CN211117127U

CN211117127U - Novel four-row tapered roller bearing with basket-shaped frame non-standard inner diameter 244.475

Info

Publication number: CN211117127U
Application number: CN201921020141.4U
Authority: CN
Inventors: 文宇; 刘小辉; 钟飞; 张福洪
Original assignee: Chengdu Kehua Heavy Bearing Co ltd
Current assignee: Chengdu Kehua Jincheng Precision Machinery Manufacturing Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-07-28
Anticipated expiration: 2029-07-02

Abstract

A novel four-row tapered roller bearing with a basket-shaped frame non-standard inner diameter 244.475 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 244.475

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 244.475'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 3806/244.475, (38 is four-row tapered roller bearing promptly, and 06 is unidimensional series code, and 244.475 is the bearing internal diameter the utility model provides a technical scheme is a nonstandard new design of this bearing model.

The technical scheme is as follows:

the novel four-row tapered roller bearing with the basket-shaped frame non-standard inner diameter 244.475 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 244.475 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-shaped frame non-standard inner diameter 244.475 of number 1 in table 2, see fig. 1, having two single-row outer rings 1, one double-row outer ring 6, two double-row inner rings 4, an inner spacer ring 5 between the two double-row inner rings, and two outer spacer rings 2 between the single-row outer rings and the double-row outer rings, where the cage is a basket-shaped cage 7, see number 1 in table 2 and fig. 1, the outer dimensions of the bearing are such that the inner diameter D of the bearing is 244.475mm, the outer diameter D of the bearing is 327.025mm, the outer ring assembly width T of the bearing and the inner ring assembly width B of the bearing are 193.675mm, and the structural elements of the four-row tapered roller bearing determined by the rolling bearing limit design method are as shown in table 2 and fig. 2, the roller diameter Dw is 24.406mm, the roller length L is 32.5mm, the number Z of rollers per row in the.

Claims

1. The novel four-row tapered roller bearing with the basket-shaped frame non-standard inner diameter 244.475 is provided with two single-row outer rings (1), a two-row outer ring (6) and two-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 two-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 four-row tapered roller bearing is characterized in that 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 range of the half cone angle psi of:

TABLE 1

2. The new type of four-row tapered roller bearing with the basket-shaped frame non-standard inner diameter 244.475 as claimed in claim 1, wherein the bearing inner diameter D, the bearing outer 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 number of rollers per row Z and the roller half cone angle psi of the bearing are the values as shown in Table 2:

TABLE 2