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Four-row cylindrical roller bearing for rolling mill

A cylindrical roller bearing and cylindrical roller technology, applied in the field of rolling mill bearings

Pending Publication Date: 2018-03-02
山东吉恩纳机械工程技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a four-row cylindrical roller bearing for rolling mills to solve the above-mentioned problems existing in existing designs

Method used

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  • Four-row cylindrical roller bearing for rolling mill
  • Four-row cylindrical roller bearing for rolling mill
  • Four-row cylindrical roller bearing for rolling mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In this example, see Figure 1-Figure 3 , a four-row cylindrical roller bearing for a rolling mill, comprising an outer ring 1, an inner ring 4, a cage set 5, cylindrical rollers 6, a movable outer rib 3 and a movable middle spacer 2, characterized in that:

[0016] In this example, see Figure 1-Figure 3 , the outer ring 1 is made of high-carbon chromium bearing steel, and is composed of two separate outer rings without ribs, which are separated by the movable middle spacer ring 2. The design without ribs can effectively avoid bearing damage caused by stress concentration. Cracking, and maximize the length of the roller, increase the contact line length between the roller and the raceway, thereby increasing the radial load capacity of the bearing;

[0017] In this example, see Figure 1-Figure 3 , the inner ring 4 is made of high-carbon chromium bearing steel, and is designed as an integral structure. The advantage of the integral structure is that it has better bala...

Embodiment 2

[0025] This embodiment is basically the same as Embodiment 1, especially in that:

[0026] In this example, see Figure 4 , the crossbeam 53 of the cage group 5 adopts a cylindrical crossbeam 531, and the contact friction between the cylindrical crossbeam 531 and the cylindrical roller 6 is smaller, and the friction loss and heat generation are less. In addition, the cylindrical crossbeam 531 is conducive to the formation of a lubricating oil film in the working process , The surface of the beam 531 can be sand blasted, and the tiny holes formed on the surface store lubricant without occupying the internal space of the bearing, which double guarantees the quality of bearing lubrication and reduces the damage caused by poor lubrication of the bearing.

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PUM

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Abstract

The invention relates to a four-row cylindrical roller bearing for a rolling mill, wherein the four-row cylindrical roller bearing includes outer rings, an inner ring, a holder group, cylindrical rollers, a movable outer retaining side and a movable middle space ring. The outer rings include two individual retaining side-free outer rings which are separated by the movable middle space ring; the inner ring is of an integral type inner ring structure; the holder group includes two individual holders, and each holder accommodates two rows of cylindrical rollers; holder base cross beam mounting surfaces adopt micro holes formed by a sand blasting process as a self lubricating storage device, and under conditions of good lubrication and poor lubrication, good lubrication quality can be ensured;the cylindrical rollers are guided by the holder group, and a peripheral curve is a convexity curve having relatively good stress adaptability. The four-row cylindrical roller bearing for the rollingmill has compact structure; through adjustment of an internal structure, the length of the cylindrical rollers is extended, and the radial bearing capacity of the bearing is increased; and through the special oil storage process of the holders, the lubrication quality is ensured, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the field of rolling mill bearings, in particular to a four-row cylindrical roller bearing for rolling mills. Background technique [0002] Four-row cylindrical roller bearings for rolling mills are mainly used for high-speed and high-precision wire rods, profiles, and roll necks of hot and cold rolling mills. bearing capacity in the axial direction, but not in the axial bearing capacity, all four-row cylindrical roller bearings for rolling mills must be used in conjunction with thrust bearings that bear the axial bearing capacity; the outer ring assembly and the inner ring can be separated to facilitate the installation of the bearing , Disassembly and maintenance. The current four-row cylindrical roller bearing FC type and FCD type outer ring assemblies for rolling mills have outer ribs and middle ribs. During the bearing processing process, especially during heat treatment and subsequent machining processes, residual ribs a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/28F16C33/58F16C33/48F16C33/66F16C33/56
CPCF16C19/28F16C33/485F16C33/56F16C33/58F16C2322/12F16C2204/10
Inventor 燕敬祥杨青
Owner 山东吉恩纳机械工程技术有限公司