CN211343706U

CN211343706U - Novel double-row tapered roller bearing with eight outer inner diameters 330

Info

Publication number: CN211343706U
Application number: CN201921022596.XU
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: 2020-08-25
Anticipated expiration: 2029-07-02

Abstract

The novel double-row tapered roller bearing with the eight outer inner diameters 330 comprises a double-row inner ring and two single-row outer rings separated by an outer spacer ring, wherein a plurality of rollers are arranged between the inner ring and the outer rings, and the position between the two rows of rollers is in an outer eight shape and is supported by a basket-shaped retainer. In order to solve the problems of large impact load, high rotating speed, short service life of a bearing, long roller changing consumption time and the like of the existing bearing, the 'rolling bearing limit design method' originally invented by the company is adopted, and the values Dw, L and Z of the appearance size and the structural elements of the novel bearing are provided. The requirements of customers 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 rolling mill in ferrous metallurgy and non-ferrous industry.

Description

Novel double-row tapered roller bearing with eight outer inner diameters 330

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

(II) background technology:

the double-row tapered roller bearing axial load is used for mounting a rolling mill support roller or a working roller in the prior metallurgical steel and non-ferrous industry, and has the defects of short service life of the bearing, long accumulated auxiliary time consumed by roller replacement and long service life required by users for reducing the use cost due to the bad working condition, high rotating speed and large borne impact load of the bearing.

Although the chinese utility model patent "eight outer novel double row tapered roller bearings" (ZL201720759534.1) discloses an eight outer novel double row tapered roller bearings, it only discloses a model (370630) and can not satisfy the requirement of more eight outer novel double row tapered roller bearings long-life completely.

(III) the invention content:

the utility model provides a novel double-row tapered roller bearing of eight outer internal diameters 330, its purpose is exactly for the user provides long-life double-row tapered roller bearing. Provides a novel structural element value of the double-row tapered roller bearing.

The utility model is used for bearing model 370666, wherein 37 is outer eight double-row tapered roller bearing, 06 is unidimensional series code, and 66 is bearing internal diameter d/5). The utility model provides a technical scheme is a non-standard new design in this bearing model.

The technical scheme is as follows:

the novel double-row tapered roller bearing with eight outer inner diameters 330 is provided with a double-row inner ring 2 and two single-row outer rings 1 separated by an outer space ring 5; a plurality of rollers (4) are arranged in the inner ring and the outer ring, the relative positions of two rows of rollers are in an outer eight shape and are supported by a basket-shaped retainer (3), and the roller cage is characterized in that: the numerical value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing inner ring width B, the bearing outer ring component width T, the roller diameter Dw, the roller length L, the roller quantity Z of each row and the roller half-cone angle psi of the model bearing are shown in the table 1:

TABLE 1

In order to obtain the best effect of the double-row tapered roller bearing, the values of the bearing inner diameter D, the bearing outer diameter D, the bearing inner ring width B, the bearing outer ring assembly width T, the roller diameter Dw, the roller length L, the roller number Z and the roller half-cone angle psi of the bearing of the type shown in the table 1 are the values shown in the table 2 respectively. I.e., values with tolerances only of nominal size are deleted from table 1.

TABLE 2

The utility model discloses beneficial effect: the novel double-row tapered roller bearing with the outer eight inner diameters 330 is designed by a rolling bearing limit design method originally invented by a company, and the structural element numerical values of the model double-row tapered roller bearing are determined. The design realizes that the designed roller has the largest diameter and the longest length, the highest rated dynamic load value of the bearing and the longest calculated service life under the condition of meeting the requirements of design strength and process machining, meets the long service life requirements of customers and reduces the use cost of the customers.

(IV) description of the drawings

Fig. 1 is a front sectional view of the novel double-row tapered roller bearing with the outer eight inner diameters 330.

Figure 2 roller 4 shape diagram.

(V) detailed description of the preferred embodiments

Referring to fig. 1 and 2, the eight-row tapered roller bearing with the number 1 in table 2 has a two-row inner ring 2 and two single-row outer rings 1 separated by an outer spacer ring 5, a plurality of rollers 4 are arranged between the inner ring and the outer rings, and the two rows of rollers are in an eight-outer shape relative to each other. The rollers are supported by a basket-shaped cage 3.

The external dimension bearing inner diameter D is 330mm, the bearing outer diameter D is 520mm, and the width B of the bearing inner ring 2 is equal to the width T of the bearing outer ring 1 component and is 180 mm. The sizes of the structural elements determined by the limit design method are as follows: the roller diameter Dw of the bearing was 41.966mm, the roller length L was 65.3mm, the number Z of rollers provided in each row in the circumferential direction was 31, and the roller half-cone angle ψ was 2 ° 40'.

Claims

1. The novel double-row tapered roller bearing with eight outer inner diameters 330 is provided with a double-row inner ring (2) and two single-row outer rings (1) separated by an outer space ring (5); a plurality of rollers (4) are arranged in the inner ring and the outer ring, and the two rows of rollers are externally octagonal relative to each other and are supported by a basket-shaped retainer (3); the method is characterized in that: the numerical value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing inner ring width B, the bearing outer ring component width T, the roller diameter Dw, the roller length L, the roller quantity Z of each row and the roller half-cone angle psi of the model bearing are shown in the table 1:

TABLE 1

2. The new double row tapered roller bearing of claim 1 having an outer eight inner diameter 330, wherein the inner diameter D, outer diameter D, inner width B, outer width T, diameter Dw, length L, number Z of rollers per row and half cone angle psi of rollers of a type bearing are numbered as in table 2, number 1:

TABLE 2