CN201347960Y

CN201347960Y - Double-row cylindrical roller bearing with internal block and external block for rolling mill

Info

Publication number: CN201347960Y
Application number: CNU2008202322230U
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: 2009-11-18
Anticipated expiration: 2018-12-26

Abstract

The utility model discloses a double-row cylindrical roller bearing with internal block and external block for rolling mill, which comprises an outer ring, an inner ring, a roller (3), a retainer (4), a retainer cover (5), an external middle spacer ring (6), an internal block and an external block (7, 8), wherein the outer ring is a split structure composed of two single-path outer rings (1) and the external middle spacer ring (6), the inner ring is a split structure consisting of two single-path inner rings, and the retainer cover (5) is fixed on the retainer (4) by screws. An oil hole adopted by the cylindrical roller bearing improves the lubrication effect, and therefore, the service life of the bearing is greatly increased.

Description

Outer baffle block Biserial cylindrical roller bearing for rolling mill in a kind of band

Technical field

The present invention relates to outer baffle block Biserial cylindrical roller bearing for rolling mill in a kind of band, more particularly relate to the roller bearing that uses on a kind of milling train, belong to the four-line column roller bearing technical field.

Background technique

The four-line column roller bearing structure is made up of outer ring, inner ring, retainer and roller, four-line column roller 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.

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, 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, cause pollution to environment.

Summary of the invention

The present invention provides a kind of band interior outer baffle block Biserial cylindrical roller bearing for rolling mill for solving on the above technical problem, has solved extraneous foreign matter and has entered problems such as bearing and lubricant grease leak.

Outer baffle block Biserial cylindrical roller bearing for rolling mill in a kind of band of the present invention comprises outer ring, inner ring, roller, retainer, retainer lid, outer middle spacer ring, interior outer baffle block; Described outer ring singly is rolled into outer ring and the branch body structure that outer middle spacer ring is formed by two; The described equal rounding in both sides that singly is rolled into outer ring external diameter and endoporus has a roller raceway in the endoporus, two arc grooves are arranged in the roller raceway; The equal rounding in both sides of described outer middle spacer ring external diameter and endoporus, there is a trapezoidal groove at the external diameter middle part, is distributing uniformly in the trapezoidal groove and is pointing to the oil hole in the center of circle; The branch body structure that described inner ring is made up of two single raceway inner rings; There is a roller raceway at described single raceway inner ring external diameter middle part, and two arc grooves are arranged in the roller raceway, and a side of roller raceway is one and is used to place the fixedly rib of internal stop of outer baffle block rectangular recess, opposite side; The equal rounding in both sides of described inner ring external diameter and endoporus, the external diameter of two single raceway inner ring joints and the equal rounding of endoporus; Described retainer lid makes and is screwed on retainer.Pilot hole interference fit on the outer ring of bearing and the milling train matrix, an oiling path is arranged on the pilot hole on the milling train matrix, this oiling path injects lubricant oil to the arc groove at bearing outer ring outer wall middle part, and lubricant oil injects lubricant oil by the oil hole in the arc groove in bearing.

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;

Embodiment

As shown in Figure 1, the outer baffle block Biserial cylindrical roller bearing for rolling mill comprises outer ring, inner ring, roller 3, retainer 4, retainer lid 5, outer middle spacer ring 6, interior

outer baffle block

7,8 in a kind of band of the present invention; Described outer ring singly is rolled into outer ring 1 and the branch body structure that outer middle spacer ring 6 is formed by two; The described equal rounding in both sides that singly is rolled into outer ring 1 external diameter and endoporus has a roller raceway in the endoporus, two arc grooves are arranged in the roller raceway; The equal rounding in both sides of described outer middle spacer ring 6 external diameters and endoporus, there is a trapezoidal groove at the external diameter middle part, is distributing uniformly in the trapezoidal groove and is pointing to the oil hole in the center of circle; The branch body structure that described inner ring is made up of two single raceway inner rings; There is a roller raceway at described single raceway inner ring external diameter middle part, and two arc grooves are arranged in the roller raceway, and a side of roller raceway is one and is used to place the fixedly rib of internal stop 8 of outer baffle block 7 rectangular recess, opposite side; The equal rounding in both sides of described inner ring external diameter and endoporus, the external diameter of two single raceway inner ring joints and the equal rounding of endoporus; Described retainer lid 5 makes and is screwed on retainer 4.Pilot hole interference fit on the outer ring of bearing and the milling train matrix, an oiling path is arranged on the pilot hole on the milling train matrix, this oiling path injects lubricant oil to the arc groove at bearing outer ring outer wall middle part, and lubricant oil injects lubricant oil by the oil hole in the arc groove in bearing.

A kind of preferred embodiment: directly be that the outer baffle block Biserial cylindrical roller bearing for rolling mill is an example in the band of 310mm with nominal outside diameter, the nominal width of bearing is 157mm; The radius of arc groove is 10mm, and the width of arc groove is 9.5mm; The quantity of every side oil hole is 4, and the oil hole diameter is 5mm.There have been these oil holes to help the timely input and the exchange of oiling agent, so not only reduced friction and also having improved lubricatedly simultaneously, helped reducing frictional heating and energy loss.

Claims

1, outer baffle block Biserial cylindrical roller bearing for rolling mill in a kind of band is characterized in that: comprise outer ring, inner ring, roller (3), retainer (4), retainer lid (5), outer middle spacer ring (6), interior outer baffle block (7,8); Wherein

Described outer ring singly is rolled into outer ring (1) and the branch body structure that outer middle spacer ring (6) is formed by two; The described equal rounding in both sides that singly is rolled into outer ring (1) external diameter and endoporus has a roller raceway in the endoporus, two arc grooves are arranged in the roller raceway; The equal rounding in both sides of described outer middle spacer ring (6) external diameter and endoporus, there is a trapezoidal groove at the external diameter middle part, is distributing uniformly in the trapezoidal groove and is pointing to the oil hole in the center of circle;

The branch body structure that described inner ring is made up of two single raceway inner rings; There is a roller raceway at described single raceway inner ring external diameter middle part, and two arc grooves are arranged in the roller raceway, and a side of roller raceway is one and is used to place the fixedly rib of internal stop (8) of outer baffle block (7) rectangular recess, opposite side; The equal rounding in both sides of described inner ring external diameter and endoporus, the external diameter of two single raceway inner ring joints and the equal rounding of endoporus;

Described retainer lid (5) makes and is screwed on retainer (4).