CN101769303A

CN101769303A - Rolling mill double-row angular contact ball bearing

Info

Publication number: CN101769303A
Application number: CN200810230224A
Authority: CN
Inventors: 陶永强; 何华; 孙德忠; 林永浩; 孙玉江
Original assignee: Dalian Quanxin Rolling Mill Bearing Manufacturing Co Ltd
Current assignee: Dalian Quanxin Rolling Mill Bearing Manufacturing Co Ltd
Priority date: 2008-12-26
Filing date: 2008-12-26
Publication date: 2010-07-07

Abstract

The invention discloses a rolling mill double-row angular contact ball bearing, comprising an outer ring (1), an inner ring (2), a ball roller (3) and a retaining bracket (4); the inner ring (2) is a splitting structure which is formed by two inner cycle rings with the same shape; the inner cycle ring is provided with an inner hole and is rounded off at two sides, the round corner at one side is more than that at the other side, a roller rolling way is arranged in the middle part of the outer side of the inner cycle ring and is circular arc; the shape of the outer side of the inner cycle ring and one side corresponding to the large rounding circular bead of the inner hole is cylindrical, and the shape of the outer side of the inner cycle ring and one side corresponding to the large rounding circular bead of the inner hole is conical. The rolling mill double-row angular contact ball bearing is mainly applied to rolling mill industry; the adopted oil injection hole improves the lubricating function and the bearing life can be greatly improved.

Description

A kind of rolling mill double-row angular contact ball bearing

Technical field

The present invention relates to a kind of rolling mill double-row angular contact ball bearing, belong to the double-row angular contact bal bearing technical field.

Background technique

The double-row angular contact bal bearing structure is made up of inner ring, outer ring, ball roller and retainer, double-row conical bearing uses on the milling train of each steel rolling mill, bearing working in impact, high temperature, at a high speed, heavy duty, insufficient lubrication, high pressure water wash away etc. under the bad working environments condition.The design of bearing housing end has Sealing, mainly is to prevent that extraneous foreign matter from entering in the bearing, as impurity, cooling water, iron scale etc.

When firm use Xinmi City sealing, sealing effect is good, but after using a period of time, the sealing effect variation, this moment as untimely replacing Sealing, then sealing effect is very poor, add reasons such as the frequent influence of bearing mounting or dismounting sealing, foreign matters such as the iron scale that produces in the operation of rolling, cooling water will enter in the bearing, and lubricant grease also can leak, and will cause the non-fatigue ruption of bearing like this, reduce the working life of bearing, also can increase the workload of the frequent fatten of workman, and the use amount and the discharge amount of grease, pollution caused to environment.

Summary of the invention

The present invention provides a kind of rolling mill double-row angular contact ball bearing for solving on the above technical problem, has solved extraneous foreign matter and has entered problems such as bearing and lubricant grease leak.

A kind of rolling mill double-row angular contact ball bearing of the present invention comprises outer ring, inner ring, ball roller and retainer; The branch body structure that described inner ring is made up of two on all four inner ring rings of shape; The inner ring ring has the equal rounding in endoporus both sides, and the fillet of a side is greater than the fillet of opposite side; The outer middle side part of inner ring ring has the roller raceway, and shape is circular arc; The inner ring ring outside is cylindrical with the corresponding side shape of the big fillet of endoporus; The inner ring ring outside and endoporus fall the corresponding side shape of big or small fillet and are conical.

In addition, the outer ring of bearing of the present invention is circular, is integral structure; Endoporus both sides, outer ring chamfering; The outer ring inside circumference is provided with two row raceways, forms the boss to central direction between the two row raceways, and the side surface of boss is part ball-track surface; External diameter both sides, outer ring chamfering, there is a dovetail groove at the middle part, is provided with the oil hole that points to the ring heart in dovetail groove.Oil hole on the outer ring is 4; Oil hole is in outer ring circumference spaced at equal angles around.

The present invention compared with prior art has the following advantages: significantly reduced friction, improved lubricating condition, improved lubricated quality, reduced frictional heating and energy loss, thereby improved bearing life greatly.

Description of drawings

Fig. 1 is the sectional structure chart of bearing of the present invention;

Fig. 2 is the sectional structure chart of inner ring ring of the present invention.

Embodiment

As seen from Figure 1, Figure 2: a kind of rolling mill double-row angular contact ball bearing of the present invention comprises outer ring, inner ring, ball roller and retainer; The branch body structure that inner ring is made up of two on all four inner ring rings of shape; The inner ring ring has the equal rounding in endoporus both sides, and the fillet of a side is greater than the fillet of opposite side; The outer middle side part of inner ring ring has the roller raceway, and shape is circular arc; The inner ring ring outside is cylindrical with the corresponding side shape of the big fillet of endoporus; The inner ring ring outside and endoporus fall the corresponding side shape of big or small fillet and are conical.

Claims

1. a rolling mill double-row angular contact ball bearing is characterized in that: comprise outer ring (1), inner ring (2), ball roller (3) and retainer (4); The branch body structure that described inner ring (2) is made up of two on all four inner ring rings of shape; Described inner ring ring has the equal rounding in endoporus both sides, and the fillet of a side is greater than the fillet of opposite side; The outer middle side part of described inner ring ring has the roller raceway, and shape is circular arc; The described inner ring ring outside is cylindrical with the corresponding side shape of the big fillet of endoporus; The described inner ring ring outside and endoporus fall the corresponding side shape of big or small fillet and are conical.

2. according to the described rolling mill double-row angular contact ball bearing of claim 1, it is characterized in that:

Described outer ring (1) is circular, is integral structure;

Endoporus both sides, described outer ring (1) chamfering;

Described outer ring (1) inside circumference is provided with two row raceways, forms the boss to central direction between the two row raceways, and the side surface of described boss is part ball-track surface;

External diameter both sides, described outer ring (1) chamfering, there is a dovetail groove at the middle part, is provided with the oil hole that points to the ring heart in dovetail groove.

3. according to the described rolling mill double-row angular contact ball bearing of claim 2, it is characterized in that: the oil hole on the described outer ring is 4; Described oil hole is in outer ring circumference spaced at equal angles around.