CN211100786U

CN211100786U - Novel four-row cylindrical roller bearing with outer ring with flange inner diameter of 250

Info

Publication number: CN211100786U
Application number: CN201921022111.7U
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 utility model is used for a bearing model FCD5068230, is a non-standard new design of this bearing model, in order to solve the problems of large impact load, high rotating speed, short bearing life, long roller changing consumption time and the like of the existing bearing, the unique rolling bearing limit design method of the company is adopted, the external dimension and the structural element values Dw, L and Z of the novel bearing are provided.

Description

Novel four-row cylindrical roller bearing with outer ring with flange inner diameter of 250

The technical field is as follows: a four-row cylindrical roller bearing belongs to an oversize 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 four-row cylindrical roller bearing for mounting the rolling mill supporting roller or the working roller in the prior metallurgical steel and nonferrous industry has the advantages that the working condition of the bearing is severe, the rotating speed is high, and the borne impact load is large, so the service life of the bearing is short, the accumulated auxiliary time for roller replacement is long, and the user requires the bearing to have a long service life for reducing the use cost.

(III) the invention content: the utility model provides an outer lane is from novel four-row cylindrical roller bearing of taking flange internal diameter 250, its purpose is exactly for the user provides long-life four-row cylindrical roller bearing. Provides the values of the external dimension and the structural elements of the serial number four-row cylindrical roller bearing.

The utility model is used for bearing model FCD5068230, (wherein the FCD structure is the outer lane from taking the flange, having four-row cylindrical roller bearing of 2 inner circles, 50 × 5 is bearing internal diameter size, 68 × 5 is bearing external diameter size, 230 is the width size of bearing.) the technical scheme that the utility model provides a non-standard new design in this bearing model.

The technical scheme is as follows:

the novel four-row cylindrical roller bearing with the outer ring with the flange inner diameter 250 is provided with two double-row outer rings 1 and two double-row inner rings 2, a plurality of rollers 4 are arranged between the double-row outer rings and the double-row inner rings and are supported by an entity retainer 3, and is characterized in that the novel four-row cylindrical roller bearing is provided with a serial number 1, and the numerical ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing width T (B), the bearing roller diameter Dw, the roller length L and the number Z of each row of rollers of the serial number 1 bearing are numerical ranges in a table 1 respectively

In order to obtain the best effect of the four-row cylindrical roller bearing, the numerical values of the bearing inner diameter D, the bearing outer diameter D, the bearing width T (B), the roller diameter Dw, the roller length L and the number Z of each row of rollers of each novel four-row cylindrical roller bearing in the table 1 are respectively the numerical values of the serial number 1 in the table 2, namely the numerical values of the nominal size and the optimized number of each row of rollers after the tolerance is deleted in the table 1.

TABLE 2

The utility model discloses beneficial effect: this novel four-row cylindrical roller bearing of flange internal diameter 250 is taken from to outer lane adopts the original "antifriction bearing limit design method" design of company, has confirmed the constitutional element numerical value of a technical scheme of this bearing model FCD5068230, and this technical scheme has realized satisfying under design strength and technology processing requirement condition, and the roller 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 customer's long-life requirement, has reduced customer's use cost.

(IV) description of the drawings

FIG. 1 is a front cross-sectional view of a novel four-row cylindrical roller bearing with a self-flanged inner diameter 250 of the outer ring.

Figure 2 roller 4 shape diagram.

(V) detailed description of the preferred embodiments

Referring to fig. 1, the novel four-row cylindrical roller bearing with the outer ring provided with the flange inner diameter 250 is provided with two double-row outer rings 1 and two double-row inner rings 2, a plurality of rollers 4 are arranged between the double-row outer rings and the double-row inner rings, and the rollers are supported by a solid retainer 3.

Referring to fig. 1 and table 2, the external dimensions of the bearing are that the inner diameter D of the bearing is 250m, the outer diameter D of the bearing is 340mm, the width T (B) of the bearing is 230mm, (where T is the width of the bearing outer ring assembly, and B is the width of the bearing inner ring assembly, i.e., T ═ B ═ 230mm), the structural elements of the novel four-row cylindrical roller bearing with the outer ring self-retaining edge determined by the rolling bearing limit design method are as shown in fig. 2 and table 2, the diameter Dw of the roller is 23mm, the length L of the roller is 42.4mm, and the number Z of the rollers in each row in the circumferential direction is 36.

Claims

1. The novel four-row cylindrical roller bearing with the outer ring with the flange inner diameter 250 is provided with two double-row outer rings (1) and two double-row inner rings (2), a plurality of rollers (4) are arranged between the double-row outer rings and the double-row inner rings and are supported by an entity retainer (3), and the novel four-row cylindrical roller bearing is characterized in that a serial number 1 is arranged, and the numerical ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing width T (B), the bearing roller diameter Dw, the roller length L and the number Z of each row of rollers of the serial number 1 are respectively numerical ranges in a table 1.

TABLE 1

2. The novel four-row cylindrical roller bearing with the outer ring provided with the flanges as claimed in claim 1 is characterized in that the values of the bearing inner diameter D, the bearing outer diameter D, the bearing width T (B), the bearing roller diameter Dw, the roller length L and the roller quantity Z of each row of the bearing with the serial number 1 are respectively the numerical values in the table 2:

TABLE 2