CN211117130U

CN211117130U - Novel four-row tapered roller bearing with basket-shaped frame with nonstandard width 272

Info

Publication number: CN211117130U
Application number: CN201921022114.0U
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

The novel four-row tapered roller bearing with the basket-shaped frame with the nonstandard width 272 is provided with 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 with nonstandard width 272

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.

Although the chinese utility model patent "novel four-row tapered roller bearing with basket-shaped frame non-standard width 200" (Z L201720768744.7) discloses a basket-shaped frame four-row tapered roller bearing, it discloses only one type (382040X2-1) and completely fails to satisfy the requirement of long life of more basket-shaped frame four-row tapered roller bearings.

(III) the invention content: the utility model provides a non-standard width 272'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 382952X2 (38 is four-row tapered roller bearing promptly, 29 is size series code, 52 is the 1/5 of bearing internal diameter, and X2 is bearing width nonstandard 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 nonstandard width 272 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 component width T, the bearing inner ring component width B, the bearing roller diameter Dw, the roller length L, the number Z of rollers in each row and the half cone angle psi of the rollers of:

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 of non-standard width 272 of the basket-like cage.

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

(V) detailed description of the preferred embodiments

A novel four-row tapered roller bearing with a novel basket-shaped frame nonstandard width 272 is shown in figures 1 and 2, the novel four-row tapered roller bearing is shown in figure 1 and is provided with two single-row outer rings 1, a double-row outer ring 6 and two double-row inner rings 4, an inner spacing ring 5 is arranged between the two double-row inner rings, and two outer spacing rings 2 are arranged between the single-row outer rings and the double-row outer rings in total, the retaining frame adopts a basket-shaped retaining frame 7, the bearing outer dimension is shown in figure 1, the bearing inner diameter D is 260mm, the bearing outer diameter D is 360mm, the bearing outer ring component width T and the bearing inner ring component width B are 272mm, the structural elements of the four-row tapered roller bearing determined by a rolling bearing limit design method are shown in figures 2 and table 2, the roller diameter Dw is 28.482mm, the roller length is 49.1mm, the roller number Z of each row of rollers in the circumferential direction is 31.

Claims

1. The novel four-row tapered roller bearing with the basket-shaped frame nonstandard width 272 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 ring and the two-row outer rings, a plurality of rollers (3) are arranged between the inner ring and the outer ring 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 number Z of rollers in each row and the roller half:

TABLE 1

2. The new type four-row tapered roller bearing with non-standard basket frame width 272 as claimed in claim 1, wherein the values of 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 roller number Z per row and the roller half cone angle psi of the bearing are the values in Table 2:

TABLE 2