel four-row tapered roller bearing adopts the original "antifriction bearing limit design method" design of company, has confirmed the structural element numerical value of above-mentioned type four-row tapered roller bearing, and this design has realized satisfying under design strength and the technological process requirement condition, and the rolling element diameter of design is the biggest, and length is the longest, and the rated dynamic load value of bearing is the highest, and the calculation life-span of bearing is the longest, has satisfied user's long-life requirement, has reduced user's use cost.

(IV) description of the drawings

FIG. 1 is a front cross-sectional view of a new four row tapered roller bearing with a non-standard inner diameter 304.902 of the basket cage.

Figure 2 roller 3 shape view (for basket shape retainer 7)

(V) detailed description of the preferred embodiments

See table 2 for a new four row tapered roller bearing with a basket non-standard inner diameter 304.902 of number 1.

Referring to FIG. 1, the bearing comprises two single-row outer rings 1, one double-row outer ring 6 and two double-row inner rings 4, an inner spacer ring 5 is arranged between the two double-row inner rings, and two outer spacer rings 2 are arranged between the single-row outer rings and the double-row outer rings, wherein the cage adopts a basket-shaped cage 7, referring to the serial number 1 in Table 2 and FIG. 1, the external dimensions of the bearing are that the inner diameter D of the bearing is 304.902mm, the outer diameter D of the bearing is 412.648mm, the width T of the bearing outer ring assembly and the width B of the bearing inner ring assembly are 266.7mm, the structural elements of the four-row tapered roller bearing determined by a rolling bearing limit design method are as shown in Table 2 and FIG. 2, the diameter Dw of the roller is 30.928mm, the length of the roller is L mm, the number Z of the rollers per row in.

Claims (2)

1. The novel four-row tapered roller bearing with the non-standard inner diameter 304.902 of the basket frame is provided with two single-row outer rings (1), one double-row outer ring (6) and two double-row inner rings (4), an inner spacer ring (5) is arranged between the two double-row inner rings, two outer spacer rings (2) are arranged between the single-row outer rings and the double-row outer rings, a plurality of rollers (3) are arranged between the inner rings and the outer rings and supported by a basket-shaped retainer (7), and the novel four-row tapered roller bearing is characterized in that the value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing outer ring assembly width T, the bearing inner ring assembly width B, the bearing roller diameter Dw, the roller length L, the number Z of rollers in each row and the roller half-cone angle psi.

TABLE 1

2. The new type four row tapered roller bearing of the non-standard inner diameter 304.902 of the basket-shaped frame as defined in claim 1, wherein the inner diameter D, the outer diameter D, the outer ring assembly width T, the inner ring assembly width B, the diameter Dw, the length L, the number Z of rollers per row and the half cone angle psi of the rollers of said one type of bearing are the values as shown in Table 2.

TABLE 2

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